Worm.Win32.Dorkbot_68ef62d4e0
Gen:Variant.Zusy.65922 (BitDefender), Worm:Win32/Dorkbot.I (Microsoft), HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Agent.adgv (v) (VIPRE), BackDoor.IRC.NgrBot.42 (DrWeb), Gen:Variant.Zusy.65922 (B) (Emsisoft), PWS-Zbot-FAXY!68EF62D4E051 (McAfee), Trojan.Win32.Loktrom (Ikarus), Gen:Variant.Zusy.65922 (FSecure), Generic35.BYI (AVG), Win32:Kryptik-MZT [Trj] (Avast), PAK_Generic.021 (TrendMicro), Backdoor.Win32.Farfli.FD, Worm.Win32.Dorkbot.FD, mzpefinder_pcap_file.YR, WormDorkbot.YR, GenericUDPFlooder.YR, GenericIRCBot.YR, GenericMSNWorm.YR, GenericUSBInfector.YR, GenericDNSBlocker.YR, GenericAutorunWorm.YR, GenericSYNFlooder.YR, GenericInjector.YR, BankerGeneric.YR, GenericProxy.YR, GenericPhysicalDrive0.YR (Lavasoft MAS)
Behaviour: Banker, Trojan, Backdoor, Flooder, Worm, WormAutorun, IRCBot, MSNWorm, DNSBlocker, UDPFlooder, SYNFlooder, Trojan-Proxy, USBInfector
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
MD5: 68ef62d4e051dab422d2c231152b9ff6
SHA1: c529c96cb5febabe7cd1b5529f2537b1a9ab8a71
SHA256: 4337f8ad1f06af7fca14240020bc6bc0d585f2dbc37b89e5ac14e91907a0680c
SSDeep: 3072:wvSyBGGD1XuXFIUjaOvghnpVUpWI7BruhTaONTIXn8B0kal0/FUN9vo8eFvnx:dyBGG5OaOypgWI5 aONTiyaqU89x
Size: 201728 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 1998-03-14 13:32:43
Summary:
Worm. A program that is primarily replicating on networks or removable drives.
Payload
| Behaviour | Description |
|---|---|
| WormAutorun | A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Worm's file once a user opens a drive's folder in Windows Explorer. |
| IRCBot | A bot can communicate with command and control servers via IRC channel. |
| MSNWorm | A worm can spread its copies through the MSN Messanger. |
| DNSBlocker | A program can block designated DNS servers for making it difficult for users to locate specific domains or web sites on the Internet. |
| UDPFlooder | This program can make a UDP flood. A UDP flood attack is a denial-of-service attack using the User Datagram Protocol (UDP). It can be initiated by sending a large number of UDP packets to random ports on a remote host. |
| SYNFlooder | This program can make a SYN flood. It is a form of denial-of-service attack in which an attacker sends a succession of SYN requests to a target's system in an attempt to consume enough server resources to make the system unresponsive to legitimate traffic. |
| Trojan-Proxy | This program can launch a proxy server (SOCKS4) on a designated TCP port. |
| USBInfector | A program can register a device notification with the help of RegisterDeviceNotification. So it is notified when a USB device is plugged and then the worm copies itself to the USB device plugged into the affected computer. |
Process activity
The Worm creates the following process(es):
4.exe:216
4.exe:1240
4.exe:596
3.exe:988
1.exe:1288
5.exe:1792
%original file name%.exe:920
%original file name%.exe:1468
%original file name%.exe:1368
2.exe:464
2.exe:1812
2.exe:672
The Worm injects its code into the following process(es):
mspaint.exe:188
mspaint.exe:1736
mscorsvw.exe:1912
File activity
The process 4.exe:216 makes changes in the file system.
The Worm creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\ScreenSaverPro.scr (673 bytes)
%Documents and Settings%\%current user%\Application Data\temp.bin (673 bytes)
The Worm deletes the following file(s):
%Documents and Settings%\%current user%\Application Data\ScreenSaverPro.scr (0 bytes)
%Documents and Settings%\%current user%\Application Data\4.exe.gonewiththewings (0 bytes)
%Documents and Settings%\%current user%\Application Data\5.exe.gonewiththewings (0 bytes)
%Documents and Settings%\%current user%\Application Data\3.exe.gonewiththewings (0 bytes)
%Documents and Settings%\%current user%\Application Data\temp.bin (0 bytes)
%Documents and Settings%\%current user%\Application Data\2.exe.gonewiththewings (0 bytes)
The process mspaint.exe:1736 makes changes in the file system.
The Worm creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\3.exe (170 bytes)
%Documents and Settings%\%current user%\Application Data\2.exe (170 bytes)
%Documents and Settings%\%current user%\Application Data\1.exe (170 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\Hukmkt.exe (1281 bytes)
%Documents and Settings%\%current user%\Application Data\4.exe (170 bytes)
%Documents and Settings%\%current user%\Application Data\5.exe (105 bytes)
The Worm deletes the following file(s):
%Documents and Settings%\%current user%\Application Data\1.tmp (0 bytes)
%Documents and Settings%\%current user%\Application Data\4.tmp (0 bytes)
C:\%original file name%.exe (0 bytes)
%Documents and Settings%\%current user%\Application Data\5.tmp (0 bytes)
%Documents and Settings%\%current user%\Application Data\2.tmp (0 bytes)
%Documents and Settings%\%current user%\Application Data\3.tmp (0 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\Hukmkt.exe (0 bytes)
The process %original file name%.exe:920 makes changes in the file system.
The Worm creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\ScreenSaverPro.scr (1281 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Application Data\temp.bin (1281 bytes)
The process 2.exe:672 makes changes in the file system.
The Worm creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\chk_gdywquioiwe7289397eydhj (9 bytes)
%Documents and Settings%\%current user%\Application Data\ScreenSaverPro.scr (673 bytes)
%Documents and Settings%\%current user%\Application Data\temp.bin (673 bytes)
The Worm deletes the following file(s):
%Documents and Settings%\%current user%\Application Data\ScreenSaverPro.scr (0 bytes)
%Documents and Settings%\%current user%\Application Data\3.exe.gonewiththewings (0 bytes)
%Documents and Settings%\%current user%\Application Data\1.exe.gonewiththewings (0 bytes)
%Documents and Settings%\%current user%\Application Data\2.exe.gonewiththewings (0 bytes)
%Documents and Settings%\%current user%\Application Data\temp.bin (0 bytes)
Registry activity
The process 4.exe:216 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "AB 2B DC 44 16 05 3B 3E 18 F5 F7 D8 5E 45 2E 49"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
To automatically run itself each time Windows is booted, the Worm adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Screen Saver Pro 3.1" = "%Documents and Settings%\%current user%\Application Data\ScreenSaverPro.scr"
The process 4.exe:1240 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "68 3C 32 CF 4D 6F C6 9C 98 C6 9A C6 90 55 6F E3"
The process 4.exe:596 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D3 C6 7C 2A CC 88 F8 04 B4 74 7F F4 11 F4 ED A9"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1383048153"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "4.exe"
The process mspaint.exe:188 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "7F D1 FE CF 81 A5 15 2D B2 87 46 CB C9 B0 A6 CF"
The process mspaint.exe:1736 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 17 00 00 00 01 00 00 00 00 00 00 00"
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "39 5B BA 57 DB 76 D8 49 2F ED 5D 84 EF 15 20 EF"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MigrateProxy" = "1"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"
The Worm modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"
The Worm modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"
To automatically run itself each time Windows is booted, the Worm adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Oukmka" = "%Documents and Settings%\%current user%\Application Data\Microsoft\Oukmka.exe"
Proxy settings are disabled:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
The Worm modifies IE settings for security zones to map all urls to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"
To automatically run itself each time Windows is booted, the Worm adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Hukmkt" = "%Documents and Settings%\%current user%\Application Data\Microsoft\Hukmkt.exe"
The Worm deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyServer"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyOverride"
The process 3.exe:988 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B4 22 51 6E 5D 39 BD 7C 1C 8F 45 E2 83 54 69 A4"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1383048153"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "3.exe"
The process 1.exe:1288 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "4F 53 E8 5C D7 93 12 84 42 2A FD 86 52 D0 F7 39"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1383048153"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "1.exe"
The process 5.exe:1792 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "6B EA 3C 8D 31 FD 43 00 1A 06 1D 87 7B E8 B6 BF"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1383055316"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "5.exe"
The process %original file name%.exe:920 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 16 00 00 00 01 00 00 00 00 00 00 00"
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D4 A0 72 06 32 FB CA D7 46 7D F7 60 E2 34 D3 5C"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MigrateProxy" = "1"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"
The Worm modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"
The Worm modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"
Proxy settings are disabled:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
The Worm modifies IE settings for security zones to map all urls to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"
To automatically run itself each time Windows is booted, the Worm adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Screen Saver Pro 3.1" = "%Documents and Settings%\%current user%\Application Data\ScreenSaverPro.scr"
The Worm deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyServer"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyOverride"
The process %original file name%.exe:1468 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "6D 9D DA CC 6A 09 D6 2F AA FD 99 34 2C 8C B5 A0"
The process %original file name%.exe:1368 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B0 4B 53 97 C9 83 90 0D C7 38 B8 9F 97 C8 5B 47"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
The process mscorsvw.exe:1912 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\.NETFramework\v2.0.50727\NGenService\State]
"AccumulatedWaitIdleTime" = "1260000"
The process 2.exe:464 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8E 79 6A 05 E4 1D D1 4C 63 66 3A 80 73 3D AC FB"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1383048153"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "2.exe"
The process 2.exe:1812 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "94 4A 43 E0 48 58 B9 EB B5 C0 8C A3 04 C6 B8 FC"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
The process 2.exe:672 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C7 25 34 88 F4 0D D4 89 E6 27 25 D2 1A 00 C3 02"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
To automatically run itself each time Windows is booted, the Worm adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Screen Saver Pro 3.1" = "%Documents and Settings%\%current user%\Application Data\ScreenSaverPro.scr"
Network activity (URLs)
| URL | IP |
|---|---|
| hxxp://37.139.31.188/373737.exe (Malicious) |  |
| hxxp://164.40.155.171/373737.exe (Malicious) |  |
| hxxp://144.76.169.105/373737.exe (Malicious) |  |
| hxxp://69.197.137.58/ |  |
| hxxp://109.206.177.199/3300.exe (Malicious) |  |
| w.jaao31231.com |  194.140.237.52 |
| r.a371000.com |  113.105.157.7 |
| w.jo31031.com |  Unresolvable |
HOSTS file anomalies
No changes have been detected.
Rootkit activity
The Worm installs the following user-mode hooks in WININET.dll:
HttpSendRequestW
InternetWriteFile
HttpSendRequestA
The Worm installs the following user-mode hooks in dnsapi.dll:
DnsQuery_A
DnsQuery_W
The Worm installs the following user-mode hooks in WS2_32.dll:
send
GetAddrInfoW
The Worm installs the following user-mode hooks in kernel32.dll:
MoveFileA
CopyFileW
CopyFileA
MoveFileW
CreateFileW
CreateFileA
The Worm installs the following user-mode hooks in ntdll.dll:
LdrLoadDll
NtResumeThread
NtQueryDirectoryFile
NtEnumerateValueKey
Propagation
A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Worm's file once a user opens a drive's folder in Windows Explorer.
A program can register a device notification with the help of RegisterDeviceNotification. So it is notified when a USB device is plugged and then the worm copies itself to the USB device plugged into the affected computer.
A worm can spread its copies through the MSN Messanger.
Remove it with Ad-Aware
- Click (here) to download and install Ad-Aware Free Antivirus.
- Update the definition files.
- Run a full scan of your computer.
Manual removal*
- Scan a system with an anti-rootkit tool.
- Terminate malicious process(es) (How to End a Process With the Task Manager):
4.exe:216
4.exe:1240
4.exe:596
3.exe:988
1.exe:1288
5.exe:1792
%original file name%.exe:920
%original file name%.exe:1468
%original file name%.exe:1368
2.exe:464
2.exe:1812
2.exe:672 - Delete the original Worm file.
- Delete or disinfect the following files created/modified by the Worm:
%Documents and Settings%\%current user%\Application Data\ScreenSaverPro.scr (673 bytes)
%Documents and Settings%\%current user%\Application Data\temp.bin (673 bytes)
%Documents and Settings%\%current user%\Application Data\3.exe (170 bytes)
%Documents and Settings%\%current user%\Application Data\2.exe (170 bytes)
%Documents and Settings%\%current user%\Application Data\1.exe (170 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\Hukmkt.exe (1281 bytes)
%Documents and Settings%\%current user%\Application Data\4.exe (170 bytes)
%Documents and Settings%\%current user%\Application Data\5.exe (105 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\chk_gdywquioiwe7289397eydhj (9 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Screen Saver Pro 3.1" = "%Documents and Settings%\%current user%\Application Data\ScreenSaverPro.scr"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Oukmka" = "%Documents and Settings%\%current user%\Application Data\Microsoft\Oukmka.exe"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Hukmkt" = "%Documents and Settings%\%current user%\Application Data\Microsoft\Hukmkt.exe" - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.
*Manual removal may cause unexpected system behaviour and should be performed at your own risk.
