Gen.Win32.AV-Killer.cmGfaGpgvgjb_7ef9d56436

by malwarelabrobot on September 5th, 2016 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Win32.AV-Killer.cmGfaGpgvgjb (B) (Emsisoft), Gen:Win32.AV-Killer.cmGfaGpgvgjb (AdAware), GenericAutorunWorm.YR (Lavasoft MAS)
Behaviour: Trojan, Worm, WormAutorun


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Requires JavaScript enabled!

Summary
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

MD5: 7ef9d56436dcf46c3f3effe0b958523c
SHA1: c8e7b22a1a775b242cca92834ed858b3facd0bb9
SHA256: 223c8b86fc10e31efe885c18cb3379be80a1831587c0f766e6476f02c6733e08
SSDeep: 768:1uyPChdXkILwAZUOkia877 wpWJQ8VZflnfmG X5AxYOEVsrM:1uD1kILZZUOkia8Xi7Zfln GW5P0
Size: 35840 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: PackerUPXCompresorGratuitowwwupxsourceforgenet, UPolyXv05_v6
Company: no certificate found
Created at: 2009-03-26 14:10:15
Analyzed on: WindowsXP SP3 32-bit


Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

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 Trojan's file once a user opens a drive's folder in Windows Explorer.


Process activity

The Trojan creates the following process(es):

taskkill.exe:1072
taskkill.exe:616
taskkill.exe:1980
sc.exe:828
rundll32.exe:1996
cacls.exe:1632
cacls.exe:1016

The Trojan injects its code into the following process(es):

%original file name%.exe:1972

Mutexes

The following mutexes were created/opened:
No objects were found.

File activity

The process rundll32.exe:1996 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%System%\drivers\acpiec.sys (5 bytes)

The process %original file name%.exe:1972 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\ (4 bytes)
%System%\killkb.dll (12169463 bytes)
%WinDir%\SoftwareDistribution\DataStore\Logs (96 bytes)
%System%\CatRoot2 (96 bytes)
%WinDir%\SoftwareDistribution (4 bytes)
%System%\drivers\etc\hosts (5 bytes)
%WinDir% (1640 bytes)
C:\$Directory (592 bytes)
%System%\dllcache (4 bytes)
%WinDir%\inf (400 bytes)
%WinDir%update.dll (31471014 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%System%\config\systemprofile (4 bytes)
%System%\drivers\pcidump.sys (5404535 bytes)
%System%\config (12 bytes)
%System%\drivers (296 bytes)
%Documents and Settings%\%current user% (4 bytes)
%System% (1296 bytes)

Registry activity

The process taskkill.exe:1072 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "7A 41 9C A8 BB E5 03 58 BE 7D 60 D3 72 F6 39 96"

The process taskkill.exe:616 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BB 73 DD 83 62 68 4D F3 00 B0 DA 30 C3 09 C4 A0"

The process taskkill.exe:1980 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "7F EE E1 44 0E C1 6E 3C F0 E6 FC F0 96 F3 58 FB"

The process sc.exe:828 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A4 17 C4 D6 EC F4 CC E0 4C 60 3E 0B 21 BE 0C 44"

The process rundll32.exe:1996 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "60 54 65 C0 CF 4B EC 68 19 86 F1 3E AC F4 9C 4A"

The process cacls.exe:1632 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "52 5A F5 39 A5 26 56 66 95 C6 C8 83 25 AB 16 98"

The process cacls.exe:1016 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "DE 68 05 53 34 69 05 45 D9 56 EA B1 98 47 FD 65"

Dropped PE files

MD5 File path
baa09efedc1df8cc16a5ca6f58bfe861 c:\WINDOWS\LastGood\system32\drivers\acpiec.sys
9859c0f6936e723e4892d7141b1327d5 c:\WINDOWS\system32\dllcache\acpiec.sys
baa09efedc1df8cc16a5ca6f58bfe861 c:\WINDOWS\system32\drivers\OLD3.tmp
601b3f2466bfa6989b9c7586b5ba54aa c:\WINDOWS\system32\drivers\pcidump.sys
888ad04f5495f8deef8b2764a93bdde0 c:\WINDOWS\system32\killkb.dll
4a1b0afbaa603e8c7be2f447f491cdd4 c:\WINDOWSupdate.dll

HOSTS file anomalies

The Trojan modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses.
The modified file is 5743 bytes in size. The following strings are added to the hosts file listed below:

127.0.0.1 v.onondown.com.cn
127.0.0.2 ymsdasdw1.cn
127.0.0.3 h96b.info
127.0.0.0 fuck.zttwp.cn
127.0.0.0 www.hackerbf.cn
127.0.0.0 geekbyfeng.cn
127.0.0.0 121.14.101.68
127.0.0.0 ppp.etimes888.com
127.0.0.0 www.bypk.com
127.0.0.0 CSC3-2004-crl.verisign.com
127.0.0.1 va9sdhun23.cn
127.0.0.0 udp.hjob123.com
127.0.0.2 bnasnd83nd.cn
127.0.0.0 www.gamehacker.com.cn
127.0.0.0 gamehacker.com.cn
127.0.0.3 adlaji.cn
127.0.0.1 858656.com
127.1.1.1 bnasnd83nd.cn
127.0.0.1 my123.com
127.0.0.0 user1.12-27.net
127.0.0.1 8749.com
127.0.0.0 fengent.cn
127.0.0.1 4199.com
127.0.0.1 user1.16-22.net
127.0.0.1 7379.com
127.0.0.1 2be37c5f.3f6e2cc5f0b.com
127.0.0.1 7255.com
127.0.0.1 user1.23-12.net
127.0.0.1 3448.com
127.0.0.1 www.guccia.net
127.0.0.1 7939.com
127.0.0.1 a.o1o1o1.nEt
127.0.0.1 8009.com
127.0.0.1 user1.12-73.cn
127.0.0.1 piaoxue.com
127.0.0.1 3n8nlasd.cn
127.0.0.1 kzdh.com
127.0.0.0 www.sony888.cn
127.0.0.1 about.blank.la
127.0.0.0 user1.asp-33.cn
127.0.0.1 6781.com
127.0.0.0 www.netkwek.cn
127.0.0.1 7322.com
127.0.0.0 ymsdkad6.cn
127.0.0.0 www.lkwueir.cn
127.0.0.1 06.jacai.com
127.0.1.1 user1.23-17.net
127.0.0.1 1.jopenkk.com
127.0.0.0 upa.luzhiai.net
127.0.0.1 1.jopenqc.com
127.0.0.0 www.guccia.net
127.0.0.1 1.joppnqq.com
127.0.0.0 4m9mnlmi.cn
127.0.0.1 1.xqhgm.com
127.0.0.0 mm119mkssd.cn
127.0.0.1 100.332233.com
127.0.0.0 61.128.171.115:8080
127.0.0.1 121.11.90.79
127.0.0.0 www.1119111.com
127.0.0.1 121565.net
127.0.0.0 win.nihao69.cn
127.0.0.1 125.90.88.38
127.0.0.1 16888.6to23.com
127.0.0.1 2.joppnqq.com
127.0.0.0 puc.lianxiac.net
127.0.0.1 204.177.92.68
127.0.0.0 pud.lianxiac.net
127.0.0.1 210.74.145.236
127.0.0.0 210.76.0.133
127.0.0.1 219.129.239.220
127.0.0.0 61.166.32.2
127.0.0.1 219.153.40.221
127.0.0.0 218.92.186.27
127.0.0.1 219.153.46.27
127.0.0.0 www.fsfsfag.cn
127.0.0.1 219.153.52.123
127.0.0.0 ovo.ovovov.cn
127.0.0.1 221.195.42.71
127.0.0.0 dw.com.com
127.0.0.1 222.73.218.115
127.0.0.1 203.110.168.233:80
127.0.0.1 3.joppnqq.com
127.0.0.1 203.110.168.221:80
127.0.0.1 363xx.com
127.0.0.1 www1.ip10086.com.cm
127.0.0.1 4199.com
127.0.0.1 blog.ip10086.com.cn
127.0.0.1 43242.com
127.0.0.1 www.ccji68.cn
127.0.0.1 5.xqhgm.com
127.0.0.0 t.myblank.cn
127.0.0.1 520.mm5208.com
127.0.0.0 x.myblank.cn
127.0.0.1 59.34.131.54
127.0.0.1 210.51.45.5
127.0.0.1 59.34.198.228
127.0.0.1 www.ew1q.cn
127.0.0.1 59.34.198.88
127.0.0.1 59.34.198.97
127.0.0.1 60.190.114.101
127.0.0.1 60.190.218.34
127.0.0.0 qq-xing.com.cn
127.0.0.1 60.191.124.252
127.0.0.1 61.145.117.212
127.0.0.1 61.157.109.222
127.0.0.1 75.126.3.216
127.0.0.1 75.126.3.217
127.0.0.1 75.126.3.218
127.0.0.0 59.125.231.177:17777
127.0.0.1 75.126.3.220
127.0.0.1 75.126.3.221
127.0.0.1 75.126.3.222
127.0.0.1 772630.com
127.0.0.1 832823.cn
127.0.0.1 8749.com
127.0.0.1 888.jopenqc.com
127.0.0.1 89382.cn
127.0.0.1 8v8.biz
127.0.0.1 97725.com
127.0.0.1 9gg.biz
127.0.0.1 www.9000music.com
127.0.0.1 test.591jx.com
127.0.0.1 a.topxxxx.cn
127.0.0.1 picon.chinaren.com
127.0.0.1 www.5566.net
127.0.0.1 p.qqkx.com
127.0.0.1 news.netandtv.com
127.0.0.1 z.neter888.cn
127.0.0.1 b.myblank.cn
127.0.0.1 wvw.wokutu.com
127.0.0.1 unionch.qyule.com
127.0.0.1 www.qyule.com
127.0.0.1 it.itjc.cn
127.0.0.1 www.linkwww.com
127.0.0.1 vod.kaicn.com
127.0.0.1 www.tx8688.com
127.0.0.1 b.neter888.cn
127.0.0.1 promote.huanqiu.com
127.0.0.1 www.huanqiu.com
127.0.0.1 www.haokanla.com
127.0.0.1 play.unionsky.cn
127.0.0.1 www.52v.com
127.0.0.1 www.gghka.cn
127.0.0.1 icon.ajiang.net
127.0.0.1 new.ete.cn
127.0.0.1 www.stiae.cn
127.0.0.1 o.neter888.cn
127.0.0.1 comm.jinti.com
127.0.0.1 www.google-analytics.com
127.0.0.1 hz.mmstat.com
127.0.0.1 www.game175.cn
127.0.0.1 x.neter888.cn
127.0.0.1 z.neter888.cn
127.0.0.1 p.etimes888.com
127.0.0.1 hx.etimes888.com
127.0.0.1 abc.qqkx.com
127.0.0.1 dm.popdm.cn
127.0.0.1 www.yl9999.com
127.0.0.1 www.dajiadoushe.cn
127.0.0.1 v.onondown.com.cn
127.0.0.1 www.interoo.net
127.0.0.1 bally1.bally-bally.net
127.0.0.1 www.bao5605509.cn
127.0.0.1 www.rty456.cn
127.0.0.1 www.werqwer.cn
127.0.0.1 1.360-1.cn
127.0.0.1 user1.23-16.net
127.0.0.1 www.guccia.net
127.0.0.1 www.interoo.net
127.0.0.1 upa.netsool.net
127.0.0.1 js.users.51.la
127.0.0.1 vip2.51.la
127.0.0.1 web.51.la
127.0.0.1 qq.gong2008.com
127.0.0.1 2008tl.copyip.com
127.0.0.1 tla.laozihuolaile.cn
127.0.0.1 www.tx6868.cn
127.0.0.1 p001.tiloaiai.com
127.0.0.1 s1.tl8tl.com
127.0.0.1 s1.gong2008.com
127.0.0.1 4b3ce56f9g.3f6e2cc5f0b.com


Rootkit activity

The Trojan installs the following kernel-mode hooks:

ZwQuerySystemInformation

Using the driver "%System%\drivers\pcidump.sys" the Trojan substitutes IRP handlers in a file system driver (NTFS) to control operations with files:

MJ_CREATE

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 Trojan's file once a user opens a drive's folder in Windows Explorer.

VersionInfo

No information is available.

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
UPX0 4096 73728 0 0 d41d8cd98f00b204e9800998ecf8427e
UPX1 77824 36864 34304 5.46022 fd2effc995d504f5fc70af39539daaad
.rsrc 114688 4096 512 1.58088 04db8b82c4678accefef45abcab0ac5b

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

No activity has been detected.

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET MALWARE All Numerical .cn Domain Likely Malware Related

Traffic

Web Traffic was not found.

The Trojan connects to the servers at the folowing location(s):

%original file name%.exe_1972:

`.rsrc
Ýfds
cmd /
im avp.exe
.rt= disableduruno
O328%s,
"%s"?
12345678*.Ogxr
update.dll
cmd /c taskkill /im avp.exe /f
cmd /c sc config avp start= disabled
rundll32.exe %s, droqp
\system32\killkb.dll
cmd /c taskkill /im ScanFrm.exe /f
cmd /c taskkill /im egui.exe /f
cmd /c taskkill /im ekrn.exe /f
cmd /c sc config ekrn start= disabled
cmd /c cacls "%s" /e /p everyone:f
cmd /c cacls %s /e /p everyone:f
*m5<-%C
URLDownloadToCacheFileA
>l`b<$r%udq<$r%jdx<$c%nr<vhmcnvr
FdsShbjBntms
EhmcMdwsEhkd@
Lctcp
GmdA_jjBpgtcp
GmBpgtcpM`hcarRwnc
016-/-/-0
016-/-/-1
016-/-/-2
016-/-/-/
010-03-0/0-57
016-0-0-0
016-/-0-0
50-017-060-00497/7/
010-00-8/-68
014-8/-77-27
1/3-066-81-57
10/-63-034-125
10/-65-/-022
108-018-128-11/
50-055-21-1
108-042-3/-110
107-81-075-16
108-042-35-16
108-042-41-012
110-084-31-60
111-62-107-004
1/2-00/-057-12297/
1/2-00/-057-11097/
48-23-020-43
10/-40-34-4
48-23-087-117
48-23-087-77
48-23-087-86
5/-08/-003-0/0
5/-08/-107-23
5/-080-013-141
50-034-006-101
50-046-0/8-111
64-015-2-105
64-015-2-106
64-015-2-107
48-014-120-066906666
64-015-2-11/
64-015-2-110
64-015-2-111
GetWindowsDirectoryA
WinExec
.text
`.rdata
@.data
.rsrc
.lO<R
KERNEL32.DLL
MSVCRT.dll

%original file name%.exe_1972_rwx_00401000_0001A000:

update.dll
cmd /c taskkill /im avp.exe /f
cmd /c sc config avp start= disabled
rundll32.exe %s, droqp
\system32\killkb.dll
cmd /c taskkill /im ScanFrm.exe /f
cmd /c taskkill /im egui.exe /f
cmd /c taskkill /im ekrn.exe /f
cmd /c sc config ekrn start= disabled
cmd /c cacls "%s" /e /p everyone:f
cmd /c cacls %s /e /p everyone:f
*m5<-%C
URLDownloadToCacheFileA
>l`b<$r%udq<$r%jdx<$c%nr<vhmcnvr
FdsShbjBntms
EhmcMdwsEhkd@
Lctcp
GmdA_jjBpgtcp
GmBpgtcpM`hcarRwnc
016-/-/-0
016-/-/-1
016-/-/-2
016-/-/-/
010-03-0/0-57
016-0-0-0
016-/-0-0
50-017-060-00497/7/
010-00-8/-68
014-8/-77-27
1/3-066-81-57
10/-63-034-125
10/-65-/-022
108-018-128-11/
50-055-21-1
108-042-3/-110
107-81-075-16
108-042-35-16
108-042-41-012
110-084-31-60
111-62-107-004
1/2-00/-057-12297/
1/2-00/-057-11097/
48-23-020-43
10/-40-34-4
48-23-087-117
48-23-087-77
48-23-087-86
5/-08/-003-0/0
5/-08/-107-23
5/-080-013-141
50-034-006-101
50-046-0/8-111
64-015-2-105
64-015-2-106
64-015-2-107
48-014-120-066906666
64-015-2-11/
64-015-2-110
64-015-2-111
GetWindowsDirectoryA
WinExec
.text
`.rdata
@.data
.rsrc

%original file name%.exe_1972_rwx_10000000_00001000:

.data
.rsrc
@.reloc
\pipe\browser
\\%s\IPC$
Bd
psapi.dll
\patch.exe
\dstdisk.exe
\defence.exe
192yuioealdjfiefjsdfas.txt
%SystemRoot%\System32\DRIVERS\puid.sys
\drivers\pcidump.sys
System32\DRIVERS\pcidump.sys
%SystemRoot%\system32\drivers\puid.sys
\\.\pcidump
\drivers\gm.dls
%s%d.txt
>>tmp.tmp
@echo rcx>>tmp.tmp
@echo %X>>tmp.tmp
@echo n tmp2>>tmp.tmp
@echo w>>tmp.tmp
@echo q>>tmp.tmp
@debug<tmp.tmp>nul
@rename tmp2 tmp2.exe
tmp2.exe
Windows
1.exe
autorun.inf
Open=1.exe
urlmon
\setup.exe
?mac=%s&ver=%s&key=%d&os=windows
.html
.hhqg
qq.exe
360safe.exe
\explorer.exe
\temp\explorer.exe
infect_exe

rundll32.exe_1996:

.text
`.data
.rsrc
msvcrt.dll
KERNEL32.dll
NTDLL.DLL
GDI32.dll
USER32.dll
IMAGEHLP.dll
rundll32.pdb
.....eZXnnnnnnnnnnnn3
....eDXnnnnnnnnnnnn3
...eDXnnnnnnnnnnnn,
.eDXnnnnnnnnnnnn,
%Xnnnnnnnnnnnnnnn1
O3$dS7"%U9
.manifest
5.1.2600.5512 (xpsp.080413-2105)
RUNDLL.EXE
Windows
Operating System
5.1.2600.5512
YThere is not enough memory to run the file %s.
Please close other windows and try again.
9The file %s or one of its components could not be opened.
0The file %s or one of its components cannot run.
MThe file %s or one of its components requires a different version of Windows.
UThe file %s or one of its components cannot run in standard or enhanced mode Windows.3Another instance of the file %s is already running./An exception occurred while trying to run "%s"
Error in %s
Missing entry:%s
Error loading %s

%original file name%.exe_1972_rwx_10008000_00002000:

\??\c:\%original file name%.exe
\??\%WinDir%\explorer.exe
ers\gm.dls
WinExec
CreatePipe
GetWindowsDirectoryA
KERNEL32.dll
USER32.dll
ADVAPI32.dll
WS2_32.dll
InternetOpenUrlA
WININET.dll
MPR.dll
RPCRT4.dll
MSVCRT.dll


Remove it with Ad-Aware

  1. Click (here) to download and install Ad-Aware Free Antivirus.
  2. Update the definition files.
  3. Run a full scan of your computer.


Manual removal*

  1. Scan a system with an anti-rootkit tool.
  2. Terminate malicious process(es) (How to End a Process With the Task Manager):

    taskkill.exe:1072
    taskkill.exe:616
    taskkill.exe:1980
    sc.exe:828
    rundll32.exe:1996
    cacls.exe:1632
    cacls.exe:1016

  3. Delete the original Trojan file.
  4. Delete or disinfect the following files created/modified by the Trojan:

    %System%\drivers\acpiec.sys (5 bytes)
    %System%\killkb.dll (12169463 bytes)
    %WinDir%\SoftwareDistribution\DataStore\Logs (96 bytes)
    %System%\CatRoot2 (96 bytes)
    %System%\drivers\etc\hosts (5 bytes)
    C:\$Directory (592 bytes)
    %System%\dllcache (4 bytes)
    %WinDir%\inf (400 bytes)
    %WinDir%update.dll (31471014 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
    %System%\config\systemprofile (4 bytes)
    %System%\drivers\pcidump.sys (5404535 bytes)

  5. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts):
    127.0.0.1 localhost
  6. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
  7. Reboot the computer.

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

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