Trojan.SalityStub.F_20c92c4f3c

by malwarelabrobot on October 2nd, 2014 in Malware Descriptions.

Trojan.Win32.Small.cox (Kaspersky), Win32.Sality.3 (B) (Emsisoft), Trojan.SalityStub.F (AdAware), Virus.Win32.Sality.FD, Virus.Win32.Sality.2.FD, VirusSality.YR, GenericAutorunWorm.YR, GenericInjector.YR (Lavasoft MAS)
Behaviour: Trojan, Worm, Virus, WormAutorun


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

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

MD5: 20c92c4f3c7761050e518ae81ddf9fed
SHA1: 6f7f0fcb3da3a7b284bbbe663091edd5513f338f
SHA256: 2355e819fd64aac4dce8ab996b55bcf4d99fd1046676e7fefb17262f78d51a24
SSDeep: 1536:6Kl9ZYZr7Mc16Nxyy E/HcGpYVeMNQcIJ4teo636dYy:ZYp7MQyyfZGaVdNPIJ4teiYy
Size: 99328 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2010-11-05 02:25:00
Analyzed on: WindowsXPESX 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):

mscorsvw.exe:1912

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

%original file name%.exe:508
Explorer.EXE:840

Mutexes

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

File activity

The process %original file name%.exe:508 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%WinDir%\system.ini (72 bytes)
%Program Files%\Common Files\Adobe\ARM\1.0\AdobeARM.exe (4 bytes)
C:\autorun.inf (238 bytes)
%Program Files%\Adobe\Reader 9.0\Reader\Reader_sl.exe (840 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\vshqwa.exe (561 bytes)
C:\cqhpa.exe (99 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\winoees.exe (561 bytes)
%Program Files%\Common Files\Java\Java Update\jusched.exe (176 bytes)
\\XP1\PIPE\srvsvc (72 bytes)

The Trojan deletes the following file(s):

%WinDir%\2861b5 (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\winoees.exe (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\vshqwa.exe (0 bytes)

Registry activity

The process mscorsvw.exe:1912 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\.NETFramework\v2.0.50727\NGenService\State]
"AccumulatedWaitIdleTime" = "2340000"

The process %original file name%.exe:508 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Security Center]
"UacDisableNotify" = "1"

[HKCU\Software\Stvncyfrlda]
"m4_0" = "0"
"m3_1" = "1718420804"
"m3_0" = "17001001"

[HKCU\Software\Stvncyfrlda\168128873]
"-1648771660" = "30"

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"

[HKCU\Software\Stvncyfrlda]
"m2_2" = "3470576471"
"m2_0" = "5517"
"m2_1" = "1735293664"
"m4_2" = "3470581466"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system]
"EnableLUA" = "0"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"GlobalUserOffline" = "0"

[HKCU\Software\Stvncyfrlda\168128873]
"1735290733" = "14"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Security Center]
"AntiVirusOverride" = "1"

[HKLM\SOFTWARE\Microsoft\Security Center\Svc]
"UpdatesDisableNotify" = "1"

[HKCU\Software\Stvncyfrlda]
"m4_1" = "1735290733"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Stvncyfrlda]
"m3_2" = "3487544563"

[HKLM\SOFTWARE\Microsoft\Security Center]
"FirewallOverride" = "1"

[HKCU\Software\Stvncyfrlda]
"m1_0" = "1431655765"
"m1_2" = "2322242303"
"m1_1" = "692605188"

[HKLM\SOFTWARE\Microsoft\Security Center\Svc]
"UacDisableNotify" = "1"

[HKCU\Software\Stvncyfrlda\168128873]
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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

[HKCU\Software\Stvncyfrlda\168128873]
"-824385830" = "0"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"Hidden" = "2"

[HKLM\SOFTWARE\Microsoft\Security Center\Svc]
"FirewallOverride" = "1"

[HKCU\Software\Stvncyfrlda\168128873]
"910904903" = "0"
"1821809806" = "0200687474703A2F2F7061647275702E636F6D2F736F62616B61312E67696600687474703A2F2F3139302E3132302E3232372E39313A383038302F736F62616B61766F6C6F732E676966"

[HKLM\SOFTWARE\Microsoft\Security Center]
"FirewallDisableNotify" = "1"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "92 63 A0 EB 97 3A 96 E3 F2 63 2C CC 1F FC 95 F5"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"

[HKLM\SOFTWARE\Microsoft\Security Center\Svc]
"FirewallDisableNotify" = "1"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Security Center]
"UpdatesDisableNotify" = "1"

[HKCU\Software\Stvncyfrlda\168128873]
"86519073" = "75"

[HKLM\SOFTWARE\Microsoft\Security Center\Svc]
"AntiVirusOverride" = "1"

Firewall notifications are disabled:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DisableNotifications" = "1"

Antivirus notifications are disabled:

[HKLM\SOFTWARE\Microsoft\Security Center]
"AntiVirusDisableNotify" = "1"

Adds a rule to the firewall Windows which allows any network activity:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\c:]
"%original file name%.exe" = "c:\%original file name%.exe:*:Enabled:ipsec"

Antivirus notifications are disabled:

[HKLM\SOFTWARE\Microsoft\Security Center\Svc]
"AntiVirusDisableNotify" = "1"

A firewall is disabled:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"EnableFirewall" = "0"

Dropped PE files

MD5 File path
41bb94ef6a6d7ac030301ab07f4b945c c:\cqhpa.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

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
.text 4096 69632 66048 5.53563 c20cd8474b7325791aa797c3a9e4d348

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 266
5ff0c334c608392ad811794f18fe9f01
ae2be3e411d3cfd4b339377dbb0fa12e
6c3f51f80fdcbec81e18ded608294606
c499a07f04be440c35bbd762fbc83a16
0ad4ec5f03e616d1b685750a7dfcb718
215da01934bf598825720963cef55ae8
70caa9dd0a74da0186e68966d062e96b
1c14697372b5f70da288179f36fb0667
f3c420efdd917149b5d5381754d7046b
4e9ec84fea2f7d3f0a1fe0030159f6b7
3b9ba33428156d858c47f364d1439691
4e30a255c686c53a3b6c05491202a8b4
0bd296410f1bae0613021a9932c3d7a2
ec163d132fb6136003616d1225d40cee
19d9ae78b5825a31760a5dc34813c336
39471a78d34cb5a76c83fa03f7619047
e60b5fa9a06051346729b8b658529955
d929d9a68eccf8da2a0adc998e0233ff
f401c75f53ec444064a0289764721647
e7362488ecb2f43687fc64515f4cd120
7c40d26902060e5cec18bbf07e2110bf
1af921ab0325e568cf8aa0316dfad9d9
f586d8be76426ff58ad7683620a723a0
ab513a3b5ffd3456b0c6bc9509716c00
c4f66ecc1939d18bf35c62107d75ceb9

URLs

No activity has been detected.

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Web Traffic was not found.

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

%original file name%.exe_508:

.text
KERNEL32.dll
SHELL32.DLL
ShellExecuteA
KERNEL32.DLL
%original file name%.exe
0c92c4f3c7761050e518ae81ddf9fed.exe
hXXp://padrup.com/sobaka1.gif
hXXp://190.120.227.91:8080/sobakavolos.gif
hXXp://89.11
.info/home.gifIh
bW.text
JKERNEL32.dll
%x.exe
h.rdla&
mH.MN8
T4.At%
S.twa
.klkjw:9fqwiBumW
.sysa
Zc.pBTa
~%s:*:yd:
.!.VF*
.d&?%x=
GUrlA'
"\'Web%w}
HTTP)s'PS
2GUARDCMD
o.ENHCDM
wWEBWUPD
MM.PF
%xn'[
>>?456789:;<=
!"#$%&'()* ,-./01
B.PPP
%fvq(
TCp|Q
%F" *" a
ADVAPI32.dll
MSVCRT.dll
SHELL32.dll
USER32.dll
WS2_32.dll
RegCloseKey
SHFileOperationA

%original file name%.exe_508_rwx_00401000_00011000:

KERNEL32.dll
SHELL32.DLL
ShellExecuteA
KERNEL32.DLL
%original file name%.exe
.text
0c92c4f3c7761050e518ae81ddf9fed.exe
hXXp://padrup.com/sobaka1.gif
hXXp://190.120.227.91:8080/sobakavolos.gif
hXXp://89.11
.info/home.gifIh
bW.text
JKERNEL32.dll
%x.exe
h.rdla&
mH.MN8
T4.At%
S.twa
.klkjw:9fqwiBumW
.sysa
Zc.pBTa
~%s:*:yd:
.!.VF*
.d&?%x=
GUrlA'
"\'Web%w}
HTTP)s'PS
2GUARDCMD
o.ENHCDM
wWEBWUPD
MM.PF
%xn'[
>>?456789:;<=
!"#$%&'()* ,-./01
B.PPP
%fvq(
TCp|Q
%F" *" a
ADVAPI32.dll
MSVCRT.dll
SHELL32.dll
USER32.dll
WS2_32.dll
RegCloseKey
SHFileOperationA

%original file name%.exe_508_rwx_00520000_010BA000:

hXXp://89.11
.info/home.gifIh
bW.text
JKERNEL32.dll
%x.exe
hXXp://89.119.67.154/testo5/
hXXp://kukutrustnet777.info/home.gif
hXXp://kukutrustnet888.info/home.gif
hXXp://kukutrustnet987.info/home.gif
.text
KERNEL32.dll
.reloc
USER32.dll
h.rdata
H.data
ntoskrnl.exe
Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 6.0)
Software\Classes\Local Settings\Software\Microsoft\Windows\Shell\MuiCache
Software\Microsoft\Windows\CurrentVersion\Internet Settings
Software\Microsoft\Windows\CurrentVersion
hXXp://VVV.klkjwre9fqwieluoi.info/
hXXp://kukutrustnet777888.info/
Software\Microsoft\Windows\CurrentVersion\policies\system
Software\Microsoft\Windows\ShellNoRoam\MUICache
%s:*:Enabled:ipsec
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced
GdiPlus.dll
hXXp://
ipfltdrv.sys
VVV.microsoft.com
?%x=%d
&%x=%d
SYSTEM.INI
USER32.DLL
.%c%s
\\.\amsint32
NTDLL.DLL
autorun.inf
ADVAPI32.DLL
win%s.exe
%s.exe
WININET.DLL
InternetOpenUrlA
avast! Web Scanner
Avira AntiVir Premium WebGuard
cmdGuard
cmdAgent
Eset HTTP Server
ProtoPort Firewall service
SpIDer FS Monitor for Windows NT
Symantec Password Validation
WebrootDesktopFirewallDataService
WebrootFirewall
%d%d.tmp
SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList
%s\%s
%s\Software\Microsoft\Windows\CurrentVersion\Ext\Stats
Software\Microsoft\Windows\CurrentVersion\Ext\Stats
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
KERNEL32.DLL
Explorer.exe
A2CMD.
ASHWEBSV.
AVGCC.AVGCHSVX.
DRWEB
DWEBLLIO
DWEBIO
FSGUIEXE.
MCVSSHLD.
NPFMSG.
SYMSPORT.
WEBSCANX.
%c%d_%d
purity_control_%x
.adata
M_%d_
?456789:;<=
!"#$%&'()* ,-./0123
mong%WinDir%\
%WinDir%\hywjfubtsnl.log
hXXp://padrup.com/sobaka1.gif
hXXp://190.120.227.91:8080/sobakavolos.gif
%System%\drivers\lnpomn.sys
26465783542
SHELL32.DLL
ShellExecuteA
GetProcessHeap
GetWindowsDirectoryA
RegEnumKeyExA
RegDeleteKeyA
RegOpenKeyExA
RegCreateKeyA
RegCloseKey
SHFileOperationA
&3&3&3&389
%F" *" a
ADVAPI32.dll
MSVCRT.dll
SHELL32.dll
WS2_32.dll

%original file name%.exe_508_rwx_023C0000_00002000:

SHELL32.DLL
ShellExecuteA
KERNEL32.DLL
.text

%original file name%.exe_508_rwx_024D0000_00001000:

|%original file name%.exeM_508_

Explorer.EXE_840_rwx_01450000_00002000:

SHELL32.DLL
ShellExecuteA
KERNEL32.DLL
.text

Explorer.EXE_840_rwx_01C60000_00001000:

|explorer.exeM_840_


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. Terminate malicious process(es) (How to End a Process With the Task Manager):

    mscorsvw.exe:1912

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

    %WinDir%\system.ini (72 bytes)
    %Program Files%\Common Files\Adobe\ARM\1.0\AdobeARM.exe (4 bytes)
    C:\autorun.inf (238 bytes)
    %Program Files%\Adobe\Reader 9.0\Reader\Reader_sl.exe (840 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\vshqwa.exe (561 bytes)
    C:\cqhpa.exe (99 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\winoees.exe (561 bytes)
    %Program Files%\Common Files\Java\Java Update\jusched.exe (176 bytes)
    \\XP1\PIPE\srvsvc (72 bytes)

  4. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
  5. Reboot the computer.

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

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