HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic!BT (VIPRE), Trojan.Win32.Jorik!IK (Emsisoft), Trojan.Win32.IEDummy.FD, WormRebhip.YR, GenericAutorunWorm.YR, GenericInjector.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.
Summary
MD5: d285f2e288a87aff56d3908c4ca07c54
SHA1: 3d3258a09185e275613c5cfde1e4d652629ef4e4
SHA256: 755972233bf4bc61cfbae6912a41b959ef9ea72818f2b9c1f1f7050af1b8823e
SSDeep: 6144:FLdRTRQ1bYGHEQkXW4uLuhkBxR1FkyClmy/6bbJFtG KBq8TZYiUrEMm:HbM0GTkXW46YaR1FkczZKBAm
Size: 331776 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2013-12-27 20:19:02
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).
Dynamic Analysis
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):
%original file name%.exe:1304
%original file name%.exe:828
ctmons.exe:752
ctmons.exe:1508
The Trojan injects its code into the following process(es):
iexplore.exe:1572
File activity
The process iexplore.exe:1572 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\XxX.xXx (12952 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\UuU.uUu (32 bytes)
%Documents and Settings%\%current user%\Application Data\logs.dat (15 bytes)
The Trojan deletes the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\UuU.uUu (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\XxX.xXx (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\XX--XX--XX.txt (0 bytes)
The process %original file name%.exe:828 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%WinDir%\ctlogs\ctmons.exe (2105 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\XX--XX--XX.txt (235 bytes)
Registry activity
The process iexplore.exe:1572 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BC 66 5B E5 DB 0C 61 15 B7 25 C5 B7 AC EA E7 93"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%WinDir%\ctlogs]
"ctmons.exe" = "Pgd8XSz6aBnI2"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"
"Personal" = "%Documents and Settings%\%current user%\My Documents"
[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"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\vÃÂtima]
"NewIdentification" = "vÃÂtima"
"FirstExecution" = "31/12/2013 -- 04:55"
The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"
The Trojan 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:
"UNCAsIntranet" = "1"
The Trojan modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:
"ProxyBypass" = "1"
The process %original file name%.exe:1304 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "43 A6 6A 16 2D 8B DF 12 58 AF F4 3C D7 4F C0 A2"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
The process %original file name%.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" = "0A 5E 74 62 87 64 D3 F6 87 71 73 65 D7 DA E6 FA"
[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{37610127-5753-4W0V-QELM-0W5Q43LDY3TH}]
"StubPath" = "%WinDir%\ctlogs\ctmons.exe Restart"
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"HKCU" = "%WinDir%\ctlogs\ctmons.exe"
The process ctmons.exe:752 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B5 0B 1A CF F2 3D 54 EB C6 8C 69 9B B1 7F 47 8E"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"
The process ctmons.exe:1508 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "E9 91 C4 AB 63 4E 2F E2 01 8D 76 2A 7F 18 DA A9"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
Network activity (URLs)
No activity has been detected.
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.
Removals
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*
- Terminate malicious process(es) (How to End a Process With the Task Manager):
%original file name%.exe:1304
%original file name%.exe:828
ctmons.exe:752
ctmons.exe:1508 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\XxX.xXx (12952 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\UuU.uUu (32 bytes)
%Documents and Settings%\%current user%\Application Data\logs.dat (15 bytes)
%WinDir%\ctlogs\ctmons.exe (2105 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\XX--XX--XX.txt (235 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"HKCU" = "%WinDir%\ctlogs\ctmons.exe" - Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.