Gen:Variant.Barys.2957 (BitDefender), HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic.pak!cobra (VIPRE), BackDoor.Comet.152 (DrWeb), Gen:Variant.Barys.2957 (B) (Emsisoft), Artemis!6572F58DD4E7 (McAfee), Trojan.Inject (Ikarus), Gen:Variant.Barys.2957 (FSecure), Inject.AMHD (AVG), MSIL:Injector-FT [Trj] (Avast), Trojan.Win32.IEDummy.FD, Trojan.Win32.Sasfis.FD, VirTool.Win32.DelfInject.FD, WormRebhip.YR, GenericAutorunWorm.YR, GenericInjector.YR (Lavasoft MAS)Behaviour: Trojan, Worm, VirTool, WormAutorun
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 6572f58dd4e7d757d7a28ff9ff098d95
SHA1: 97179374c2d0f23aa3ce249c1640f131f9d20982
SHA256: eaca41f8a095fa1c4b5c19d11099c9bd137d611b7b10bb7dfffd44a3203c5b26
SSDeep: 6144:OKZSVaXEG8f58MYyUnt X 8h0jJSzuRZA1HWRSlPMY6R5JWzICMd7mDO5:OKZS88/YyW 70De8IMY6R5JWsCMsE
Size: 401408 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2014-01-14 18:52:59
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):
cscript.exe:1248
cscript.exe:632
cscript.exe:996
cscript.exe:1520
cscript.exe:1136
vbc.exe:1812
server.exe:768
The Trojan injects its code into the following process(es):
%original file name%.exe:436
iexplore.exe:488
File activity
The process cscript.exe:1248 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\teste.txt (2 bytes)
The process cscript.exe:632 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\teste.txt (2 bytes)
The process cscript.exe:996 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\teste.txt (2 bytes)
The process cscript.exe:1520 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\teste.txt (2 bytes)
The process cscript.exe:1136 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\teste.txt (2 bytes)
The process iexplore.exe:488 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 (8856 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\UuU.uUu (56 bytes)
%Documents and Settings%\%current user%\Application Data\logs.dat (15 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\teste.vbs (7385 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\teste.txt (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\teste.vbs (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\XX--XX--XX.txt (0 bytes)
The process vbc.exe:1812 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
C:\dir\install\install\server.exe (7547 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\XX--XX--XX.txt (235 bytes)
Registry activity
The process %original file name%.exe:436 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "90 6C D0 E2 48 71 DF EA FB 9E A8 04 F8 36 C7 76"
[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"
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]
"CryptedFile" = "c:\%original file name%.exe"
The process cscript.exe:1248 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B7 E6 F4 C4 C0 E3 EA 98 33 5C 7B 73 F3 64 60 79"
The process cscript.exe:632 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "50 18 4D DA 71 10 9E 49 CC DA B0 71 DD F3 17 8A"
The process cscript.exe:996 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "CA 56 47 E2 A9 D2 CB BF 2D 9D 29 9F 5B 6A FC E1"
The process cscript.exe:1520 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B7 E4 34 09 C3 35 87 72 DD 43 8F 96 91 23 27 36"
The process cscript.exe:1136 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 37 44 AD 69 D9 FF 44 53 F2 71 9A 72 4B 3A 69"
The process iexplore.exe:488 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "00 C7 25 3F 90 D8 92 0B A9 94 67 F6 7D 1A E9 2C"
[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\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"
"Personal" = "%Documents and Settings%\%current user%\My Documents"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%System%]
"cscript.exe" = "Microsoft (R) Console Based Script Host"
[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" = "16/01/2014 -- 01:59"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\c:\dir\install\install]
"server.exe" = "Visual Basic Command Line Compiler"
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 vbc.exe:1812 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "36 F6 BA 14 BB E8 15 F1 96 69 FA B1 A8 DC 9B AC"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run]
"Policies" = "c:\dir\install\install\server.exe"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run]
"Policies" = "c:\dir\install\install\server.exe"
[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{5AU35L84-83D7-HN1P-5BFP-XS3217F242OM}]
"StubPath" = "c:\dir\install\install\server.exe Restart"
The process server.exe:768 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B2 8B 20 93 F6 CA DA CE 88 85 AE 79 00 99 1C 5B"
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):
cscript.exe:1248
cscript.exe:632
cscript.exe:996
cscript.exe:1520
cscript.exe:1136
vbc.exe:1812
server.exe:768 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\teste.txt (2 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\XxX.xXx (8856 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\UuU.uUu (56 bytes)
%Documents and Settings%\%current user%\Application Data\logs.dat (15 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\teste.vbs (7385 bytes)
C:\dir\install\install\server.exe (7547 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]
"CryptedFile" = "c:\%original file name%.exe" - Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.