Generic.Rebhip.E14B61CE (BitDefender), Worm:Win32/Rebhip.A (Microsoft), HEUR:Trojan.Win32.Generic (Kaspersky), Worm.Win32.Rebhip.A (v) (VIPRE), BackDoor.Siggen.49176 (DrWeb), Generic.Rebhip.E14B61CE (B) (Emsisoft), Trojan.Gen.2 (Symantec), Worm.Win32.Rebhip (Ikarus), Generic.Rebhip.E14B61CE (FSecure), Luhe.Boxed.A (AVG), Win32:Malware-gen (Avast), TSPY_SPATET.SMT (TrendMicro), Trojan.Win32.IEDummy.FD, 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: 86a6c00cd7a5abcd0b6e47b205717032
SHA1: fe4b0a7b6c50a64ff30a732e6ca120873bb3e13f
SHA256: d8eddbf408d2d47c15c4996ed735b513928960a52c17e0222393cd83d6b3fd3f
SSDeep: 3072:JiG9e40HjRWBfvHz7eItPPjtq0svSojstQ9xae1h8geqF/f9DG2FWHJMfXdDv0BH:z4KfvHz7eICYo5xFh8geqRf9hFWHqi
Size: 199680 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: .
Created at: 1992-06-20 01:22:17
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:1744
The Trojan injects its code into the following process(es):
iexplore.exe:1616
File activity
The process iexplore.exe:1616 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 (64 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\UuU.uUu (72 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:1744 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\XX--XX--XX.txt (144 bytes)
C:\Windat\sound\drv\muyss.exe (1281 bytes)
Registry activity
The process iexplore.exe:1616 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "4C 0A 88 B5 40 DC 7C D1 2C 37 91 B6 86 EB A9 3C"
[HKCU\Software\ORM]
"FirstExecution" = "22/01/2014 -- 07:50"
"NewIdentification" = "ORM"
The process %original file name%.exe:1744 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F7 0B 09 4E 4A AF E3 BC 6C 00 65 43 45 D7 1B 6B"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run]
"Policies" = "c:\Windat\sound\drv\muyss.exe"
[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{RJIX537V-BP72-1NF1-6OMV-84TYETB1MJFG}]
"StubPath" = "c:\Windat\sound\drv\muyss.exe Restart"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run]
"Policies" = "c:\Windat\sound\drv\muyss.exe"
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" = "c:\Windat\sound\drv\muyss.exe"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"HKLM" = "c:\Windat\sound\drv\muyss.exe"
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:1744
- 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 (64 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\UuU.uUu (72 bytes)
%Documents and Settings%\%current user%\Application Data\logs.dat (15 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\XX--XX--XX.txt (144 bytes)
C:\Windat\sound\drv\muyss.exe (1281 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"HKCU" = "c:\Windat\sound\drv\muyss.exe"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"HKLM" = "c:\Windat\sound\drv\muyss.exe" - Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.