HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic!SB.0 (VIPRE), GenericAutorunWorm.YR, TrojanLoadMoney.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: 08d2f16d28b23f585176f05e50e51018
SHA1: 4071eaea0b40bf26183cdb932f1537e664f44913
SHA256: 89b28a1a74ab93e52dafaa80b14167d94096a6da30b8d9fec79ca33c2a083507
SSDeep: 192:7v5gE7LdH nlaurmQs9pFsrK9ZnZnJSfsvAvhEiHB6zdvlpF:7lHdel5rmQDrK97YhYzdvlL
Size: 12800 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2014-03-11 09:55:02
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:1844
The Trojan injects its code into the following process(es):No processes have been created.
File activity
The process %original file name%.exe:1844 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%WinDir%\hw.exe (12 bytes)
%WinDir%\hw.inf (198 bytes)
%System%\drivers\etc\hosts (1 bytes)
Registry activity
The process %original file name%.exe:1844 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Host Write" = "%WinDir%\hw.exe"
Network activity (URLs)
No activity has been detected.
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 1104 bytes in size. The following strings are added to the hosts file listed below:
| 83.170.113.55 | pagead2.googlesyndication.com |
| 83.170.113.55 | content.yieldmanager.edgesuite.net |
| 83.170.113.55 | cdnx.tribalfusion.com |
| 83.170.113.55 | s0.2mdn.net |
| 83.170.113.55 | cdn.adnxs.com |
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:1844
- Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%WinDir%\hw.exe (12 bytes)
%WinDir%\hw.inf (198 bytes)
%System%\drivers\etc\hosts (1 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Host Write" = "%WinDir%\hw.exe" - Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
- Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.