Showing posts with label US-CERT. Show all posts
Showing posts with label US-CERT. Show all posts

Thursday, December 27, 2007

Storm keeps coming (4th variant)

They just keep coming...this one is very similar to the 3rd variant we reviewed, but some changes are apparent.
1) Hash: 1f362ad74d62262bff6bcb1d078cbf7d
2) Aside from yet again changing the domain and binary, the hidden files written upon execution are as follows:

Helios Rootkit Detector
Scanning File System For Hidden Files

[*] Scanning Drive C
1 C:\WINDOWS\system32\bldy.config Hidden From API
2 C:\WINDOWS\system32\bldy3a80-61.sys Hidden From API
Execute Duration (in seconds)=18

Loaded Drivers:
Driver File Company Name Description
C:\WINDOWS\System32\bldy3a80-61.sys

Kernel31 Api Log
***** Installing Hooks *****
4012d8 CreateFileA(C:\WINDOWS\System32\bldy.config)
40117f CreateFileA(C:\WINDOWS\System32\bldy3a80-61.sys)

DirwatchData
WatchDir Initilized OK
Watching C:\WINDOWS
Created: C:\WINDOWS\system32\bldy.config
Modifed: C:\WINDOWS\system32\bldy.config
Modifed: C:\WINDOWS\system32
Created: C:\WINDOWS\system32\bldy3a80-61.sys
Modifed: C:\WINDOWS\system32\bldy3a80-61.sys

Better AV coverage again:

AntiVir - TR/Crypt.XDR.Gen
Authentium - W32/Dropper.gen6
Avast - Win32:Zhelatin-ASX
AVG - Dropper.Generic.TLX
BitDefender - Trojan.Peed.IRG
ClamAV - Trojan.Peed-66
DrWeb - Trojan.Spambot.2386
Fortinet - W32/Tibs.G@mm
F-Prot - W32/Dropper.gen6
F-Secure - Email-Worm.Win32.Zhelatin.pr
Kaspersky - Email-Worm.Win32.Zhelatin.pr
NOD32v2 - Win32/Nuwar.BA
Panda - Suspicious file
Prevx1 - Stormy:Worm-All Variants
Sophos - Mal/Dorf-H
Symantec - Trojan.Peacomm
VirusBuster - Trojan.DR.Zhelatin.AS
Webwasher-Gateway - Trojan.Crypt.XDR.Gen

Aside from the inherent value of keeping an eye on the ISC Diary, please refer to the US-CERT alert.
They'll keep coming, we'll keep watching.
Storm keep coming (4th variant) at del.icio.us Digg Storm keep coming (4th variant)

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