vobfus | 02346ea6a0f167dec2e6bc60e5eead3d02658982c50a2cd0ba7bdcf51353cfd6

Analysis

max time kernel
150s
max time network
144s
platform
windows7_x64
resource
win7-en-20211208
submitted
10-02-2022 00:57

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

alphabeta.exe
Size

220KB
MD5

c25960255a0cc976f49049b2ffb0be1b
SHA1

11654f79ef7e2c945f69cd8c04e817ed9774eb3a
SHA256

02346ea6a0f167dec2e6bc60e5eead3d02658982c50a2cd0ba7bdcf51353cfd6
SHA512

e5d0f2846f25e9e355053543d5308d129686c17f22837b50046ed3b0455780ce9f05dd6aaf4bceb4b6c82744bdb703c5185ba450ba387ed09aa622d64ca1f193

Score

10^/10

vobfus persistence worm

Malware Config

Signatures

Vobfus
A widespread worm which spreads via network drives and removable media.
worm vobfus

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

alphabeta.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	alphabeta.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	alphabeta.exe
Key created	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	alphabeta.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	alphabeta.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

alphabeta.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	alphabeta.exe
Key created	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run	alphabeta.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	alphabeta.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	alphabeta.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

Processes:

description	flow	ioc
HTTP User-Agent header	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	4	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

alphabeta.exe

pid process

1748 alphabeta.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

alphabeta.exe

pid process

1748 alphabeta.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

alphabeta.exe

pid process

1748 alphabeta.exe
1748 alphabeta.exe

pid	process
1748	alphabeta.exe

pid	process
1748	alphabeta.exe

pid	process
1748	alphabeta.exe
1748	alphabeta.exe

C:\Users\Admin\AppData\Local\Temp\alphabeta.exe
"C:\Users\Admin\AppData\Local\Temp\alphabeta.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
PID:1748

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1748-53-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download