vobfus | a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648

General

Target

a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe
Size

763KB
MD5

6a460f7cda474a418143dffd03d86a44
SHA1

dbc6390879dae3a64064353a018ece637abf0a43
SHA256

a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648
SHA512

26fad90965b8925f08f2c2f1bb4bd6ef322be45a0e213524ce41a662d0e27bcf3f545577f4db17721ce071a3e80377d87ce4c1729be73844beeee8f4e474349b

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:

a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run	a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe

Script User-Agent 2 IoCs

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

Processes:

description	flow	ioc
HTTP User-Agent header	20	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	24	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe

pid process

4044 a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe

pid process

4044 a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe

pid	process
4044	a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe
4044	a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe

C:\Users\Admin\AppData\Local\Temp\a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.exe
"C:\Users\Admin\AppData\Local\Temp\a3316eecf5c835e735c5a8e83bf1fb7b25f7dba67476eb25554e23d69d037648.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:4044

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/4044-114-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads