vobfus | 4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2024 10:38

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General

Target

4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe
Size

204KB
MD5

957e11436df143998c493c6576963267
SHA1

fc42103e9c3e42f6499a0bf543dba11f1a5451d9
SHA256

4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89
SHA512

f65cf202c91bb8d457c192867e65e4aafb3824bed87d0aef23983c1c3f1d68d3a3cf88c293266f1a2fafa4df8261990fb12bdc42bcfa845bca5ec3b23cd9f1dc
SSDEEP

3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1L:Xo/BHng5HaVG4G/1z+QVMbg1L

Score

10^/10

vobfus discovery persistence worm

Malware Config

Signatures

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

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	19	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	45	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2524	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2524	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2524	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe
2524	4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe

C:\Users\Admin\AppData\Local\Temp\4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe
"C:\Users\Admin\AppData\Local\Temp\4d7e4fb892e97063de79dfd426cc24e72ed3a6fc57990d30cacd54bc33e3ff89.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
PID:2524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\AG58FPQON.exe

Filesize
204KB

MD5
839d89ebbd11f9a621be91ebf03557b7

SHA1
d67b485a5b9ba1ea46a2f10d447c5f0097986d64

SHA256
b4b767eb39302cac85444d1c5d225e8c6e954efd1acc32c6544e97a3405d4920

SHA512
79ee3a013ca5ffff765debeeffdb61281230add291bcc1a4e9938745dc5e0d14a20003bdeb2c982ac938b16f0096f1049addb4a31260f1996089962c637d73a0

Download Submit
memory/2524-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2524-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2524-67-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2524-281-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads