vobfus | 9a15840ab5bbc928bf9558a8107cdfb032a8d8af8e2cbe19f82cabe7e088fcdd

Analysis

max time kernel
150s
max time network
141s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
11/01/2025, 07:58

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General

Target

JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe
Size

204KB
MD5

fb7c6f3670f954ab96906fe495c01ed8
SHA1

04d0f934948c5efba9046f783d1f1a37b6f95690
SHA256

9a15840ab5bbc928bf9558a8107cdfb032a8d8af8e2cbe19f82cabe7e088fcdd
SHA512

e96711a7d09d8ed5e06371dbae84b7588d2feec6a9c8aa7a410d0362bae24ce1ae2114a3ce67a9bf648424dbbb7c328f59cc326bc52770896e65a640c567c043
SSDEEP

3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1:Xo/BHng5HaVG4G/1z+QVMbg1

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
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.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"	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.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	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe

Script User-Agent 2 IoCs

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

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2420	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2420	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2420	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe
2420	JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fb7c6f3670f954ab96906fe495c01ed8.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:2420

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
89a0cb7b2a4d3605214f39debc67b2e9

SHA1
143f0487ff5b4193b537e7145a3bf32a505b8e68

SHA256
2a7133bd9f409d66845389ba6a7e1ba4a50198fec41ea079c5e2794f76b5a859

SHA512
100a9f2da9ea709cbe0c7a455014e1d5acb412520f173e1647a35396d73fb7293c75485a41e6ff9088cf96b42bb18ac97cc59a47d39279e135c4b5e2d7582207

Download Submit
memory/2420-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2420-24-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2420-238-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads