vobfus | 304fdec479ed7b603a1dc258af7f7dc74476066a745ea06c4aa4c3db5768c6cd

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09/01/2025, 18:54

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General

Target

JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.exe
Size

204KB
MD5

cfba2b10417b9212d8ed6c881fb9645d
SHA1

ccee364feed1b127f48d85ab9add6bd96c10e7fe
SHA256

304fdec479ed7b603a1dc258af7f7dc74476066a745ea06c4aa4c3db5768c6cd
SHA512

daee138cb324693a4dd0ac14508a78c64784f57373313b3d53f4d3d97c4f8bf0b711880cecf5654660de7f69780832c2a83105cbfaef444b9ef137a29c72dd2c
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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.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_cfba2b10417b9212d8ed6c881fb9645d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.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_cfba2b10417b9212d8ed6c881fb9645d.exe

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	15	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1408	JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1408	JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1408	JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.exe
1408	JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfba2b10417b9212d8ed6c881fb9645d.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:1408

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
b108a5dc705bf38277ddf59b1a5e972d

SHA1
2721cea1bae7ca72f8609f01170142bec6df7f04

SHA256
686e53e93ced0ed6964429beef7c656c55839ac86e55c3593965687f0427392a

SHA512
2d28713d97ac107a377465adc491ec56efdbcbbb24db8ae0809201acdc83df1742b028d274185c7a15bc9765f2ccb8ca2139a1aa1757abc387e3fe5a252fe426

Download Submit
memory/1408-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1408-17-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1408-224-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads