vobfus | 3799bc9954fe618d429352d8c17fea1ec907f6600e5d4602434d7dd65f8a0140

Analysis

max time kernel
150s
max time network
134s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
09/01/2025, 16:44

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General

Target

JaffaCakes118_cd1cf7347d77286f93b8987b351f1b2f.exe
Size

204KB
MD5

cd1cf7347d77286f93b8987b351f1b2f
SHA1

b3fa19a6f07b03e2ce7eb0a8f205bae529f85b87
SHA256

3799bc9954fe618d429352d8c17fea1ec907f6600e5d4602434d7dd65f8a0140
SHA512

9bdfb49df51fa35d23cb99989e3de64475f8dc34aa7d85015f66aeea4a76214f68476fca35677fe1687742dde3e354c513ad148486e67489e0ed8ec865854ca6
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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_cd1cf7347d77286f93b8987b351f1b2f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_cd1cf7347d77286f93b8987b351f1b2f.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_cd1cf7347d77286f93b8987b351f1b2f.exe
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_cd1cf7347d77286f93b8987b351f1b2f.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_cd1cf7347d77286f93b8987b351f1b2f.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_cd1cf7347d77286f93b8987b351f1b2f.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_cd1cf7347d77286f93b8987b351f1b2f.exe

Script User-Agent 2 IoCs

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

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

pid	Process
2776	JaffaCakes118_cd1cf7347d77286f93b8987b351f1b2f.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2776	JaffaCakes118_cd1cf7347d77286f93b8987b351f1b2f.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2776	JaffaCakes118_cd1cf7347d77286f93b8987b351f1b2f.exe
2776	JaffaCakes118_cd1cf7347d77286f93b8987b351f1b2f.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cd1cf7347d77286f93b8987b351f1b2f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cd1cf7347d77286f93b8987b351f1b2f.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:2776

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
d3d302a889e955054200cf1807ef2c94

SHA1
fc080498d5daeac8d6c6423fb01de03221001870

SHA256
914dc9cb1b72c6fb291e43037c44be773b92b894bf6fceb904801da95f6b696a

SHA512
539c66771f186bebe07babee23bf8b7ad9bf8498355accbd3a24eca512c66eee7308d7b97d6c06ef8890a7f0b45243badb629b685094b5a95d9fa31962aebd6e

Download Submit
memory/2776-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2776-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2776-74-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2776-217-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads