vobfus | b0762c1e2ff0344d858590350339e18f00c3cfef14af5237e8d53100de6a3578

Analysis

max time kernel
149s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/01/2025, 07:37

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General

Target

JaffaCakes118_55e553d112df4b35653501f07018af3a.exe
Size

204KB
MD5

55e553d112df4b35653501f07018af3a
SHA1

43fd25ee08da37e2790aa2b3559b9f9f0ebfb8dd
SHA256

b0762c1e2ff0344d858590350339e18f00c3cfef14af5237e8d53100de6a3578
SHA512

af6080bf5a623eceda7938fac9099156ebb8c5085c9acc67577d122bf7d04cb19acab55fca396a3d2adf5aea441c0b7dfd2842493ccaf878598014935d6290e7
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_55e553d112df4b35653501f07018af3a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_55e553d112df4b35653501f07018af3a.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_55e553d112df4b35653501f07018af3a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_55e553d112df4b35653501f07018af3a.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\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_55e553d112df4b35653501f07018af3a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_55e553d112df4b35653501f07018af3a.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_55e553d112df4b35653501f07018af3a.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
2680	JaffaCakes118_55e553d112df4b35653501f07018af3a.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2680	JaffaCakes118_55e553d112df4b35653501f07018af3a.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2680	JaffaCakes118_55e553d112df4b35653501f07018af3a.exe
2680	JaffaCakes118_55e553d112df4b35653501f07018af3a.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55e553d112df4b35653501f07018af3a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55e553d112df4b35653501f07018af3a.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:2680

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
fa6326f7b7cf9dd40996c069df992218

SHA1
6e87d46af07e489fa020b8edacd5547b87b4f617

SHA256
7de7605433d41479455a98e2a6fd64f50f7afcf46920cafe3637cea387e27ec0

SHA512
ccdded88e8ab7e3b20b44c14245cfd2f3e061b246bf75dd6f036918b1be9a89eaecb98a90e01a086fa0bc9b467f6f0eecf5d058001def5d1151d2c7be270eb42

Download Submit
memory/2680-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2680-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2680-74-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2680-217-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads