vobfus | f1639ceea43d91ca68e35c6d5ca329a581c8fd3926747f729c4b2aba696f6610

Analysis

max time kernel
149s
max time network
140s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10/01/2025, 11:15

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General

Target

JaffaCakes118_e2cea13213651faae62bd666d857a1a6.exe
Size

200KB
MD5

e2cea13213651faae62bd666d857a1a6
SHA1

1e4c9e1dc700673aa2f58a889021a3621cfcba8a
SHA256

f1639ceea43d91ca68e35c6d5ca329a581c8fd3926747f729c4b2aba696f6610
SHA512

efdc066bd66edd7732c2b68224b91895ee80939f475099ea0256821ef9e37b9424ff82e59b832d96783db41899476a4739e6d232ff981c3450b505d139f8d454
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\USER\S-1-5-21-312935884-697965778-3955649944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_e2cea13213651faae62bd666d857a1a6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_e2cea13213651faae62bd666d857a1a6.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_e2cea13213651faae62bd666d857a1a6.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_e2cea13213651faae62bd666d857a1a6.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_e2cea13213651faae62bd666d857a1a6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_e2cea13213651faae62bd666d857a1a6.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_e2cea13213651faae62bd666d857a1a6.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
2336	JaffaCakes118_e2cea13213651faae62bd666d857a1a6.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2336	JaffaCakes118_e2cea13213651faae62bd666d857a1a6.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2336	JaffaCakes118_e2cea13213651faae62bd666d857a1a6.exe
2336	JaffaCakes118_e2cea13213651faae62bd666d857a1a6.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e2cea13213651faae62bd666d857a1a6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e2cea13213651faae62bd666d857a1a6.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:2336

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
200KB

MD5
340bc90fba181056984087db8d0a770d

SHA1
0994566a67dfecef32168f4d8d95e0aca53b830c

SHA256
a87e3827ff45c0abb6135a2e4abc774655820b3c576b3bbf10373d70f99cf9f0

SHA512
f4310ed760bdcee6f4d96cd9c67c8a7de0c93f98d83406939d3d9bfc60e2c71905946a6c22c5a61d0a8bd4d9e516a5168bb26106f44f97fdaa779b8f18cdb0f8

Download Submit
memory/2336-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2336-24-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2336-238-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads