vobfus | dff5c8fd4c6ee1ebf08025b9094e991631acc135c5c9df349ea04a0fa7367f17

Analysis

max time kernel
150s
max time network
142s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-01-2025 22:53

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General

Target

JaffaCakes118_d46361c760e1d820b0bd51949d9628ac.exe
Size

204KB
MD5

d46361c760e1d820b0bd51949d9628ac
SHA1

610e8cf5539ee6bddbb06d746005186e43ba5ef1
SHA256

dff5c8fd4c6ee1ebf08025b9094e991631acc135c5c9df349ea04a0fa7367f17
SHA512

e2ea64777420fb88068325ca82dd20e4e911fff0045ce3166d4f896718d677b397bbb8088735b743101bb22d7c94a0026106fcd9da11a64c13818997ce78255f
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_d46361c760e1d820b0bd51949d9628ac.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_d46361c760e1d820b0bd51949d9628ac.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_d46361c760e1d820b0bd51949d9628ac.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_d46361c760e1d820b0bd51949d9628ac.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_d46361c760e1d820b0bd51949d9628ac.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_d46361c760e1d820b0bd51949d9628ac.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_d46361c760e1d820b0bd51949d9628ac.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
2504	JaffaCakes118_d46361c760e1d820b0bd51949d9628ac.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2504	JaffaCakes118_d46361c760e1d820b0bd51949d9628ac.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2504	JaffaCakes118_d46361c760e1d820b0bd51949d9628ac.exe
2504	JaffaCakes118_d46361c760e1d820b0bd51949d9628ac.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d46361c760e1d820b0bd51949d9628ac.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d46361c760e1d820b0bd51949d9628ac.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:2504

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
5207171ca2e0127b47bb51e1e369e7d0

SHA1
fd8962cbb55a4883c126da19f4be4a0d3a5e8bd7

SHA256
2132ae833f56befc7bc2aca077d90baf068fb548ba176982981783a4223511df

SHA512
e3842689ff2f95aa3337f1eee8f4d8641760f58a16088df114855ec550be583122cff4608c6144b3c5f7c8df01ac595b8eb7454df78ab25aa2104703575dc009

Download Submit
memory/2504-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2504-24-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2504-238-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads