vobfus | d0357a202597ad52b0ed6cd389a4862a73a9b55b2c99ee53fa3ca37f6a97f3cc

Analysis

max time kernel
150s
max time network
134s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09/01/2025, 08:55

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General

Target

JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.exe
Size

204KB
MD5

c3ff7181c757adefccbb97e244f61e7a
SHA1

6d73bccb94cc17a36d16cbb2b048cc75ab9b4b28
SHA256

d0357a202597ad52b0ed6cd389a4862a73a9b55b2c99ee53fa3ca37f6a97f3cc
SHA512

629dc7c8cd09f7ad92d0c0841f0b7a620c486ec82b2ff7c868f07f2f0d3882a3c7f825369062ec051c261e151ef44ebff38e761220ab1a947ff43b97320af91f
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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.exe
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.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_c3ff7181c757adefccbb97e244f61e7a.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
2228	JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2228	JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2228	JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.exe
2228	JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c3ff7181c757adefccbb97e244f61e7a.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:2228

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
a261342cafbf8f2f6eedc501d1ae9603

SHA1
0a160c365b79aa1b4d82d0166cbabfcb272bb33a

SHA256
5ba1b154941e0403f3c45f5eab11d46784602bfcf9f6738d447d7a30162fc0f5

SHA512
b5d8bde9003001525d166b614dd4a542fd53a9e864b21abd429f311bb5b96055d2ca6ac993d02dac612f3b8e234911f7d1685de29009766bd170ec21241d1312

Download Submit
memory/2228-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2228-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2228-67-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2228-281-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads