vobfus | 83a048622a480815ca00d023a796fe6caf83bae6a4a5006fa5e991016c102c97

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07/01/2025, 02:35

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General

Target

JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.exe
Size

204KB
MD5

48a45451b72c7b3b6cb8bb9861a0b3c2
SHA1

88a258bfeead3444a9706b7a4a7a843bca6308be
SHA256

83a048622a480815ca00d023a796fe6caf83bae6a4a5006fa5e991016c102c97
SHA512

e88d70f4742a984fef3cb916c28eff9222ae4748431f9c9b426ad31372291732b47f50e72c715260678384144677cbf70b8395feb3580ee99743faa85877b4fe
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\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.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_48a45451b72c7b3b6cb8bb9861a0b3c2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.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_48a45451b72c7b3b6cb8bb9861a0b3c2.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	18	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	42	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1828	JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1828	JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1828	JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.exe
1828	JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48a45451b72c7b3b6cb8bb9861a0b3c2.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:1828

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
9b661c989b23f5bad125184f7cd8eb1b

SHA1
e430b635298ebcbe7083bc96d42b4c9aa56ba9d4

SHA256
226194a0b671ed979d83d6a00c34ab123c2e20f1e9760945406091c756a78c79

SHA512
a9aaf8476f6b497e7a28df9da08b431bbb2837fbae961df52215f3c250572c53c2a6f8a0999c79ab814585caa28c1d30c38948ea1427d216374a90cb109a6c24

Download Submit
memory/1828-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1828-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1828-67-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1828-274-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads