vobfus | a8c4ed86850dae468db3ea9745f9be7d37af848d2615b88c6316e0df3f99aa83

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
08/01/2025, 04:50

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General

Target

JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.exe
Size

200KB
MD5

8c406de9f0ef7dee5a9579da3c49fb59
SHA1

bbd71c6cba73ac8b30e82ea348421afc1ca0a0cf
SHA256

a8c4ed86850dae468db3ea9745f9be7d37af848d2615b88c6316e0df3f99aa83
SHA512

3403d9b3052c7ce605ae3a1e3f5dcfc4be3137f22732f2f089411b4c2652bb9781f5297cbf6ba35657eada99656f51cac2c2f35ed756188118fbda088bcf96a0
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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.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_8c406de9f0ef7dee5a9579da3c49fb59.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.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_8c406de9f0ef7dee5a9579da3c49fb59.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	14	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	45	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4860	JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4860	JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4860	JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.exe
4860	JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8c406de9f0ef7dee5a9579da3c49fb59.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:4860

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
f28ce8bd176f43f169a5562a2716ac05

SHA1
8bf0ccd8bc647cca231aa028cd8cc9aec63f4844

SHA256
0d288d38a754c87f293175b0afddb454ffbb38110aaded4ac29f644b15d21ac3

SHA512
ba2af5e40f1f949211814b6a530c549836886fc723baf775abbcdc4fc2129a4c4eb18f5748d25ad621f3b1f983315117dc65b5247a18f272e61265da2a191ea3

Download Submit
memory/4860-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4860-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4860-74-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4860-217-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads