vobfus | 9a51e0078f313de190d48f44c970ab246ea08bd099cfb79316e32f132c2d3333

Analysis

max time kernel
149s
max time network
151s
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, 07:55

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General

Target

JaffaCakes118_942cf8767cd46403e581d0a26e67803e.exe
Size

204KB
MD5

942cf8767cd46403e581d0a26e67803e
SHA1

a4b7bce8e400d1c18828c6f2805c5f973e3d946a
SHA256

9a51e0078f313de190d48f44c970ab246ea08bd099cfb79316e32f132c2d3333
SHA512

d2e38c165157fa76c9383a26fe04b508ceb0271f9768fd7221e650ed79746292e1e41a2a698f7377ea54998dd44acc29e705ef233a0cdbe3d1492c4e6660bdf3
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_942cf8767cd46403e581d0a26e67803e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_942cf8767cd46403e581d0a26e67803e.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_942cf8767cd46403e581d0a26e67803e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_942cf8767cd46403e581d0a26e67803e.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_942cf8767cd46403e581d0a26e67803e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_942cf8767cd46403e581d0a26e67803e.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_942cf8767cd46403e581d0a26e67803e.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	16	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
3700	JaffaCakes118_942cf8767cd46403e581d0a26e67803e.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3700	JaffaCakes118_942cf8767cd46403e581d0a26e67803e.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3700	JaffaCakes118_942cf8767cd46403e581d0a26e67803e.exe
3700	JaffaCakes118_942cf8767cd46403e581d0a26e67803e.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_942cf8767cd46403e581d0a26e67803e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_942cf8767cd46403e581d0a26e67803e.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:3700

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
534cbc75678342b2f46cef59f9cb557e

SHA1
c65f1c866a6bfaff90127c5a8219f2b2188132c5

SHA256
d3921679650b245908f101dcca09f01b229ef0947c5ee82bd807f9ba04ca41cc

SHA512
f88093a98a036d6c5f3b6749fc63b90d2e1a2bf3815933ab162fc29ab3daf6e2ce61a9a6e7b8b4a6dea4d2ece828e012d82e6f5c1ec7bfbc0ef5c5290809cb2f

Download Submit
memory/3700-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3700-24-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3700-231-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads