vobfus | da35e3f8dc769cf2b0b6f34ed806e1daf8834df2de0ddfa698f68172ed1f457f

Analysis

max time kernel
149s
max time network
133s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
09/01/2025, 08:50

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General

Target

JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.exe
Size

204KB
MD5

c3df5ee4f9cbe2f10b1d8a832ad94896
SHA1

28df1646f7fe0de2cb463a154f7bc3bbe0b4e188
SHA256

da35e3f8dc769cf2b0b6f34ed806e1daf8834df2de0ddfa698f68172ed1f457f
SHA512

78ca83d8fff0f2a27fabdca5d10a5bba19f9f08ff53fb243ba16206fd963d9919bc116a0e273dd1454eed992f60fdcc14463f1bea7ac870a2e25d1e964d26b0b
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_c3df5ee4f9cbe2f10b1d8a832ad94896.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.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_c3df5ee4f9cbe2f10b1d8a832ad94896.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.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_c3df5ee4f9cbe2f10b1d8a832ad94896.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
2220	JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2220	JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2220	JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.exe
2220	JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c3df5ee4f9cbe2f10b1d8a832ad94896.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:2220

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
e62d2172f64cc5596f535053c0b5416e

SHA1
b555e91db11b080e6b6f45d5a3ce27611f43e498

SHA256
7d5e698a24b745840e0b1e9fa2da86287be89cdd934857d268aec4e5d00f218a

SHA512
6eb22eba418c34879b6cb26f1575a29e355a7db0540da71b0914e630ad436fcaee00cf7c7bbed42dfcdb94ba3473e4cdf674a0eaac474dda93b1a29911cdbb1f

Download Submit
memory/2220-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2220-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2220-74-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2220-288-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads