vobfus | e81af08d77f8c65f1c5a7e2701b6eaca1b454f839802466d9e23cd735a3f2687

Analysis

max time kernel
149s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06/01/2025, 06:11

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General

Target

JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.exe
Size

200KB
MD5

12cd6efc662011af5bc84ab5ae8e0117
SHA1

57feb9663393e65fd5aedc2e278749223a7ad0df
SHA256

e81af08d77f8c65f1c5a7e2701b6eaca1b454f839802466d9e23cd735a3f2687
SHA512

4ab7aa98bfe8a7a99d31c73c4e4ee723b5372bd126e7f4920498dcb9e6f2a5f63a228a49c8064fde4835256c72af5b698d2b2ed0f78f82b93ccf849e45c02dda
SSDEEP

3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1+S:Xo/BHng5HaVG4G/1z+QVMbg1+S

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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.exe
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.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_12cd6efc662011af5bc84ab5ae8e0117.exe
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_12cd6efc662011af5bc84ab5ae8e0117.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_12cd6efc662011af5bc84ab5ae8e0117.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
2536	JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2536	JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2536	JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.exe
2536	JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_12cd6efc662011af5bc84ab5ae8e0117.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:2536

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
ce39b888142cba739df2251ac67a98e6

SHA1
a7fe951ef6ad01ad0ee3693e895dca160dfbece2

SHA256
db4c63e32ff5496f976900c5bc48b40432576f8f548d8db4c5dbf37fc3af9334

SHA512
aee6338188d90f7856164fc05f19876ad8fcf94873c67880a6bcebec2f0482c9f53692815b927d127c9455c24b1c086348c97c9539893b1c35b01315915351a2

Download Submit
memory/2536-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2536-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2536-74-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2536-288-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads