vobfus | f9e2bd19fe0335e33a9f27f661a9cf1ef979623007eb75b120472f8b9e77848c

Analysis

max time kernel
149s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11/01/2025, 09:56

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General

Target

JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.exe
Size

204KB
MD5

fe031522eaf2bd94e399d452dab8142c
SHA1

f58bf292eee8b41496a0dd66e001db0f317bd002
SHA256

f9e2bd19fe0335e33a9f27f661a9cf1ef979623007eb75b120472f8b9e77848c
SHA512

b250d9853786ee86ce4efc457d9bdad06c38cdc176595d42493731aaec16983fda34deb92f7c07dbe13ffa0b33d362790058cdd225c1c265f95dcf72791206aa
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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.exe
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.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_fe031522eaf2bd94e399d452dab8142c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.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_fe031522eaf2bd94e399d452dab8142c.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
2128	JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2128	JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2128	JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.exe
2128	JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fe031522eaf2bd94e399d452dab8142c.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:2128

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
4e9f9977d7ccf3a6e757896178def116

SHA1
34cc65a0c5b72119260d5b735499100018a369d6

SHA256
b519565c532f5791ca9dfe151117a9e1e0b2ab407f655a89e36325747406cc2e

SHA512
a19267fca6197ea81b7c5618c6d7856006353a8c294fff2de9b14a2689b0c08d05b4f013e2da6c218f9b85137a593bdab5d424240c0def126d6c1f65c6d61a65

Download Submit
memory/2128-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2128-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2128-67-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2128-281-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads