vobfus | 23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe

Analysis

max time kernel
149s
max time network
140s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10/01/2025, 17:11

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General

Target

JaffaCakes118_e99aba1cb656f2a49c17d01659ec11eb.exe
Size

204KB
MD5

e99aba1cb656f2a49c17d01659ec11eb
SHA1

779059207f880ac82e029f3c90d6bec76cab91bf
SHA256

23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe
SHA512

ccf74a1b4d9e4f60de3c160b3cfb73e03699d3d9bd791928fba6085c94542fe7b77522ccf6d0ef28630cedd674c3fc2094f768c0c014e704b756f09b1f0174ad
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_e99aba1cb656f2a49c17d01659ec11eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_e99aba1cb656f2a49c17d01659ec11eb.exe
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_e99aba1cb656f2a49c17d01659ec11eb.exe
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_e99aba1cb656f2a49c17d01659ec11eb.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_e99aba1cb656f2a49c17d01659ec11eb.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_e99aba1cb656f2a49c17d01659ec11eb.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_e99aba1cb656f2a49c17d01659ec11eb.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
2292	JaffaCakes118_e99aba1cb656f2a49c17d01659ec11eb.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2292	JaffaCakes118_e99aba1cb656f2a49c17d01659ec11eb.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2292	JaffaCakes118_e99aba1cb656f2a49c17d01659ec11eb.exe
2292	JaffaCakes118_e99aba1cb656f2a49c17d01659ec11eb.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e99aba1cb656f2a49c17d01659ec11eb.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e99aba1cb656f2a49c17d01659ec11eb.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:2292

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
16821093716b4632ad86a09c2bf3464b

SHA1
6e76ac9e7add25fff4b40181c051c0c112953eb9

SHA256
8fc928516a2459ebbc4a747ff18cbabde3787701c94ecf24d11868b128ec982f

SHA512
dd47d4d9b219d054e7e5fd0869e14c8dbb0a2cc3dc761e9086ab05da2a1eb60f841fc036d8ec38ec0adf48e95b162191d25ad8988dd8d018912f2b75614fa8f6

Download Submit
memory/2292-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2292-31-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2292-238-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads