vobfus | d897ccd4e40f1219011698d30d4004b70edd71970689811213c53600563ca3eb

Analysis

max time kernel
149s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03/01/2025, 01:25

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General

Target

JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.exe
Size

224KB
MD5

6962c12d1e5919c30eb4b71b004d17bf
SHA1

a43697ee6741a916b68a7a1712b0378fad78be19
SHA256

d897ccd4e40f1219011698d30d4004b70edd71970689811213c53600563ca3eb
SHA512

6ed5cd486b539dbdad0201f469ef6c362beeb12dbdf506612fd40040bbc3f445625c8294bfe52f07f9eb016af91e5d83e305877504e23f2ac2c4c783bc8f11f1
SSDEEP

3072:vHjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1jm0+J:Po/BHng5HaVG4G/1z+QVMbg1jv+

Score

10^/10

vobfus discovery persistence upx 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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.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_6962c12d1e5919c30eb4b71b004d17bf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4456-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/files/0x000b000000023b8b-7.dat	upx
behavioral2/memory/4456-10-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/4456-74-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/4456-288-0x0000000000400000-0x0000000000437000-memory.dmp	upx

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_6962c12d1e5919c30eb4b71b004d17bf.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	19	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	50	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4456	JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4456	JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4456	JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.exe
4456	JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6962c12d1e5919c30eb4b71b004d17bf.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:4456

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
224KB

MD5
89e299f1c1ee9b7b67171110135a4d75

SHA1
3f011e9937f8d21cce8b21a0f7b75343e6276f2d

SHA256
b0108deed0d47bced804803bcdd87192c6e93547f46ae9df824318c713eb14fb

SHA512
2ecaebad0017a5b8c2a68593e13dbcbf71719d7d0317ded5bb946e5b1c36bcf2c97fa381c14dbb9c14f2094c38f95cfcbbe1f8ad110a21138692b97624610ee4

Download Submit
memory/4456-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4456-10-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4456-74-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4456-288-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads