vobfus | a9cb6ccded0f0a33d703483d443c277826bc154e2f1132233814bc19272fed7d

Analysis

max time kernel
150s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10/01/2025, 20:19

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General

Target

JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.exe
Size

7.9MB
MD5

ed428a039b020f0a82e06f8fe9b86f9e
SHA1

513d00c4d4b3f0477e17bf0c3d2371144af39dff
SHA256

a9cb6ccded0f0a33d703483d443c277826bc154e2f1132233814bc19272fed7d
SHA512

aa92b3002977351e2030a2e974ffaac6542e97cb30552faa56e6437c86070537ce817928691055717e5b5142f16901808fbc738e1f8efcc85bd1c4d439d9c171
SSDEEP

98304:Vbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbis:V

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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.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_ed428a039b020f0a82e06f8fe9b86f9e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1136-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/files/0x000c000000023ba8-7.dat	upx
behavioral2/memory/1136-17-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/1136-18-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/1136-232-0x0000000000400000-0x0000000000437000-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_ed428a039b020f0a82e06f8fe9b86f9e.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	16	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	45	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1136	JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1136	JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1136	JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.exe
1136	JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ed428a039b020f0a82e06f8fe9b86f9e.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:1136

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
7.9MB

MD5
b314a6e87cf2725444fe56bb1a317a67

SHA1
5d45c183fd11d90bbeb0f877b26db0d03a7d289a

SHA256
eee0ee0a8060d702a441fb2814f2b11531e42d67c11db09e84d17602f0b9ebe7

SHA512
9d133abeb7d4689d096a1ec6ac27703c0ba31b3620693efe754f4ebc5e4a2d0daabaf6d27a9c556d2264a8e2e34a08f9bbc69ed0f24d3e50349cfd689443616d

Download Submit
memory/1136-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1136-17-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1136-18-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1136-232-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads