vobfus | a85eb45a2a91e41a921d6b81be084c70e9e4f7c44f53b29f03fd1c273f9980bc

Analysis

max time kernel
149s
max time network
144s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 22:08

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General

Target

JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.exe
Size

204KB
MD5

3a06aebe720124b6305d6e8479d5f958
SHA1

aecfacc98438106ee442b8ba644f81f2c730b429
SHA256

a85eb45a2a91e41a921d6b81be084c70e9e4f7c44f53b29f03fd1c273f9980bc
SHA512

73098926936da1f4c8c33ecc97b8060ec2095d4ce7bf392797b8da61b8e611a0bfd3bdadbbbf610caf53ee92b12cb3e2f3874dea39e6a593b2384d0409971466
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_3a06aebe720124b6305d6e8479d5f958.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.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_3a06aebe720124b6305d6e8479d5f958.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.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_3a06aebe720124b6305d6e8479d5f958.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
2492	JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2492	JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2492	JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.exe
2492	JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3a06aebe720124b6305d6e8479d5f958.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:2492

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
f892e548fa5c517d471b47dd348314d4

SHA1
8d7880616011f34dc1756985cc85e79979fbbec5

SHA256
d171e82e967ba501e8171ca0a7d77cd0b550b57802e17650afa158311defe269

SHA512
ebe646444c314f293d722a97ba0d15539d952cd80c0faf8ff1e577c2ad19004c4db0ed9e3ad1124536979e23f3a10673c8928fdffa3f6067530bcf8d8ff7d610

Download Submit
memory/2492-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2492-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2492-74-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2492-288-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads