vobfus | 43e38b757549f15e6a96dd9014b8c4f3d7b82cdffcffb2ca395dcf490c613205

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 12:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe
Size

204KB
MD5

553545fc8860fc233f6e2d7781afc570
SHA1

d7754130fc59800e68cc22b5b6c93bc2a9cf95a8
SHA256

43e38b757549f15e6a96dd9014b8c4f3d7b82cdffcffb2ca395dcf490c613205
SHA512

c9bfc5c199c5a0cfd63900894eb628f942d063de558e90b6e220142bde7fcd8ea9c1cb7c9eb3ec3605758734b09249a3bba062b3ccd4c5ce122f4468ea9d58c0
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_553545fc8860fc233f6e2d7781afc570.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.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_553545fc8860fc233f6e2d7781afc570.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.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_553545fc8860fc233f6e2d7781afc570.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	17	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
3052	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3052	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3052	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe
3052	JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_553545fc8860fc233f6e2d7781afc570.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_553545fc8860fc233f6e2d7781afc570.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:3052

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\AG58FPQON.exe

Filesize
204KB

MD5
23f0f50f26e722e7c83d9e00600a0c11

SHA1
e5139a4f88a2e52a4e8f89aeee2ee7f49fea5810

SHA256
cf3afe1cdefc3a727a738f2a03165c94571e5940913899ee8c1330c63a12a9c4

SHA512
aeb368dd05b32c5330f2e8186ce59c36e23be92ec408cc08b0f33aa6c7542609103486bc03cbf68ceda304401c2bc044ff54d9beef23168e62b59f5f71b9e3fc

Download Submit
memory/3052-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3052-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3052-74-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3052-288-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads