vobfus | 7934fec97cf87b272a132b5540d73a10ddaac7f8fe65ae0f606eabd9cf1d9c6d

Analysis

max time kernel
149s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01-09-2024 13:44

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General

Target

164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe
Size

204KB
MD5

5feb559ece12fa1508873bf531112884
SHA1

a20c4dfead844d5d433b0410e82f794aed2ab223
SHA256

164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157
SHA512

0059cd5eefe852c878042f71e072a94f00f72cf8fc66af81db52b11e956f880060ec63f55c535ec30578528aeeddea762138239bd66bf3bfa221c103e1568b47
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

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	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.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"	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.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	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	29	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	65	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2924	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2924	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2924	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe
2924	164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe

C:\Users\Admin\AppData\Local\Temp\164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.exe
"C:\Users\Admin\AppData\Local\Temp\164f5d77e96208abd1a54db7d76297e5c219109f2502a9f3e1f15d46dfb2b157.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:2924

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
d502cb3caf19e9cc191d0a62628a3114

SHA1
de240cf43b1097a2bc97629b8b63036e7d74c59a

SHA256
b8bd9b4ac882f372f8db0113549d0ee244522b8bb6ffcad7b131a4f3cb82244a

SHA512
8397aca3382767ed1faff73d8abc45b93f6bc7250e66191bfbf875b36c40d5e00555e99a36de1f241f8ef12dce76b8509e0c26c60ac34f21cd40cc62d7732431

Download Submit
memory/2924-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2924-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2924-74-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2924-288-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads