vobfus | 989cc6eb3a90d93d47cbdc78230e80508cd821f22d81ddc67765bdbad1d55713

Analysis

max time kernel
150s
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
31-08-2024 17:30

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General

Target

1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.exe
Size

204KB
MD5

012cb17c3aa46fade44e80c2cb831e7e
SHA1

276e04e8442fd537dcde45ae80ba9c9dfd41957b
SHA256

1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14
SHA512

86529eefb5a3de6e6036c347acfedfffa447903e4a0ec449fcf5ab3210c105320999d1ebbefa81431f43dccf99f020fd8d61026384299b5c2758553c40d30b84
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
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.exe
Key created	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.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"	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.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	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.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	70	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4956	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4956	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4956	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.exe
4956	1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.exe

C:\Users\Admin\AppData\Local\Temp\1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.exe
"C:\Users\Admin\AppData\Local\Temp\1abf342c788256fea89a96426efba2979f5bba081ed706c95facbdbcb5209f14.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:4956

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
3a7946b85a735ef74c1bd7064b018f8a

SHA1
83b5704f8b7eb31bd60e4f520b7f05bf09bc3681

SHA256
a445773a1eb117b5253af3246edfbe0fce24d812c035b212205113f761e86ff3

SHA512
7fce7667d106f67424ad6b0dd4fed9a59672631ac3288acf454721a1b26b76a2809d6acc405f8eeabd279ba4c368dfb13c4ff8ea11320e079f7a7bf3a4972d07

Download Submit
memory/4956-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4956-31-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4956-238-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads