vobfus | 77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb

General

Target

77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe
Size

572KB
MD5

c7614f7e3de3aabe56408edebbd430ca
SHA1

a5c9d888e8f340875ad3fcf9d8110594ae513a08
SHA256

77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb
SHA512

5d2db1d5a031eac1ee73bf2369ccc2ec4ff9e62571d8a4a21355ea56864e4f51aa667f84c1f762db6ec1c61bd52bb85d0c9124d8bfb11dfa9394957357eaa644

Score

10^/10

vobfus 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

T1060

Modify Registry

T1112

Processes:

77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run	77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe

Script User-Agent 2 IoCs

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

Processes:

description	flow	ioc
HTTP User-Agent header	5	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	7	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe

pid process

1688 77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe

pid process

1688 77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe

pid	process
1688	77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe
1688	77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe

C:\Users\Admin\AppData\Local\Temp\77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe
"C:\Users\Admin\AppData\Local\Temp\77a8e3ca82f1ec529565ccb940f459931b32ddec2c92b9c1115416f3937f49cb.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
PID:1688

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1688-59-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads