vobfus | 55b81333ce5bdb1c3f57663be945cdb918a7052774d30c6a65b96b5082c43ede

General

Target

402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.exe
Size

204KB
MD5

6c3c5dd37301cefb88af00b46cb67587
SHA1

87f871215a1a786ce9ce477620fbbdaf8c86d5b7
SHA256

402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302
SHA512

98cfd9402657bd4184acba374d1a82de3b290bb6cdb55eb1017505f10e38925c4360ba6acc4a2ca4ff0ad83904ed89d56cac844b8bd9621a0080b096dacd1ff0
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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.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"	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.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	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.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
2604	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2604	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2604	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.exe
2604	402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.exe

C:\Users\Admin\AppData\Local\Temp\402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.exe
"C:\Users\Admin\AppData\Local\Temp\402b7f6127a11b824e618e6bc2adb6005a46081fe9252020cacabdb32c4a6302.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:2604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

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
fbc28c2fb220a65afa723779059e5221

SHA1
863dcff7440dd5257f7758655d11e6bc1008e717

SHA256
e1031f0cde18954947640ae0ce7cf9ce93ca9557ab6dcc9ce7214d1ec752832a

SHA512
f944b705b1d145590e413f9caa05ef3fd2403b00f2ea73fc07f52f507d66a8cc2acc3b64c5ae10c85337146b52b810ac4d3021223472fc4b9a97f4c74ae15d2b

Download Submit
memory/2604-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2604-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2604-81-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2604-224-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads