vobfus | e4c83122e5feea8a7b23ff03888b71aaa449d4ee8565ab75aa7625f415056403

General

Target
VirusShare_58695175d4455ce99ab1029c255b7d08.exe
Size 212KB
Sample251103-ppntjsfp91
SHA256 473a70eca76ea775144352e5c044dcdad6c03c77987196004d29df024eeb9d3d
MD5 58695175d4455ce99ab1029c255b7d08
SHA1 5cb9db9a19178529b86abfeafc59b5125521d8a7
SHA512 93604cfba77756dd88835640fdf707400e11991ec1c87d628e7a3503f5d50d61cfa4b23d90986b63bc57c7e1012fc4fe122ae7768f7f9d6f96a9d45cebe1b86b
SSDEEP 3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1:Xo/BHng5HaVG4G/1z+QVMbg1
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery vobfus 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 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1919182765-2457925700-1517026611-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	AG58FPQON.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	VirusShare_58695175d4455ce99ab1029c255b7d08.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	VirusShare_58695175d4455ce99ab1029c255b7d08.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	AG58FPQON.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1919182765-2457925700-1517026611-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	AG58FPQON.exe
Key created	\REGISTRY\USER\S-1-5-21-1919182765-2457925700-1517026611-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	VirusShare_58695175d4455ce99ab1029c255b7d08.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1919182765-2457925700-1517026611-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	VirusShare_58695175d4455ce99ab1029c255b7d08.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	AG58FPQON.exe

Executes dropped EXE 1 IoCs

pid	Process
2896	AG58FPQON.exe

Adds 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\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	VirusShare_58695175d4455ce99ab1029c255b7d08.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1919182765-2457925700-1517026611-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	VirusShare_58695175d4455ce99ab1029c255b7d08.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	AG58FPQON.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1919182765-2457925700-1517026611-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	AG58FPQON.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	VirusShare_58695175d4455ce99ab1029c255b7d08.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AG58FPQON.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	14	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	51	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2896	AG58FPQON.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4224	VirusShare_58695175d4455ce99ab1029c255b7d08.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4224	VirusShare_58695175d4455ce99ab1029c255b7d08.exe
2896	AG58FPQON.exe
2896	AG58FPQON.exe

C:\Users\Admin\AppData\Local\Temp\VirusShare_58695175d4455ce99ab1029c255b7d08.exe
"C:\Users\Admin\AppData\Local\Temp\VirusShare_58695175d4455ce99ab1029c255b7d08.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
PID:4224

C:\Users\Admin\AppData\Roaming\AG58FPQON.exe
C:\Users\Admin\AppData\Roaming\AG58FPQON.exe
1⤵
- Adds policy Run key to start application
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2896

Network

MITRE ATT&CK Enterprise v16

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

AG58FPQON.exe

Path C:\Users\Admin\AppData\Roaming\AG58FPQON.exe
Size 212KB
SHA256 c481a2e787ac3dee40242bfe4a868ff548e213aea1d021b864bbbd54aa315f15
MD5 eca2d17ace4dc4be1a871865c624f9e1
SHA1 e45e70c97f67ece83244854a345e541bf55fe4d4
SHA512 c9c0988b7edd1db3b4e38141de1a236726439b1e713e0ad3cd463b824d968c054366b1c7953858bb82e40026e39215656f1823ea86d5e76f212f08a5091970d0
SSDEEP 3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg13:Xo/BHng5HaVG4G/1z+QVMbg13
MD5 SHA1 SHA512 SSDEEP

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memory/4224-0-0x0000000000400000-0x0000000000434000-memory.dmp

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memory/4224-15-0x0000000000400000-0x0000000000434000-memory.dmp

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memory/4224-16-0x0000000000400000-0x0000000000434000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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