vobfus | 1b13ada0688763cf98b4777470ed464821a3b8dd7f58e904dbf283595f28d155

General

Target

8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.exe
Size

224KB
MD5

2563ade594e1a7ea13fd786c6c3c8824
SHA1

4d5844b14c486ecfa819d3edb270782bbea72432
SHA256

8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a
SHA512

75056dbbdf851700a2efa2cfff2f5d5182e5e96627af54432aaa5b78e193e249c6b33e798bd175a54748b6b6c0b7679c8033164a7b16f3ef935e2fb5f594c239
SSDEEP

3072:vHjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1jm0+J:Po/BHng5HaVG4G/1z+QVMbg1jv+

Score

10^/10

vobfus discovery persistence upx 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	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.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"	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2328-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/files/0x00080000000234bc-7.dat	upx
behavioral2/memory/2328-25-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/2328-17-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/2328-232-0x0000000000400000-0x0000000000437000-memory.dmp	upx

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"	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.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"	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.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	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	22	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	66	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2328	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2328	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2328	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.exe
2328	8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.exe

C:\Users\Admin\AppData\Local\Temp\8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.exe
"C:\Users\Admin\AppData\Local\Temp\8ebbd2760508e5e72b2933510cf415438adc44d2ffc86e7ca3731921e3e52e0a.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:2328

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\AG58FPQON.exe

Filesize
224KB

MD5
6a3632cf9c9b1f9a520e09a9b5891e7f

SHA1
7f235620bc46d9e71bae4dc744598158d6bd064a

SHA256
fcbdd2f265dcb2bdc869953047e76e84f3647872ef1ee08e2aeb6f35709bf2a8

SHA512
8d2fce8774f619926fe0e8946beed48dbb61fb0b4498480e589b503d57af7f6e4df1e8a6a4cd5a4ad1f2bae08168c63e4d8d6c400a363884dc6334d205f07cc2

Download Submit
memory/2328-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2328-25-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2328-17-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2328-232-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads