vobfus | 97dc784986e8cfb8bf72598ba693ca0088b1d12f8ec8215acad433e4a08f9a2a

General

Target

00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe
Size

224KB
MD5

b49e5cee6853409f78202e39674b5b2b
SHA1

46a5d8212427fca9cfad1dd00cd38a44fe1e30f9
SHA256

00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b
SHA512

5db759ec344a2568b0a7fa4bfcb5b758f8da1a73027fe28510a3c85facdff7c3975e4e44ffe948cdd3df72021f160842f347c3aeb93240d5c54faa7778136fcd
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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2416-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x00080000000120ff-7.dat	upx
behavioral1/memory/2416-11-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2416-68-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2416-282-0x0000000000400000-0x0000000000437000-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"	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.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	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.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
2416	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2416	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2416	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe
2416	00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe

C:\Users\Admin\AppData\Local\Temp\00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.exe
"C:\Users\Admin\AppData\Local\Temp\00cef7f4d996791b82a9d1885afebd185e92174ab115a292167c6d55fd80e19b.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:2416

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
224KB

MD5
efe8570955187751875d7d1604d40622

SHA1
85e98c96d050a3791adba6215ce99935d91541ea

SHA256
cf3f5cced524f37fd341c55cf360d0fee1e0679dc8fe8d2dd9739c9fd3b071f4

SHA512
2bd6bac13cb3b2bc32bc129015e2cdc2c9f3ed60f978b0a59c74bb01de863179ce8b6a085c9684815b7cc661d29f6cc011be13bf45f4cae7ca2750c21a8166d4

Download Submit
memory/2416-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2416-11-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2416-68-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2416-282-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads