vobfus | 77a5db8d7ca4b461425b56d503d40dd3145e4248f98eef964bdab4aabc8b66d9

General

Target

23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe
Size

204KB
MD5

e99aba1cb656f2a49c17d01659ec11eb
SHA1

779059207f880ac82e029f3c90d6bec76cab91bf
SHA256

23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe
SHA512

ccf74a1b4d9e4f60de3c160b3cfb73e03699d3d9bd791928fba6085c94542fe7b77522ccf6d0ef28630cedd674c3fc2094f768c0c014e704b756f09b1f0174ad
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"	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.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"	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.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	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	4	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1348	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1348	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1348	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe
1348	23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe

C:\Users\Admin\AppData\Local\Temp\23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.exe
"C:\Users\Admin\AppData\Local\Temp\23c6020a062d6b12c2a07dbb8dac544bbdc5df6155edb88570cdc259e60b18fe.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:1348

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
a3486b6e362e6db0f9c412b225505289

SHA1
88fa5ed1650c401c3d4973ef6c09a89812d23a93

SHA256
66cb8e4163fb2bc69230000619370179bc0a77df1e252eadbfaaa1f663e813e0

SHA512
c12585ac1bbbcf97a6dce61095f7b8423d6037d0a327734dd03fd0bd03f25c6dc92e44bb9116de88c8eac26a1d7e3d3c48c1f74db994a7af1f3a94f54f804f8e

Download Submit
memory/1348-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1348-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1348-81-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1348-217-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads