vobfus | 64a0f384e75b03eebb44e8d407e5f15d5ebf11b1d1b6e902e6d94b0b1700342b

Analysis

max time kernel
150s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30-08-2024 22:46

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General

Target

43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe
Size

200KB
MD5

1de2da7e81fad7cf542b5ac3e295da07
SHA1

2b6ac129f55c7a715bea221a44f484392f5124b1
SHA256

43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0
SHA512

6a12e7ae28ba67bd52d3f8870d1412e526240fb90115f71af8cc3b2b8015bc542b50c23f13570af4ed515a656870ce4d43b4a042edb27575a98cef72b10f2397
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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.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"	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.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	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	29	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	69	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3440	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3440	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3440	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe
3440	43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe

C:\Users\Admin\AppData\Local\Temp\43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.exe
"C:\Users\Admin\AppData\Local\Temp\43ff037737ffba75364ef3f6228296d256f4e607487b16dfa5af4a57212ea5b0.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:3440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
200KB

MD5
17d31b1cd7a9543d5008347c136fe37b

SHA1
e6661cc1795a73bfa09e8833fccc37f73230e4bb

SHA256
bbe0a1b163a8df1fff8a036ef9d69f197cc3a21944cd8eabbe1e716eed332f55

SHA512
79ab180350a28b10922fbfe87df2cbe275cc9608eab0aad0d19b43dba6b99a2f454fd45365173665e25bfce0f8bb0aea264c0a7f2a14f82e6a70753bbd77e772

Download Submit
memory/3440-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3440-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3440-81-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3440-288-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads