Analysis

  • max time kernel
    168s
  • max time network
    234s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    10/05/2022, 18:47

General

  • Target

    BGA07HSJYEUW.exe

  • Size

    300.0MB

  • MD5

    417e5e454f625ec291102dcb0edaadfd

  • SHA1

    34c7f664c21dcc78c49b10d668773a8dbe314054

  • SHA256

    99f6adbb8a1e75b3c0d9dc7f9e7b1e48576e0621f234dcae2691fbf7636dd039

  • SHA512

    dd3da693c7f2a3629f382b2bdd9ee23bc5512bdd8ee34bffed14bb5442f755798c787eeb04b5010e059582f913cf591de4e435f717adda7f04db725d1edabb07

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

bitm01071.duckdns.org:5021

Attributes
  • communication_password

    81dc9bdb52d04dc20036dbd8313ed055

  • tor_process

    tor

Signatures

  • BitRAT

    BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

  • suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)

    suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)

  • Executes dropped EXE 1 IoCs
  • UPX packed file 8 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BGA07HSJYEUW.exe
    "C:\Users\Admin\AppData\Local\Temp\BGA07HSJYEUW.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:944
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\rtez.exe'" /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1888
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\rtez.exe'" /f
        3⤵
        • Creates scheduled task(s)
        PID:948
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\BGA07HSJYEUW.exe" "C:\Users\Admin\AppData\Roaming\rtez.exe"
      2⤵
        PID:896
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        2⤵
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1172
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {CDE5789C-4157-47FA-A1D0-67620DCCAF19} S-1-5-21-2277218442-1199762539-2004043321-1000:AUVQQRRF\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1160
      • C:\Users\Admin\AppData\Roaming\rtez.exe
        C:\Users\Admin\AppData\Roaming\rtez.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1960
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\rtez.exe'" /f
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1748
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\rtez.exe'" /f
            4⤵
            • Creates scheduled task(s)
            PID:1012
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C copy "C:\Users\Admin\AppData\Roaming\rtez.exe" "C:\Users\Admin\AppData\Roaming\rtez.exe"
          3⤵
            PID:832
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
            3⤵
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of AdjustPrivilegeToken
            PID:1616

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Roaming\rtez.exe

              Filesize

              300.0MB

              MD5

              417e5e454f625ec291102dcb0edaadfd

              SHA1

              34c7f664c21dcc78c49b10d668773a8dbe314054

              SHA256

              99f6adbb8a1e75b3c0d9dc7f9e7b1e48576e0621f234dcae2691fbf7636dd039

              SHA512

              dd3da693c7f2a3629f382b2bdd9ee23bc5512bdd8ee34bffed14bb5442f755798c787eeb04b5010e059582f913cf591de4e435f717adda7f04db725d1edabb07

            • C:\Users\Admin\AppData\Roaming\rtez.exe

              Filesize

              300.0MB

              MD5

              417e5e454f625ec291102dcb0edaadfd

              SHA1

              34c7f664c21dcc78c49b10d668773a8dbe314054

              SHA256

              99f6adbb8a1e75b3c0d9dc7f9e7b1e48576e0621f234dcae2691fbf7636dd039

              SHA512

              dd3da693c7f2a3629f382b2bdd9ee23bc5512bdd8ee34bffed14bb5442f755798c787eeb04b5010e059582f913cf591de4e435f717adda7f04db725d1edabb07

            • memory/944-54-0x0000000001160000-0x00000000012EC000-memory.dmp

              Filesize

              1.5MB

            • memory/944-55-0x00000000765C1000-0x00000000765C3000-memory.dmp

              Filesize

              8KB

            • memory/1172-66-0x0000000000400000-0x00000000007E4000-memory.dmp

              Filesize

              3.9MB

            • memory/1172-59-0x0000000000400000-0x00000000007E4000-memory.dmp

              Filesize

              3.9MB

            • memory/1172-63-0x0000000000400000-0x00000000007E4000-memory.dmp

              Filesize

              3.9MB

            • memory/1172-65-0x0000000000400000-0x00000000007E4000-memory.dmp

              Filesize

              3.9MB

            • memory/1172-67-0x0000000000400000-0x00000000007E4000-memory.dmp

              Filesize

              3.9MB

            • memory/1172-69-0x0000000000400000-0x00000000007E4000-memory.dmp

              Filesize

              3.9MB

            • memory/1172-62-0x0000000000400000-0x00000000007E4000-memory.dmp

              Filesize

              3.9MB

            • memory/1172-60-0x0000000000400000-0x00000000007E4000-memory.dmp

              Filesize

              3.9MB

            • memory/1616-88-0x0000000000400000-0x00000000007E4000-memory.dmp

              Filesize

              3.9MB

            • memory/1960-73-0x0000000000DE0000-0x0000000000F6C000-memory.dmp

              Filesize

              1.5MB