Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    21-12-2021 21:56

General

  • Target

    01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe

  • Size

    2.7MB

  • MD5

    42efa39082d113d675bc63909a07d619

  • SHA1

    71dd8678250e4bab3da90d3b0f51b5b444322a9e

  • SHA256

    01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426

  • SHA512

    965c70807905687a9bc801a52f9c8d986fa6bdf9ddf6505609423eece9df63235fc0332b7f68e392f19e030f1e2688a64b26443c4295163f0e51ce4aa7317321

Malware Config

Extracted

Family

bitrat

Version

1.35

C2

publiquilla.linkpc.net:9092

Attributes
  • communication_password

    bfdba24ee3d61f0260c4dc1034c3ee43

  • install_dir

    System32dllwin

  • install_file

    Systemwin32077273dll.exe

  • tor_process

    tor

Signatures

  • BitRAT

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

  • UPX packed file 3 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: RenamesItself 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe
    "C:\Users\Admin\AppData\Local\Temp\01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2544
    • C:\Users\Admin\AppData\Local\Temp\01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe
      "C:\Users\Admin\AppData\Local\Temp\01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe"
      2⤵
        PID:2864
      • C:\Users\Admin\AppData\Local\Temp\01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe
        "C:\Users\Admin\AppData\Local\Temp\01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe"
        2⤵
          PID:2872
        • C:\Users\Admin\AppData\Local\Temp\01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe
          "C:\Users\Admin\AppData\Local\Temp\01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe"
          2⤵
            PID:3104
          • C:\Users\Admin\AppData\Local\Temp\01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe
            "C:\Users\Admin\AppData\Local\Temp\01033e294faecb37e41c01525574ff033890eccc799175858049556e27e4b426.exe"
            2⤵
            • Adds Run key to start application
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious behavior: RenamesItself
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:2656

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2544-115-0x0000000000700000-0x0000000000701000-memory.dmp

          Filesize

          4KB

        • memory/2544-117-0x0000000005230000-0x0000000005231000-memory.dmp

          Filesize

          4KB

        • memory/2544-118-0x0000000005870000-0x0000000005871000-memory.dmp

          Filesize

          4KB

        • memory/2544-119-0x0000000005370000-0x0000000005371000-memory.dmp

          Filesize

          4KB

        • memory/2544-120-0x0000000005370000-0x000000000586E000-memory.dmp

          Filesize

          5.0MB

        • memory/2544-121-0x00000000051D0000-0x00000000051D1000-memory.dmp

          Filesize

          4KB

        • memory/2544-122-0x00000000054F0000-0x00000000054F1000-memory.dmp

          Filesize

          4KB

        • memory/2544-123-0x0000000005210000-0x0000000005224000-memory.dmp

          Filesize

          80KB

        • memory/2544-124-0x0000000006330000-0x000000000650C000-memory.dmp

          Filesize

          1.9MB

        • memory/2544-125-0x00000000098D0000-0x0000000009A5D000-memory.dmp

          Filesize

          1.6MB

        • memory/2656-126-0x0000000000400000-0x00000000007E4000-memory.dmp

          Filesize

          3.9MB

        • memory/2656-127-0x00000000007E23B0-mapping.dmp

        • memory/2656-128-0x0000000000400000-0x00000000007E4000-memory.dmp

          Filesize

          3.9MB

        • memory/2656-129-0x0000000000400000-0x00000000007E4000-memory.dmp

          Filesize

          3.9MB