Analysis

  • max time kernel
    151s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-12-2023 02:15

General

  • Target

    4c0c037a083e2b1f6b5fcb9c68263c5a.dll

  • Size

    852KB

  • MD5

    4c0c037a083e2b1f6b5fcb9c68263c5a

  • SHA1

    5b4abfb3aeaf1c1fa6658f6d8fc3b14c17bc931d

  • SHA256

    7c710407ba8ed2c0d2f970a81715d7982ddd44ad0838bfefdca8119350325bc4

  • SHA512

    6d1237fdc0187e7f2385a02e44d0e8ec4124b1bd1a340bf8c089bc79db8b212ad2b7831cd187ac15060a4aaed4e3587688cce508a11aeecc9b903ca94b838b3e

  • SSDEEP

    12288:4kbQEkWqv+157EYfxarhwLNuR7ek1tHffB/HzTyNQ6NIeGYr/R:4kbHkWfzZ5adwLNGeStHntqN7v

Malware Config

Signatures

  • Dridex

    Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.

  • Dridex Shellcode 1 IoCs

    Detects Dridex Payload shellcode injected in Explorer process.

  • Dridex payload 10 IoCs

    Detects Dridex x64 core DLL in memory.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c0c037a083e2b1f6b5fcb9c68263c5a.dll,#1
    1⤵
    • Checks whether UAC is enabled
    • Suspicious behavior: EnumeratesProcesses
    PID:4412
  • C:\Windows\system32\EhStorAuthn.exe
    C:\Windows\system32\EhStorAuthn.exe
    1⤵
      PID:5060
    • C:\Users\Admin\AppData\Local\1PI\EhStorAuthn.exe
      C:\Users\Admin\AppData\Local\1PI\EhStorAuthn.exe
      1⤵
        PID:3764
      • C:\Windows\system32\usocoreworker.exe
        C:\Windows\system32\usocoreworker.exe
        1⤵
          PID:4400
        • C:\Users\Admin\AppData\Local\ES0Ap6L\usocoreworker.exe
          C:\Users\Admin\AppData\Local\ES0Ap6L\usocoreworker.exe
          1⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks whether UAC is enabled
          PID:4468
        • C:\Windows\system32\MDMAppInstaller.exe
          C:\Windows\system32\MDMAppInstaller.exe
          1⤵
            PID:5080
          • C:\Users\Admin\AppData\Local\lBF5IK\MDMAppInstaller.exe
            C:\Users\Admin\AppData\Local\lBF5IK\MDMAppInstaller.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Checks whether UAC is enabled
            PID:4904
          • C:\Windows\system32\BackgroundTransferHost.exe
            "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            PID:3764

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/3260-12-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-3-0x0000000002860000-0x0000000002861000-memory.dmp

            Filesize

            4KB

          • memory/3260-5-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-11-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-17-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-20-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-14-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-18-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-27-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-29-0x00007FF9A2AB0000-0x00007FF9A2AC0000-memory.dmp

            Filesize

            64KB

          • memory/3260-38-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-28-0x00007FF9A2AC0000-0x00007FF9A2AD0000-memory.dmp

            Filesize

            64KB

          • memory/3260-16-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-15-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-13-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-6-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-19-0x0000000002330000-0x0000000002337000-memory.dmp

            Filesize

            28KB

          • memory/3260-10-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-9-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-8-0x0000000140000000-0x00000001400D5000-memory.dmp

            Filesize

            852KB

          • memory/3260-7-0x00007FF9A219A000-0x00007FF9A219B000-memory.dmp

            Filesize

            4KB

          • memory/3764-48-0x000001ECA6F40000-0x000001ECA6F47000-memory.dmp

            Filesize

            28KB

          • memory/3764-53-0x00007FF984370000-0x00007FF984446000-memory.dmp

            Filesize

            856KB

          • memory/3764-49-0x00007FF984370000-0x00007FF984446000-memory.dmp

            Filesize

            856KB

          • memory/4412-1-0x00000264656B0000-0x00000264656B7000-memory.dmp

            Filesize

            28KB

          • memory/4412-41-0x00007FF993A00000-0x00007FF993AD5000-memory.dmp

            Filesize

            852KB

          • memory/4412-0-0x00007FF993A00000-0x00007FF993AD5000-memory.dmp

            Filesize

            852KB

          • memory/4468-64-0x000002305A6D0000-0x000002305A6D7000-memory.dmp

            Filesize

            28KB

          • memory/4468-65-0x00007FF983720000-0x00007FF9837F6000-memory.dmp

            Filesize

            856KB

          • memory/4468-69-0x00007FF983720000-0x00007FF9837F6000-memory.dmp

            Filesize

            856KB

          • memory/4904-85-0x00007FF984370000-0x00007FF984446000-memory.dmp

            Filesize

            856KB

          • memory/4904-80-0x0000024000710000-0x0000024000717000-memory.dmp

            Filesize

            28KB