Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    14-12-2021 07:05

General

  • Target

    0634f6c10ac079514d4db0ec04d842c48448538f3f636963d1ef17111bedc72a.dll

  • Size

    522KB

  • MD5

    aaf943c5a95b3dd813c441d3bdca0e5a

  • SHA1

    529a1793f8019042952a379bbd91da51e02aa2b1

  • SHA256

    0634f6c10ac079514d4db0ec04d842c48448538f3f636963d1ef17111bedc72a

  • SHA512

    647ae31e6bbe7e8646c75d8d52a2c6e5f81eb9c815821fda164ba21d6754052f9c49a9048fac4ec976ba9d234599e0b9abdd6f278b422329a5f244bbcf570297

Score
10/10

Malware Config

Extracted

Family

matanbuchus

C2

https://belialq449663.at/f5126584-3f68-4e0c-868a-dcb2455f8146/Y2xpbnRvbjQ1.xml

https://belialw869367.at/f5126584-3f68-4e0c-868a-dcb2455f8146/Y2xpbnRvbjQ1.xml

https://beliale232634.at/b0868b6b-7f2c-4ac6-ba54-ba9b13744d17/clinton45.xml

https://belialr878539.at/b0868b6b-7f2c-4ac6-ba54-ba9b13744d17/clinton45.xml

https://belialp632298.at/b0868b6b-7f2c-4ac6-ba54-ba9b13744d17/clinton45.xml

Signatures

  • Matanbuchus

    A loader sold as MaaS first seen in February 2021.

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\0634f6c10ac079514d4db0ec04d842c48448538f3f636963d1ef17111bedc72a.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1276
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\0634f6c10ac079514d4db0ec04d842c48448538f3f636963d1ef17111bedc72a.dll,#1
      2⤵
        PID:1556

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1556-55-0x00000000756C1000-0x00000000756C3000-memory.dmp

      Filesize

      8KB

    • memory/1556-56-0x00000000001F0000-0x0000000000276000-memory.dmp

      Filesize

      536KB

    • memory/1556-57-0x0000000000130000-0x0000000000131000-memory.dmp

      Filesize

      4KB

    • memory/1556-59-0x0000000000300000-0x000000000031E000-memory.dmp

      Filesize

      120KB

    • memory/1556-58-0x0000000000300000-0x000000000031E000-memory.dmp

      Filesize

      120KB

    • memory/1556-60-0x00000000002A0000-0x00000000002BF000-memory.dmp

      Filesize

      124KB

    • memory/1556-61-0x0000000000300000-0x000000000031E000-memory.dmp

      Filesize

      120KB