Analysis

  • max time kernel
    118s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    14-12-2021 07:05

General

  • Target

    3935906e0dd97de6a439dcacab2676d1790c179135bb4e2cb781c95a4ecb0742.dll

  • Size

    522KB

  • MD5

    32dcc8ff4729cebbe0b103b77ea9a0b2

  • SHA1

    19ff87a1a773aa282997e2df0820933f6108fbaf

  • SHA256

    3935906e0dd97de6a439dcacab2676d1790c179135bb4e2cb781c95a4ecb0742

  • SHA512

    f99b5ffe0d9f9a3d6a2b61e4c5f14b4f71cc23e4887a7357b124c108ddc3327bcd65b393b1472f4a794ad06eff10babae7369c2010ee1056011d433bc52fba7f

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\3935906e0dd97de6a439dcacab2676d1790c179135bb4e2cb781c95a4ecb0742.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:956
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\3935906e0dd97de6a439dcacab2676d1790c179135bb4e2cb781c95a4ecb0742.dll,#1
      2⤵
        PID:1568

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1568-55-0x0000000075D11000-0x0000000075D13000-memory.dmp

      Filesize

      8KB

    • memory/1568-56-0x00000000001B0000-0x0000000000236000-memory.dmp

      Filesize

      536KB

    • memory/1568-57-0x0000000000240000-0x0000000000241000-memory.dmp

      Filesize

      4KB

    • memory/1568-59-0x0000000000900000-0x000000000091E000-memory.dmp

      Filesize

      120KB

    • memory/1568-58-0x0000000000900000-0x000000000091E000-memory.dmp

      Filesize

      120KB

    • memory/1568-61-0x0000000000900000-0x000000000091E000-memory.dmp

      Filesize

      120KB

    • memory/1568-60-0x00000000008B0000-0x00000000008CF000-memory.dmp

      Filesize

      124KB