Analysis

  • max time kernel
    8s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 14:44

General

  • Target

    bf18fdac218b1c74d291145834f7060a96ac8af15f5c693d80aa04c2824193c9.dll

  • Size

    789KB

  • MD5

    4c6d461e3d54cb8c31a7583ff4d891ea

  • SHA1

    febafa00a2ca1cfd96705c3341dc10dde880dee9

  • SHA256

    bf18fdac218b1c74d291145834f7060a96ac8af15f5c693d80aa04c2824193c9

  • SHA512

    506363f19e380db162fcd7e68c267b7606b474e3c4407dc10ceff26295f022813cd080413bc6a7ec47f957e70134156a453ab6b69696ef3c80155f11ff5fb841

  • SSDEEP

    12288:Gl5wn1tqJdEJcFxTzmevkYKViWQRoITdOCsljq:GTwn1tbGFxTzmevkYK5QG

Score
10/10

Malware Config

Extracted

Family

buer

C2

mirrorsoffecalbank.com

Signatures

  • Buer

    Buer is a new modular loader first seen in August 2019.

  • Buer Loader 1 IoCs

    Detects Buer loader in memory or disk.

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\bf18fdac218b1c74d291145834f7060a96ac8af15f5c693d80aa04c2824193c9.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:848
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\bf18fdac218b1c74d291145834f7060a96ac8af15f5c693d80aa04c2824193c9.dll
      2⤵
        PID:1380

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/848-54-0x000007FEFC291000-0x000007FEFC293000-memory.dmp

      Filesize

      8KB

    • memory/1380-56-0x0000000075ED1000-0x0000000075ED3000-memory.dmp

      Filesize

      8KB

    • memory/1380-57-0x0000000000C00000-0x0000000000ECA000-memory.dmp

      Filesize

      2.8MB

    • memory/1380-58-0x0000000000C00000-0x0000000000ECA000-memory.dmp

      Filesize

      2.8MB