Analysis

  • max time kernel
    254s
  • max time network
    291s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    07-07-2021 16:08

General

  • Target

    3d554fe3ed824df5bb625bcff4ddde834866164088358ddabc4e5aec8a6562b0.exe

  • Size

    79KB

  • MD5

    012393fc32a1be21437634a2de7019f1

  • SHA1

    a5c223240be45c0e29a9c119b242ee0dc87968e9

  • SHA256

    3d554fe3ed824df5bb625bcff4ddde834866164088358ddabc4e5aec8a6562b0

  • SHA512

    58e8cb9e1420eddbd8b864021184ca892ead2f9e5e24877cacacac786cedfeb4cdfbcbdb73dc0c444949dfd50a4a1b2f9659f0cf2210099cfd99d36de8a1f801

Score
10/10

Malware Config

Signatures

  • Babuk Locker

    RaaS first seen in 2021 initially called Vasa Locker.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 18 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Interacts with shadow copies 2 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3d554fe3ed824df5bb625bcff4ddde834866164088358ddabc4e5aec8a6562b0.exe
    "C:\Users\Admin\AppData\Local\Temp\3d554fe3ed824df5bb625bcff4ddde834866164088358ddabc4e5aec8a6562b0.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4444
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4932
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:3192
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4036
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:4072
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3156
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\How To Restore Your Files.txt
    1⤵
      PID:400
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\How To Restore Your Files.txt
      1⤵
        PID:1384

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\Desktop\How To Restore Your Files.txt

        MD5

        1cb251ec0d568de6a929b520c4aed8d1

        SHA1

        372ea08cab33e71c02c651dbc83a474d32c676ea

        SHA256

        982d9e3eb996f559e633f4d194def3761d909f5a3b647d1a851fead67c32c9d1

        SHA512

        eaf2c12742cb8c161bcbd84b032b9bb98999a23282542672ca01cc6edd268f7dce9987ad6b2bc79305634f89d90b90102bcd59a57e7135b8e3ceb93c0597117b

      • memory/3192-115-0x0000000000000000-mapping.dmp

      • memory/4036-116-0x0000000000000000-mapping.dmp

      • memory/4072-117-0x0000000000000000-mapping.dmp

      • memory/4932-114-0x0000000000000000-mapping.dmp