Analysis

  • max time kernel
    186s
  • max time network
    38s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • 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 8 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 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:564
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:108
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1596
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1960
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1984
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:316

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/108-60-0x0000000000000000-mapping.dmp

  • memory/564-59-0x00000000757C1000-0x00000000757C3000-memory.dmp

    Filesize

    8KB

  • memory/1596-61-0x0000000000000000-mapping.dmp

  • memory/1960-62-0x0000000000000000-mapping.dmp

  • memory/1984-63-0x0000000000000000-mapping.dmp