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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/10/2024, 04:47

General

  • Target

    2024-10-18_f437a9a376941fea4d1dbd2783b59b3e_cryptolocker.exe

  • Size

    31KB

  • MD5

    f437a9a376941fea4d1dbd2783b59b3e

  • SHA1

    ecc3701f25de2522be76dda0401937d6b64fbbe7

  • SHA256

    c2840215b8ca72cd4beb01f7aa223e6814cc0b65fbc16ba11de575709b74b63f

  • SHA512

    52e5013580d3a2fffb275ebeb887ba871a97e071c34d27366cabb1a797937ca24c7f780043a66f54371b6d4696f73d86cb339f14ddb51d9cdb4a4dc8c3662b62

  • SSDEEP

    384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9R9U1gpPQZ:b7o/2n1TCraU6GD1a4Xt9R21TZ

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-18_f437a9a376941fea4d1dbd2783b59b3e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-18_f437a9a376941fea4d1dbd2783b59b3e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4448
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\rewok.exe

    Filesize

    31KB

    MD5

    b37f85ae595511e2f8b1c205145dbc40

    SHA1

    c90db76f7954810b09fdc74cf6fc0530f71ace70

    SHA256

    5a870425cea718c51b1fec78960fe725b5500a11369efcb0ef2fe41c74b60a0e

    SHA512

    53c439586568c3b64a395afdece607502d8a78a23921780416e622f857ceaa96ba906ebf9bdec36cbacac65f103bc7e128ac894951267b4b6147184b7537f3cb

  • memory/1720-25-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/4448-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/4448-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/4448-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB