Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/02/2024, 01:26

General

  • Target

    2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe

  • Size

    30KB

  • MD5

    1f70d10feb59a8aa2412c852bdc3deea

  • SHA1

    e63d0494f6b086aac1623af56794e7b8daa1098f

  • SHA256

    145633926f053d37dc5d7d555d444d310e10cbf298f589457a2bcca5eb196860

  • SHA512

    b54cd3b4fce2b88fddc5a40bfe0d06ef123479588b84593db0a73e1380097ca77df545f425daf9c03af0d27ad9e8e2a9756b96ab2af8dc3bd1977f0cf6e8d1c9

  • SSDEEP

    384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9RXmo:b7o/2n1TCraU6GD1a4Xt9Rt

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:752
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      PID:4060

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    31KB

    MD5

    dad86d97a4aeb071d22236697db36c05

    SHA1

    4f618dc4b8a609918d2f7bb320d94ae49aa6183f

    SHA256

    00c02b2f8cb57678c511a7266514db0b42a85e84df47d1634b1ac7f6120b2bea

    SHA512

    03dde01a72f640d1f31557c6600e18c3be0bda35f1b5cfcc2b4d0a334d401009f643954e58d3ac30b73bdd934091ca967a2b42fdfd948d4fb957d480d1008a00

  • memory/752-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/752-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/752-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB