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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/04/2024, 08:26

General

  • Target

    2024-04-11_0d98162ccb08aed50e0d5b71695e44b0_cryptolocker.exe

  • Size

    41KB

  • MD5

    0d98162ccb08aed50e0d5b71695e44b0

  • SHA1

    4d7700ce777081aca6f1fc3479d3dccdf30400ae

  • SHA256

    0aaf43161802467482217f888e3cd14cdbd393ee1fa93e3be0d3888b4ef94b6a

  • SHA512

    65cea1a148b8fcfc8972406793f7bf1bf819c9f91b5e92a1d7a0747d099c00955397bcd98b88c48a9fd3f2dc1cedff4c11eb8f45eada254d2cee0cae32dfab19

  • SSDEEP

    768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRYtsV:bc/y2lkF0+BlE

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\2024-04-11_0d98162ccb08aed50e0d5b71695e44b0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-11_0d98162ccb08aed50e0d5b71695e44b0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3956
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      PID:2704

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    17e5b9b7fc153a88c9df9cd87b5ece27

    SHA1

    a7d6d1a849d39d74fff994d4d530e3cb39fba75b

    SHA256

    faf2348241fe51195668161463fb37c4b3b85266e65ffeb5db40de30dd052937

    SHA512

    292efe9198e0307f42a20f88a4ac11089df98275745baa9caeb53fb75cca35b06533f343d77ca575c33f29e9f625d6b2ac10afa6a55c314eb2cae95fbb11a607

  • memory/2704-20-0x0000000000690000-0x0000000000696000-memory.dmp

    Filesize

    24KB

  • memory/3956-0-0x0000000002350000-0x0000000002356000-memory.dmp

    Filesize

    24KB

  • memory/3956-1-0x0000000002350000-0x0000000002356000-memory.dmp

    Filesize

    24KB

  • memory/3956-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB