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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/04/2024, 04:02

General

  • Target

    2024-04-10_f040f5df86115b058c12d728f6c537b0_cryptolocker.exe

  • Size

    62KB

  • MD5

    f040f5df86115b058c12d728f6c537b0

  • SHA1

    26dea2efd44151f919d29eb1cf56579ad66affac

  • SHA256

    4673a33f82a3dbe019a2e5980ca5c62d0c41db38ba07d67db19c1aaa09a39253

  • SHA512

    a93f32d8e219c2e6f6052febc6b420ca4bb62c9fb9109fe7c25776f40823d32a4e6164579735c916bae8e48d87392f0127dc25cdc82e0bb7852c9c17db312371

  • SSDEEP

    1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHa6:btng54SMLr+/AO/kIhfoKMHdQ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 2 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\2024-04-10_f040f5df86115b058c12d728f6c537b0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-10_f040f5df86115b058c12d728f6c537b0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4676
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:2092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    ab1267686e4a414ed015d9d5f7dd63da

    SHA1

    fd88f5f01827a11312a92c82d801dba37b4ce47a

    SHA256

    821d0997a1af74e401b308f7135dabef9988094fb79aafd8baac1122dc0a75e4

    SHA512

    a1681e9ac3d6d2308ea7a33f0e0f7ad4a2388c3c51c4ca45c509b95e8e7a8f0424a0f332ddb6be4305235089d82c661c0eaf407452786122f1dbf097dc77e156

  • memory/2092-21-0x0000000002010000-0x0000000002016000-memory.dmp

    Filesize

    24KB

  • memory/4676-0-0x0000000002260000-0x0000000002266000-memory.dmp

    Filesize

    24KB

  • memory/4676-1-0x0000000002260000-0x0000000002266000-memory.dmp

    Filesize

    24KB

  • memory/4676-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB