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Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/03/2024, 21:34

General

  • Target

    2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe

  • Size

    41KB

  • MD5

    a4d415128d4592504fac6884935855d5

  • SHA1

    ff2c5e0781920336baeba7fb5b36e4e7695d4226

  • SHA256

    4879f28d9ea2b14fcb3bf3d0ca2298445c8cc4d20b58d22a3c88848058359c92

  • SHA512

    c2d98c68618507ab05d2195cf8524b34739151a05757627c9a889695caea58c493327d5080ffed70b4b201964ed97d4580063877f27e422cdf7e7c67c2bc98f3

  • SSDEEP

    384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzoiM8Nekdvjl9V50i3NbZM+iA:bAvJCYOOvbRPDEgXrNekd7l94i3p+Ar

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\2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3168
    • C:\Users\Admin\AppData\Local\Temp\demka.exe
      "C:\Users\Admin\AppData\Local\Temp\demka.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:2044

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    dbb41b35a40d7c1e0a0c0d18015fed90

    SHA1

    83c3f154a7c63c806f44dbfc4657f11ed1875bb1

    SHA256

    fab99b53d46a19e72341a45abd788008a9ade3b44e8df5c10be3a94b9280d47d

    SHA512

    2968fa6153fd46242d9c7301b2d020c794ffe0b461719ea458edd3d9abf99153b894a59994e79d44ef35a4122ac9bb44a77abdef4c2c05cea4375ec7fcdd002d

  • memory/2044-20-0x00000000020A0000-0x00000000020A6000-memory.dmp

    Filesize

    24KB

  • memory/3168-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/3168-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/3168-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB