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Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/04/2024, 09:23

General

  • Target

    2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe

  • Size

    60KB

  • MD5

    5cf62fe707503ca3d2548ccd180f7aa0

  • SHA1

    aa4830a974886aa6242f129f8c2b8cbfb7229a77

  • SHA256

    83d174b8e61792ebf45f7b530f86c7e0b04da27c03dcfd44352624d2d461bd71

  • SHA512

    a6e5d2e1f5892fc3da5668af8e3b111d00581676691ee67657f204a484875441be9b0096b7e4a44d274d598993bb8c009d67ba6920c8a34675016b962720c5b2

  • SSDEEP

    1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZp:btng54SMLr+/AO/kIhfoKMHdap

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\2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4316
    • 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:908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    acf515a97aacd64a271508c1a93af02f

    SHA1

    d836f739dba290c2fc8d4c8bcbfda4a4a37bb51d

    SHA256

    03c30dd83ac37c01a093501289c51d3f521addceaaaf6a677d1f8d911a5cdb6b

    SHA512

    09a3cb3f52159a1728391165b5d508c0d747e7b3c438b364225a10d9299ed2115f691c2eee8516eadeca8cb801060c43c776d189d75fa8b3aa09ebe335217aef

  • memory/908-21-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/4316-0-0x0000000000640000-0x0000000000646000-memory.dmp

    Filesize

    24KB

  • memory/4316-1-0x0000000000640000-0x0000000000646000-memory.dmp

    Filesize

    24KB

  • memory/4316-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB