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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/02/2024, 12:42

General

  • Target

    2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe

  • Size

    51KB

  • MD5

    bb90ed0ec4c5175f7f9964dc821c9ea9

  • SHA1

    12ad863191b2865319e738801e4b7b94a0e32276

  • SHA256

    332382ddfa560302e5f7679f3184207275c72da6b2687ece4895839dd2e453a1

  • SHA512

    014bfc39ee832e09aed590439876d4b8455758d2db95458e0da7c40ad658f0c1ac26930409f7e07ed11aea3ca46da24c8e817e881bbd5c99c41de01d1e3f043e

  • SSDEEP

    768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszjg:79mqyNhQMOtEvwDpjBxe8TpXRSM

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3432
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:5084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    52KB

    MD5

    38cb67899898d1a640eb26d68ba18524

    SHA1

    315eecd45027c85fb08bddb9c094b8be762daf89

    SHA256

    67bc8efd515a300c60d21148f90b3faf883a6e8786142303c765f1298637f3f3

    SHA512

    d9e49a8b22597dfc6da0aecacce47bf61148612035c948aab7d3d17d0a9af66137211dd173daf34e70dd00f71a338afc4935c5fa4b12b7d4727083a951f221a8

  • memory/3432-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3432-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3432-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3432-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3432-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/5084-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/5084-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/5084-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB