Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-02-2024 14:48

General

  • Target

    2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe

  • Size

    60KB

  • MD5

    9943330e8a089b103bcaf24a1271a172

  • SHA1

    6022ff0cb803dc5fb169b07c3d906c97febcde99

  • SHA256

    437d9ca31a28c5dfa58a5670810994acaf88902fe64a64b6db8687330994217b

  • SHA512

    ec73d859eef607e730913861928d61bf6b52df0200c5aed6d80c72ccd94b57bd3dd47c5b755c7584b224b7b2c9092ff21a3fe82ae2b5c4a34038ce333e87cf30

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsv:BbdDmjr+OtEvwDpjM8H

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 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\2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2292
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3096

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    0fe255c4feef0cf2cd7e642c85cb56bf

    SHA1

    d7d6ae9238b4a0122fbdd285b2edef9ca0a51fba

    SHA256

    a88681a90513fbc722d41e7dde15531b6375bb0275aaa565f2db8234cf276991

    SHA512

    7ec9e339e73a5c65488bc0790efbf1dcc2598fb7976119d447c50066cb74fdf5be3099b60a42e099d173c1b85d64287e1e764899f5ebf66aab494b0c1fb3a97f

  • memory/2292-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2292-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2292-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2292-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2292-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3096-19-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/3096-23-0x0000000000740000-0x0000000000746000-memory.dmp

    Filesize

    24KB

  • memory/3096-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB