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
    03-02-2024 03:37

General

  • Target

    2024-02-03_6790a68c24de34392fe62919e92bfbf3_cryptolocker.exe

  • Size

    30KB

  • MD5

    6790a68c24de34392fe62919e92bfbf3

  • SHA1

    96fe87e7fb281c6f4dd089e235faa5e1ce075f7a

  • SHA256

    e252982aca933956cae6ba82b1cd1462bf7de0292eef778c75baeac3833ff824

  • SHA512

    7a4fb7dc8f5a062448f379bdf5b9c2f0bb6b8d764dd86df8df67c5b50be03a80e1b5e7124b09db3647aa57e331c54b40025c77bdd6007d0413be18fbcb4f06ac

  • SSDEEP

    768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+jHR:q0zizzOSxMOtEvwDpj/ar1R

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • UPX dump on OEP (original entry point) 5 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\2024-02-03_6790a68c24de34392fe62919e92bfbf3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-03_6790a68c24de34392fe62919e92bfbf3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4580
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4860

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    30KB

    MD5

    acdc82d8393448e8675fa6cf00388452

    SHA1

    ced6b6b2fdc15d7a5646075a66c6fefc090bb698

    SHA256

    491403e37370a4c52bf8598c2575562961d613b29197f611a762a8f0e72fdb4a

    SHA512

    82235cda2ff9e4e445286d9dd55ece1a15bc6d280e76a11d561a53d41e141ba85786ed98c90f7d2a4ecbeabff8cef20ddb087c968aa881af1eb539b1dc0cffc0

  • memory/4580-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4580-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4580-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4580-3-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/4580-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4860-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4860-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4860-24-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4860-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB