Analysis

  • max time kernel
    148s
  • max time network
    149s
  • 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 14:14

General

  • Target

    2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe

  • Size

    69KB

  • MD5

    fd77395e94e60088a0cadf3f3595e577

  • SHA1

    fae1846ade41da904ae08a8b3a6266b07f9d793c

  • SHA256

    907b59bfe159b973dacad93b8319c9f8f024601a7a8e68f2902cbce5f8cf43ca

  • SHA512

    e7bb0ac70daedeed6059640bbf6196bf51d0f52f86681c31af6d82b2dda96a032ea3ca1005231b990bbc5221d634cd419e3909a7d598997e2f077694c828a084

  • SSDEEP

    1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUYIU:DW60sllyWOtEvwDpjwF85W

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\2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3180
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4744

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    69KB

    MD5

    3b50a8cc89be9d0cea379d77bc88394d

    SHA1

    083a0821330ce6598aa50e5266ddd6240e6c734e

    SHA256

    114d456d9c2e8c3864c26a68762ff420e41e84479cbdd7e940c81f665be07a06

    SHA512

    2511f4d64c5a6127a68d6b83f7e3e1686bdecfbff4d12fdfaaffee30c98b2e448d3748c82ff7cc803d38be9ab5b616e83ff1a8ef2013ecdb57ed7bcbd009c9b2

  • memory/3180-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/3180-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3180-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3180-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3180-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4744-18-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4744-22-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/4744-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB