Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/06/2024, 10:33

General

  • Target

    2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe

  • Size

    65KB

  • MD5

    7e01817dc3ddb01bff675c1974210154

  • SHA1

    b014211997cf91de72659266077dc5f492875846

  • SHA256

    81b87de5f20ca243f95d8d87597191a84f99843b97d6b7004415bab761fc9979

  • SHA512

    5a1e4d639bd843595b16777172ca0abadf4ccfe98dd0958b6a8624a9882954b07013cd788716f76434eb91e47d69c83f317eea5e7a83e8791d55feebb3ca5096

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiD:BbdDmjr+OtEvwDpjM8e

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\2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:540
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4996

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    65KB

    MD5

    d57f541d8e4fbdc01b70f1af9594c1e9

    SHA1

    8724ac5296ce819aeaf3472c540213c4c52bbc3f

    SHA256

    b1cd45893b63aa5a20fa469d78141cc49eed1b426f81c034d80289ef20a400a2

    SHA512

    c46d5b2c2786414307038fc00ff13da7d12c7f7ee4994d04dd01abf63992c112e06bc25af1dbb17d6fd03a4aae35d266e4090ff00d5c6c8f59d491d84821c9e4

  • memory/540-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/540-1-0x0000000000490000-0x0000000000496000-memory.dmp

    Filesize

    24KB

  • memory/540-2-0x0000000000490000-0x0000000000496000-memory.dmp

    Filesize

    24KB

  • memory/540-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/540-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4996-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4996-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/4996-26-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4996-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB