Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/02/2024, 01:45

General

  • Target

    2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe

  • Size

    42KB

  • MD5

    b0c03ab1c18adfd1cf71d32f60a36ca0

  • SHA1

    a11a70cffb945fa6be8fdf4619878ea910a37328

  • SHA256

    139707aba0063471568b1f944d3034e18120fc44ddd6dc24fbfdfbfd316c8cdf

  • SHA512

    fcb7fbaa116ac6726789f68d930a9837eee4ec557f81b68a084a4cd10b679f6993d06528f74743514c8ce40e75cc3d6797a717242ffc470d8cb78f0b1269496d

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhbCi44Cg:6j+1NMOtEvwDpjr8dx4E

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3864
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2600

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    00d5fb2592a8351580862f48923d26d6

    SHA1

    9598eeff5aeca72dc0e4530a92d54c9ec4b97b34

    SHA256

    d7db110953f8db26fba72cdd5d884ee5168a5970355989f0d62b41eaccec2e79

    SHA512

    c46f70c29b7a0a50f7fac03d967ec93068c249b4b1d1db98f94eb090c5611fba66796414727cdcce6ee2c812fc2189749a558aaace161eed498d33f2dc9fb39a

  • memory/2600-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2600-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2600-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3864-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3864-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3864-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3864-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/3864-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB