Analysis

  • max time kernel
    140s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-02-2024 14:38

General

  • Target

    2024-02-13_74602684c5b6b9d96ea2638417a47e07_cryptolocker.exe

  • Size

    99KB

  • MD5

    74602684c5b6b9d96ea2638417a47e07

  • SHA1

    426733dd6ccfeaea192ef0cbfd7275b3884ab496

  • SHA256

    fa7077ab84e9287d621ed94798961eee1718b31c84ba8624b80ea836f084d071

  • SHA512

    4a37acb7188071631c99d112fcc8913244273c4465c3af4ffa80f4fae6b04cffaafc90f3eec31187bcd1c9bf013e4b4837089390e01ab0d812d3ac91f43e9be3

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNVOO:i5nkFGMOtEvwDpjNbwQEIikgNAO

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 IoCs
  • Checks computer location settings 2 TTPs 2 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-13_74602684c5b6b9d96ea2638417a47e07_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_74602684c5b6b9d96ea2638417a47e07_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4576
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:1736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    99KB

    MD5

    4d98a71689ec1a5c631d88d9096279c2

    SHA1

    db00397fda491370241f31179d146fc3a05315ea

    SHA256

    fc8cc363d4dbd2de53fd0abc303ffebb4604a18510c75c08f750ac900ad0f0dd

    SHA512

    b2520e94d77589cbcc87ac643dbc261f16beefb59addeb0f327fe4e87779e30075eefd5ab5deda370be4ab1ad9aa2a20118b9db08a48fb5e745f3912da9c9fa5

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1736-47-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4576-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4576-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4576-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4576-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4576-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB