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Analysis

  • max time kernel
    165s
  • max time network
    170s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/03/2024, 23:48

General

  • Target

    2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe

  • Size

    53KB

  • MD5

    58fb686521e409a57b61fe114a07b31b

  • SHA1

    24da1df198a652e3ab7c07712a0a9018ba40b305

  • SHA256

    600f2ab48b3e1e9f7ac8d565d2638548c4137b574d3caa3ad59abf04fa160c29

  • SHA512

    a288b879deccc36bd58f1754c772cf02b5a9a409ad51c24fc4171a105c62e617d0a04c12e1ee4fad2ead8afff4d54158aac82d083b2dccf8f1e8448d6d8e8e3b

  • SSDEEP

    768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTbmhTbR:bIDOw9a0DwitDZzcTM

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:804
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:1504

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    53KB

    MD5

    104cec8b3e55a7aa0e5b7d2ad3a96ecb

    SHA1

    25f81569ac7355d0440d91c81ee33919752e0c90

    SHA256

    f0bc05ff7ba5a99d2f210a4791dbc59b9a12fe34959942b914538f9455a3b104

    SHA512

    226b56aafa4b99db4010b05e7f6961a78cb28acead9ae1d78c0b969f4e65333898a7eb5ce69e90e835f7b8fb2e69bde8193f6caaf962cb5ed6bb1751884dfaff

  • memory/804-0-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/804-1-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/804-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/1504-17-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1504-21-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB