Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2024, 15:28

General

  • Target

    2024-01-27_54c401fcd155c8fbe3e262f4fc727583_cryptolocker.exe

  • Size

    78KB

  • MD5

    54c401fcd155c8fbe3e262f4fc727583

  • SHA1

    ed762199835bb8d381dc0872e0ac708c5f84000b

  • SHA256

    2cfaa0c35103036b6a08386360d703b3588915130c0f71325eee19f2a36e3ce2

  • SHA512

    8a21526edfb1f2b20dc438d90c3eec19c02b92e415442bb0bbee77e0fa79c3a53ec73bc4e1bb0ad8c7f85be255007ffd89ff2d2207085f4c00be280ff55e8572

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHF/S:vCjsIOtEvwDpj5H9YvQd24

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-01-27_54c401fcd155c8fbe3e262f4fc727583_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-27_54c401fcd155c8fbe3e262f4fc727583_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3276
    • 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:3016

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    78KB

    MD5

    8334275b6f37f72177c7e88897f6b1f7

    SHA1

    493ce8891a5feb89a920cada96b4408d40a59fdb

    SHA256

    905794fd93e42d88aca25514f4e906f665f4b8f077b8a2ab0e047c3c5b7f4ac4

    SHA512

    41b4193577423520be6e4b7bdc7e65bdf3352142f5fde48eb44eeb3912e091a955f9344336da871c608783ba859e4d3ae2795b9564e73acdea6ae96b9cdfb762

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3016-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3016-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3276-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3276-1-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/3276-0-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB