Analysis

  • max time kernel
    140s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/04/2024, 00:51

General

  • Target

    2024-04-24_9d4825ee73216d2e8ffb4e6f6c8f91e6_cryptolocker.exe

  • Size

    43KB

  • MD5

    9d4825ee73216d2e8ffb4e6f6c8f91e6

  • SHA1

    441a73a8d4e60b415f69dc92511d271a12394e1d

  • SHA256

    1f0f49508e016082951db22f55103fbe301cc5326513671d802d9b7a0913996a

  • SHA512

    471661c2673a7f854f8f39556603d85efb304120980f53a5f730453cd4722fcd334a1cbafa3599d34c4eac30ace3b25547b90117f698ca96cbf1724a71c7aa67

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpneNUa/nOu:m5nkFNMOtEvwDpjG8hgpeNZGu

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-04-24_9d4825ee73216d2e8ffb4e6f6c8f91e6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-24_9d4825ee73216d2e8ffb4e6f6c8f91e6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3104
    • 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:2084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    b38cd888c92b995921594ca8de76184e

    SHA1

    9c08476434fa2ce37dfe77869549ee7d95ec6387

    SHA256

    8b15f10f442986b494fe2d8a3f212879f2efae95b028b6e167d91a49c643379e

    SHA512

    ce4706f93479840ec90e13827166a4401c9373ebdfa2b65240f3112a4c209608d54f99a3b5f376a4c9e1c0a08bd6f825b6768cf6882846c27d8baf7b5a8b05ed

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2084-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2084-20-0x00000000007E0000-0x00000000007E6000-memory.dmp

    Filesize

    24KB

  • memory/2084-22-0x00000000007C0000-0x00000000007C6000-memory.dmp

    Filesize

    24KB

  • memory/2084-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3104-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3104-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/3104-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/3104-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3104-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB