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Analysis

  • max time kernel
    93s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2024, 03:16

General

  • Target

    2024-06-09_e7be04feb2f6da249997327e6edba3e4_cryptolocker.exe

  • Size

    37KB

  • MD5

    e7be04feb2f6da249997327e6edba3e4

  • SHA1

    541344627dfa53865f2e9428e2de853d2b82f14b

  • SHA256

    f99ec16665002ae6261b48f919568b9fca0e0eecb73e5fe7dd02e0e4ce236eb1

  • SHA512

    69e285a3cb9166553dc3b27b89ffec059deb46f38aadf7ce603a7e0a7f826347a1a79283f6b409c85f64cc1341952c97cdf95a9f48268a72235def467600f458

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4M:fT+hsMQMOtEvwDpjoIHM

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\2024-06-09_e7be04feb2f6da249997327e6edba3e4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_e7be04feb2f6da249997327e6edba3e4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1244
    • 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:5000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    d04ffd3609b83be84ec3a37cb366a749

    SHA1

    8b2b7d46b4c544ecaad29189a75e3e85408dbdd8

    SHA256

    d79c608a6abe6991522a800dc8472dcb51c984021c0cb4c1a0ee87eeaab8380b

    SHA512

    ec5e6912293cd4bfe9a8d34b05fd9a7c27c80e679d02849f71a53b4c76a3496e8bc3067b76f3dac513924f90ac3fa32a7c5da1c153de72db605656937586d923

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1244-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1244-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1244-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/5000-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/5000-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB