Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-05-2024 02:48

General

  • Target

    2024-05-25_989ea9edf7979349728002fb556f62d5_cryptolocker.exe

  • Size

    50KB

  • MD5

    989ea9edf7979349728002fb556f62d5

  • SHA1

    c3f6f7d41bcd4bfcf6b46213fb0df332d85d2765

  • SHA256

    efcdfd8a892183cbe490aae6099f9e2c077a1bc3a1791dcda4940515f2fec26b

  • SHA512

    d3a134d47e2f59cec16edc1db5f361440f28bda4434b491628a8fd04c763988bae437c9596d863310b856e9fb243528410e6248c886a3bbdba9abcda2d2afec4

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ15x8r8:ZVxkGOtEvwDpjcs

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 2 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\2024-05-25_989ea9edf7979349728002fb556f62d5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_989ea9edf7979349728002fb556f62d5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4596
    • 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:3416
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4064 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3356

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      50KB

      MD5

      920dcaf71c3471312138b09c50640594

      SHA1

      5e0ae006e1d719db484b0aefc0d676f1b53bddc9

      SHA256

      63678d1dff16a929f707a40c91d4fbbf34f41daaabf869997b03d130671b1ba6

      SHA512

      e64533358a70715ffdb5218e9b48e0ff5aec30f64b000c844d2bc9c97284b5b1962afbc3686dc8d31fea10377b3630a56246e65fbf38f0c4d47690ba7361b1e4

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3416-17-0x0000000000450000-0x0000000000453000-memory.dmp

      Filesize

      12KB

    • memory/3416-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/3416-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/4596-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/4596-1-0x0000000000530000-0x0000000000536000-memory.dmp

      Filesize

      24KB

    • memory/4596-2-0x0000000000530000-0x0000000000536000-memory.dmp

      Filesize

      24KB

    • memory/4596-3-0x0000000000550000-0x0000000000556000-memory.dmp

      Filesize

      24KB

    • memory/4596-26-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB