Analysis

  • max time kernel
    125s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-06-2024 00:43

General

  • Target

    2024-06-13_829c9e58f0def0f6c943e98e45d3ad62_cryptolocker.exe

  • Size

    44KB

  • MD5

    829c9e58f0def0f6c943e98e45d3ad62

  • SHA1

    1d3ae58b53225f356213aaba864567044454ff3e

  • SHA256

    f70ae723217841c1ce5993b1efe0e8dc5d6b1b0198801f7e29ea879eb65c981c

  • SHA512

    0a1a04922eeb232f3187be89918f02b3b68d6953d80c03720dfa133bc5a8fad3b963aee9c3e4f9e31d9be4ee692c97f701d0cef8051d95259538e09829b50bd1

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/agqEy:6j+1NMOtEvwDpjrRtqn

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-13_829c9e58f0def0f6c943e98e45d3ad62_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_829c9e58f0def0f6c943e98e45d3ad62_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4316
    • 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:632
  • 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 --field-trial-handle=3896,i,11049150160560877369,2866371920339304689,262144 --variations-seed-version --mojo-platform-channel-handle=3376 /prefetch:8
    1⤵
      PID:4996

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      44KB

      MD5

      b2970ab626f999a9e780520b939a161d

      SHA1

      447f0c08312f5bacdde86bdc4a151f30d9da8104

      SHA256

      479ffa929019daf90f782292158cb483aee691dcf500b668ac660a35dc772347

      SHA512

      d26d59406b6b40608dcfc734925765b176778bc510b56cee02d3c9945561046c509e8b7100b15dec91afcbf8231900551ccba476a19fa55156acfd51d65e2584

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/632-17-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/632-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/632-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/632-49-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4316-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4316-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/4316-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/4316-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/4316-18-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB