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Analysis

  • max time kernel
    142s
  • 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
    06/06/2024, 19:17

General

  • Target

    2024-06-06_a5bf8aeb1e3f1251e16e8c15cb878315_cryptolocker.exe

  • Size

    84KB

  • MD5

    a5bf8aeb1e3f1251e16e8c15cb878315

  • SHA1

    c1b0e14827393b90279774f3146ca19eefd4b6e7

  • SHA256

    5bc480a6192a89bf36e78266f31309522b05e666cd1f9b913d45ed2ebfeb7e8f

  • SHA512

    60752fe519e7b41779e60b091b2704dadaac82dc31490ca6883085917c095b9ea2a0374a6241839bcc59de1b057ab9f1ddc424de6c270829ebeaba0a96097df7

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrCD:TCjsIOtEvwDpj5HE/OUHnSMq

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2024-06-06_a5bf8aeb1e3f1251e16e8c15cb878315_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_a5bf8aeb1e3f1251e16e8c15cb878315_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1348
    • 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:3640
  • 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=1416 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4180

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      84KB

      MD5

      dd72442de66309f1ae2c04ef374bb5cf

      SHA1

      c5092175a60a01243192dae93a6cc2a2bb445a1e

      SHA256

      9232f843ed43530929fa8621f9f655bad52d22458a8c9b45e044dff4d334af81

      SHA512

      a55bd2af50622a988d530791ce9bc3ba24dadaee8224813a7d2f6740467da43cbcabdb056e7927a27cb68f618fb76929026ceb2dacfeb80d3e8bb851db5fb966

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1348-0-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/1348-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

      Filesize

      24KB

    • memory/1348-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

      Filesize

      24KB

    • memory/1348-3-0x00000000008A0000-0x00000000008A6000-memory.dmp

      Filesize

      24KB

    • memory/1348-24-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/3640-25-0x00000000005B0000-0x00000000005B6000-memory.dmp

      Filesize

      24KB

    • memory/3640-18-0x00000000005D0000-0x00000000005D6000-memory.dmp

      Filesize

      24KB

    • memory/3640-48-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB