Analysis

  • max time kernel
    142s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 18:43

General

  • Target

    2024-05-27_c847729d3942c87bd557a14b43e3c92e_cryptolocker.exe

  • Size

    69KB

  • MD5

    c847729d3942c87bd557a14b43e3c92e

  • SHA1

    2a5c7e8ddcbaedd18872db9324ad6b82160336fe

  • SHA256

    0ccf6f5928347003efecbe93eda24bef276438693f2984c5cfe184fec657b0bc

  • SHA512

    ee70f6a646a2a1b52d3665c4ecd987ac6cc46983b6aad010a4f1dc237a9915a1e85f5a045edecee6e3a130730798d760dcbd6780e2e7ebbf13a32a2269feec3f

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFzE:6j+1NMOtEvwDpjr8ox8UDEpN/jw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-27_c847729d3942c87bd557a14b43e3c92e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_c847729d3942c87bd557a14b43e3c92e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2636
    • 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:2932
  • 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=1420 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3700

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      69KB

      MD5

      e4d590c91cac26c8c13885782996810b

      SHA1

      96a4241edece116f49d9bda06655fb35a6ae50dd

      SHA256

      bd9d51a5e9e09a56e31592af4479d466a71917e60431543bb42727b1e5ac8168

      SHA512

      91e72fedb38aca9bf7f73e41157edd9c7f251cecf185690c998f2ef761543c5ae4d7b3a3118f139227e93a7f9dfd82256a48f1a15d2e2c4575df29d896defba3

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2636-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/2636-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/2636-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/2636-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/2636-25-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/2932-18-0x0000000002070000-0x0000000002076000-memory.dmp

      Filesize

      24KB

    • memory/2932-24-0x0000000002050000-0x0000000002056000-memory.dmp

      Filesize

      24KB

    • memory/2932-48-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB