Analysis

  • max time kernel
    163s
  • max time network
    177s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/03/2024, 02:40

General

  • Target

    2024-03-19_90f27bd8eea74788a8e54fc04ead34ba_cryptolocker.exe

  • Size

    128KB

  • MD5

    90f27bd8eea74788a8e54fc04ead34ba

  • SHA1

    e56070af0fc00c8e91eabd9ec72f04aa54400174

  • SHA256

    67f63005483179251d56ffa5bf9c95bc51c13e5dcb3bd47aaf7a408ec8925bd7

  • SHA512

    0fc29cdb2c527b44ea5b25cc1dacb269dbeec4677cc8a50db995f1f789a4e2bfd2e1fec4ae1496a8f46f3bc2e9606e3a8517f7a4cbd5cd7ef82c56e60293333b

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//fRJ:vCjsIOtEvwDpj5H9YvQd2RJ

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\2024-03-19_90f27bd8eea74788a8e54fc04ead34ba_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-19_90f27bd8eea74788a8e54fc04ead34ba_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2924
    • 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:2756
  • 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=4256 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4704

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            128KB

            MD5

            c10b31112a6238f1ced8b75b8883af46

            SHA1

            8e112a3f472d2f8b333938f735d4daef486c355b

            SHA256

            80fca49bcd310e16bdbdbc7216bc66f89e4472b2be3be4b8f49b04dc125d84f9

            SHA512

            b6224260df3babf4fe988c5b8bfb9c9fc8060c3c25dbb2859bf1e61809cb0f561188a223ed9f85b59d51f9711a5dfdf6a6a540cfb5657b4c647a74a53cd0d42e

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/2756-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

            Filesize

            24KB

          • memory/2756-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

            Filesize

            24KB

          • memory/2924-0-0x0000000002290000-0x0000000002296000-memory.dmp

            Filesize

            24KB

          • memory/2924-1-0x0000000002290000-0x0000000002296000-memory.dmp

            Filesize

            24KB

          • memory/2924-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

            Filesize

            24KB