Analysis

  • max time kernel
    133s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 11:10

General

  • Target

    2024-06-01_45dd18a479c3864711260777545366a2_cryptolocker.exe

  • Size

    49KB

  • MD5

    45dd18a479c3864711260777545366a2

  • SHA1

    37e48205d3f1f2be80bb38db580e6e771c9bd869

  • SHA256

    6a57637669a410a7d7ad98e8c7b60422eb6511101faf1d86c36fdf534f1cfc93

  • SHA512

    46a51d1ea4d541c0740cae90aa31e3276e1a977a3693d5dcb7d630ec927dc9cfb437aac4328af5a34c56124c148368d792725078325a881903a03c4feb29c5c0

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0nd1A:vj+jsMQMOtEvwDpj5HczerLO04BS1A

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\2024-06-01_45dd18a479c3864711260777545366a2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_45dd18a479c3864711260777545366a2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3848
    • 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:3820
  • 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 --field-trial-handle=4256,i,13640054265074968359,8146127767143474550,262144 --variations-seed-version --mojo-platform-channel-handle=3924 /prefetch:8
    1⤵
      PID:1624

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            49KB

            MD5

            269ec076537e6cb841b5d1983daf2fae

            SHA1

            d00811493d1763fb92bf07915b5fbb7abd8ac290

            SHA256

            eae89a1d3f3552eaf8e0f07e16b9db364decf200ac91eb4a5424f4a9ec110f2e

            SHA512

            06bc33e22efb21b9d2cc761fc93b4d7284547f3fcce1434b810bbcfa3535db1a3fb3075b4d4bf3c75e70febc920f28ed3e23729c38ee55c17bdc3970e0442bef

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/3820-17-0x0000000002080000-0x0000000002086000-memory.dmp

            Filesize

            24KB

          • memory/3820-23-0x0000000000680000-0x0000000000686000-memory.dmp

            Filesize

            24KB

          • memory/3848-0-0x0000000000660000-0x0000000000666000-memory.dmp

            Filesize

            24KB

          • memory/3848-1-0x0000000002070000-0x0000000002076000-memory.dmp

            Filesize

            24KB

          • memory/3848-8-0x0000000000660000-0x0000000000666000-memory.dmp

            Filesize

            24KB