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Analysis

  • max time kernel
    125s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2024, 21:13

General

  • Target

    2024-05-11_327b653086abce1916842fa455f7ea60_cryptolocker.exe

  • Size

    43KB

  • MD5

    327b653086abce1916842fa455f7ea60

  • SHA1

    aa4a1e996ac8c0085f980bd0df7ffcb58ed9edc6

  • SHA256

    cec3775f7f23bd928bc9ecbdabe164c1dce021ed884e17763da10da21418fbf3

  • SHA512

    8f8949784a98a22112ba2ab4e461579122364402f520e0065d0d0c64b26db06ad0e4509f36d79cfb07605c42fbcfbb9f4c8877379f985a1ad121ae7afa4c93af

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRp5jd:m5nkFNMOtEvwDpjG8hhXj5R

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 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\2024-05-11_327b653086abce1916842fa455f7ea60_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-11_327b653086abce1916842fa455f7ea60_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:60
    • 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:2976
  • 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=4216,i,14486271492189381216,15799931579469722648,262144 --variations-seed-version --mojo-platform-channel-handle=4072 /prefetch:8
    1⤵
      PID:728

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      44KB

      MD5

      719a33279477aeae3656077704871d35

      SHA1

      81ee45825c81a93764f994d66fc328715db62561

      SHA256

      25a892d7590ac9b054b88713c54526c3a1d0db598654d085c667ff9372cfdc05

      SHA512

      dc3427162dce53bd3a3ac1af514fc0fd615d0a11ce169d33e7a85bce58c2e556bb980e64f67428bc43bb53bc4091bc6070e966bb5750e44f8b71fde930aaabe0

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/60-0-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/60-1-0x0000000000520000-0x0000000000526000-memory.dmp

      Filesize

      24KB

    • memory/60-9-0x0000000000520000-0x0000000000526000-memory.dmp

      Filesize

      24KB

    • memory/60-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

      Filesize

      24KB

    • memory/60-17-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/2976-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

      Filesize

      24KB

    • memory/2976-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/2976-48-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB