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Analysis

  • max time kernel
    143s
  • 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
    31/05/2024, 00:28

General

  • Target

    2024-05-31_53e3035c28366bc8a3a488a133c48b2a_cryptolocker.exe

  • Size

    42KB

  • MD5

    53e3035c28366bc8a3a488a133c48b2a

  • SHA1

    09b0ad784447d82eced885b8b8d2afc9ef8d24b2

  • SHA256

    d7e652f4e22a9f2c90219de2fcb7973add6ece24534f4a043c69ad2e7655961d

  • SHA512

    a75a578c3fb7416b258f5a1acd1c6384bba91160b29a722c9aa6460663919637d4d14b7dfc93acbc163bfb3352ea96aa0d0857a082b27dccacb2a3d9033b3924

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnY1n92:m5nkFNMOtEvwDpjG8hgpY192

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-31_53e3035c28366bc8a3a488a133c48b2a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_53e3035c28366bc8a3a488a133c48b2a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4444
    • 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:3124
  • 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=1340 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1520

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      43KB

      MD5

      1ac466775f4d8c05493c2e57797368bc

      SHA1

      0110e68692941d60d73c31e651e1a1520144c444

      SHA256

      c4ecb5459a1e229a455ce8e67e1822fa86e4f266bdb4591eb4d3fb0195c0c97f

      SHA512

      b407cbb3c0f2dfc0626d4d44c07a447619fe468942c7651c13b2b36121be5cc1561f96759c594371b5f3d7cb36670c2fcf65cc1764b9f9a8d178ad58cd117c99

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3124-25-0x0000000002140000-0x0000000002146000-memory.dmp

      Filesize

      24KB

    • memory/3124-19-0x0000000002040000-0x0000000002046000-memory.dmp

      Filesize

      24KB

    • memory/3124-49-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/4444-0-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/4444-1-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/4444-2-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/4444-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/4444-13-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB