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Analysis

  • max time kernel
    134s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 17:23

General

  • Target

    2024-05-30_033af87b560081f55c648b2c05804b5f_cryptolocker.exe

  • Size

    65KB

  • MD5

    033af87b560081f55c648b2c05804b5f

  • SHA1

    83525c6b74c0f2f9103ab047d79b3e25f6b20479

  • SHA256

    17fb268398950e92bc82550258b94c00733918a715f6f23f1e5f671183ffdccd

  • SHA512

    9a6fcd537187bdc08edc012a39f4021861e3fece759da4d092c5fc08f975c8e9a80b71729e24654a7f852a31ce1b7a48c13542ff55c9178ba09bca76da0a9a56

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIzYI:TCjsIOtEvwDpj5HE/OUHnSMH

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 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\2024-05-30_033af87b560081f55c648b2c05804b5f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_033af87b560081f55c648b2c05804b5f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4840
    • 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:2900
  • 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=4040,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=1960 /prefetch:8
    1⤵
      PID:4852

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      65KB

      MD5

      0fcd9ab05882a3aaaa32a669095e2c08

      SHA1

      5aa4495d425ed1a2d8535f3b2eba7c51789d4d74

      SHA256

      37918fadde71fb07872c40da0da478712f5ae06e552b656fa6847516c940e30f

      SHA512

      83272586532b80dfd0bc4dd69b3c481d9dec8182684eb2c9f9b0c5c3f4b108b7f05ac53fb45d21bb7367f8bae6be5ac5e829c0896ee5b07d8bde5f19b23e1ac3

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2900-19-0x0000000000750000-0x0000000000756000-memory.dmp

      Filesize

      24KB

    • memory/2900-25-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/2900-48-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/4840-0-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/4840-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/4840-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

      Filesize

      24KB

    • memory/4840-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/4840-16-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB