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Analysis

  • max time kernel
    136s
  • 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
    29/05/2024, 00:36

General

  • Target

    2024-05-29_9e11783e36b803a30b16cf8a0f06ae66_cryptolocker.exe

  • Size

    44KB

  • MD5

    9e11783e36b803a30b16cf8a0f06ae66

  • SHA1

    40524027da5430066317e436c6df6f9189c54a28

  • SHA256

    758ca36442f12a429d4fd437c8d1b372d67fb00de784622a6618888a9171b501

  • SHA512

    9d53959bcdfbf8678c9abb7eeec510231acfa9e99cb331d57b03ec443e52e2f05eb38a024a9180e77d6fc414b5ff1f1aa0e3a1ddc3a0e6c7122412a18969b682

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc66TcuI:vj+jsMQMOtEvwDpj5HW5scuI

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\2024-05-29_9e11783e36b803a30b16cf8a0f06ae66_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_9e11783e36b803a30b16cf8a0f06ae66_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:228
    • 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:4236
  • 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=4196,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=4032 /prefetch:8
    1⤵
      PID:4472

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      44KB

      MD5

      4cdf15b9275098d59a148d744f5a2513

      SHA1

      6d1c146da5430d7d5363785ba0d1ba42f711355b

      SHA256

      b52879ee7e0e69916c71d84b97432004bf1680400cbb84e36b005518cc6fccd1

      SHA512

      248c96964c5b33d01222ae9d7f810681aab296bcbf0b28b27959dff25b27e1b7cf116448c20a2724b7822eb3c437eb0fa1393456f91da611db05f3f73d516a35

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/228-0-0x0000000000560000-0x0000000000566000-memory.dmp

      Filesize

      24KB

    • memory/228-1-0x0000000002070000-0x0000000002076000-memory.dmp

      Filesize

      24KB

    • memory/228-8-0x0000000000560000-0x0000000000566000-memory.dmp

      Filesize

      24KB

    • memory/4236-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/4236-23-0x00000000005C0000-0x00000000005C6000-memory.dmp

      Filesize

      24KB