Analysis

  • max time kernel
    136s
  • 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
    28/05/2024, 03:26

General

  • Target

    2024-05-28_163b4f75fb2b8f5fcb5980719fd2a8c7_cryptolocker.exe

  • Size

    82KB

  • MD5

    163b4f75fb2b8f5fcb5980719fd2a8c7

  • SHA1

    5d9d97c8bfadf7a8eb074d9b05b30bcdf4bb8c07

  • SHA256

    4b9ee29a338ccd9b288653bbb954bcbb338f8da77b1126728337f62adc4926d6

  • SHA512

    e08be9e7e8569775356503b97be7a9561c5ee46736cd7903da578c8d6c6201a67a71d6a0685934581c2ce082d533d5d198b9b0abdcaf5a75f6cd0420825392ce

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNqVs:vCjsIOtEvwDpj5H9YvQd2f

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-28_163b4f75fb2b8f5fcb5980719fd2a8c7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-28_163b4f75fb2b8f5fcb5980719fd2a8c7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4716
    • 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:4936
  • 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=3772,i,5711962389779687290,1245653010537220991,262144 --variations-seed-version --mojo-platform-channel-handle=4088 /prefetch:8
    1⤵
      PID:3396

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      82KB

      MD5

      78a6c583adbed9f299320f54af551c61

      SHA1

      feca9ee7fa1bb13ef1c1ffd2c44ec56be97cb873

      SHA256

      0467295f519979eb983817b37035927140283992b8acb89c83118c2b99b618d1

      SHA512

      ef483bfacb911cd696cbefeab89139712f1e650d3910b0e394531acc963efbc3f354b46d378bae039361f73e7594f5ec78c8579ab9166183c3a375fa0d3aae7f

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/4716-0-0x0000000000630000-0x0000000000636000-memory.dmp

      Filesize

      24KB

    • memory/4716-8-0x0000000000630000-0x0000000000636000-memory.dmp

      Filesize

      24KB

    • memory/4716-1-0x0000000000650000-0x0000000000656000-memory.dmp

      Filesize

      24KB

    • memory/4936-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/4936-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB