Analysis

  • max time kernel
    133s
  • 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
    30/05/2024, 04:02

General

  • Target

    2024-05-30_8b236794ee29f3aa88f017e13a179d90_cryptolocker.exe

  • Size

    49KB

  • MD5

    8b236794ee29f3aa88f017e13a179d90

  • SHA1

    dcb392111239b7e9040b670c230bc72de3f39b1c

  • SHA256

    b8c2e11b383989717d163213fd88e7c4d3ed785efac1ac54925d2f40e6d52498

  • SHA512

    de7c3e144e5b3209e07a941e89d376794da16a4dcbe109dc8b477820094473573757dfa96c6dd37e286b5895fd59b9d5e273c13f24e5fe15739b9e4b99981ed3

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0n5:vj+jsMQMOtEvwDpj5HczerLO04Bm

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\2024-05-30_8b236794ee29f3aa88f017e13a179d90_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_8b236794ee29f3aa88f017e13a179d90_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:816
    • 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:4808
  • 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=4312,i,13879737908471496610,15335851594401413307,262144 --variations-seed-version --mojo-platform-channel-handle=3348 /prefetch:8
    1⤵
      PID:3136

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      49KB

      MD5

      9505cc2b8da440b4dea4a1666222b7f6

      SHA1

      c93ad5f071bdef6e45b388599368aaf5807fbbbb

      SHA256

      957ddc84348a7a2c303c9c3a0a258ef10d2758b5832854c69f79808848419ae0

      SHA512

      71c6173ae2eb36b775006d92d1b87932f7b17be1b21f05baa5c104ea9a4fdb764bc801fc4cd15ee098b42fc93452f8585e9de462fda4bf83deae3563cd0e144d

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/816-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/816-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/816-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4808-18-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/4808-23-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB