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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/03/2024, 21:32

General

  • Target

    2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe

  • Size

    57KB

  • MD5

    760b02f89b42cdb9838e858c154b68a1

  • SHA1

    5ccc70ab6116dd74bcd0e7172b25485e6720fd94

  • SHA256

    9f2e53a3d30be257c7ccfb40a75960933dc2fb4c8412c07d4efe27a31593aec1

  • SHA512

    f756e02bcad70a3a558615d516c1a10ff1496f4647ea2c318839af395571536d3c25382c549c538aadaafdcdd736d71cb79c5e1c99c551cdd03bb50c230ef86d

  • SSDEEP

    1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHF:btng54SMLr+/AO/kIhfoKMHdk

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4116
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3708
  • 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=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4268

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      57KB

      MD5

      3fe262886314f83391011dfccb29268e

      SHA1

      1a75b6b3f3a60634e90dc39d88c1e27533409994

      SHA256

      4d8e5f1942b670bb18db4d21a87b4e4950367a61946ec2a5f50db948d33600ee

      SHA512

      094f11eb65284f84609869437a3f94e862f7239edd19a07756fdcb30c1d9acd9ffb5f253cf92dacc030a61cf626fd24fd02158fcacb8bb55b8a706eeed591963

    • memory/3708-20-0x0000000002090000-0x0000000002096000-memory.dmp

      Filesize

      24KB

    • memory/4116-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

      Filesize

      24KB

    • memory/4116-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

      Filesize

      24KB

    • memory/4116-2-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB