Analysis

  • max time kernel
    142s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/06/2024, 21:39

General

  • Target

    2024-06-06_e9038d4226c1d7685477d0acb55d03fb_cryptolocker.exe

  • Size

    75KB

  • MD5

    e9038d4226c1d7685477d0acb55d03fb

  • SHA1

    8fc1f6c8f2107e7590ca53a81f8431000ed27beb

  • SHA256

    d56e9510272d109b4e4c0025d7e7536a8ad71c3c4a6d2db358bcf68a4aaa2999

  • SHA512

    d9b7664f0dcaef8841eae5399dd19c2e8871e7746e6a0622008445fdaad91ca2603a2b3a56a77a0df90fe5c125fe2e08dddb776dde2d41afa6c90798c437f76e

  • SSDEEP

    768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMs6gt4:u6QFElP6n+gWMOtEvwDpjJGYQbb4

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 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\2024-06-06_e9038d4226c1d7685477d0acb55d03fb_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_e9038d4226c1d7685477d0acb55d03fb_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2136
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2152
  • 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=4112 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2452

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            75KB

            MD5

            388de437cdab1ebf21f3d391bc3ab599

            SHA1

            c6fe1324bbb72d50f7c927b80478469cd9af8a78

            SHA256

            329d290cf4b75a61bcb43148c88a816862c53c4aaa8d9df404632644518cd473

            SHA512

            76776e0855dd58e0a87cdac5b462c7804938651916c901fab1c0c60d15489fb5087964abe488fba3a7228dfbc7c9a6146b44b16e0a1a5649e3718f91bc6c7126

          • memory/2136-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

            Filesize

            24KB

          • memory/2136-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

            Filesize

            24KB

          • memory/2136-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

            Filesize

            24KB

          • memory/2152-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

            Filesize

            24KB

          • memory/2152-23-0x00000000020D0000-0x00000000020D6000-memory.dmp

            Filesize

            24KB