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
    27/05/2024, 19:07

General

  • Target

    2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe

  • Size

    45KB

  • MD5

    23e2286807afacdfdeee102e1e9d2439

  • SHA1

    5d4fd3d578f5da246a438c717d540bb8f3789d94

  • SHA256

    68d130c466aa6b4cc5c3adb2997c055076232302e43eac2d914a8e086f966e09

  • SHA512

    05ce5dbb21a6bd966dcbecb620756affc0f23bc056c1cfd58d839a8a1d84765df208a104cbffb721a37678f28d33e8330fd45ae2554e58d02531a94ed12b0b12

  • SSDEEP

    768:btB9g/WItCSsAGjX7e9N0hunrknljKr4Q:btB9g/xtCSKqf1rksr9

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\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2388
    • 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:4992
  • 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=3920,i,1067197275908310731,12785105794523264014,262144 --variations-seed-version --mojo-platform-channel-handle=3848 /prefetch:8
    1⤵
      PID:1604

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            45KB

            MD5

            6ea976dcf261a4c90ab519df8282afc2

            SHA1

            62c006064fcbac9bde25f6f359f5730f235db3aa

            SHA256

            2d0090cffb0a137d0a6491677e8e484e0c1cdb3681bc05259ea6cf30d3e6ecfd

            SHA512

            d1a50624c9603a6720360291c83d30ab7d3ce2f7327e3c9e03a1f3536caee63991f6591f197cbf816bbffd6c894f322d6859755b218b6e7e4828af3da2425e61

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

            Filesize

            185B

            MD5

            c0c33f4e7e39ebdb0ef15fd46816f5ab

            SHA1

            c2d978c1bd42c0f6762fa92239f0299786fb684d

            SHA256

            b12bd036a45223ede0ccf91e834082ac2a6c11767660de13b96f583d1eaa0c24

            SHA512

            3238b6a74cc32e1993f2e8c63f1c1534bdcd3b5685cce60dfc6266a5c3535ab09148e1e9f36eb5bf9d09251abde63b873be5abdb14b1f9304aaa5756ff9dab4c

          • memory/2388-0-0x0000000000690000-0x0000000000696000-memory.dmp

            Filesize

            24KB

          • memory/2388-1-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/2388-8-0x0000000000690000-0x0000000000696000-memory.dmp

            Filesize

            24KB

          • memory/4992-25-0x0000000000780000-0x0000000000786000-memory.dmp

            Filesize

            24KB