Analysis

  • max time kernel
    148s
  • max time network
    159s
  • 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, 18:30

General

  • Target

    2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_cryptolocker.exe

  • Size

    46KB

  • MD5

    5a9ffdd7833030d87b93749e751c3d2c

  • SHA1

    ba417d5fe15a3b969c9009c4013f0bddbf6e4c3e

  • SHA256

    c68f89e4a44d59b21463bac470c09041680d109b9150437f05eabbe776f77079

  • SHA512

    9fd18dcaec4f39530be669e152604a2065ba3ea67b491f6d3dfc0336301dc99c80f7880c501e95bd1c1c6df6bbe561b1c654adca12fc7c9cd7d98d9cb8b0190e

  • SSDEEP

    768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPh+s:P6QFElP6k+MRQMOtEvwDpjBQpVXK+s

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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\2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1060
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3968
  • 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=4300,i,18168883380598738769,14202261231630113808,262144 --variations-seed-version --mojo-platform-channel-handle=4184 /prefetch:8
    1⤵
      PID:4584

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            46KB

            MD5

            fb671ac634e05de92aa401a1b09b6709

            SHA1

            7108b8dd739206a63cceec4ef90b0907eb293bb9

            SHA256

            cc1e884fa5d291fb1a1b0370d2d00d72ac8606e045347684d35a1755a63215f2

            SHA512

            7965cd567a17324057fc26cf1b80532723e2b7fdb38ba2fbb091ab7ed8f318fd7c1d0837e6686bee895f760a8361f8ec044772a5de73cf6a287310fcee1354d3

          • memory/1060-0-0x0000000000500000-0x000000000050B000-memory.dmp

            Filesize

            44KB

          • memory/1060-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/1060-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

            Filesize

            24KB

          • memory/1060-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/1060-18-0x0000000000500000-0x000000000050B000-memory.dmp

            Filesize

            44KB

          • memory/3968-17-0x0000000000500000-0x000000000050B000-memory.dmp

            Filesize

            44KB

          • memory/3968-20-0x0000000000510000-0x0000000000516000-memory.dmp

            Filesize

            24KB

          • memory/3968-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

            Filesize

            24KB

          • memory/3968-27-0x0000000000500000-0x000000000050B000-memory.dmp

            Filesize

            44KB