Analysis

  • max time kernel
    148s
  • max time network
    160s
  • 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_53990de269da670c74a9e658a412c922_cryptolocker.exe

  • Size

    46KB

  • MD5

    53990de269da670c74a9e658a412c922

  • SHA1

    9dea92ea131b1fcaa678356843af6f0666cf33b0

  • SHA256

    e5250f45f3c4b75b51c6ce0d695315569b62461323471bd022159c6be175ea84

  • SHA512

    9b7c24b7c912d8d66843309cee1003ca70fb75a9afffb82c5fac5d7e889fd6e507ac7c74e96ee94f9ef5cfa36341dee8deb28be2d4b674f42b7728f8c2f470a5

  • SSDEEP

    768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAP5:P6QFElP6k+MRQMOtEvwDpjBQpVXg

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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_53990de269da670c74a9e658a412c922_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_53990de269da670c74a9e658a412c922_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2012
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3272
  • 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=4744,i,15142778360084620907,1763097090506261076,262144 --variations-seed-version --mojo-platform-channel-handle=4372 /prefetch:8
    1⤵
      PID:1668

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            47KB

            MD5

            59dd7b3782d97be2069a85bfa9d76990

            SHA1

            f21baf32f3ec8ed531b94a702ce63835c6bb66f0

            SHA256

            64798fe77a7ef159e7739536b967ed60e621f07ff0475ba70df9062b4b9a1c5b

            SHA512

            cd1781b5a5ddd6eaba8021506c0809834a243a06d5ce57b4d222fa1f6b2abe57190932364decc714a17aac324fff78041f8aa229ad61ac7d2f46d3c218049507

          • memory/2012-0-0x0000000000500000-0x000000000050B000-memory.dmp

            Filesize

            44KB

          • memory/2012-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/2012-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

            Filesize

            24KB

          • memory/2012-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/2012-17-0x0000000000500000-0x000000000050B000-memory.dmp

            Filesize

            44KB

          • memory/3272-19-0x0000000002080000-0x0000000002086000-memory.dmp

            Filesize

            24KB

          • memory/3272-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

            Filesize

            24KB

          • memory/3272-26-0x0000000000500000-0x000000000050B000-memory.dmp

            Filesize

            44KB