Analysis

  • max time kernel
    146s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 21:43

General

  • Target

    2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe

  • Size

    91KB

  • MD5

    f23d3106fdd4e6193c79d4b333731016

  • SHA1

    c4ab05f9b832711597a0cc54c91f851705372ee1

  • SHA256

    8b457ca6057494896c71260c426a73e4413867c0d63c11cb68d38b2da649698a

  • SHA512

    0b0fe4457dd922ef3ce199e334856b7bba84f7326bf98ff07b550061c3bd86a9408dcd12c82607ae5a5e8b6c03ff3ff6dc0f21dcf744a8af3924032842220ef1

  • SSDEEP

    1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAyuF8:n6a+1SEOtEvwDpjYYvQd2PW

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 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
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4768
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1484
  • 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=4012 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2932

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            91KB

            MD5

            9e884791485b563d4e5d2c7a9050e57f

            SHA1

            67cc987d9b0f16503d94f0c5ed61457df793bb90

            SHA256

            4db7708147ee9692141e86bd09d21f946ff1e28fec57f35545bbf8cb0e702b09

            SHA512

            3a5e781af38af3ef5da1444990ff18188604a887c457b49402eaece459bb02343e1142159635fb233e9348b63c3ad6c5cb72ba03da551dddad03dd6c54ddac65

          • memory/1484-19-0x00000000007C0000-0x00000000007C6000-memory.dmp

            Filesize

            24KB

          • memory/1484-20-0x00000000007E0000-0x00000000007E6000-memory.dmp

            Filesize

            24KB

          • memory/1484-26-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB

          • memory/4768-0-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB

          • memory/4768-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

            Filesize

            24KB

          • memory/4768-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

            Filesize

            24KB

          • memory/4768-3-0x0000000002100000-0x0000000002106000-memory.dmp

            Filesize

            24KB

          • memory/4768-14-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB