Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/03/2024, 16:27

General

  • Target

    2024-03-18_2c1464b77c367b791d15d1347b85915b_cryptolocker.exe

  • Size

    103KB

  • MD5

    2c1464b77c367b791d15d1347b85915b

  • SHA1

    aa2e344bf673975a7274cc28baa2461d84a50cc4

  • SHA256

    ecd187ae5d834a1db90563eafdbba8f66c5e8b9f93598854028d4868a6817bb9

  • SHA512

    a2115416b3bfd318deee2b6a24e7a24e51c3c0da23ef2303cd760933637258ce363dae36c474ea4a0ad3a6a3289c7ce1b7a887f74f625f4cf0892bd1cf08f536

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNojlEy8fZwmP:i5nkFGMOtEvwDpjNbwQEIikgNyEA2

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-18_2c1464b77c367b791d15d1347b85915b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-18_2c1464b77c367b791d15d1347b85915b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4628
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4492
  • 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=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2796

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            103KB

            MD5

            82be62387eb2db137b541b283b30d491

            SHA1

            b22e65be1e3c6a129f26acd12496ca8070aacd2b

            SHA256

            839fe32e30f495abd2b82a064abafebfb8d7497267d4d0e05de8f413602f67e0

            SHA512

            f16d6d907aff6e4ec85df319d3c49c9d986348d578ddb60505b95f4d8056789ac04af09b06da488a3f717543f7397e51a08229b18cbcb300118866d245f45f93

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/4492-20-0x0000000000660000-0x0000000000666000-memory.dmp

            Filesize

            24KB

          • memory/4492-49-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/4628-0-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/4628-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

            Filesize

            24KB

          • memory/4628-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

            Filesize

            24KB

          • memory/4628-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

            Filesize

            24KB

          • memory/4628-10-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB