Analysis

  • max time kernel
    143s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-06-2024 19:04

General

  • Target

    2024-06-06_fe00eb5a34402fa2b4647cbf3893e282_cryptolocker.exe

  • Size

    60KB

  • MD5

    fe00eb5a34402fa2b4647cbf3893e282

  • SHA1

    13801e42c0554e846184a52eebe905bcf6eba24f

  • SHA256

    b297b571328a39e41a0c441709feb0249c73baa81d10b18d668b91731bd5d5a4

  • SHA512

    758efb972d8b7ac928874795fecd875d5b5ee89c3b6cfcbd11f95197d32073e2a6c92dd5dc28512e28d173b5424e9bf818b36a67af25f5e67c384d65cc2ff983

  • SSDEEP

    768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XGJt:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWGt

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 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\2024-06-06_fe00eb5a34402fa2b4647cbf3893e282_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_fe00eb5a34402fa2b4647cbf3893e282_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4048
    • 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:2820
  • 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=2232 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4472

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      60KB

      MD5

      be9374f51add61e93a86a4ba9290f07e

      SHA1

      5c3dd1a4a64817f94a41b4a2c765e4b09817272d

      SHA256

      612d7fe0b31306a97987f1c6c3598ec8040fa3ea540b8c53aec0eb9bdb1edd5f

      SHA512

      c03aa74cfc9d125ab3a0acda2657479496d419b76caf9607e733154cc03c8481edbd8d53c520a1c79ffe359d728e2352071998817a2445c24260d7d0fc76a579

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2820-18-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/2820-24-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/2820-48-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB

    • memory/4048-0-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB

    • memory/4048-1-0x0000000000600000-0x0000000000606000-memory.dmp

      Filesize

      24KB

    • memory/4048-2-0x0000000000600000-0x0000000000606000-memory.dmp

      Filesize

      24KB

    • memory/4048-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

      Filesize

      24KB

    • memory/4048-25-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB