Analysis

  • max time kernel
    131s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-06-2024 07:53

General

  • Target

    2024-06-14_9fa5d693e7c6230ac9d9c69616c9ec95_cryptolocker.exe

  • Size

    42KB

  • MD5

    9fa5d693e7c6230ac9d9c69616c9ec95

  • SHA1

    4292b6f04ea1a5c21eb5d89644474c8ad5d483c3

  • SHA256

    43869431b7e4f30708c2824486d7208416ad95d7f73194dd0485c43b3bd78990

  • SHA512

    93b92761e6bb06a643c5e9dbde272a038b1e695bbf5a616b6c06b056f78dfd7296601ddc1b733ec6d63264eb65143808d1271c5365c466f98908222de6423540

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDb7xfy:ZzFbxmLPWQMOtEvwDpjLeJAsKcb7Zy

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-14_9fa5d693e7c6230ac9d9c69616c9ec95_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-14_9fa5d693e7c6230ac9d9c69616c9ec95_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4148
    • 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:3008
  • 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 --field-trial-handle=4284,i,12594301322143882025,16832588342008839449,262144 --variations-seed-version --mojo-platform-channel-handle=4088 /prefetch:8
    1⤵
      PID:3620

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      42KB

      MD5

      44d8906bbab9f630c4d214acb679fbd1

      SHA1

      82271826c5c0e565abdac77fef057bb4001e30db

      SHA256

      a0e3900c45b6faa09472bd49f0d17c2dd78fd59e3628337a3e960910de3936a5

      SHA512

      561d000f78ce6ba0ae59cd548c962e1cab651ae1739ebd677369f482a401a440d16b15605f1ae68780c71e5325fc3eb9b123c64fbbcf20bccfc2c2ac517aa656

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3008-18-0x0000000000450000-0x0000000000490000-memory.dmp

      Filesize

      256KB

    • memory/3008-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/3008-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/4148-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/4148-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

      Filesize

      24KB

    • memory/4148-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/4148-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/4148-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB