Analysis

  • max time kernel
    108s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/04/2024, 19:28

General

  • Target

    2024-04-10_48aadec8fdf0fcc4663228641bf392d0_cryptolocker.exe

  • Size

    80KB

  • MD5

    48aadec8fdf0fcc4663228641bf392d0

  • SHA1

    30bcca678806fe8fb74e2fec44084ea1d128bc6e

  • SHA256

    e9ba19ac20d08c2adef1c4498cdb6c699d6e5218b907d306e977e6cb2cb139fc

  • SHA512

    791d9388a9b0f6e726cd7041dadf30a5d8e462ff29c67a418e62968cc1080f91027d8d051cd9422aaf4eb5c52a31a590812f728cdf243ff754820565dd288532

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNqV/:vCjsIOtEvwDpj5H9YvQd28

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-10_48aadec8fdf0fcc4663228641bf392d0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-10_48aadec8fdf0fcc4663228641bf392d0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2340
    • 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:2528
  • 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=1416 --field-trial-handle=2228,i,521073434451423547,2311651514500527526,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3732

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      80KB

      MD5

      6d02dbec3ee16e9fb5ec2b1f0abae723

      SHA1

      18e6305f9c792e35aa449f2b8f5d39d3cfc27645

      SHA256

      42aab838ffc9b40c343380019ede488acaf02068ba64c296eccdc1681b06dae7

      SHA512

      5537994fc5dc1477088861eaa7e41a20778379b92a2e5a53b8754ed8495f7c89ca0fe078836b8266785b900c165d7201881287f84058d8ffee11a3f410fceed5

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2340-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/2340-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/2340-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/2528-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

      Filesize

      24KB

    • memory/2528-19-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB