Analysis

  • max time kernel
    94s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/05/2024, 19:12

General

  • Target

    2024-05-29_882101a1ceb5ead8c24a348800c4c429_cryptolocker.exe

  • Size

    96KB

  • MD5

    882101a1ceb5ead8c24a348800c4c429

  • SHA1

    1f18ed436031d2ae66480f1d918e4e74a24ea022

  • SHA256

    82ba14f4cd2b1ae11756a34b055c67b8f4d398bef71b471ed8f393bb763d5b83

  • SHA512

    6018306bd92f16e2bba7104b800387551d05c594366d27612a4a9b3d9b4b31152c40b69597f899d99929c89ee1434590f582513b99f45c0a183027e478e8dd53

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvAcc:xj+VGMOtEvwDpjubwQEI8UtzNcO8Acc

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-05-29_882101a1ceb5ead8c24a348800c4c429_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_882101a1ceb5ead8c24a348800c4c429_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4840
    • 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:4952

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          96KB

          MD5

          514933947eba0d3ab2e66bbac08629a5

          SHA1

          148ecdc5d3ce7d183d451e5d8530262423326e75

          SHA256

          9df98624a190276f9a47f89bd5060411fbbd3698f14bf0b6cc8933f2eccde2ab

          SHA512

          c4dceb71e706e63c65a5685afc6d601da428b626240a60173a7bd9c197e3bf9af2de7b1f97b12cb8dd6fc6303bd42652d9c895c96b8a12796ae6b659d12e6af7

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4840-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4840-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4840-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4840-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4840-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4952-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4952-20-0x0000000002000000-0x0000000002006000-memory.dmp

          Filesize

          24KB

        • memory/4952-26-0x0000000001F50000-0x0000000001F56000-memory.dmp

          Filesize

          24KB

        • memory/4952-49-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB