Analysis

  • max time kernel
    140s
  • 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
    02/06/2024, 04:46

General

  • Target

    2024-06-02_daef39f24182b3a380eb4901de2bf4b7_cryptolocker.exe

  • Size

    43KB

  • MD5

    daef39f24182b3a380eb4901de2bf4b7

  • SHA1

    ea51400203c4f8797cb2eba86d06519aaf6bc86b

  • SHA256

    c83ab739389de64d0bbe5dd8e31746e7806c996a9d05ad07de6fd898c665ee5d

  • SHA512

    d12ba7e05b43c5a9a1f37eb68e6d2bd51867b14073a650cec2883510c11d11b1af23fc4bebe97c296b451d1a88d0b8880c892bdc56b04b954141eee149244d60

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/agqBT:6j+1NMOtEvwDpjrRtq1

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2024-06-02_daef39f24182b3a380eb4901de2bf4b7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_daef39f24182b3a380eb4901de2bf4b7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4756
    • 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:756
  • 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=3096 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1004

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            43KB

            MD5

            f1dec24c0d40dddec993b3a2cba799a9

            SHA1

            96847f527f792fac1998a2749a1b32d3adbf895f

            SHA256

            92cb6c439bcbd6d9947a31b37e52885e711405a1c263751554fd390a2cac4722

            SHA512

            fc67d88c1ff0e8f74214d640988812085291c4195f599d3a81df8a55dbeda19355ed5cba663397447a4d64818ff80af22494b6e855f6820a65fcff006e62f531

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/756-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

            Filesize

            24KB

          • memory/756-25-0x0000000000730000-0x0000000000736000-memory.dmp

            Filesize

            24KB

          • memory/756-48-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/4756-0-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/4756-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

            Filesize

            24KB

          • memory/4756-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

            Filesize

            24KB

          • memory/4756-3-0x0000000000850000-0x0000000000856000-memory.dmp

            Filesize

            24KB

          • memory/4756-10-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB