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Analysis

  • max time kernel
    134s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/05/2024, 06:51

General

  • Target

    2024-05-26_eb7a0f441398c893027baf838ce7e2d1_cryptolocker.exe

  • Size

    83KB

  • MD5

    eb7a0f441398c893027baf838ce7e2d1

  • SHA1

    8ecd22e6e1298a75fc38cbe8e16f2c40e4d0d4a0

  • SHA256

    6540144d17a4f9dd65fadfc3559aa02ed94255490033e2697f831f45472293d7

  • SHA512

    27d990f091d2a5163ed9a61ca79d0ff12deae1b3118b89d00dc7010e9991cb395c684acd7415b726be20165f38792b972d13df288af162e909826837a8cb9b01

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrhcx:TCjsIOtEvwDpj5HE/OUHnSMQx

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-26_eb7a0f441398c893027baf838ce7e2d1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_eb7a0f441398c893027baf838ce7e2d1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1916
    • 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:2680
  • 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 --field-trial-handle=4232,i,1067197275908310731,12785105794523264014,262144 --variations-seed-version --mojo-platform-channel-handle=4400 /prefetch:8
    1⤵
      PID:4428

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      83KB

      MD5

      f179897975f1d28cc5fb455e7187ce97

      SHA1

      d143b450bd5662e266603241d186d738f6472441

      SHA256

      b960a65d2e8c6470ee768b035377d813e20a69b9650b8b7fd471e865f4c00f23

      SHA512

      7879064bca8486432b5f887d8b2fa01797903c9b9558f5b9efc9f1db090ce65c5a1e8daa36e3b8aa7b055296750653f6982576da6a39d0d791098022f0f79c8a

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1916-0-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/1916-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

      Filesize

      24KB

    • memory/1916-2-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

      Filesize

      24KB

    • memory/1916-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

      Filesize

      24KB

    • memory/1916-19-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/2680-16-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/2680-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/2680-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

      Filesize

      24KB

    • memory/2680-49-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB