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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/05/2024, 04:48

General

  • Target

    2024-05-24_eba7698eb18796dae1951688b7f304b9_cryptolocker.exe

  • Size

    39KB

  • MD5

    eba7698eb18796dae1951688b7f304b9

  • SHA1

    2e81895cbecccd547be26a4cb3c76073f92a73f9

  • SHA256

    1495544d3a8c5b208a1af29ebe73514d0bac540d3c26e6d1ff4f4d40a22fbf4a

  • SHA512

    b3a884ee20e47aace1b18db738015b1336842889025849b3c9c66a2b3c010cfee0ae0e68632abc1366de42a4cd32fbcc8c16a2fbd8bb96053050fc14c9fad685

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDbq:ZzFbxmLPWQMOtEvwDpjLeJAsKcbq

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-24_eba7698eb18796dae1951688b7f304b9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_eba7698eb18796dae1951688b7f304b9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3628
    • 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:860

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    2d7b49cc5ffaf469e63943df99e1d23f

    SHA1

    22287b914caeb36766ed5ad4de2a23f2aca8db76

    SHA256

    1d4cf7cb67514d9ca48d5977682b4f21711b720fc3e75ed5046110ea5f957d50

    SHA512

    1841ea5a57aa0948efee3ef83a3debc0e5179c4b50dc524e93e70c80f405ec0057032b87f1b423b2b0d708888769157eef6fe0c9d0fbb92069fc4ab8788472e1

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/860-17-0x0000000000450000-0x0000000000490000-memory.dmp

    Filesize

    256KB

  • memory/860-20-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/860-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3628-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3628-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3628-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/3628-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3628-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB