Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/06/2024, 14:35

General

  • Target

    2024-06-06_bd2140a9c7a732d7d2ee38eb0a5f5f94_cryptolocker.exe

  • Size

    38KB

  • MD5

    bd2140a9c7a732d7d2ee38eb0a5f5f94

  • SHA1

    8883cb9dcd0d8d1f90150b10465ead919f69b880

  • SHA256

    50153becdb6b6e8f55cba7bc67c705888ef3e04fd1b3baa8309d3b9997aa1986

  • SHA512

    be07890a6ec183afe181c85a32eda09b50c307419369c2c1523d27d8d140650b5da199fb8b531f3fb4ded5219312d804b663496d08734b9e8712eecc7d391161

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+41:fT+hsMQMOtEvwDpjoIH1

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 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-06_bd2140a9c7a732d7d2ee38eb0a5f5f94_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_bd2140a9c7a732d7d2ee38eb0a5f5f94_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1220
    • 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:1932

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    38KB

    MD5

    43a6a935a22e87abf4888c0a1c76336d

    SHA1

    ae3377bec97e536471a339410ba1ec74a2b477b0

    SHA256

    cfd90bc6998d306a28780289bd48cf5490310f4ca239157daff864c497d44ca3

    SHA512

    f2a2fc34a05ce1a92fd1b59e76adbf1d01144935d7dc2506668b0203baa9feb0f2ef4f94dd18bf95301965edf271ff50fcd3fe2ac70124d6c9fa4e3738a697a8

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1220-0-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/1220-1-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/1220-8-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/1932-17-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/1932-23-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB