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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/04/2024, 10:25

General

  • Target

    2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe

  • Size

    40KB

  • MD5

    1e1937411411931249b85543f1accf50

  • SHA1

    37b69398b0183dc70e0519f3c6331ac3096fb75d

  • SHA256

    365711e4e1f11820ed8a6870b7b427a9ac76f4d7564af1a6f445839885dd3695

  • SHA512

    27f38bdf303e5361ab27def6cab5f4445254cc8431fe729a5f3b23abc14988b2422fc62d75fb4ef000a8c3ecbc8fe9bd3c99c923862dfee694fc8919f40ae626

  • SSDEEP

    768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vlk:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLe

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 3 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4784
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    0299faa8b07589e09ed51a6384a6466b

    SHA1

    62f983b0554a3c767e54833cec4127faeba2cd2c

    SHA256

    60d6ffb641f94f99a84f05e6dec41b57c1528306da1856360e379c77b3e569bc

    SHA512

    7d9682b814cb06330e61582a51deed28d74baedf4818236d9aa5c208be31f9fef2ffadb5261b01481216ec21edce4e140dd6ba63f422654d749c28d0c1d02404

  • memory/2628-19-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

    Filesize

    24KB

  • memory/2628-25-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/4784-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4784-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4784-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4784-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/4784-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB