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Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/04/2024, 09:42

General

  • Target

    2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe

  • Size

    54KB

  • MD5

    49953930d0c4b09b9e3a72143d984577

  • SHA1

    aff32fefad72309ca8036e5dc6f2d096ac941e41

  • SHA256

    ec28076a58f45923cb9e14e191c96a900e99d26412fd176016e405d7baa7ad72

  • SHA512

    ae25a6b3588b0405922516c284113ade519073b334a29d92863cb739fcc24d4f738c93dbb7650b5c5e7474c6bbf6e111d451de22bfe765f2df2d5e3632567729

  • SSDEEP

    768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTb8puq:bIDOw9a0DwitDZzcTLq

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4216
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:4136

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    54KB

    MD5

    d8a0a525818b31c0ffc1e85b584c2b5b

    SHA1

    f38cc125701566f3f58d876f798fac408e986836

    SHA256

    2ebc2c76bf048b3814ecc0422296c5a7fc914b072fbac4d39a7a5a2ff7ad5c3c

    SHA512

    7ad8d97b5af2c4ff5d842f257baa03fbc032def26de9d2b2f3a757d08e3ad111628292b2f9679f6ed9c03c50218e9c802cb82319e367c6b7c72e9fe3bb9d7395

  • memory/4136-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/4136-20-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/4216-0-0x0000000002040000-0x0000000002046000-memory.dmp

    Filesize

    24KB

  • memory/4216-1-0x0000000002040000-0x0000000002046000-memory.dmp

    Filesize

    24KB

  • memory/4216-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB