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Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    25/05/2024, 02:43

General

  • Target

    2024-05-25_70ea84e6d93808b878592b6c0fad25b2_cryptolocker.exe

  • Size

    39KB

  • MD5

    70ea84e6d93808b878592b6c0fad25b2

  • SHA1

    b856610dd6e542ccb44b8ab93cc7c7ef668c1a04

  • SHA256

    5fd21708e5c70731890b15f84a45776b84bfd29fbb7cda91b5877584aaa23f5d

  • SHA512

    e6ab6d59ba26faa3e6a52c4d6d54db5f7d14032a66f7562199fad49ced5ac0d35bd3531e5b6828943d2ac6f874cae1e1d03a3cc5bc5d77678c20d7c5dfc386c3

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYfF1:qDdFJy3QMOtEvwDpjjWMl7TW

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-25_70ea84e6d93808b878592b6c0fad25b2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_70ea84e6d93808b878592b6c0fad25b2_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1032

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    c512bc0169030d0d11801fe4cf96bff6

    SHA1

    d0cd0a17d5f0b027be35a18f23770e674101b1d8

    SHA256

    17d1439b2a595486b89b8523b9f2dc5f74a0fa7bea3140d77d1dd3ec24cf4917

    SHA512

    bbd4d44453f4faef12a53e5c7f3176071f92d17ea18d30fef2e64687458ff2022acd96c50a326394e533584509693fdafaf322f5aba7a9c6744377c4cb0efafa

  • memory/1032-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1032-20-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/1032-21-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/1032-28-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2932-0-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2932-9-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2932-8-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2932-1-0x0000000000440000-0x0000000000446000-memory.dmp

    Filesize

    24KB

  • memory/2932-17-0x00000000022A0000-0x00000000022B0000-memory.dmp

    Filesize

    64KB

  • memory/2932-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB