Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    17/05/2024, 03:33

General

  • Target

    2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe

  • Size

    80KB

  • MD5

    8b4389fcd39e6bcb128816fc847bd20f

  • SHA1

    b895eafe43ea201cc55362762cc1ec8659fca421

  • SHA256

    d0a7f6b75303f8874947440ca86fb91989165bb7b604f1df068e68b6be9bcba4

  • SHA512

    87607a1404e799c6ed7f1efbc21e7cc0306734097bbccef27ecec25104a26bdb9592ccd59961df3f811705d6de2a37e719e94592aae00a9b360a0928417c4d5b

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QM:zCsanOtEvwDpjY

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\2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3020
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:1208

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    81KB

    MD5

    5b8f4711fb74bb03769fda9d8eba0d3a

    SHA1

    8431761704afe60531a952bd8cb352349722399d

    SHA256

    c966f316715653dcb964d3aec4425a3bddd78d3ba98b6f1d575248f97ea992c3

    SHA512

    8e0cbfc9655fc70aec9ddea733f6058b9998b626eced419e57b3cab12409e437712451f927264f2a5b826d8ba73c72d7550e81aabf724b1a6941b91b7f2ff491

  • memory/1208-18-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/1208-25-0x00000000002D0000-0x00000000002D6000-memory.dmp

    Filesize

    24KB

  • memory/1208-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3020-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/3020-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/3020-2-0x0000000000470000-0x0000000000476000-memory.dmp

    Filesize

    24KB

  • memory/3020-12-0x0000000000610000-0x0000000000620000-memory.dmp

    Filesize

    64KB

  • memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB