Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    04/06/2024, 05:41

General

  • Target

    2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe

  • Size

    54KB

  • MD5

    8503e62f8d7938b273a76cdf33e6468d

  • SHA1

    17c007cb0bb976301c4ebe8557991eb4a64c6a31

  • SHA256

    468e0d7a4b1070dd6156fb63df8ec84c85cfe31abb9b214adfdf220925186d7b

  • SHA512

    1a6adb017092808c84cda63cceec474bf532d7648022fc1c7c897a7874a92829e10ac4facdde6c01c12bae6d4ffdd98239340819da448def7b282dfe076442f6

  • SSDEEP

    768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOkaX:z6QFElP6n+gKmddpMOtEvwDpj31iko

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 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\2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    54KB

    MD5

    7e50d8f3c333c66edcbf319e8c9a3c38

    SHA1

    c4e62551d0838ee3aca103587ab2491a4d46f0d9

    SHA256

    3c5ad7ff754164ccb20bee6b4be4f57ad2a0369ff7496e7a7d095ff9511fbd20

    SHA512

    ad113b155581f9e3fddc7ae52f74751b4a6ff1e5ea09e5632aefd7c1e15eff9e1a17ac2a672de1b928041cbe640178d8bfa178c46fdc507b6c50c48bf6bcc35c

  • memory/1992-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1992-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1992-2-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/1992-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1992-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2592-17-0x0000000000470000-0x0000000000476000-memory.dmp

    Filesize

    24KB

  • memory/2592-24-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2592-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB