Analysis

  • max time kernel
    93s
  • max time network
    96s
  • platform
    windows11-21h2_x64
  • resource
    win11-20231215-en
  • resource tags

    arch:x64arch:x86image:win11-20231215-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    06-01-2024 22:40

General

  • Target

    Remcos Professional.exe

  • Size

    6.5MB

  • MD5

    1ecae7b88236fff686604c40f2ec8ef0

  • SHA1

    5338d387c764b7da0a097e4dd38c17c603e62b08

  • SHA256

    95a3f82e8e77aeb491d7faaf17c4f206763ff7eb08b8696e28ad109b67b984cf

  • SHA512

    6a396bf98181250a2a386c2ee4dbcd8a4be6e23de029d614296e6f33a66b6f6049b487ef07d70936812c31f6cce7bb1b709361b749e0b1ad3507382b26c00a5c

  • SSDEEP

    196608:CyDxS34Qskc93Uuze5VbN0Wp4ctz7Z9aVi:txb1kcWuzku84cNd

Malware Config

Signatures

  • Luca Stealer

    Info stealer written in Rust first seen in July 2022.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 2 IoCs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Remcos Professional.exe
    "C:\Users\Admin\AppData\Local\Temp\Remcos Professional.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    PID:4008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\logscx\sensfiles.zip

    Filesize

    2.0MB

    MD5

    f01898bdda6bafb67fb5677658c315c2

    SHA1

    33c16585f009767e10ba634fb6d468f938f54b17

    SHA256

    a4b4a538982e840c822a94b37852bad5f6f2b34d5fda4038f6fb4ef2368949c7

    SHA512

    1f0bffd4ee7e474e17d30b22cded8a3c54d8c608e6acfce7df178fa92064b5b72df5c5573327e09f098eb379b01178e1fc8d7d7f6b475b8e4fe1c451d3fb2dad

  • memory/4008-0-0x00007FF76B190000-0x00007FF76CAD4000-memory.dmp

    Filesize

    25.3MB

  • memory/4008-25-0x00007FF76B190000-0x00007FF76CAD4000-memory.dmp

    Filesize

    25.3MB