Analysis

  • max time kernel
    145s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/06/2024, 01:12

General

  • Target
    27062024-322copy.exe
  • Size 873KB
  • Sample240628-bkpy6avglp
  • SHA256 76f267de8fd5fa4744fb8294ee9a4765afeba03b36244527feca60a32df155af
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\27062024-322copy.exe
    "C:\Users\Admin\AppData\Local\Temp\27062024-322copy.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4564
    • C:\Users\Admin\AppData\Local\Temp\27062024-322copy.exe
      "C:\Users\Admin\AppData\Local\Temp\27062024-322copy.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:1516

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsw7E3A.tmp\System.dll
        • Size 11KB
        • SHA256 904fd5481d72f4e03b01a455f848dedd095d0fb17e33608e0d849f5196fb6ff8
        • MD5 SHA1 SHA512 SSDEEP

        memory/1516-27-0x0000000001700000-0x0000000003174000-memory.dmp

        memory/1516-29-0x00000000778E8000-0x00000000778E9000-memory.dmp

        memory/1516-30-0x0000000077905000-0x0000000077906000-memory.dmp

        memory/1516-31-0x00000000004A0000-0x00000000016F4000-memory.dmp

        memory/1516-32-0x0000000001700000-0x0000000003174000-memory.dmp

        memory/1516-34-0x0000000077861000-0x0000000077981000-memory.dmp

        memory/4564-24-0x0000000004A40000-0x00000000064B4000-memory.dmp

        memory/4564-25-0x0000000077861000-0x0000000077981000-memory.dmp

        memory/4564-26-0x0000000010004000-0x0000000010005000-memory.dmp

        memory/4564-28-0x0000000004A40000-0x00000000064B4000-memory.dmp

        memory/4564-39-0x0000000004A40000-0x00000000064B4000-memory.dmp