Overview

overview

10

Static

static

3

631e3275d1...66.exe

windows10-2004-x64

10

631e3275d1...66.exe

windows11-ltsc_2024-x64

7

$PLUGINSDI...em.dll

windows10-2004-x64

3

$PLUGINSDI...em.dll

windows11-ltsc_2024-x64

3

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    10/08/2026, 20:17

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General

  • Target
    631e3275d1830100cc76d3dda6b82aa9bdaa3a620ff682d00e6191e3830b3166.exe
  • Size 403KB
  • Sample260810-y2w55axeja
  • SHA256 631e3275d1830100cc76d3dda6b82aa9bdaa3a620ff682d00e6191e3830b3166
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverydownloaderguloader

Malware Config

Signatures

  • Family: Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

    downloaderguloader
  • Loads dropped DLL 2 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\631e3275d1830100cc76d3dda6b82aa9bdaa3a620ff682d00e6191e3830b3166.exe
    "C:\Users\Admin\AppData\Local\Temp\631e3275d1830100cc76d3dda6b82aa9bdaa3a620ff682d00e6191e3830b3166.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2564
    • C:\Users\Admin\AppData\Local\Temp\631e3275d1830100cc76d3dda6b82aa9bdaa3a620ff682d00e6191e3830b3166.exe
      "C:\Users\Admin\AppData\Local\Temp\631e3275d1830100cc76d3dda6b82aa9bdaa3a620ff682d00e6191e3830b3166.exe"
      2⤵
        PID:2036
      • C:\Users\Admin\AppData\Local\Temp\631e3275d1830100cc76d3dda6b82aa9bdaa3a620ff682d00e6191e3830b3166.exe
        "C:\Users\Admin\AppData\Local\Temp\631e3275d1830100cc76d3dda6b82aa9bdaa3a620ff682d00e6191e3830b3166.exe"
        2⤵
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3908
        • C:\Users\Admin\AppData\Local\Temp\631e3275d1830100cc76d3dda6b82aa9bdaa3a620ff682d00e6191e3830b3166.exe
          "C:\Users\Admin\AppData\Local\Temp\631e3275d1830100cc76d3dda6b82aa9bdaa3a620ff682d00e6191e3830b3166.exe"
          3⤵
            PID:1408

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            System.dll
            • Path C:\Users\Admin\AppData\Local\Temp\nss89ED.tmp\System.dll
            • Size 11KB
            • SHA256 bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            afsnitsnummerering.lnk
            • Path C:\Users\Admin\afsnitsnummerering.lnk
            • Size 1KB
            • SHA256 0fd6ba1ec5c2c62e4858a226ad5655d88d09e963d4c2785b16ec80dffb8fa52d
            • MD5 SHA1 SHA512 TLSH
            Submit Download

            memory/2564-34-0x0000000002D10000-0x0000000005FE5000-memory.dmp
            Download

            memory/2564-35-0x0000000010004000-0x0000000010005000-memory.dmp
            Download

            memory/2564-36-0x0000000002D10000-0x0000000005FE5000-memory.dmp
            Download

            memory/3908-39-0x0000000000830000-0x0000000001A84000-memory.dmp
            Download