Analysis

  • max time kernel
    149s
  • max time network
    158s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    28/05/2026, 14:12

General

  • Target
    046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe
  • Size 660KB
  • Sample260528-rhvdvsav5k
  • SHA256 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Windows directory 1 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.

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe
    "C:\Users\Admin\AppData\Local\Temp\046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:5940
    • C:\Users\Admin\AppData\Local\Temp\046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe
      "C:\Users\Admin\AppData\Local\Temp\046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:2640

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsn23AC.tmp\System.dll
        • Size 11KB
        • SHA256 a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2640-14-0x0000000000400000-0x0000000001717000-memory.dmp

        memory/2640-16-0x0000000001720000-0x0000000004901000-memory.dmp

        memory/2640-17-0x0000000000400000-0x0000000001717000-memory.dmp

        memory/2640-18-0x0000000001720000-0x0000000004901000-memory.dmp

        memory/5940-10-0x0000000005680000-0x0000000008861000-memory.dmp

        memory/5940-11-0x0000000005680000-0x0000000008861000-memory.dmp

        memory/5940-12-0x00000000744E4000-0x00000000744E5000-memory.dmp

        memory/5940-15-0x0000000005680000-0x0000000008861000-memory.dmp