Analysis

  • max time kernel
    119s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/09/2024, 13:02

General

  • Target
    16c111672e8f0becdc8ae2e860594f90N.exe
  • Size 655KB
  • Sample240902-qaah2s1amp
  • SHA256 82121bc438a17d43f7c48b6b1744d74fdc5a4a5f59fb3aea87674e306c62278c
  • MD5 SHA1 SHA512 SSDEEP

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
  • 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 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\16c111672e8f0becdc8ae2e860594f90N.exe
    "C:\Users\Admin\AppData\Local\Temp\16c111672e8f0becdc8ae2e860594f90N.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4608
    • C:\Users\Admin\AppData\Local\Temp\16c111672e8f0becdc8ae2e860594f90N.exe
      "C:\Users\Admin\AppData\Local\Temp\16c111672e8f0becdc8ae2e860594f90N.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:1748

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nssA78C.tmp\System.dll
        • Size 11KB
        • SHA256 852047023ba0cae91c7a43365878613cfb4e64e36ff98c460e113d5088d68ef5
        • MD5 SHA1 SHA512 SSDEEP

        memory/1748-17-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1748-18-0x0000000001660000-0x0000000003D8A000-memory.dmp

        memory/1748-19-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1748-20-0x0000000001660000-0x0000000003D8A000-memory.dmp

        memory/4608-13-0x00000000049C0000-0x00000000070EA000-memory.dmp

        memory/4608-14-0x0000000077031000-0x0000000077151000-memory.dmp

        memory/4608-15-0x00000000049C0000-0x00000000070EA000-memory.dmp

        memory/4608-16-0x0000000010004000-0x0000000010005000-memory.dmp

        memory/4608-26-0x00000000049C0000-0x00000000070EA000-memory.dmp