Analysis

  • max time kernel
    293s
  • max time network
    299s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    07/11/2024, 00:45

General

  • Target
    Anfrage_244384.exe
  • Size 1.2MB
  • Sample241107-a326rssbpj
  • SHA256 eda014e3b658bfbbfd141c1459a3414d9ee8b7c139a3976fe732141fa9cf3f80
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 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.

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe
    "C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3052
    • C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe
      "C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:2724

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        System.dll

        • Path \Users\Admin\AppData\Local\Temp\nsy2897.tmp\System.dll
        • Size 11KB
        • SHA256 fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
        • MD5 SHA1 SHA512 SSDEEP

        memory/2724-22-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/2724-23-0x00000000778C0000-0x0000000077A69000-memory.dmp

        memory/2724-25-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/3052-18-0x00000000028D0000-0x000000000555E000-memory.dmp

        memory/3052-19-0x00000000028D0000-0x000000000555E000-memory.dmp

        memory/3052-21-0x00000000778C0000-0x0000000077A69000-memory.dmp

        memory/3052-20-0x00000000778C1000-0x00000000779C2000-memory.dmp

        memory/3052-24-0x00000000028D0000-0x000000000555E000-memory.dmp