Analysis

  • max time kernel
    94s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/10/2024, 16:01

General

  • Target
    rpedido-002297.exe
  • Size 555KB
  • Sample241003-tf7mhstenk
  • SHA256 643a505fefdbf1f0fa9915550a75b2b739aba1683858f92f332c9585c838690d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 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: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\rpedido-002297.exe
    "C:\Users\Admin\AppData\Local\Temp\rpedido-002297.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:3268
    • C:\Users\Admin\AppData\Local\Temp\rpedido-002297.exe
      "C:\Users\Admin\AppData\Local\Temp\rpedido-002297.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1352

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsjCF39.tmp\System.dll
        • Size 11KB
        • SHA256 f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37
        • MD5 SHA1 SHA512 SSDEEP

        Gaulin.ini

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Gaulin.ini
        • Size 37B
        • SHA256 b4543e8ab4997934d2edc7de8a76a24b7c2ccb641212ae3b9b17fe05b71d3e87
        • MD5 SHA1 SHA512

        memory/1352-300-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1352-302-0x0000000000401000-0x0000000000404000-memory.dmp

        memory/1352-315-0x0000000001660000-0x0000000002078000-memory.dmp

        memory/1352-314-0x0000000000401000-0x0000000000404000-memory.dmp

        memory/1352-282-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1352-283-0x0000000001660000-0x0000000002078000-memory.dmp

        memory/1352-313-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1352-285-0x0000000077BD5000-0x0000000077BD6000-memory.dmp

        memory/1352-298-0x0000000001660000-0x0000000002078000-memory.dmp

        memory/1352-299-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1352-310-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1352-284-0x0000000077BB8000-0x0000000077BB9000-memory.dmp

        memory/1352-306-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1352-303-0x0000000077B31000-0x0000000077C51000-memory.dmp

        memory/1352-304-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1352-305-0x0000000000401000-0x0000000000404000-memory.dmp

        memory/1352-309-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1352-307-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1352-308-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/3268-278-0x0000000003230000-0x0000000003C48000-memory.dmp

        memory/3268-279-0x0000000077B31000-0x0000000077C51000-memory.dmp

        memory/3268-301-0x0000000003230000-0x0000000003C48000-memory.dmp

        memory/3268-280-0x0000000003230000-0x0000000003C48000-memory.dmp

        memory/3268-281-0x0000000010004000-0x0000000010005000-memory.dmp