Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03/10/2024, 16:04

General

  • Target
    rpedido-002297.exe
  • Size 555KB
  • Sample241003-th2jaatfll
  • 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 7 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 6 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:1868
    • 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:1336

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        Gaulin.ini

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

        System.dll

        • Path \Users\Admin\AppData\Local\Temp\nst7CEF.tmp\System.dll
        • Size 11KB
        • SHA256 f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37
        • MD5 SHA1 SHA512 SSDEEP

        memory/1336-308-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1336-318-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1336-312-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1336-310-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1336-283-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1336-284-0x0000000077100000-0x00000000772A9000-memory.dmp

        memory/1336-311-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1336-306-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1336-309-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1868-281-0x00000000037A0000-0x00000000041B8000-memory.dmp

        memory/1868-307-0x00000000037A0000-0x00000000041B8000-memory.dmp

        memory/1868-282-0x0000000077100000-0x00000000772A9000-memory.dmp

        memory/1868-280-0x0000000077101000-0x0000000077202000-memory.dmp

        memory/1868-279-0x00000000037A0000-0x00000000041B8000-memory.dmp