Analysis

  • max time kernel
    27s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 07:47

General

  • Target
    9b273ac86aaa0e87d6b77e140a370590.exe
  • Size 4.4MB
  • Sample240214-jmng4sec26
  • SHA256 62482bb7065f343a07ebff409275c49a9d4e3fdc829a7d408d6bb92e8fa704b8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • metasploit

Version
  • windows/single_exec

Signatures

  • Glupteba

    Glupteba is a modular loader written in Golang with various components.

  • Glupteba payload 12 IoCs
  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • GoLang User-Agent 4 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9b273ac86aaa0e87d6b77e140a370590.exe
    "C:\Users\Admin\AppData\Local\Temp\9b273ac86aaa0e87d6b77e140a370590.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:940
    • C:\Users\Admin\AppData\Local\Temp\9b273ac86aaa0e87d6b77e140a370590.exe
      "C:\Users\Admin\AppData\Local\Temp\9b273ac86aaa0e87d6b77e140a370590.exe"
      2⤵
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      PID:4700
      • C:\Windows\system32\cmd.exe
        C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
        3⤵
          PID:4344
          • C:\Windows\system32\netsh.exe
            netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
            4⤵
            • Modifies Windows Firewall
            PID:1348
        • C:\Windows\rss\csrss.exe
          C:\Windows\rss\csrss.exe ""
          3⤵
            PID:2168
            • C:\Windows\SYSTEM32\schtasks.exe
              schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
              4⤵
              • Creates scheduled task(s)
              PID:3824
            • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
              C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
              4⤵
                PID:4288

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              injector.exe

              • Path C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
              • Size 281KB
              • SHA256 5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
              • MD5 SHA1 SHA512 SSDEEP

              csrss.exe

              • Path C:\Windows\rss\csrss.exe
              • Size 4.4MB
              • SHA256 62482bb7065f343a07ebff409275c49a9d4e3fdc829a7d408d6bb92e8fa704b8
              • MD5 SHA1 SHA512 SSDEEP

              memory/940-2-0x0000000003BD0000-0x00000000044F6000-memory.dmp

              memory/940-3-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/940-5-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/940-6-0x0000000003BD0000-0x00000000044F6000-memory.dmp

              memory/940-1-0x0000000003790000-0x0000000003BCE000-memory.dmp

              memory/2168-40-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-38-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-15-0x0000000003A00000-0x0000000003F00000-memory.dmp

              memory/2168-16-0x0000000003F00000-0x0000000004826000-memory.dmp

              memory/2168-17-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-30-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-47-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-36-0x0000000003A00000-0x0000000003F00000-memory.dmp

              memory/2168-37-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-46-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-39-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-45-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-41-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-42-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-43-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/2168-44-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/4700-7-0x0000000003640000-0x0000000003A8A000-memory.dmp

              memory/4700-12-0x0000000000400000-0x0000000001844000-memory.dmp

              memory/4700-8-0x0000000000400000-0x0000000001844000-memory.dmp