Overview

overview

10

Static

static

1

f58d07cb81...0N.exe

windows7-x64

10

f58d07cb81...0N.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    119s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-08-2024 17:35

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General

  • Target

    f58d07cb811a42ffd79e7167cc5a6bf0N.exe

  • Size

    4.4MB

  • MD5

    f58d07cb811a42ffd79e7167cc5a6bf0

  • SHA1

    c9d832774445c2a5900794fc0855ad15325248ad

  • SHA256

    a1843d7579fde9807f37e522a36d3f6c1828eddaf5fe6c03830935e4942d14e9

  • SHA512

    b8ff26533438a3ac6c3bc45adc0e95b534ebdb20264eeb520619378c55ce13a77a80052eb81a131f28aa8e9dd4e7ba6679a7c9eb6e1d092704e42e8d70c4bb8a

  • SSDEEP

    98304:dOBvst4/mL0Zs5n+WFIynDRDKJzx+lgMPXK/L92pLEtEtfQwBDIT0a3cSF6s:A9oqmms5n+WFIYDZKtxmPXaLYx/tYwhs

Score
10/10
gluptebametasploitbackdoordiscoverydropperevasionloaderpersistenceprivilege_escalationrootkittrojan

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

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

    loaderdropperglupteba
  • Glupteba payload 16 IoCs
  • MetaSploit

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

    trojanbackdoormetasploit
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Manipulates WinMonFS driver. 1 IoCs

    Roottkits write to WinMonFS to hide directories/files from being detected.

    rootkitevasion
  • 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.

  • Drops file in Windows directory 2 IoCs
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • GoLang User-Agent 4 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
    evasionspywaretrojan
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\f58d07cb811a42ffd79e7167cc5a6bf0N.exe
    "C:\Users\Admin\AppData\Local\Temp\f58d07cb811a42ffd79e7167cc5a6bf0N.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3820
    • C:\Users\Admin\AppData\Local\Temp\f58d07cb811a42ffd79e7167cc5a6bf0N.exe
      "C:\Users\Admin\AppData\Local\Temp\f58d07cb811a42ffd79e7167cc5a6bf0N.exe"
      2⤵
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3344
      • 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⤵
        • Suspicious use of WriteProcessMemory
        PID:3660
        • 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
          • Event Triggered Execution: Netsh Helper DLL
          PID:1624
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe /51-51
        3⤵
        • Executes dropped EXE
        • Manipulates WinMonFS driver.
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2652
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3004
        • 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⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:4768
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3344 -s 1404
        3⤵
        • Program crash
        PID:3848
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3820 -s 800
      2⤵
      • Program crash
      PID:208
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3820 -ip 3820
    1⤵
      PID:3512
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3344 -ip 3344
      1⤵
        PID:4392

      Network

      MITRE ATT&CK Enterprise v15

      Reconnaissance

      Resource Development

      Initial Access

      Execution

      Scheduled Task/Job

      1
      T1053

      Scheduled Task

      1
      T1053.005

      Persistence

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Create or Modify System Process

      1
      T1543

      Windows Service

      1
      T1543.003

      Event Triggered Execution

      1
      T1546

      Netsh Helper DLL

      1
      T1546.007

      Scheduled Task/Job

      1
      T1053

      Scheduled Task

      1
      T1053.005

      Privilege Escalation

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Create or Modify System Process

      1
      T1543

      Windows Service

      1
      T1543.003

      Event Triggered Execution

      1
      T1546

      Netsh Helper DLL

      1
      T1546.007

      Scheduled Task/Job

      1
      T1053

      Scheduled Task

      1
      T1053.005

      Defense Evasion

      Impair Defenses

      1
      T1562

      Disable or Modify System Firewall

      1
      T1562.004

      Modify Registry

      2
      T1112

      Subvert Trust Controls

      1
      T1553

      Install Root Certificate

      1
      T1553.004

      Credential Access

      Discovery

      Query Registry

      2
      T1012

      System Information Discovery

      1
      T1082

      System Location Discovery

      1
      T1614

      System Language Discovery

      1
      T1614.001

      Lateral Movement

      Collection

      Command and Control

      Exfiltration

      Impact

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
        Filesize

        281KB

        MD5

        d98e33b66343e7c96158444127a117f6

        SHA1

        bb716c5509a2bf345c6c1152f6e3e1452d39d50d

        SHA256

        5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

        SHA512

        705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

        Download Submit

      • C:\Windows\rss\csrss.exe
        Filesize

        4.4MB

        MD5

        f58d07cb811a42ffd79e7167cc5a6bf0

        SHA1

        c9d832774445c2a5900794fc0855ad15325248ad

        SHA256

        a1843d7579fde9807f37e522a36d3f6c1828eddaf5fe6c03830935e4942d14e9

        SHA512

        b8ff26533438a3ac6c3bc45adc0e95b534ebdb20264eeb520619378c55ce13a77a80052eb81a131f28aa8e9dd4e7ba6679a7c9eb6e1d092704e42e8d70c4bb8a

        Download Submit

      • memory/2652-26-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/2652-27-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/2652-30-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/2652-29-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/2652-16-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/2652-28-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/2652-22-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/2652-23-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/2652-24-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/2652-25-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/3344-7-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/3344-8-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/3344-15-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/3820-3-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/3820-1-0x00000000010D0000-0x000000000151A000-memory.dmp

        Filesize

        4.3MB

        Download

      • memory/3820-2-0x0000000001520000-0x0000000001E46000-memory.dmp

        Filesize

        9.1MB

        Download

      • memory/3820-5-0x0000000000400000-0x0000000000D41000-memory.dmp

        Filesize

        9.3MB

        Download

      • memory/3820-6-0x0000000001520000-0x0000000001E46000-memory.dmp

        Filesize

        9.1MB

        Download