Overview

overview

10

Static

static

1

3899c56472...0N.exe

windows7-x64

10

3899c56472...0N.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    119s
  • max time network
    110s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-08-2024 10:15

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General

  • Target

    3899c56472bc945cc49571ddce5b41e0N.exe

  • Size

    4.4MB

  • MD5

    3899c56472bc945cc49571ddce5b41e0

  • SHA1

    651a83a68860e7008898777fc7b25f974ffa0105

  • SHA256

    9f8ddedb951a7a90a8f21472401bdb5d82f193ec54408b6eac3d53d6c4e1861f

  • SHA512

    7bd4457fed01de10328af5d8c4fd534e7e441680099604bb4f58bcd487d6e71cf580ac1352775a21f07245fdc56a44d0f39d5b6f7b2896053bb62926cb12e154

  • SSDEEP

    98304:W1Dlu5DiNcdvSnUxENZU9iIY3tHzlCAq7F0so:2DluNwcQnZUsB3hzlkpTo

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 17 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 1 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\3899c56472bc945cc49571ddce5b41e0N.exe
    "C:\Users\Admin\AppData\Local\Temp\3899c56472bc945cc49571ddce5b41e0N.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4464
    • C:\Users\Admin\AppData\Local\Temp\3899c56472bc945cc49571ddce5b41e0N.exe
      "C:\Users\Admin\AppData\Local\Temp\3899c56472bc945cc49571ddce5b41e0N.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:5116
      • 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:3116
        • 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:3596
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe /81-81
        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:1648
        • 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:3936
        • 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:4468
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4464 -s 692
      2⤵
      • Program crash
      PID:916
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4464 -ip 4464
    1⤵
      PID:4760

    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

      3899c56472bc945cc49571ddce5b41e0

      SHA1

      651a83a68860e7008898777fc7b25f974ffa0105

      SHA256

      9f8ddedb951a7a90a8f21472401bdb5d82f193ec54408b6eac3d53d6c4e1861f

      SHA512

      7bd4457fed01de10328af5d8c4fd534e7e441680099604bb4f58bcd487d6e71cf580ac1352775a21f07245fdc56a44d0f39d5b6f7b2896053bb62926cb12e154

      Download Submit

    • memory/1648-25-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/1648-23-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/1648-29-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/1648-28-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/1648-27-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/1648-26-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/1648-14-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/1648-24-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/1648-20-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/1648-21-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/1648-22-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/4464-1-0x0000000004DB0000-0x00000000051F8000-memory.dmp

      Filesize

      4.3MB

      Download

    • memory/4464-2-0x0000000005200000-0x0000000005B26000-memory.dmp

      Filesize

      9.1MB

      Download

    • memory/4464-6-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4464-3-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4464-5-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download

    • memory/4464-7-0x0000000005200000-0x0000000005B26000-memory.dmp

      Filesize

      9.1MB

      Download

    • memory/5116-11-0x0000000000400000-0x00000000047F2000-memory.dmp

      Filesize

      67.9MB

      Download