Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16/05/2024, 12:27

General

  • Target
    4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
  • Size 4.1MB
  • Sample240516-pmxzfada44
  • SHA256 4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 18 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 4 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Manipulates WinMonFS driver. 1 IoCs

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

  • Drops file in System32 directory 6 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.

  • Drops file in Windows directory 4 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

    Using powershell.exe command.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of WriteProcessMemory 36 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
    "C:\Users\Admin\AppData\Local\Temp\4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4820
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3288
    • C:\Users\Admin\AppData\Local\Temp\4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
      "C:\Users\Admin\AppData\Local\Temp\4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe"
      2⤵
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1620
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3152
      • 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:2952
        • 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:3112
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3392
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4912
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2448
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Modifies data under HKEY_USERS
          PID:1868
        • 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:2000
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4708
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Command and Scripting Interpreter: PowerShell
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4392
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Command and Scripting Interpreter: PowerShell
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1888
          • 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:1744
          • 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:2636
          • C:\Windows\windefender.exe
            "C:\Windows\windefender.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4860
            • C:\Windows\SysWOW64\cmd.exe
              cmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:2340
              • C:\Windows\SysWOW64\sc.exe
                sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
                6⤵
                • Launches sc.exe
                • Suspicious use of AdjustPrivilegeToken
                PID:996
    • C:\Windows\windefender.exe
      C:\Windows\windefender.exe
      1⤵
      • Executes dropped EXE
      • Modifies data under HKEY_USERS
      PID:4728

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          __PSScriptPolicyTest_31vcelo3.214.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_31vcelo3.214.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          injector.exe

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

          powershell.exe.log

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
          • Size 2KB
          • SHA256 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
          • MD5 SHA1 SHA512

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 3cc3075849acd3277eca1bdb5c071d84bd69d866839b239c458b800e31543969
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 33670d67e4242debb47441ef6224d585f6bc27891b6d0275e608ba7b0106fd89
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 0ee4710db02e85ffd5549efc5fbed327c7d311752ff578ab604d98d50517aa84
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 3843241d5fb698c5f91847a9821c3df0e9e687ded3cd88835a164b4a3bcb0cff
          • MD5 SHA1 SHA512 SSDEEP

          csrss.exe

          • Path C:\Windows\rss\csrss.exe
          • Size 4.1MB
          • SHA256 4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059
          • MD5 SHA1 SHA512 SSDEEP

          windefender.exe

          • Path C:\Windows\windefender.exe
          • Size 2.0MB
          • SHA256 166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
          • MD5 SHA1 SHA512 SSDEEP

          memory/1620-52-0x0000000002A20000-0x0000000002E24000-memory.dmp

          memory/1620-126-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/1620-100-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/1888-163-0x0000000006310000-0x0000000006667000-memory.dmp

          memory/1888-165-0x0000000070B40000-0x0000000070B8C000-memory.dmp

          memory/1888-166-0x0000000070CE0000-0x0000000071037000-memory.dmp

          memory/2448-207-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-182-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-193-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-195-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-198-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-201-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-204-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-210-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-213-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-216-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-219-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/2448-222-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/3152-77-0x0000000007640000-0x0000000007655000-memory.dmp

          memory/3152-53-0x0000000005B60000-0x0000000005EB7000-memory.dmp

          memory/3152-73-0x00000000075D0000-0x00000000075E1000-memory.dmp

          memory/3152-72-0x0000000007290000-0x0000000007334000-memory.dmp

          memory/3152-63-0x0000000070E70000-0x00000000711C7000-memory.dmp

          memory/3152-62-0x0000000070C20000-0x0000000070C6C000-memory.dmp

          memory/3288-8-0x00000000749B0000-0x0000000075161000-memory.dmp

          memory/3288-26-0x0000000070DC0000-0x0000000071117000-memory.dmp

          memory/3288-50-0x00000000749B0000-0x0000000075161000-memory.dmp

          memory/3288-47-0x0000000007750000-0x0000000007758000-memory.dmp

          memory/3288-46-0x0000000007730000-0x000000000774A000-memory.dmp

          memory/3288-45-0x00000000076E0000-0x00000000076F5000-memory.dmp

          memory/3288-4-0x00000000749BE000-0x00000000749BF000-memory.dmp

          memory/3288-5-0x0000000002BB0000-0x0000000002BE6000-memory.dmp

          memory/3288-44-0x00000000076D0000-0x00000000076DE000-memory.dmp

          memory/3288-7-0x00000000749B0000-0x0000000075161000-memory.dmp

          memory/3288-42-0x0000000007770000-0x0000000007806000-memory.dmp

          memory/3288-41-0x0000000007660000-0x000000000766A000-memory.dmp

          memory/3288-20-0x0000000005B50000-0x0000000005EA7000-memory.dmp

          memory/3288-10-0x0000000005A70000-0x0000000005AD6000-memory.dmp

          memory/3288-39-0x0000000007C60000-0x00000000082DA000-memory.dmp

          memory/3288-6-0x00000000052D0000-0x00000000058FA000-memory.dmp

          memory/3288-40-0x0000000007620000-0x000000000763A000-memory.dmp

          memory/3288-11-0x0000000005AE0000-0x0000000005B46000-memory.dmp

          memory/3288-9-0x00000000052A0000-0x00000000052C2000-memory.dmp

          memory/3288-38-0x00000000749B0000-0x0000000075161000-memory.dmp

          memory/3288-35-0x00000000074D0000-0x00000000074EE000-memory.dmp

          memory/3288-21-0x0000000006040000-0x000000000605E000-memory.dmp

          memory/3288-37-0x00000000074F0000-0x0000000007594000-memory.dmp

          memory/3288-22-0x00000000060E0000-0x000000000612C000-memory.dmp

          memory/3288-23-0x00000000065E0000-0x0000000006626000-memory.dmp

          memory/3288-24-0x0000000007490000-0x00000000074C4000-memory.dmp

          memory/3288-43-0x0000000007680000-0x0000000007691000-memory.dmp

          memory/3288-25-0x0000000070C20000-0x0000000070C6C000-memory.dmp

          memory/3288-36-0x00000000749B0000-0x0000000075161000-memory.dmp

          memory/3392-91-0x0000000070DC0000-0x0000000071117000-memory.dmp

          memory/3392-90-0x0000000070C20000-0x0000000070C6C000-memory.dmp

          memory/4392-153-0x00000000064C0000-0x00000000064D5000-memory.dmp

          memory/4392-152-0x0000000007C70000-0x0000000007C81000-memory.dmp

          memory/4392-151-0x0000000007950000-0x00000000079F4000-memory.dmp

          memory/4392-142-0x0000000070D90000-0x00000000710E7000-memory.dmp

          memory/4392-141-0x0000000070B40000-0x0000000070B8C000-memory.dmp

          memory/4392-140-0x0000000006BF0000-0x0000000006C3C000-memory.dmp

          memory/4392-138-0x0000000006140000-0x0000000006497000-memory.dmp

          memory/4728-202-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/4728-190-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/4728-196-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/4820-76-0x0000000002E30000-0x000000000371B000-memory.dmp

          memory/4820-1-0x0000000002A20000-0x0000000002E23000-memory.dmp

          memory/4820-75-0x0000000002A20000-0x0000000002E23000-memory.dmp

          memory/4820-74-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/4820-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/4820-2-0x0000000002E30000-0x000000000371B000-memory.dmp

          memory/4860-192-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/4860-187-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/4912-113-0x0000000070E50000-0x00000000711A7000-memory.dmp

          memory/4912-112-0x0000000070C20000-0x0000000070C6C000-memory.dmp

          memory/4912-110-0x0000000005830000-0x0000000005B87000-memory.dmp