Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    18/05/2024, 10:33

General

  • Target
    096d713534ca21ee4570ca48be0d00d2d49a057466c295885ae1710defed168f.bin.bin.exe
  • Size 4.1MB
  • Sample240518-mljdjsfb73
  • SHA256 096d713534ca21ee4570ca48be0d00d2d49a057466c295885ae1710defed168f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 20 IoCs
  • Windows security bypass 2 TTPs 7 IoCs
  • Modifies boot configuration data using bcdedit 14 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Possible attempt to disable PatchGuard 2 TTPs

    Rootkits can use kernel patching to embed themselves in an operating system.

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 13 IoCs
  • UPX packed file 7 IoCs

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

  • Windows security modification 2 TTPs 7 IoCs
  • 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 WinMon driver. 1 IoCs

    Roottkits write to WinMon to hide PIDs from being detected.

  • Manipulates WinMonFS driver. 1 IoCs

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

  • 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 5 IoCs
  • Launches sc.exe 1 IoCs

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

  • 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
  • Modifies system certificate store 2 TTPs 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 64 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\096d713534ca21ee4570ca48be0d00d2d49a057466c295885ae1710defed168f.bin.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\096d713534ca21ee4570ca48be0d00d2d49a057466c295885ae1710defed168f.bin.bin.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1224
    • C:\Users\Admin\AppData\Local\Temp\096d713534ca21ee4570ca48be0d00d2d49a057466c295885ae1710defed168f.bin.bin.exe
      "C:\Users\Admin\AppData\Local\Temp\096d713534ca21ee4570ca48be0d00d2d49a057466c295885ae1710defed168f.bin.bin.exe"
      2⤵
      • Windows security bypass
      • Loads dropped DLL
      • Windows security modification
      • 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:2704
      • 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:2784
        • 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
          • Modifies data under HKEY_USERS
          PID:2756
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Manipulates WinMon driver.
        • Manipulates WinMonFS driver.
        • Drops file in Windows directory
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2544
        • 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:1932
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1960
          • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
            "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies system certificate store
            • Suspicious use of WriteProcessMemory
            PID:1708
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -create {71A3C7FC-F751-4982-AEC1-E958357E6813} -d "Windows Fast Mode" -application OSLOADER
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2064
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} device partition=C:
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2236
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} osdevice partition=C:
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:988
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} systemroot \Windows
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:888
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} path \Windows\system32\osloader.exe
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2452
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} kernel ntkrnlmp.exe
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2464
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} recoveryenabled 0
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:1584
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} nx OptIn
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2080
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} nointegritychecks 1
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:1312
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} inherit {bootloadersettings}
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2780
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -displayorder {71A3C7FC-F751-4982-AEC1-E958357E6813} -addlast
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2720
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -timeout 0
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:3008
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -default {71A3C7FC-F751-4982-AEC1-E958357E6813}
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2624
          • 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:2428
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\Sysnative\bcdedit.exe /v
            4⤵
            • Modifies boot configuration data using bcdedit
            PID:2596
          • C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            4⤵
            • Executes dropped EXE
            PID:2680
          • 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:2672
          • C:\Windows\windefender.exe
            "C:\Windows\windefender.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1952
            • 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⤵
                PID:1284
                • 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:1568
      • C:\Windows\system32\makecab.exe
        "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240518103314.log C:\Windows\Logs\CBS\CbsPersist_20240518103314.cab
        1⤵
        • Drops file in Windows directory
        PID:2608
      • C:\Windows\windefender.exe
        C:\Windows\windefender.exe
        1⤵
        • Executes dropped EXE
        • Modifies data under HKEY_USERS
        PID:1724

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            Cab6A88.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\Cab6A88.tmp
            • Size 68KB
            • SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
            • MD5 SHA1 SHA512 SSDEEP

            download.error

            • Path C:\Users\Admin\AppData\Local\Temp\Symbols\ntkrnlmp.pdb\AAF33CF37E194E98957768CF9C02DE8E2\download.error
            • Size 8.3MB
            • SHA256 3a72dbedc490773f90e241c8b3b839383a63ce36426a4f330a0f754b14b4d23e
            • MD5 SHA1 SHA512 SSDEEP

            download.error

            • Path C:\Users\Admin\AppData\Local\Temp\Symbols\winload_prod.pdb\768283CA443847FB8822F9DB1F36ECC51\download.error
            • Size 492KB
            • SHA256 feb122b7916a1e62a7a6ae8d25ea48a2efc86f6e6384f5526e18ffbfc5f5ff71
            • MD5 SHA1 SHA512 SSDEEP

            Tar6AF8.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\Tar6AF8.tmp
            • Size 177KB
            • SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
            • MD5 SHA1 SHA512 SSDEEP

            injector.exe

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

            ntkrnlmp.exe

            • Path C:\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
            • Size 5.3MB
            • SHA256 c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1
            • MD5 SHA1 SHA512 SSDEEP

            osloader.exe

            • Path C:\Users\Admin\AppData\Local\Temp\osloader.exe
            • Size 591KB
            • SHA256 b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4
            • MD5 SHA1 SHA512 SSDEEP

            windefender.exe

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

            dsefix.exe

            • Path \Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            • Size 94KB
            • SHA256 414035cc96d8bcc87ed173852a839ffbb45882a98c7a6f7b821e1668891deef0
            • MD5 SHA1 SHA512 SSDEEP

            patch.exe

            • Path \Users\Admin\AppData\Local\Temp\csrss\patch.exe
            • Size 1.7MB
            • SHA256 f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3
            • MD5 SHA1 SHA512 SSDEEP

            dbghelp.dll

            • Path \Users\Admin\AppData\Local\Temp\dbghelp.dll
            • Size 1.5MB
            • SHA256 6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026
            • MD5 SHA1 SHA512 SSDEEP

            symsrv.dll

            • Path \Users\Admin\AppData\Local\Temp\symsrv.dll
            • Size 163KB
            • SHA256 e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f
            • MD5 SHA1 SHA512 SSDEEP

            csrss.exe

            • Path \Windows\rss\csrss.exe
            • Size 4.1MB
            • SHA256 096d713534ca21ee4570ca48be0d00d2d49a057466c295885ae1710defed168f
            • MD5 SHA1 SHA512 SSDEEP

            memory/1224-6-0x0000000004970000-0x000000000525B000-memory.dmp

            memory/1224-8-0x0000000000400000-0x0000000000D1C000-memory.dmp

            memory/1224-0-0x0000000004570000-0x0000000004968000-memory.dmp

            memory/1224-1-0x0000000004570000-0x0000000004968000-memory.dmp

            memory/1224-4-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/1224-7-0x0000000004570000-0x0000000004968000-memory.dmp

            memory/1224-2-0x0000000004970000-0x000000000525B000-memory.dmp

            memory/1224-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

            memory/1708-39-0x0000000140000000-0x00000001405E8000-memory.dmp

            memory/1708-25-0x0000000140000000-0x00000001405E8000-memory.dmp

            memory/1724-157-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1724-150-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1724-153-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1724-163-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1952-147-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1952-151-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/2544-18-0x0000000004640000-0x0000000004A38000-memory.dmp

            memory/2544-154-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-113-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-112-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-108-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-152-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-96-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-166-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-156-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-143-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-158-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-160-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-162-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-168-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2544-164-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2704-17-0x0000000000400000-0x0000000002B0D000-memory.dmp

            memory/2704-5-0x0000000004440000-0x0000000004838000-memory.dmp