Analysis

  • max time kernel
    149s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    03/03/2024, 06:40

General

  • Target
    85276523fa7614812ace42681f304179.exe
  • Size 4.1MB
  • Sample240303-he7eksfb25
  • SHA256 aa6b00a8870f3ed1ee8b64aa5eaff7cd2e080218ceba9299b1b5279ce388d0b4
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 22 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\85276523fa7614812ace42681f304179.exe
    "C:\Users\Admin\AppData\Local\Temp\85276523fa7614812ace42681f304179.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2220
    • C:\Users\Admin\AppData\Local\Temp\85276523fa7614812ace42681f304179.exe
      "C:\Users\Admin\AppData\Local\Temp\85276523fa7614812ace42681f304179.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:2620
      • 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:2396
        • 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:2500
      • 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:2824
        • 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:1540
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1604
          • 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:1856
            • 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:896
            • 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:1136
            • 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:2728
            • 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:1984
            • 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:2296
            • 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:572
            • 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:2852
            • 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:3028
            • 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:1676
            • 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:2856
            • 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:1928
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -timeout 0
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:980
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -default {71A3C7FC-F751-4982-AEC1-E958357E6813}
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:1876
          • 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:2016
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\Sysnative\bcdedit.exe /v
            4⤵
            • Modifies boot configuration data using bcdedit
            PID:1528
          • C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            4⤵
            • Executes dropped EXE
            PID:2528
          • 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:2500
          • C:\Windows\windefender.exe
            "C:\Windows\windefender.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1324
            • 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:328
                • 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:240
      • C:\Windows\system32\makecab.exe
        "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240303064006.log C:\Windows\Logs\CBS\CbsPersist_20240303064006.cab
        1⤵
        • Drops file in Windows directory
        PID:2656
      • C:\Windows\windefender.exe
        C:\Windows\windefender.exe
        1⤵
        • Executes dropped EXE
        • Modifies data under HKEY_USERS
        PID:1752

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            94308059B57B3142E455B38A6EB92015

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
            • Size 67KB
            • SHA256 b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78
            • MD5 SHA1 SHA512 SSDEEP

            Cab1F84.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\Cab1F84.tmp
            • Size 65KB
            • SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
            • 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

            Tar2121.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\Tar2121.tmp
            • Size 175KB
            • SHA256 a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22
            • MD5 SHA1 SHA512 SSDEEP

            dsefix.exe

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

            patch.exe

            • Path C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
            • Size 1.2MB
            • SHA256 5336fe297c2d1e979b8170c8acce45a6a1eafc7f18bbb4abde09a807c406aa84
            • MD5 SHA1 SHA512 SSDEEP

            ntkrnlmp.exe

            • Path C:\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
            • Size 511KB
            • SHA256 031e917d67c9c0e9570236b6079587f509b2d27e1a705d1522bb87ae897dd764
            • MD5 SHA1 SHA512 SSDEEP

            csrss.exe

            • Path C:\Windows\rss\csrss.exe
            • Size 2.9MB
            • SHA256 6ee35bc8e9516993c7c2cacc298af5288708fc6768bcb4ef8efabf31de28e378
            • MD5 SHA1 SHA512 SSDEEP

            csrss.exe

            • Path C:\Windows\rss\csrss.exe
            • Size 3.6MB
            • SHA256 9eb82ec2bd9ab930593522319c1c0e99a2f916273caae028596e42e10eb84851
            • MD5 SHA1 SHA512 SSDEEP

            csrss.exe

            • Path C:\Windows\rss\csrss.exe
            • Size 2.8MB
            • SHA256 2c394bc65484e44d95a74dbfa834f5f141c24d3463ee47f5198242a6f52ddec8
            • MD5 SHA1 SHA512 SSDEEP

            windefender.exe

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

            windefender.exe

            • Path C:\Windows\windefender.exe
            • Size 1024KB
            • SHA256 d928b19ac1182464a785034058e6b48e6f0dede072b24819511a247a62ed1c0e
            • MD5 SHA1 SHA512 SSDEEP

            injector.exe

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

            patch.exe

            • Path \Users\Admin\AppData\Local\Temp\csrss\patch.exe
            • Size 928KB
            • SHA256 9375a199eabbd30f110150d51bffbf7ab5b7215e83e140207e6a26e1958a4943
            • MD5 SHA1 SHA512 SSDEEP

            dbghelp.dll

            • Path \Users\Admin\AppData\Local\Temp\dbghelp.dll
            • Size 623KB
            • SHA256 83e7396105907714b56632e5bb20de0b470bbf013ecb8e878a0bbf6488f0bd07
            • MD5 SHA1 SHA512 SSDEEP

            ntkrnlmp.exe

            • Path \Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
            • Size 506KB
            • SHA256 e58818f459e062a0cd45413a4980aaad2181d4bed65a93e66b0dc627d228c22b
            • MD5 SHA1 SHA512 SSDEEP

            ntkrnlmp.exe

            • Path \Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
            • Size 506KB
            • SHA256 819a52e074ef4147798f3ec595e02edbc4cdeb7a6c45833d9fa06de1cd88a1b5
            • MD5 SHA1 SHA512 SSDEEP

            ntkrnlmp.exe

            • Path \Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
            • Size 516KB
            • SHA256 f4c5bee5f14129f3e29a33d98c1396d1a39d3ed3d76b2c35a12f98b1749c74dd
            • MD5 SHA1 SHA512 SSDEEP

            osloader.exe

            • Path \Users\Admin\AppData\Local\Temp\osloader.exe
            • Size 591KB
            • SHA256 b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4
            • 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 3.1MB
            • SHA256 8a7676ed5191ab655b908064f91dd4a6e10fdfa64776036ba65e4554c154c9d7
            • MD5 SHA1 SHA512 SSDEEP

            csrss.exe

            • Path \Windows\rss\csrss.exe
            • Size 3.5MB
            • SHA256 92031bac12eafc1a862b39742518af35864dee376f0928510a42eff02d70d23e
            • MD5 SHA1 SHA512 SSDEEP

            memory/1324-154-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1324-158-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1752-160-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1752-164-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1752-157-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1856-42-0x0000000140000000-0x00000001405E8000-memory.dmp

            memory/2220-8-0x0000000003BB0000-0x000000000449B000-memory.dmp

            memory/2220-3-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2220-1-0x00000000037B0000-0x0000000003BA8000-memory.dmp

            memory/2220-0-0x00000000037B0000-0x0000000003BA8000-memory.dmp

            memory/2220-6-0x00000000037B0000-0x0000000003BA8000-memory.dmp

            memory/2220-2-0x0000000003BB0000-0x000000000449B000-memory.dmp

            memory/2220-4-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2620-9-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2620-7-0x0000000003760000-0x0000000003B58000-memory.dmp

            memory/2620-18-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2620-21-0x0000000003760000-0x0000000003B58000-memory.dmp

            memory/2620-5-0x0000000003760000-0x0000000003B58000-memory.dmp

            memory/2824-102-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-161-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-153-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-119-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-118-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-114-0x00000000037A0000-0x0000000003B98000-memory.dmp

            memory/2824-23-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-159-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-19-0x00000000037A0000-0x0000000003B98000-memory.dmp

            memory/2824-133-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-163-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-20-0x00000000037A0000-0x0000000003B98000-memory.dmp

            memory/2824-165-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-167-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-169-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-171-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-173-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-175-0x0000000000400000-0x0000000001E0E000-memory.dmp

            memory/2824-177-0x0000000000400000-0x0000000001E0E000-memory.dmp