Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    19-05-2024 14:06

General

  • Target

    611b530f795f70fcc99928eee9caa0b38501c1f0742f77cf6c7aedc250375490.exe

  • Size

    4.1MB

  • MD5

    fe15efaa69e82c58a1b87b13d6e63e74

  • SHA1

    9edf9ffe99b3714762f427126cc3dde316ed4dbf

  • SHA256

    611b530f795f70fcc99928eee9caa0b38501c1f0742f77cf6c7aedc250375490

  • SHA512

    4fc73bf39aac7dca98483238913663932bf3c3026d7e6d026d80570329d3afd6d1197beee95a1e042d20b2888a0a0ac0f79bc04125d06ff2ad654e636c8614c6

  • SSDEEP

    98304:kNaXJU8AJvaro5mDbVFqT6QhicqJuM7BOvJODhfBAiYJAl59WP:kqU8A9EamDpImBOY9f2NP

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 19 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 6 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\611b530f795f70fcc99928eee9caa0b38501c1f0742f77cf6c7aedc250375490.exe
    "C:\Users\Admin\AppData\Local\Temp\611b530f795f70fcc99928eee9caa0b38501c1f0742f77cf6c7aedc250375490.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2948
    • C:\Users\Admin\AppData\Local\Temp\611b530f795f70fcc99928eee9caa0b38501c1f0742f77cf6c7aedc250375490.exe
      "C:\Users\Admin\AppData\Local\Temp\611b530f795f70fcc99928eee9caa0b38501c1f0742f77cf6c7aedc250375490.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:2592
      • 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:2196
        • 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:2512
      • 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: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:720
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:2260
          • 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:624
            • 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:2060
            • 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:2308
            • 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:1388
            • 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:904
            • 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:2136
            • 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:1172
            • 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:2720
            • 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:1600
            • 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:2784
            • 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:3052
            • 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:2996
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -timeout 0
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2988
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -default {71A3C7FC-F751-4982-AEC1-E958357E6813}
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:400
          • 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:1196
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\Sysnative\bcdedit.exe /v
            4⤵
            • Modifies boot configuration data using bcdedit
            PID:2640
          • C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            4⤵
            • Executes dropped EXE
            PID:2196
          • 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:1488
          • C:\Windows\windefender.exe
            "C:\Windows\windefender.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2384
            • 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:2388
                • 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:2092
      • C:\Windows\system32\makecab.exe
        "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240519140634.log C:\Windows\Logs\CBS\CbsPersist_20240519140634.cab
        1⤵
        • Drops file in Windows directory
        PID:2688
      • C:\Windows\windefender.exe
        C:\Windows\windefender.exe
        1⤵
        • Executes dropped EXE
        • Modifies data under HKEY_USERS
        PID:2368

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

        Filesize

        68KB

        MD5

        29f65ba8e88c063813cc50a4ea544e93

        SHA1

        05a7040d5c127e68c25d81cc51271ffb8bef3568

        SHA256

        1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

        SHA512

        e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

      • C:\Users\Admin\AppData\Local\Temp\Symbols\ntkrnlmp.pdb\AAF33CF37E194E98957768CF9C02DE8E2\download.error

        Filesize

        8.3MB

        MD5

        fd2727132edd0b59fa33733daa11d9ef

        SHA1

        63e36198d90c4c2b9b09dd6786b82aba5f03d29a

        SHA256

        3a72dbedc490773f90e241c8b3b839383a63ce36426a4f330a0f754b14b4d23e

        SHA512

        3e251be7d0e8db92d50092a4c4be3c74f42f3d564c72981f43a8e0fe06427513bfa0f67821a61a503a4f85741f0b150280389f8f4b4f01cdfd98edce5af29e6e

      • C:\Users\Admin\AppData\Local\Temp\Symbols\winload_prod.pdb\768283CA443847FB8822F9DB1F36ECC51\download.error

        Filesize

        492KB

        MD5

        fafbf2197151d5ce947872a4b0bcbe16

        SHA1

        a86eaa2dd9fc6d36fcfb41df7ead8d1166aea020

        SHA256

        feb122b7916a1e62a7a6ae8d25ea48a2efc86f6e6384f5526e18ffbfc5f5ff71

        SHA512

        acbd49a111704d001a4ae44d1a071d566452f92311c5c0099d57548eddc9b3393224792c602022df5c3dd19b0a1fb4eff965bf038c8783ae109336699f9d13f6

      • C:\Users\Admin\AppData\Local\Temp\Tar75A2.tmp

        Filesize

        177KB

        MD5

        435a9ac180383f9fa094131b173a2f7b

        SHA1

        76944ea657a9db94f9a4bef38f88c46ed4166983

        SHA256

        67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

        SHA512

        1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

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

        Filesize

        281KB

        MD5

        d98e33b66343e7c96158444127a117f6

        SHA1

        bb716c5509a2bf345c6c1152f6e3e1452d39d50d

        SHA256

        5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

        SHA512

        705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

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

        Filesize

        1.7MB

        MD5

        13aaafe14eb60d6a718230e82c671d57

        SHA1

        e039dd924d12f264521b8e689426fb7ca95a0a7b

        SHA256

        f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

        SHA512

        ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

      • C:\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe

        Filesize

        5.3MB

        MD5

        1afff8d5352aecef2ecd47ffa02d7f7d

        SHA1

        8b115b84efdb3a1b87f750d35822b2609e665bef

        SHA256

        c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

        SHA512

        e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

      • C:\Users\Admin\AppData\Local\Temp\osloader.exe

        Filesize

        591KB

        MD5

        e2f68dc7fbd6e0bf031ca3809a739346

        SHA1

        9c35494898e65c8a62887f28e04c0359ab6f63f5

        SHA256

        b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4

        SHA512

        26256a12b5b8b3a40b34f18e081cdb45ea11845589c9d458a79385a4b8178f32164b417ddc9346fab8299bc6d4b9fedb620274c4edf9321424f37a2e2a6de579

      • C:\Windows\rss\csrss.exe

        Filesize

        4.1MB

        MD5

        fe15efaa69e82c58a1b87b13d6e63e74

        SHA1

        9edf9ffe99b3714762f427126cc3dde316ed4dbf

        SHA256

        611b530f795f70fcc99928eee9caa0b38501c1f0742f77cf6c7aedc250375490

        SHA512

        4fc73bf39aac7dca98483238913663932bf3c3026d7e6d026d80570329d3afd6d1197beee95a1e042d20b2888a0a0ac0f79bc04125d06ff2ad654e636c8614c6

      • C:\Windows\windefender.exe

        Filesize

        2.0MB

        MD5

        8e67f58837092385dcf01e8a2b4f5783

        SHA1

        012c49cfd8c5d06795a6f67ea2baf2a082cf8625

        SHA256

        166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa

        SHA512

        40d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec

      • \Users\Admin\AppData\Local\Temp\csrss\dsefix.exe

        Filesize

        94KB

        MD5

        d98e78fd57db58a11f880b45bb659767

        SHA1

        ab70c0d3bd9103c07632eeecee9f51d198ed0e76

        SHA256

        414035cc96d8bcc87ed173852a839ffbb45882a98c7a6f7b821e1668891deef0

        SHA512

        aafbd3eee102d0b682c4c854d69d50bac077e48f7f0dd8a5f913c6c73027aed7231d99fc9d716511759800da8c4f0f394b318821e9e47f6e62e436c8725a7831

      • \Users\Admin\AppData\Local\Temp\dbghelp.dll

        Filesize

        1.5MB

        MD5

        f0616fa8bc54ece07e3107057f74e4db

        SHA1

        b33995c4f9a004b7d806c4bb36040ee844781fca

        SHA256

        6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

        SHA512

        15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

      • \Users\Admin\AppData\Local\Temp\symsrv.dll

        Filesize

        163KB

        MD5

        5c399d34d8dc01741269ff1f1aca7554

        SHA1

        e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

        SHA256

        e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

        SHA512

        8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

      • memory/624-25-0x0000000140000000-0x00000001405E8000-memory.dmp

        Filesize

        5.9MB

      • memory/624-39-0x0000000140000000-0x00000001405E8000-memory.dmp

        Filesize

        5.9MB

      • memory/2368-142-0x0000000000400000-0x00000000008DF000-memory.dmp

        Filesize

        4.9MB

      • memory/2368-146-0x0000000000400000-0x00000000008DF000-memory.dmp

        Filesize

        4.9MB

      • memory/2368-150-0x0000000000400000-0x00000000008DF000-memory.dmp

        Filesize

        4.9MB

      • memory/2384-139-0x0000000000400000-0x00000000008DF000-memory.dmp

        Filesize

        4.9MB

      • memory/2384-144-0x0000000000400000-0x00000000008DF000-memory.dmp

        Filesize

        4.9MB

      • memory/2528-102-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-17-0x00000000041F0000-0x00000000045E8000-memory.dmp

        Filesize

        4.0MB

      • memory/2528-104-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-159-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-87-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-118-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-157-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-147-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-155-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-153-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-138-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-103-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-151-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-145-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2528-149-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2592-5-0x0000000004190000-0x0000000004588000-memory.dmp

        Filesize

        4.0MB

      • memory/2592-7-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2592-18-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2948-1-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2948-2-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2948-3-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2948-6-0x0000000000400000-0x000000000273B000-memory.dmp

        Filesize

        35.2MB

      • memory/2948-0-0x0000000004250000-0x0000000004648000-memory.dmp

        Filesize

        4.0MB