Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    19/04/2024, 19:41

General

  • Target

    249b32709afa0459cb3f5a4b29f828b151b41dc7556be4c3d2cfa3b68019b637.exe

  • Size

    4.2MB

  • MD5

    e35d4cc81cd7e776342b8dee6fe4af9c

  • SHA1

    38ff74fd2e4e87095e1f3a3b2b1936933167b247

  • SHA256

    249b32709afa0459cb3f5a4b29f828b151b41dc7556be4c3d2cfa3b68019b637

  • SHA512

    2ae0622ac4acf6f9adc081b8f4e00dfdb8cd7797d2b115ac1632240a8e5b57aa7a4a522e58eeb600cf0f6999b18756acbc743ca73ac45df2f7c425a77d256c8a

  • SSDEEP

    98304:LuEjldBy7qJjh9wu8oSoDKwgsyZCMqfIDs4L8/2y4fIM:yEBdM7EwuxBKwacdIDs4Got

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
  • Detects Windows executables referencing non-Windows User-Agents 19 IoCs
  • Detects executables Discord URL observed in first stage droppers 19 IoCs
  • Detects executables containing URLs to raw contents of a Github gist 19 IoCs
  • Detects executables containing artifacts associated with disabling Widnows Defender 19 IoCs
  • Detects executables referencing many varying, potentially fake Windows User-Agents 19 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 12 IoCs
  • UPX packed file 5 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 WinMonFS driver. 1 IoCs

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

  • Modifies boot configuration data using bcdedit 1 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 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 use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 27 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\249b32709afa0459cb3f5a4b29f828b151b41dc7556be4c3d2cfa3b68019b637.exe
    "C:\Users\Admin\AppData\Local\Temp\249b32709afa0459cb3f5a4b29f828b151b41dc7556be4c3d2cfa3b68019b637.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2932
    • C:\Users\Admin\AppData\Local\Temp\249b32709afa0459cb3f5a4b29f828b151b41dc7556be4c3d2cfa3b68019b637.exe
      "C:\Users\Admin\AppData\Local\Temp\249b32709afa0459cb3f5a4b29f828b151b41dc7556be4c3d2cfa3b68019b637.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:2872
      • 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:2468
        • 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:804
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • Drops file in Windows directory
        • Modifies data under HKEY_USERS
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1792
        • 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:1844
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1768
          • 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
            PID:1672
          • 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:876
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\Sysnative\bcdedit.exe /v
            4⤵
            • Modifies boot configuration data using bcdedit
            PID:2860
          • 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:2588
          • C:\Windows\windefender.exe
            "C:\Windows\windefender.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1808
            • 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:3004
              • 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:1424
    • C:\Windows\system32\makecab.exe
      "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240419194134.log C:\Windows\Logs\CBS\CbsPersist_20240419194134.cab
      1⤵
      • Drops file in Windows directory
      PID:2640
    • C:\Windows\windefender.exe
      C:\Windows\windefender.exe
      1⤵
      • Executes dropped EXE
      PID:2832

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          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\Cab9169.tmp

            Filesize

            65KB

            MD5

            ac05d27423a85adc1622c714f2cb6184

            SHA1

            b0fe2b1abddb97837ea0195be70ab2ff14d43198

            SHA256

            c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

            SHA512

            6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

          • C:\Users\Admin\AppData\Local\Temp\Tar9315.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:\Windows\windefender.exe

            Filesize

            2.0MB

            MD5

            8e67f58837092385dcf01e8a2b4f5783

            SHA1

            012c49cfd8c5d06795a6f67ea2baf2a082cf8625

            SHA256

            166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa

            SHA512

            40d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec

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

            Filesize

            1.7MB

            MD5

            13aaafe14eb60d6a718230e82c671d57

            SHA1

            e039dd924d12f264521b8e689426fb7ca95a0a7b

            SHA256

            f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

            SHA512

            ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

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

            Filesize

            1.5MB

            MD5

            f0616fa8bc54ece07e3107057f74e4db

            SHA1

            b33995c4f9a004b7d806c4bb36040ee844781fca

            SHA256

            6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

            SHA512

            15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

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

            Filesize

            5.3MB

            MD5

            1afff8d5352aecef2ecd47ffa02d7f7d

            SHA1

            8b115b84efdb3a1b87f750d35822b2609e665bef

            SHA256

            c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

            SHA512

            e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

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

            Filesize

            591KB

            MD5

            e2f68dc7fbd6e0bf031ca3809a739346

            SHA1

            9c35494898e65c8a62887f28e04c0359ab6f63f5

            SHA256

            b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4

            SHA512

            26256a12b5b8b3a40b34f18e081cdb45ea11845589c9d458a79385a4b8178f32164b417ddc9346fab8299bc6d4b9fedb620274c4edf9321424f37a2e2a6de579

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

            Filesize

            163KB

            MD5

            5c399d34d8dc01741269ff1f1aca7554

            SHA1

            e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

            SHA256

            e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

            SHA512

            8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

          • \Windows\rss\csrss.exe

            Filesize

            4.2MB

            MD5

            e35d4cc81cd7e776342b8dee6fe4af9c

            SHA1

            38ff74fd2e4e87095e1f3a3b2b1936933167b247

            SHA256

            249b32709afa0459cb3f5a4b29f828b151b41dc7556be4c3d2cfa3b68019b637

            SHA512

            2ae0622ac4acf6f9adc081b8f4e00dfdb8cd7797d2b115ac1632240a8e5b57aa7a4a522e58eeb600cf0f6999b18756acbc743ca73ac45df2f7c425a77d256c8a

          • memory/1672-47-0x0000000140000000-0x00000001405E8000-memory.dmp

            Filesize

            5.9MB

          • memory/1672-55-0x0000000140000000-0x00000001405E8000-memory.dmp

            Filesize

            5.9MB

          • memory/1792-73-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-133-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-33-0x00000000032E0000-0x00000000036D8000-memory.dmp

            Filesize

            4.0MB

          • memory/1792-35-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-146-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-31-0x00000000032E0000-0x00000000036D8000-memory.dmp

            Filesize

            4.0MB

          • memory/1792-145-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-136-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-135-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-124-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-123-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-122-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-74-0x00000000032E0000-0x00000000036D8000-memory.dmp

            Filesize

            4.0MB

          • memory/1792-121-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-120-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-119-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-114-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1792-118-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/1808-140-0x0000000000400000-0x00000000008DF000-memory.dmp

            Filesize

            4.9MB

          • memory/1808-144-0x0000000000400000-0x00000000008DF000-memory.dmp

            Filesize

            4.9MB

          • memory/2832-147-0x0000000000400000-0x00000000008DF000-memory.dmp

            Filesize

            4.9MB

          • memory/2832-143-0x0000000000400000-0x00000000008DF000-memory.dmp

            Filesize

            4.9MB

          • memory/2872-19-0x00000000031F0000-0x00000000035E8000-memory.dmp

            Filesize

            4.0MB

          • memory/2872-32-0x00000000031F0000-0x00000000035E8000-memory.dmp

            Filesize

            4.0MB

          • memory/2872-20-0x0000000004D20000-0x000000000560B000-memory.dmp

            Filesize

            8.9MB

          • memory/2872-21-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2872-30-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2872-5-0x00000000031F0000-0x00000000035E8000-memory.dmp

            Filesize

            4.0MB

          • memory/2932-7-0x0000000004DD0000-0x00000000056BB000-memory.dmp

            Filesize

            8.9MB

          • memory/2932-2-0x0000000004DD0000-0x00000000056BB000-memory.dmp

            Filesize

            8.9MB

          • memory/2932-3-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2932-1-0x0000000003440000-0x0000000003838000-memory.dmp

            Filesize

            4.0MB

          • memory/2932-6-0x0000000003440000-0x0000000003838000-memory.dmp

            Filesize

            4.0MB

          • memory/2932-0-0x0000000003440000-0x0000000003838000-memory.dmp

            Filesize

            4.0MB

          • memory/2932-4-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB