Analysis

  • max time kernel
    150s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/04/2024, 20:24

General

  • Target

    c2b1475408b163a223e84badcee44bd59fe4305d02ce9a8b0ce34986360ab919.exe

  • Size

    4.2MB

  • MD5

    b10365f00b12962214ee27077e67be91

  • SHA1

    9b5a96732e498bd5085f6da72b709364932ba1f1

  • SHA256

    c2b1475408b163a223e84badcee44bd59fe4305d02ce9a8b0ce34986360ab919

  • SHA512

    ef64087a739c26f0f859af2c156f208cc4afe4f78619df217e92567f2b93b7ed30477e7027968caa34ee9b77fafbef09c17eb6567cb861a883253e0206585238

  • SSDEEP

    98304:q2m5eOYCD1ID98VF2Kih+6YxfniOeVNR3JpIP6GA7sf3HgV11Gz:q2m5BYCDY8uVjYxfniXVNFJ2yR7sfQVi

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 2 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.

  • Drops file in System32 directory 7 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 2 IoCs
  • 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 10 IoCs
  • Suspicious use of WriteProcessMemory 30 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\c2b1475408b163a223e84badcee44bd59fe4305d02ce9a8b0ce34986360ab919.exe
    "C:\Users\Admin\AppData\Local\Temp\c2b1475408b163a223e84badcee44bd59fe4305d02ce9a8b0ce34986360ab919.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5040
    • C:\Users\Admin\AppData\Local\Temp\c2b1475408b163a223e84badcee44bd59fe4305d02ce9a8b0ce34986360ab919.exe
      "C:\Users\Admin\AppData\Local\Temp\c2b1475408b163a223e84badcee44bd59fe4305d02ce9a8b0ce34986360ab919.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:2160
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2868
      • 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:2740
        • 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:2416
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1632
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4588
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2876
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2108
        • 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:844
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1200
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1752
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1156
          • 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:5092
          • 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:244

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rpbha0sz.mfc.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

            Filesize

            281KB

            MD5

            d98e33b66343e7c96158444127a117f6

            SHA1

            bb716c5509a2bf345c6c1152f6e3e1452d39d50d

            SHA256

            5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

            SHA512

            705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

          • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

            Filesize

            2KB

            MD5

            3d086a433708053f9bf9523e1d87a4e8

            SHA1

            b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

            SHA256

            6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

            SHA512

            931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

          • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

            Filesize

            19KB

            MD5

            045db488babed1a128eaab4ae9c53cc3

            SHA1

            4880b3831185a35aa31e3ce34642cc7e47706f84

            SHA256

            54da94e97c851183d0615ed4944907104d815df242dd751783fc81d2ad1e5773

            SHA512

            fdd65c88c2ed18dd0b29b98b6b7e3f1a8c2bc04054a68642fa68e40eb8cdb39daed4f2b8170aca9592bbc971aaeada61e12f6050f2eae2a7dc63ddc8f9a2dcd8

          • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

            Filesize

            19KB

            MD5

            97d70c5cbfabefd6bd94a23e874ba70b

            SHA1

            3e4ad814b1bb9a18b881c9310e8b1c09d9cfe51e

            SHA256

            ad06ce39510c959fd3f38b90e567a207e1b61af5f965325d7936fa89543455ed

            SHA512

            fdcd632d08b53814d5157689350f3043beed9fa25a0363e0946c151f67b23efc953a9e321d4b6e3e656c2aa0c3203dcc1d1e59cb97cc23a8a7a50365e8c107f4

          • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

            Filesize

            19KB

            MD5

            658c768676479f13e5c6210b6b17d9b4

            SHA1

            b784c68a28b1c498a8a31a4f3a7fe5a169778347

            SHA256

            1296f1e88bdc470fe36dcbf6bf6ee75dcb6ad59295a613b021cf06bef3a334e5

            SHA512

            41168d1aabf25739bd20a77256f9af944f07a210b6f2885e83bad8ce7cbff0ec0c2af3ab2719df0416e1331ec5f643d60edf5a0c402926d2fda3bcce8a8eae99

          • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

            Filesize

            19KB

            MD5

            071094184263ba3cb99b1f0d9d38e0db

            SHA1

            ceb6999d84a407aff69319a268c795512c147b97

            SHA256

            bddbba55f60a3f41e95df7de776af1c0459cb8a86d4d0fa325b9570639e56707

            SHA512

            4e2496a8e8484959e9a429f39a8a0c867e41d3f7ff62107079e24a2be720e0138600745953cc7f95000be5754fe22bafbda304fe386edcbc5e1881be3e0e112f

          • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

            Filesize

            19KB

            MD5

            46889ca1b06dd8f4b6da316ba9f7be99

            SHA1

            3c40c91b6fccf8f514a0f293999ececbcd7f8736

            SHA256

            537f62c6d5b25ef1d272761b59878b2aab6fe6ce04b02a13b290e3cee1529256

            SHA512

            f7b3db12e7144393dc79b853ca1671dc913a6c586039738940891e3b00bd2f5f444b92cd98c3be974d016864705c3034d5155bd28ed4fe180d600ceb3862c10e

          • C:\Windows\rss\csrss.exe

            Filesize

            4.2MB

            MD5

            b10365f00b12962214ee27077e67be91

            SHA1

            9b5a96732e498bd5085f6da72b709364932ba1f1

            SHA256

            c2b1475408b163a223e84badcee44bd59fe4305d02ce9a8b0ce34986360ab919

            SHA512

            ef64087a739c26f0f859af2c156f208cc4afe4f78619df217e92567f2b93b7ed30477e7027968caa34ee9b77fafbef09c17eb6567cb861a883253e0206585238

          • memory/1156-197-0x0000000005690000-0x00000000059E4000-memory.dmp

            Filesize

            3.3MB

          • memory/1156-199-0x000000006FED0000-0x000000006FF1C000-memory.dmp

            Filesize

            304KB

          • memory/1156-200-0x0000000070620000-0x0000000070974000-memory.dmp

            Filesize

            3.3MB

          • memory/1632-93-0x0000000070730000-0x0000000070A84000-memory.dmp

            Filesize

            3.3MB

          • memory/1632-92-0x000000006FFB0000-0x000000006FFFC000-memory.dmp

            Filesize

            304KB

          • memory/1632-81-0x0000000005D00000-0x0000000006054000-memory.dmp

            Filesize

            3.3MB

          • memory/1752-173-0x000000006FED0000-0x000000006FF1C000-memory.dmp

            Filesize

            304KB

          • memory/1752-172-0x00000000065D0000-0x000000000661C000-memory.dmp

            Filesize

            304KB

          • memory/1752-170-0x00000000059C0000-0x0000000005D14000-memory.dmp

            Filesize

            3.3MB

          • memory/1752-174-0x0000000070660000-0x00000000709B4000-memory.dmp

            Filesize

            3.3MB

          • memory/1752-186-0x0000000005E80000-0x0000000005E94000-memory.dmp

            Filesize

            80KB

          • memory/1752-185-0x00000000075E0000-0x00000000075F1000-memory.dmp

            Filesize

            68KB

          • memory/1752-184-0x00000000072E0000-0x0000000007383000-memory.dmp

            Filesize

            652KB

          • memory/2100-3-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2100-1-0x0000000004660000-0x0000000004A5E000-memory.dmp

            Filesize

            4.0MB

          • memory/2100-77-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2100-2-0x0000000006C40000-0x000000000752B000-memory.dmp

            Filesize

            8.9MB

          • memory/2100-104-0x0000000006C40000-0x000000000752B000-memory.dmp

            Filesize

            8.9MB

          • memory/2100-103-0x0000000004660000-0x0000000004A5E000-memory.dmp

            Filesize

            4.0MB

          • memory/2108-147-0x0000000070750000-0x0000000070AA4000-memory.dmp

            Filesize

            3.3MB

          • memory/2108-146-0x000000006FFB0000-0x000000006FFFC000-memory.dmp

            Filesize

            304KB

          • memory/2108-140-0x0000000005390000-0x00000000056E4000-memory.dmp

            Filesize

            3.3MB

          • memory/2160-132-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2160-127-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2868-63-0x000000006FFB0000-0x000000006FFFC000-memory.dmp

            Filesize

            304KB

          • memory/2868-62-0x00000000059E0000-0x0000000005D34000-memory.dmp

            Filesize

            3.3MB

          • memory/2868-74-0x0000000007120000-0x00000000071C3000-memory.dmp

            Filesize

            652KB

          • memory/2868-75-0x0000000007430000-0x0000000007441000-memory.dmp

            Filesize

            68KB

          • memory/2868-76-0x0000000007480000-0x0000000007494000-memory.dmp

            Filesize

            80KB

          • memory/2868-64-0x0000000070150000-0x00000000704A4000-memory.dmp

            Filesize

            3.3MB

          • memory/2876-229-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-225-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-231-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-160-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-227-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-235-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-237-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-233-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-217-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-219-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-222-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/2876-221-0x0000000000400000-0x0000000004420000-memory.dmp

            Filesize

            64.1MB

          • memory/4588-116-0x000000006FFB0000-0x000000006FFFC000-memory.dmp

            Filesize

            304KB

          • memory/4588-117-0x0000000070730000-0x0000000070A84000-memory.dmp

            Filesize

            3.3MB

          • memory/5040-51-0x0000000074110000-0x00000000748C0000-memory.dmp

            Filesize

            7.7MB

          • memory/5040-7-0x0000000002DF0000-0x0000000002E00000-memory.dmp

            Filesize

            64KB

          • memory/5040-44-0x0000000007980000-0x0000000007991000-memory.dmp

            Filesize

            68KB

          • memory/5040-8-0x0000000005480000-0x0000000005AA8000-memory.dmp

            Filesize

            6.2MB

          • memory/5040-43-0x0000000007A80000-0x0000000007B16000-memory.dmp

            Filesize

            600KB

          • memory/5040-5-0x0000000074110000-0x00000000748C0000-memory.dmp

            Filesize

            7.7MB

          • memory/5040-42-0x0000000007970000-0x000000000797A000-memory.dmp

            Filesize

            40KB

          • memory/5040-41-0x0000000007880000-0x0000000007923000-memory.dmp

            Filesize

            652KB

          • memory/5040-40-0x0000000007860000-0x000000000787E000-memory.dmp

            Filesize

            120KB

          • memory/5040-30-0x0000000070560000-0x00000000708B4000-memory.dmp

            Filesize

            3.3MB

          • memory/5040-28-0x0000000007820000-0x0000000007852000-memory.dmp

            Filesize

            200KB

          • memory/5040-29-0x000000006FFB0000-0x000000006FFFC000-memory.dmp

            Filesize

            304KB

          • memory/5040-6-0x0000000002DF0000-0x0000000002E00000-memory.dmp

            Filesize

            64KB

          • memory/5040-45-0x00000000079C0000-0x00000000079CE000-memory.dmp

            Filesize

            56KB

          • memory/5040-4-0x0000000002CE0000-0x0000000002D16000-memory.dmp

            Filesize

            216KB

          • memory/5040-27-0x0000000007670000-0x000000000768A000-memory.dmp

            Filesize

            104KB

          • memory/5040-26-0x0000000007CF0000-0x000000000836A000-memory.dmp

            Filesize

            6.5MB

          • memory/5040-46-0x00000000079E0000-0x00000000079F4000-memory.dmp

            Filesize

            80KB

          • memory/5040-47-0x0000000007A30000-0x0000000007A4A000-memory.dmp

            Filesize

            104KB

          • memory/5040-9-0x00000000052D0000-0x00000000052F2000-memory.dmp

            Filesize

            136KB

          • memory/5040-48-0x0000000007A20000-0x0000000007A28000-memory.dmp

            Filesize

            32KB

          • memory/5040-10-0x0000000005370000-0x00000000053D6000-memory.dmp

            Filesize

            408KB

          • memory/5040-11-0x0000000005B60000-0x0000000005BC6000-memory.dmp

            Filesize

            408KB

          • memory/5040-21-0x0000000005CD0000-0x0000000006024000-memory.dmp

            Filesize

            3.3MB

          • memory/5040-22-0x0000000006290000-0x00000000062AE000-memory.dmp

            Filesize

            120KB

          • memory/5040-23-0x00000000062D0000-0x000000000631C000-memory.dmp

            Filesize

            304KB

          • memory/5040-24-0x00000000067E0000-0x0000000006824000-memory.dmp

            Filesize

            272KB

          • memory/5040-25-0x00000000073C0000-0x0000000007436000-memory.dmp

            Filesize

            472KB