Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    27/04/2024, 12:17

General

  • Target

    112516b1612a7850cf8136b0ad28613bf5e46acb4e84c3467397d5f1635babaa.exe

  • Size

    4.1MB

  • MD5

    6987835c461a63dae16bc3f17bae8289

  • SHA1

    efa9d995a09403a3e9d4573a40d79bce63da99a4

  • SHA256

    112516b1612a7850cf8136b0ad28613bf5e46acb4e84c3467397d5f1635babaa

  • SHA512

    5f1ea74e0d888e63f224bdf146390c65d2bacc9518b9abd62e7d4760d767b3ce9aa6a2d7355520b1f5ce84461b88b4f81776429faae1f7880168018d9c9295c2

  • SSDEEP

    98304:LxCWG3Td/212A9tSPb8vctuIp2ZHNoZVPX5Ut6lNIHcaW+cG6qPFkDdt:LxCr3TdeRtEuctuInVWCNIHlW+Uq6

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 16 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\112516b1612a7850cf8136b0ad28613bf5e46acb4e84c3467397d5f1635babaa.exe
    "C:\Users\Admin\AppData\Local\Temp\112516b1612a7850cf8136b0ad28613bf5e46acb4e84c3467397d5f1635babaa.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:416
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4900
    • C:\Users\Admin\AppData\Local\Temp\112516b1612a7850cf8136b0ad28613bf5e46acb4e84c3467397d5f1635babaa.exe
      "C:\Users\Admin\AppData\Local\Temp\112516b1612a7850cf8136b0ad28613bf5e46acb4e84c3467397d5f1635babaa.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:2844
      • 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:4184
      • 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:4540
        • 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:3856
      • 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:3572
      • 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:1088
      • 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:2312
        • 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:1788
        • 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:2228
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:2360
          • 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:1740
          • 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:1380
          • 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:1896
          • 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:4940

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pmei1o31.qid.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

            ac4917a885cf6050b1a483e4bc4d2ea5

            SHA1

            b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f

            SHA256

            e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9

            SHA512

            092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d

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

            Filesize

            19KB

            MD5

            b8c22711d5114f707680ebddb11aae3e

            SHA1

            f473ffeff666610935c2c1fcec941651503373dc

            SHA256

            59455fe5ab76ee91eae281e90498cabcf4f6a8bb385a7e9e51f79f4ab3dfbcf0

            SHA512

            1b72be898ec0bceecc145027a39442704492e71b98c5fc4011b6dfc4c2fc65800a2cab4b38c815e5d6f26e2ef0eebda86e084bffc3ba7fd7fe7dbcd83ad6b889

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

            Filesize

            19KB

            MD5

            9fd3b299053d198bb143601044e0bb3b

            SHA1

            fb5561ef6e0bd93cdce357d80719d4f43d3b1dd2

            SHA256

            2a0ce19b4160559a8d39cdbb3015a14d46a20e60546d1d72a000610c1e2ea882

            SHA512

            8bd8f7cd7b22f6735f4fc2b74a560ab490a641a0cb5bf0a243ac90d9db6e661670c6c53551353c7b41b3158321f3f1c90480b8bae1718aca61bdce6df71c951c

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

            Filesize

            19KB

            MD5

            04d678f8c3d96c874e7b438a600952c7

            SHA1

            3a78620bf182ff16dccf4019a66ec190d0000b83

            SHA256

            03b5317d63696b9b03881ca9aae6e511406b67f88be0af4e35a3eba1259aee43

            SHA512

            e4fb243e549d3ee0e5a8b8c144416fe4009a82c48b45f55e0aa8b653950b2d1fbde4fd3fae43d2910f63c15a659423f8c583e2fad39c8e12ddef1b7171957a41

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

            Filesize

            19KB

            MD5

            298d1fa8b5b9e7311e15589fd02c2973

            SHA1

            0e41e65a7640987c533d6b06f28ce7600d775b1e

            SHA256

            366bf85d35a3fa363be942628b42efb3eeda6996d6e09078e2d35182cc3b9b84

            SHA512

            b8382248cf9c625b0729a5c314dcf4328a8d81017297580595f36a19c360b721a8780432f7eeeefdcc85cbaa2abc9a61f98179a996c9e48017676c035849de8a

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

            Filesize

            19KB

            MD5

            109aca4b252072e886356ee19952dddd

            SHA1

            71ebd80fcf9fad13988e37c93f55cfd11dd05dd0

            SHA256

            cec86b91e4a19e5a210f41a5f01090824a39a07c2a0a27aee0906c43fea279f6

            SHA512

            51ccadfbd8da5f3f474037e793375573ec91e1ff04f58b24d022fa2dfe7a2a99c469fddc08ba4108cff6c6719e84a865695aef5f5fcf8b611c6d97547b479d7d

          • C:\Windows\rss\csrss.exe

            Filesize

            4.1MB

            MD5

            6987835c461a63dae16bc3f17bae8289

            SHA1

            efa9d995a09403a3e9d4573a40d79bce63da99a4

            SHA256

            112516b1612a7850cf8136b0ad28613bf5e46acb4e84c3467397d5f1635babaa

            SHA512

            5f1ea74e0d888e63f224bdf146390c65d2bacc9518b9abd62e7d4760d767b3ce9aa6a2d7355520b1f5ce84461b88b4f81776429faae1f7880168018d9c9295c2

          • memory/416-49-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/416-1-0x0000000003530000-0x000000000392B000-memory.dmp

            Filesize

            4.0MB

          • memory/416-2-0x00000000050D0000-0x00000000059BB000-memory.dmp

            Filesize

            8.9MB

          • memory/416-3-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/416-51-0x00000000050D0000-0x00000000059BB000-memory.dmp

            Filesize

            8.9MB

          • memory/416-50-0x0000000003530000-0x000000000392B000-memory.dmp

            Filesize

            4.0MB

          • memory/1088-108-0x0000000070B80000-0x0000000070BCC000-memory.dmp

            Filesize

            304KB

          • memory/1088-109-0x0000000070D00000-0x0000000071057000-memory.dmp

            Filesize

            3.3MB

          • memory/1380-186-0x0000000070AA0000-0x0000000070AEC000-memory.dmp

            Filesize

            304KB

          • memory/1380-187-0x0000000070C20000-0x0000000070F77000-memory.dmp

            Filesize

            3.3MB

          • memory/1380-183-0x0000000006160000-0x00000000064B7000-memory.dmp

            Filesize

            3.3MB

          • memory/1740-172-0x0000000007310000-0x0000000007321000-memory.dmp

            Filesize

            68KB

          • memory/1740-161-0x0000000070AA0000-0x0000000070AEC000-memory.dmp

            Filesize

            304KB

          • memory/1740-160-0x00000000062F0000-0x000000000633C000-memory.dmp

            Filesize

            304KB

          • memory/1740-162-0x0000000070CF0000-0x0000000071047000-memory.dmp

            Filesize

            3.3MB

          • memory/1740-150-0x0000000005840000-0x0000000005B97000-memory.dmp

            Filesize

            3.3MB

          • memory/1740-171-0x0000000006FA0000-0x0000000007044000-memory.dmp

            Filesize

            656KB

          • memory/1740-173-0x0000000005130000-0x0000000005145000-memory.dmp

            Filesize

            84KB

          • memory/1788-137-0x0000000070D00000-0x0000000071057000-memory.dmp

            Filesize

            3.3MB

          • memory/1788-136-0x0000000070B80000-0x0000000070BCC000-memory.dmp

            Filesize

            304KB

          • memory/2312-147-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2312-202-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2312-212-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2312-204-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2312-214-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2312-216-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2312-149-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2312-210-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2312-208-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2312-206-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2844-123-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/2844-87-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/3572-89-0x0000000070D00000-0x0000000071057000-memory.dmp

            Filesize

            3.3MB

          • memory/3572-88-0x0000000070B80000-0x0000000070BCC000-memory.dmp

            Filesize

            304KB

          • memory/4184-72-0x0000000007410000-0x0000000007421000-memory.dmp

            Filesize

            68KB

          • memory/4184-73-0x0000000007460000-0x0000000007475000-memory.dmp

            Filesize

            84KB

          • memory/4184-71-0x00000000070F0000-0x0000000007194000-memory.dmp

            Filesize

            656KB

          • memory/4184-62-0x0000000070D00000-0x0000000071057000-memory.dmp

            Filesize

            3.3MB

          • memory/4184-61-0x0000000070B80000-0x0000000070BCC000-memory.dmp

            Filesize

            304KB

          • memory/4900-47-0x0000000074910000-0x00000000750C1000-memory.dmp

            Filesize

            7.7MB

          • memory/4900-44-0x0000000007530000-0x0000000007538000-memory.dmp

            Filesize

            32KB

          • memory/4900-43-0x0000000007500000-0x000000000751A000-memory.dmp

            Filesize

            104KB

          • memory/4900-42-0x00000000074B0000-0x00000000074C5000-memory.dmp

            Filesize

            84KB

          • memory/4900-41-0x00000000074A0000-0x00000000074AE000-memory.dmp

            Filesize

            56KB

          • memory/4900-40-0x0000000007450000-0x0000000007461000-memory.dmp

            Filesize

            68KB

          • memory/4900-39-0x0000000007540000-0x00000000075D6000-memory.dmp

            Filesize

            600KB

          • memory/4900-38-0x0000000007430000-0x000000000743A000-memory.dmp

            Filesize

            40KB

          • memory/4900-37-0x00000000073F0000-0x000000000740A000-memory.dmp

            Filesize

            104KB

          • memory/4900-36-0x0000000007A30000-0x00000000080AA000-memory.dmp

            Filesize

            6.5MB

          • memory/4900-35-0x00000000072C0000-0x0000000007364000-memory.dmp

            Filesize

            656KB

          • memory/4900-34-0x00000000072A0000-0x00000000072BE000-memory.dmp

            Filesize

            120KB

          • memory/4900-25-0x0000000070D00000-0x0000000071057000-memory.dmp

            Filesize

            3.3MB

          • memory/4900-24-0x0000000070B80000-0x0000000070BCC000-memory.dmp

            Filesize

            304KB

          • memory/4900-23-0x0000000007240000-0x0000000007274000-memory.dmp

            Filesize

            208KB

          • memory/4900-22-0x0000000006390000-0x00000000063D6000-memory.dmp

            Filesize

            280KB

          • memory/4900-21-0x0000000005E70000-0x0000000005EBC000-memory.dmp

            Filesize

            304KB

          • memory/4900-20-0x0000000005E50000-0x0000000005E6E000-memory.dmp

            Filesize

            120KB

          • memory/4900-19-0x0000000005A50000-0x0000000005DA7000-memory.dmp

            Filesize

            3.3MB

          • memory/4900-10-0x00000000058E0000-0x0000000005946000-memory.dmp

            Filesize

            408KB

          • memory/4900-9-0x0000000005870000-0x00000000058D6000-memory.dmp

            Filesize

            408KB

          • memory/4900-8-0x0000000004FA0000-0x0000000004FC2000-memory.dmp

            Filesize

            136KB

          • memory/4900-6-0x0000000005010000-0x000000000563A000-memory.dmp

            Filesize

            6.2MB

          • memory/4900-7-0x00000000049D0000-0x00000000049E0000-memory.dmp

            Filesize

            64KB

          • memory/4900-5-0x0000000074910000-0x00000000750C1000-memory.dmp

            Filesize

            7.7MB

          • memory/4900-4-0x0000000004970000-0x00000000049A6000-memory.dmp

            Filesize

            216KB