Analysis

  • max time kernel
    149s
  • max time network
    124s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    18-05-2024 16:55

General

  • Target

    49a99adbcef6271145e3c7629435641f595991a92c375162e0f35a70aeeeb336.exe

  • Size

    4.1MB

  • MD5

    32441a4dca0530aedda30463e4f891e4

  • SHA1

    c1ba27a358e438cf3ce59c84e26a661145c27808

  • SHA256

    49a99adbcef6271145e3c7629435641f595991a92c375162e0f35a70aeeeb336

  • SHA512

    1009cc232b70637c7631e1b9f267f65a437acc77b6da7a82d73ad02950f4d54d63b08891dd0485ed037decdd336a4c9aff98010627ccb161c2496a67e26c4228

  • SSDEEP

    98304:Ac7aFVXn+Lid2bryXaMbaClZg093y0sFFfdliBdPq:AX++d2b0aMbplZO0sFfSq

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 19 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
  • Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

    Using powershell.exe command.

  • 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\49a99adbcef6271145e3c7629435641f595991a92c375162e0f35a70aeeeb336.exe
    "C:\Users\Admin\AppData\Local\Temp\49a99adbcef6271145e3c7629435641f595991a92c375162e0f35a70aeeeb336.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2496
    • C:\Users\Admin\AppData\Local\Temp\49a99adbcef6271145e3c7629435641f595991a92c375162e0f35a70aeeeb336.exe
      "C:\Users\Admin\AppData\Local\Temp\49a99adbcef6271145e3c7629435641f595991a92c375162e0f35a70aeeeb336.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:2400
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2240
      • 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:908
        • 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:1992
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4120
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4976
      • 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:568
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Drops file in System32 directory
          • Command and Scripting Interpreter: PowerShell
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1392
        • 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:1884
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4844
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Command and Scripting Interpreter: PowerShell
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1524
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Command and Scripting Interpreter: PowerShell
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4920
          • 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:2884
          • 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:4616

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ywksibd0.2dc.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

      d0c46cad6c0778401e21910bd6b56b70

      SHA1

      7be418951ea96326aca445b8dfe449b2bfa0dca6

      SHA256

      9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02

      SHA512

      057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

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

      Filesize

      19KB

      MD5

      bc3acaf17b1b6f70286e778f87761593

      SHA1

      6adafacab62aeed41edf9c5536034b9236329d83

      SHA256

      ca25a148632b889a5d952d55e15daa32bd13bfa56e1ab8260f12a929885333c2

      SHA512

      25dba84e74a34048a7c4c55a7e4915be11e1913116bd37f8d28a8a4b970f7d549be6644c3da7d4bea031efb1202a6a886a50c1996e1d60a68c1ede3f192831a2

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

      Filesize

      19KB

      MD5

      14a5315d9ba854d4b23054fbcd860ceb

      SHA1

      cb5ea83ee78d72466f6f5ec0de9986112167e776

      SHA256

      8262bdebb218980b1971008a4696e65fba3121d80e55b36a8240396c804b4509

      SHA512

      84295d98d598c827d803631304a2602c29c2d415b8dfe9227994c4c36e994afe7d424b8a2c741cf6b2b8c791077ab9d47110e3af31143fa9b8a248083a756ea4

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

      Filesize

      19KB

      MD5

      5327a69242289dae0e7ae7119a86a82f

      SHA1

      9cf8905146b528df4397410c6aa592fd5ece7c89

      SHA256

      33c57d08b68fb8c81aed5893c3c22d50d32961c67733dd721a1cbdf4bf5fb6ff

      SHA512

      41c8cea5a22b177457dd9281466d4e8ac5fe1857ef2e2fe3effcdcb73415b8b338eab1bda2d6e4419bd348b9382f1ff0ea8de3f7e2cb970810a41ab626bfe60d

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

      Filesize

      19KB

      MD5

      c2ce5d815fdcf0d58ef511adda719022

      SHA1

      62baa7540795ea59a4b4e40b0dd8cace107e3f34

      SHA256

      8d6661c88feffb44725faf0eec0848ff7ef750b638b8cb9470ea1f835922b66d

      SHA512

      4506b0bb482bc1bcdf21dca5039bc41f7cf3c421f2f469d16e5f6c7f7a8bc510803ef536d7029a035f810f98c33bd929dd2b498a4394299e33e79769fd82a443

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

      Filesize

      19KB

      MD5

      e0fe95fd81cd1b8f893e2923b151ab41

      SHA1

      e0457ddf55a06d9254f817d415cee34de7beb043

      SHA256

      2f50d8ef5facf9616249d7aea139cb40f166fe732667d0bdec2bece1929656aa

      SHA512

      f75350c0518e69bbcfaeeb5316849296ddb17e98946c37a5677e8cf106dce8e7afc5bc6cb51556c92a53b639cedb36153bc98b51dadfd04fc32df62a8eec6d3a

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      32441a4dca0530aedda30463e4f891e4

      SHA1

      c1ba27a358e438cf3ce59c84e26a661145c27808

      SHA256

      49a99adbcef6271145e3c7629435641f595991a92c375162e0f35a70aeeeb336

      SHA512

      1009cc232b70637c7631e1b9f267f65a437acc77b6da7a82d73ad02950f4d54d63b08891dd0485ed037decdd336a4c9aff98010627ccb161c2496a67e26c4228

    • memory/568-212-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-207-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-208-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-206-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-205-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-204-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-209-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-210-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-211-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-213-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-214-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-215-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/568-216-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/1392-149-0x00000000078B0000-0x0000000007954000-memory.dmp

      Filesize

      656KB

    • memory/1392-139-0x0000000070BE0000-0x0000000070C2C000-memory.dmp

      Filesize

      304KB

    • memory/1392-136-0x00000000061F0000-0x0000000006547000-memory.dmp

      Filesize

      3.3MB

    • memory/1392-151-0x0000000006080000-0x0000000006095000-memory.dmp

      Filesize

      84KB

    • memory/1392-150-0x0000000007A80000-0x0000000007A91000-memory.dmp

      Filesize

      68KB

    • memory/1392-138-0x00000000066A0000-0x00000000066EC000-memory.dmp

      Filesize

      304KB

    • memory/1392-140-0x0000000070D60000-0x00000000710B7000-memory.dmp

      Filesize

      3.3MB

    • memory/1524-163-0x0000000006050000-0x000000000609C000-memory.dmp

      Filesize

      304KB

    • memory/1524-164-0x0000000070B00000-0x0000000070B4C000-memory.dmp

      Filesize

      304KB

    • memory/1524-165-0x0000000070D50000-0x00000000710A7000-memory.dmp

      Filesize

      3.3MB

    • memory/1524-158-0x0000000005550000-0x00000000058A7000-memory.dmp

      Filesize

      3.3MB

    • memory/1524-174-0x0000000006D40000-0x0000000006DE4000-memory.dmp

      Filesize

      656KB

    • memory/1524-175-0x0000000007080000-0x0000000007091000-memory.dmp

      Filesize

      68KB

    • memory/1524-176-0x00000000058D0000-0x00000000058E5000-memory.dmp

      Filesize

      84KB

    • memory/2240-76-0x0000000007370000-0x0000000007381000-memory.dmp

      Filesize

      68KB

    • memory/2240-65-0x0000000070C80000-0x0000000070CCC000-memory.dmp

      Filesize

      304KB

    • memory/2240-66-0x0000000070EC0000-0x0000000071217000-memory.dmp

      Filesize

      3.3MB

    • memory/2240-75-0x0000000007030000-0x00000000070D4000-memory.dmp

      Filesize

      656KB

    • memory/2240-64-0x0000000005E70000-0x0000000005EBC000-memory.dmp

      Filesize

      304KB

    • memory/2240-77-0x00000000073C0000-0x00000000073D5000-memory.dmp

      Filesize

      84KB

    • memory/2240-55-0x0000000005870000-0x0000000005BC7000-memory.dmp

      Filesize

      3.3MB

    • memory/2400-125-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/2496-22-0x0000000006270000-0x00000000062BC000-memory.dmp

      Filesize

      304KB

    • memory/2496-37-0x0000000007650000-0x00000000076F4000-memory.dmp

      Filesize

      656KB

    • memory/2496-4-0x000000007490E000-0x000000007490F000-memory.dmp

      Filesize

      4KB

    • memory/2496-5-0x0000000004D20000-0x0000000004D56000-memory.dmp

      Filesize

      216KB

    • memory/2496-7-0x0000000074900000-0x00000000750B1000-memory.dmp

      Filesize

      7.7MB

    • memory/2496-6-0x0000000005390000-0x00000000059BA000-memory.dmp

      Filesize

      6.2MB

    • memory/2496-9-0x0000000074900000-0x00000000750B1000-memory.dmp

      Filesize

      7.7MB

    • memory/2496-8-0x0000000005B40000-0x0000000005B62000-memory.dmp

      Filesize

      136KB

    • memory/2496-16-0x0000000005CC0000-0x0000000005D26000-memory.dmp

      Filesize

      408KB

    • memory/2496-50-0x0000000074900000-0x00000000750B1000-memory.dmp

      Filesize

      7.7MB

    • memory/2496-47-0x0000000007920000-0x0000000007928000-memory.dmp

      Filesize

      32KB

    • memory/2496-46-0x0000000007940000-0x000000000795A000-memory.dmp

      Filesize

      104KB

    • memory/2496-45-0x0000000007840000-0x0000000007855000-memory.dmp

      Filesize

      84KB

    • memory/2496-44-0x0000000007830000-0x000000000783E000-memory.dmp

      Filesize

      56KB

    • memory/2496-43-0x00000000077F0000-0x0000000007801000-memory.dmp

      Filesize

      68KB

    • memory/2496-42-0x0000000007880000-0x0000000007916000-memory.dmp

      Filesize

      600KB

    • memory/2496-41-0x00000000077C0000-0x00000000077CA000-memory.dmp

      Filesize

      40KB

    • memory/2496-40-0x0000000007780000-0x000000000779A000-memory.dmp

      Filesize

      104KB

    • memory/2496-39-0x0000000007DC0000-0x000000000843A000-memory.dmp

      Filesize

      6.5MB

    • memory/2496-38-0x0000000074900000-0x00000000750B1000-memory.dmp

      Filesize

      7.7MB

    • memory/2496-36-0x0000000007630000-0x000000000764E000-memory.dmp

      Filesize

      120KB

    • memory/2496-15-0x0000000005BE0000-0x0000000005C46000-memory.dmp

      Filesize

      408KB

    • memory/2496-27-0x0000000070CF0000-0x0000000071047000-memory.dmp

      Filesize

      3.3MB

    • memory/2496-24-0x00000000075F0000-0x0000000007624000-memory.dmp

      Filesize

      208KB

    • memory/2496-26-0x0000000074900000-0x00000000750B1000-memory.dmp

      Filesize

      7.7MB

    • memory/2496-20-0x0000000005D30000-0x0000000006087000-memory.dmp

      Filesize

      3.3MB

    • memory/2496-25-0x0000000070B70000-0x0000000070BBC000-memory.dmp

      Filesize

      304KB

    • memory/2496-21-0x00000000061C0000-0x00000000061DE000-memory.dmp

      Filesize

      120KB

    • memory/2496-23-0x0000000006840000-0x0000000006886000-memory.dmp

      Filesize

      280KB

    • memory/3908-54-0x0000000004860000-0x000000000514B000-memory.dmp

      Filesize

      8.9MB

    • memory/3908-1-0x0000000004450000-0x0000000004854000-memory.dmp

      Filesize

      4.0MB

    • memory/3908-2-0x0000000004860000-0x000000000514B000-memory.dmp

      Filesize

      8.9MB

    • memory/3908-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/3908-53-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/3908-51-0x0000000000400000-0x0000000002738000-memory.dmp

      Filesize

      35.2MB

    • memory/4120-91-0x0000000070EC0000-0x0000000071217000-memory.dmp

      Filesize

      3.3MB

    • memory/4120-90-0x0000000070C80000-0x0000000070CCC000-memory.dmp

      Filesize

      304KB

    • memory/4920-189-0x0000000070C80000-0x0000000070FD7000-memory.dmp

      Filesize

      3.3MB

    • memory/4920-186-0x0000000006430000-0x0000000006787000-memory.dmp

      Filesize

      3.3MB

    • memory/4920-188-0x0000000070B00000-0x0000000070B4C000-memory.dmp

      Filesize

      304KB

    • memory/4976-112-0x0000000070E00000-0x0000000071157000-memory.dmp

      Filesize

      3.3MB

    • memory/4976-109-0x0000000005850000-0x0000000005BA7000-memory.dmp

      Filesize

      3.3MB

    • memory/4976-111-0x0000000070C80000-0x0000000070CCC000-memory.dmp

      Filesize

      304KB