Analysis

  • max time kernel
    150s
  • max time network
    115s
  • 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 22:27

General

  • Target

    42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe

  • Size

    4.2MB

  • MD5

    bd20d333b6629f29d517085fbc4b3c11

  • SHA1

    dc6cda1698101f26bb7d2668137113834198d7b4

  • SHA256

    42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343

  • SHA512

    cd391b75546b22e06dc2085048285f70364a7439362b19c96f2e369844a57819f37f49493a45a33ce0c9442567defd40ef45536c135bd42e81b0a46ef780dfef

  • SSDEEP

    98304:3amOmyh13YwSD+iffg9rOMOczucEEdNxQlfwo87Elwi0PG1t:3Ty8Jy4o9ecZxQhwo8IinPG1t

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\42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe
    "C:\Users\Admin\AppData\Local\Temp\42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2924
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3304
    • C:\Users\Admin\AppData\Local\Temp\42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe
      "C:\Users\Admin\AppData\Local\Temp\42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.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:1896
      • 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:2680
      • 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:1664
        • 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:2000
      • 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:4372
      • 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:4436
      • 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:804
        • 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:1192
        • 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:4296
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1916
          • 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:2624
          • 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:3860
          • 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:2252
          • 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:440

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lhokm1zp.dxf.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

      104346ed2aa5e32bd14cebe15cb6c802

      SHA1

      c3ea9a7d7109d1977049364e1d31cb03b60e1317

      SHA256

      f2e6ab1fe6a95882c764c358025b4d55fcfd2ef2803e73fc1e8fcd24ce1d3aa3

      SHA512

      b5b252aa45a39e983bf416b2346400576e1bb1d40c8c5990cbf66db854a58dbe59a6c6509518f4fa929a66798397cc792743c054b9b08501f718a3ee4819201b

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

      Filesize

      19KB

      MD5

      5d65c6ab98a380fe15962dd989da4a94

      SHA1

      b8dc12f68a3d9ae7656a1e288a2cce576730db9b

      SHA256

      e50e5c9c2538b88d011d6c501cab4d79dc85b78aa68ba2dbcd570fa62f84e986

      SHA512

      7e1dd702a7970586d56bcda14f1f21e13ae1437c4074f39e027b6dafa5d0c9979c153e770bb9b12144fe1b74f3f0db2ac915aee1612a854301766f82ca1988e4

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

      Filesize

      19KB

      MD5

      b3f3b9ee6b732dd18dea5f2b45b3afea

      SHA1

      9e65f7becdf906e64e0cc838f995c0a3d48ef8c8

      SHA256

      2adf857487cd748431feaf09a73c49be5de59f1ee48e3ef307c1db45c5503a97

      SHA512

      74f0e192dff7a4f94e167e009e256550317662b7300da7091cbb02ac97a6a1865bc6ca9b00d71e468ee107d58cbc8e940475427ff8f149b26a1fe4af3a71d2d3

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

      Filesize

      19KB

      MD5

      8dff70ba210cba1512af69c306f27611

      SHA1

      30b90cba40a5fe2701a776680ca7a21e64191286

      SHA256

      248dd378e0a7d1feef96f0e1e4f794e84f05a1215c3946a51b4dd05896a82652

      SHA512

      9efac23857aacb0484a984edbf056163f0451c035f095f2a9e876bcc260e367a3e5c37bf00af367037969f625ffffd9b7d081c8af3249d773ae232b560aed413

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

      Filesize

      19KB

      MD5

      f62d0f4d802633e5147fb53bc11e2008

      SHA1

      42dce88872af80dc2238bf138826772b5322f85c

      SHA256

      dcb15467d678d24eb1dd478641fd18073ef33f2cc404c982763b90f664d7b54e

      SHA512

      8680bc725ab39eb055a78cc4ab01df9f7de17819ea69851714bc599bfb34a5aa7bb3ed07c8c24fd56ff795ae09c6d6d4246c4e12d3eb0fae66b2e4af3b065908

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      bd20d333b6629f29d517085fbc4b3c11

      SHA1

      dc6cda1698101f26bb7d2668137113834198d7b4

      SHA256

      42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343

      SHA512

      cd391b75546b22e06dc2085048285f70364a7439362b19c96f2e369844a57819f37f49493a45a33ce0c9442567defd40ef45536c135bd42e81b0a46ef780dfef

    • memory/804-151-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-238-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-214-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-208-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-205-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-217-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-220-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-226-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-235-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-232-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-229-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-211-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/804-223-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/1192-137-0x0000000070C70000-0x0000000070FC7000-memory.dmp

      Filesize

      3.3MB

    • memory/1192-136-0x0000000070AF0000-0x0000000070B3C000-memory.dmp

      Filesize

      304KB

    • memory/1896-147-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2624-160-0x00000000059E0000-0x0000000005D37000-memory.dmp

      Filesize

      3.3MB

    • memory/2624-162-0x00000000063A0000-0x00000000063EC000-memory.dmp

      Filesize

      304KB

    • memory/2624-163-0x0000000070A10000-0x0000000070A5C000-memory.dmp

      Filesize

      304KB

    • memory/2624-165-0x0000000070C20000-0x0000000070F77000-memory.dmp

      Filesize

      3.3MB

    • memory/2624-174-0x00000000071F0000-0x0000000007294000-memory.dmp

      Filesize

      656KB

    • memory/2624-175-0x0000000005D50000-0x0000000005D61000-memory.dmp

      Filesize

      68KB

    • memory/2624-176-0x0000000005D90000-0x0000000005DA5000-memory.dmp

      Filesize

      84KB

    • memory/2680-74-0x00000000075A0000-0x00000000075B1000-memory.dmp

      Filesize

      68KB

    • memory/2680-62-0x0000000005B80000-0x0000000005ED7000-memory.dmp

      Filesize

      3.3MB

    • memory/2680-63-0x0000000070AF0000-0x0000000070B3C000-memory.dmp

      Filesize

      304KB

    • memory/2680-64-0x0000000070D00000-0x0000000071057000-memory.dmp

      Filesize

      3.3MB

    • memory/2680-73-0x0000000007280000-0x0000000007324000-memory.dmp

      Filesize

      656KB

    • memory/2680-75-0x00000000075F0000-0x0000000007605000-memory.dmp

      Filesize

      84KB

    • memory/2924-3-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2924-148-0x0000000003F10000-0x00000000047FB000-memory.dmp

      Filesize

      8.9MB

    • memory/2924-1-0x0000000002120000-0x0000000002527000-memory.dmp

      Filesize

      4.0MB

    • memory/2924-120-0x0000000002120000-0x0000000002527000-memory.dmp

      Filesize

      4.0MB

    • memory/2924-2-0x0000000003F10000-0x00000000047FB000-memory.dmp

      Filesize

      8.9MB

    • memory/2924-99-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/3304-43-0x0000000007300000-0x000000000730A000-memory.dmp

      Filesize

      40KB

    • memory/3304-40-0x0000000004990000-0x00000000049A0000-memory.dmp

      Filesize

      64KB

    • memory/3304-47-0x0000000007380000-0x0000000007395000-memory.dmp

      Filesize

      84KB

    • memory/3304-46-0x0000000007370000-0x000000000737E000-memory.dmp

      Filesize

      56KB

    • memory/3304-6-0x0000000004FD0000-0x00000000055FA000-memory.dmp

      Filesize

      6.2MB

    • memory/3304-5-0x0000000074880000-0x0000000075031000-memory.dmp

      Filesize

      7.7MB

    • memory/3304-48-0x00000000073D0000-0x00000000073EA000-memory.dmp

      Filesize

      104KB

    • memory/3304-45-0x0000000007320000-0x0000000007331000-memory.dmp

      Filesize

      68KB

    • memory/3304-44-0x0000000007410000-0x00000000074A6000-memory.dmp

      Filesize

      600KB

    • memory/3304-10-0x0000000005770000-0x00000000057D6000-memory.dmp

      Filesize

      408KB

    • memory/3304-42-0x00000000072C0000-0x00000000072DA000-memory.dmp

      Filesize

      104KB

    • memory/3304-52-0x0000000074880000-0x0000000075031000-memory.dmp

      Filesize

      7.7MB

    • memory/3304-41-0x0000000007900000-0x0000000007F7A000-memory.dmp

      Filesize

      6.5MB

    • memory/3304-38-0x0000000004990000-0x00000000049A0000-memory.dmp

      Filesize

      64KB

    • memory/3304-39-0x0000000004990000-0x00000000049A0000-memory.dmp

      Filesize

      64KB

    • memory/3304-4-0x0000000004870000-0x00000000048A6000-memory.dmp

      Filesize

      216KB

    • memory/3304-37-0x0000000007190000-0x0000000007234000-memory.dmp

      Filesize

      656KB

    • memory/3304-25-0x0000000007110000-0x0000000007144000-memory.dmp

      Filesize

      208KB

    • memory/3304-27-0x0000000070B40000-0x0000000070E97000-memory.dmp

      Filesize

      3.3MB

    • memory/3304-36-0x0000000007170000-0x000000000718E000-memory.dmp

      Filesize

      120KB

    • memory/3304-26-0x0000000070AF0000-0x0000000070B3C000-memory.dmp

      Filesize

      304KB

    • memory/3304-24-0x000000007F9B0000-0x000000007F9C0000-memory.dmp

      Filesize

      64KB

    • memory/3304-7-0x0000000004990000-0x00000000049A0000-memory.dmp

      Filesize

      64KB

    • memory/3304-23-0x0000000006280000-0x00000000062C6000-memory.dmp

      Filesize

      280KB

    • memory/3304-49-0x00000000073C0000-0x00000000073C8000-memory.dmp

      Filesize

      32KB

    • memory/3304-8-0x0000000004E70000-0x0000000004E92000-memory.dmp

      Filesize

      136KB

    • memory/3304-22-0x0000000005D40000-0x0000000005D8C000-memory.dmp

      Filesize

      304KB

    • memory/3304-21-0x0000000005D00000-0x0000000005D1E000-memory.dmp

      Filesize

      120KB

    • memory/3304-20-0x00000000058F0000-0x0000000005C47000-memory.dmp

      Filesize

      3.3MB

    • memory/3304-11-0x00000000057E0000-0x0000000005846000-memory.dmp

      Filesize

      408KB

    • memory/3304-9-0x0000000004990000-0x00000000049A0000-memory.dmp

      Filesize

      64KB

    • memory/3860-189-0x0000000071350000-0x00000000716A7000-memory.dmp

      Filesize

      3.3MB

    • memory/3860-188-0x0000000070A10000-0x0000000070A5C000-memory.dmp

      Filesize

      304KB

    • memory/3860-186-0x0000000005D40000-0x0000000006097000-memory.dmp

      Filesize

      3.3MB

    • memory/4372-90-0x0000000070C70000-0x0000000070FC7000-memory.dmp

      Filesize

      3.3MB

    • memory/4372-89-0x0000000070AF0000-0x0000000070B3C000-memory.dmp

      Filesize

      304KB

    • memory/4372-87-0x0000000005F30000-0x0000000006287000-memory.dmp

      Filesize

      3.3MB

    • memory/4436-111-0x0000000070C70000-0x0000000070FC7000-memory.dmp

      Filesize

      3.3MB

    • memory/4436-110-0x0000000070AF0000-0x0000000070B3C000-memory.dmp

      Filesize

      304KB