Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    17-05-2024 13:04

General

  • Target

    b2b572a9f0b0d9a7e1ee8afb6cfbbe8e9814a74dba2c8d81fea35a28ebe97450.exe

  • Size

    4.1MB

  • MD5

    f61920d557fd6487a9a7ee0b5b772b63

  • SHA1

    338db365ab279d1e2fbdd339183f6a92ef09196b

  • SHA256

    b2b572a9f0b0d9a7e1ee8afb6cfbbe8e9814a74dba2c8d81fea35a28ebe97450

  • SHA512

    bdeaebb36d1aaf959c74c65f12eadf630c4bff2a477d839d6f4f0ec04d53da272efd1bccc950591881d952e130b8fcad693ea1040f656034544c0ec924827804

  • SSDEEP

    98304:PhzlfCz+ccJ0CpUiRHjJlGcG1klIkRd3fLKEvn:5z9CiccJ0CpfGcGG1DfLt

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
  • 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\b2b572a9f0b0d9a7e1ee8afb6cfbbe8e9814a74dba2c8d81fea35a28ebe97450.exe
    "C:\Users\Admin\AppData\Local\Temp\b2b572a9f0b0d9a7e1ee8afb6cfbbe8e9814a74dba2c8d81fea35a28ebe97450.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3732
    • 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:2312
    • C:\Users\Admin\AppData\Local\Temp\b2b572a9f0b0d9a7e1ee8afb6cfbbe8e9814a74dba2c8d81fea35a28ebe97450.exe
      "C:\Users\Admin\AppData\Local\Temp\b2b572a9f0b0d9a7e1ee8afb6cfbbe8e9814a74dba2c8d81fea35a28ebe97450.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:4940
      • 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:1072
      • 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:4720
        • 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:2128
      • 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:2700
      • 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:1956
      • 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:1364
        • 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:4996
        • 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:1600
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1744
          • 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:3796
          • 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:564
          • 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:4744
          • 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:480

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_khanmz3p.uzv.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

      54e73c00cc69af4de5e0738f9444af2d

      SHA1

      b41facfee4f0972fa73318074a0daa58cb6e8cb3

      SHA256

      2a5b20bd219e6b4010728e3c7700a4bc5c1d486e9f4bf9c4d7b08d4e5c88994d

      SHA512

      8e5c26d9f235621f8b5d26194562a16537b65939b976e9b4430ea43c4fb081cf7fe3db983774e39df9af67b0f12c1f93f1476233eb9e1312c6d8d0da0b1e4f48

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

      Filesize

      19KB

      MD5

      ed24a0e16ac6660f4250fcd32aef3113

      SHA1

      17a8cce6ce58d0679be43ecba11935ef75f0996c

      SHA256

      63de5cf7a0164e3fb032f6760eaca8f9b798bcc98ad569a439d94c4309b0b137

      SHA512

      45a3ffd477205363816f56c1565839b2b8353ad294f56f0f2059d28f6e30eed86f8986d7ef2cf3eb5cd69a3035dbaad8ca9b6b1642c19928d4055df2695d9356

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

      Filesize

      19KB

      MD5

      94cf40ba9d88ff64ead6e0495673c6f5

      SHA1

      95763d5df30505607c7978a2ffc96d11b1fd0109

      SHA256

      cf4337e7eb0f7330f0eccc9ad420ce942fe009f2d77e1d89faac831da1475c2e

      SHA512

      cfbe19c19d81e0ece9b5bf4fc756691710e8403eacb17b6b41553d7407e260da18bb10c79de3eb5efb397249430f956d4518575b714f812e5980d5997c0425c2

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

      Filesize

      19KB

      MD5

      b18a3b9aa2337975d63ffabe64dc4cd6

      SHA1

      e4d6aaa063767483ced8ea615144510ac349c41d

      SHA256

      2a0b006b291625c31b6adaf1646d7da884330cff5053fdfc1a94722e64959b45

      SHA512

      e2297010d8ba0f364118627aff6a18af7c9e8a3a94cff06d627757d7d9b7da1fbd998044538b3c63b07d4050e81da2eead085546466110d93c9648db9dea4cc6

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

      Filesize

      19KB

      MD5

      7f9ed84fcac64cf29bbb45672dd50fe3

      SHA1

      e2820f2798f20f86753f5edf17889656d85fb6a8

      SHA256

      321cd36b0e288c565da63e0982bc6ca9d5666ddc5f2baff1566b2c3434cc83c2

      SHA512

      906ed6dc91d9210aae26afd88b59b3939f8f14ad789994587ffc7398fd99bbfd1c9c65da710b53062783e3067e8db00dd1f4d8102318fab19efc06366d9b2ed7

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      f61920d557fd6487a9a7ee0b5b772b63

      SHA1

      338db365ab279d1e2fbdd339183f6a92ef09196b

      SHA256

      b2b572a9f0b0d9a7e1ee8afb6cfbbe8e9814a74dba2c8d81fea35a28ebe97450

      SHA512

      bdeaebb36d1aaf959c74c65f12eadf630c4bff2a477d839d6f4f0ec04d53da272efd1bccc950591881d952e130b8fcad693ea1040f656034544c0ec924827804

    • memory/564-188-0x0000000070BC0000-0x0000000070C0C000-memory.dmp

      Filesize

      304KB

    • memory/564-189-0x0000000070E10000-0x0000000071167000-memory.dmp

      Filesize

      3.3MB

    • memory/1072-78-0x0000000007650000-0x0000000007665000-memory.dmp

      Filesize

      84KB

    • memory/1072-66-0x0000000070CA0000-0x0000000070CEC000-memory.dmp

      Filesize

      304KB

    • memory/1072-67-0x0000000070E40000-0x0000000071197000-memory.dmp

      Filesize

      3.3MB

    • memory/1072-65-0x0000000005AF0000-0x0000000005E47000-memory.dmp

      Filesize

      3.3MB

    • memory/1072-76-0x00000000072C0000-0x0000000007364000-memory.dmp

      Filesize

      656KB

    • memory/1072-77-0x0000000007600000-0x0000000007611000-memory.dmp

      Filesize

      68KB

    • memory/1364-213-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/1364-222-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/1364-225-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/1364-228-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/1364-231-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/1364-219-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/1364-216-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/1364-207-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/1364-198-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/1364-210-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/1956-114-0x0000000070E20000-0x0000000071177000-memory.dmp

      Filesize

      3.3MB

    • memory/1956-113-0x0000000070CA0000-0x0000000070CEC000-memory.dmp

      Filesize

      304KB

    • memory/1956-111-0x0000000005DD0000-0x0000000006127000-memory.dmp

      Filesize

      3.3MB

    • memory/2312-38-0x0000000007530000-0x00000000075D4000-memory.dmp

      Filesize

      656KB

    • memory/2312-27-0x0000000070CA0000-0x0000000070CEC000-memory.dmp

      Filesize

      304KB

    • memory/2312-48-0x0000000007780000-0x0000000007788000-memory.dmp

      Filesize

      32KB

    • memory/2312-51-0x0000000074A30000-0x00000000751E1000-memory.dmp

      Filesize

      7.7MB

    • memory/2312-4-0x0000000074A3E000-0x0000000074A3F000-memory.dmp

      Filesize

      4KB

    • memory/2312-5-0x0000000004C20000-0x0000000004C56000-memory.dmp

      Filesize

      216KB

    • memory/2312-6-0x0000000005400000-0x0000000005A2A000-memory.dmp

      Filesize

      6.2MB

    • memory/2312-7-0x0000000074A30000-0x00000000751E1000-memory.dmp

      Filesize

      7.7MB

    • memory/2312-46-0x0000000007710000-0x0000000007725000-memory.dmp

      Filesize

      84KB

    • memory/2312-45-0x0000000007700000-0x000000000770E000-memory.dmp

      Filesize

      56KB

    • memory/2312-39-0x0000000007C90000-0x000000000830A000-memory.dmp

      Filesize

      6.5MB

    • memory/2312-40-0x0000000007650000-0x000000000766A000-memory.dmp

      Filesize

      104KB

    • memory/2312-41-0x0000000074A30000-0x00000000751E1000-memory.dmp

      Filesize

      7.7MB

    • memory/2312-42-0x0000000007690000-0x000000000769A000-memory.dmp

      Filesize

      40KB

    • memory/2312-8-0x0000000074A30000-0x00000000751E1000-memory.dmp

      Filesize

      7.7MB

    • memory/2312-44-0x00000000076B0000-0x00000000076C1000-memory.dmp

      Filesize

      68KB

    • memory/2312-43-0x00000000077A0000-0x0000000007836000-memory.dmp

      Filesize

      600KB

    • memory/2312-9-0x0000000005270000-0x0000000005292000-memory.dmp

      Filesize

      136KB

    • memory/2312-10-0x0000000005390000-0x00000000053F6000-memory.dmp

      Filesize

      408KB

    • memory/2312-28-0x0000000070EF0000-0x0000000071247000-memory.dmp

      Filesize

      3.3MB

    • memory/2312-37-0x0000000007510000-0x000000000752E000-memory.dmp

      Filesize

      120KB

    • memory/2312-11-0x0000000005B30000-0x0000000005B96000-memory.dmp

      Filesize

      408KB

    • memory/2312-25-0x0000000074A30000-0x00000000751E1000-memory.dmp

      Filesize

      7.7MB

    • memory/2312-26-0x00000000074B0000-0x00000000074E4000-memory.dmp

      Filesize

      208KB

    • memory/2312-20-0x0000000005BA0000-0x0000000005EF7000-memory.dmp

      Filesize

      3.3MB

    • memory/2312-47-0x0000000007760000-0x000000000777A000-memory.dmp

      Filesize

      104KB

    • memory/2312-21-0x0000000006090000-0x00000000060AE000-memory.dmp

      Filesize

      120KB

    • memory/2312-22-0x0000000006150000-0x000000000619C000-memory.dmp

      Filesize

      304KB

    • memory/2312-23-0x0000000006610000-0x0000000006656000-memory.dmp

      Filesize

      280KB

    • memory/2700-92-0x0000000070CA0000-0x0000000070CEC000-memory.dmp

      Filesize

      304KB

    • memory/2700-93-0x0000000070EF0000-0x0000000071247000-memory.dmp

      Filesize

      3.3MB

    • memory/3732-1-0x00000000049D0000-0x0000000004DD6000-memory.dmp

      Filesize

      4.0MB

    • memory/3732-2-0x0000000004DE0000-0x00000000056CB000-memory.dmp

      Filesize

      8.9MB

    • memory/3732-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/3732-52-0x00000000049D0000-0x0000000004DD6000-memory.dmp

      Filesize

      4.0MB

    • memory/3732-54-0x0000000004DE0000-0x00000000056CB000-memory.dmp

      Filesize

      8.9MB

    • memory/3732-24-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/3732-56-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/3732-55-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/3796-175-0x0000000007090000-0x00000000070A1000-memory.dmp

      Filesize

      68KB

    • memory/3796-153-0x0000000005540000-0x0000000005897000-memory.dmp

      Filesize

      3.3MB

    • memory/3796-177-0x00000000058D0000-0x00000000058E5000-memory.dmp

      Filesize

      84KB

    • memory/3796-174-0x0000000006D20000-0x0000000006DC4000-memory.dmp

      Filesize

      656KB

    • memory/3796-165-0x0000000070E10000-0x0000000071167000-memory.dmp

      Filesize

      3.3MB

    • memory/3796-164-0x0000000070BC0000-0x0000000070C0C000-memory.dmp

      Filesize

      304KB

    • memory/3796-163-0x0000000005B10000-0x0000000005B5C000-memory.dmp

      Filesize

      304KB

    • memory/4940-130-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/4940-79-0x0000000000400000-0x0000000002B0D000-memory.dmp

      Filesize

      39.1MB

    • memory/4996-141-0x0000000070CA0000-0x0000000070CEC000-memory.dmp

      Filesize

      304KB

    • memory/4996-142-0x0000000070E20000-0x0000000071177000-memory.dmp

      Filesize

      3.3MB