Analysis

  • max time kernel
    149s
  • max time network
    138s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    26-04-2024 20:59

General

  • Target

    31170e131d7044b02f58494119ca6a3d9e124c32ad1d998ad57b1817ec31443f.exe

  • Size

    4.2MB

  • MD5

    c10260d38cf87a868cea639502863074

  • SHA1

    e4e314be6651d8cb63da0be0201c3a95f6033a76

  • SHA256

    31170e131d7044b02f58494119ca6a3d9e124c32ad1d998ad57b1817ec31443f

  • SHA512

    d676b6021b80719d5840d53146626d9a24c3d935dad45610ea02e1d53a24b0200d8bb7ab5fa25c9e00194d7e9c2fb265078d39eb4bbb1ba57fa6dabcc810d0fb

  • SSDEEP

    98304:9x1RyBW5eh1jvdHfL95CEfIBLRbKwJWZNSsbjNHIm:/fIvBT9wRBLRbbJ6NSsbZH1

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
  • 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\31170e131d7044b02f58494119ca6a3d9e124c32ad1d998ad57b1817ec31443f.exe
    "C:\Users\Admin\AppData\Local\Temp\31170e131d7044b02f58494119ca6a3d9e124c32ad1d998ad57b1817ec31443f.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4304
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1040
    • C:\Users\Admin\AppData\Local\Temp\31170e131d7044b02f58494119ca6a3d9e124c32ad1d998ad57b1817ec31443f.exe
      "C:\Users\Admin\AppData\Local\Temp\31170e131d7044b02f58494119ca6a3d9e124c32ad1d998ad57b1817ec31443f.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:960
      • 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:2892
      • 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:4472
        • 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:4732
      • 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:1032
      • 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:1380
      • 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:684
        • 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:2248
        • 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:2552
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:3664
          • 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:1420
          • 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:1072
          • 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:2860
          • 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:4732

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Persistence

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Impair Defenses

    1
    T1562

    Disable or Modify System Firewall

    1
    T1562.004

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_g1gjmslw.5lx.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

      1d0aadaa74c4c548cb22616da1f48842

      SHA1

      d0d95cacb0d88b0b897f5dc307944bd6b27daf05

      SHA256

      e0a558a64dc5ae8eba523bff393eda0491c280bcbe01448f646d36a78fa97790

      SHA512

      65c57a59774ef5a5db508708692634da042dcd75539f210f9249507173f304b47e4b91d32279612b902a597ce754b4ff1e921823f05cf662e2f3d7987e36d5f3

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

      19KB

      MD5

      05dd27a44458d62764de98f349c41a20

      SHA1

      8e47a79469df5998b79803880bec5f3bf2c86760

      SHA256

      8c14eab7d62f285b838c2b020da3a30af32d3d304295bf70b8237f2f359b87e7

      SHA512

      cc397082352c7467bef11c79377a16a601a67d3a59b2ceb625ee69a097b937468a024d3bb36b70f53369c912f1daf53af07f1632bd11fa612d53084888fa83b3

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

      19KB

      MD5

      6e52199679060ce20bd672bc359f4168

      SHA1

      775b02fb595f920f51668a1b8de3d7fa1446ca9f

      SHA256

      46bb2f47e81fed62b12d0746bfa85c0efb9715f753696a398eaa8028aef1ce92

      SHA512

      da6241f0c278297d8eac613b63bb36735654c57abf6dc6fcdcddbc2f6728d64b36fd44579434a25c669c9ba35459a3c6c5ee859283050293cb015f21fed6b850

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

      19KB

      MD5

      b015a4a665ec19d94a2a7b58a1efb500

      SHA1

      0581d137b93bfdd086de221be4a454acc6a26df1

      SHA256

      bcb2aafac8d2baf8d272b0e3144c7a827848786e033386eb548e7b4ada49d44d

      SHA512

      e41d1cded0dba40eb022eda9f4fbce86522035b89654d498430521371a162f8a029ed42003747318f4be69ab4f06c02ae00637a5d172111fedb79cdcc5d4787a

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

      19KB

      MD5

      13fc8705475672a809c8c049bcc5c225

      SHA1

      160a2b0c3898f628c910cca0ef73c4eb6aff1275

      SHA256

      eb1f5ade410fb352cf5762ce3779552ceb70ff524186f4e5fcc674469cedfc59

      SHA512

      1c433f7b51035cae8877c88b94ac2a672748a37ec09145600a64df84ea04c17af3aee0bcd1d88c3355ed8bb35fab3db8d84a6614d07825c32ba22dd363cae65f

    • C:\Windows\rss\csrss.exe
      Filesize

      4.2MB

      MD5

      c10260d38cf87a868cea639502863074

      SHA1

      e4e314be6651d8cb63da0be0201c3a95f6033a76

      SHA256

      31170e131d7044b02f58494119ca6a3d9e124c32ad1d998ad57b1817ec31443f

      SHA512

      d676b6021b80719d5840d53146626d9a24c3d935dad45610ea02e1d53a24b0200d8bb7ab5fa25c9e00194d7e9c2fb265078d39eb4bbb1ba57fa6dabcc810d0fb

    • memory/684-211-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-216-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-206-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-201-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-208-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-183-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-210-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-213-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-148-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-203-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-221-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-218-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/684-219-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/960-116-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/960-121-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/1032-86-0x0000000071320000-0x0000000071677000-memory.dmp
      Filesize

      3.3MB

    • memory/1032-85-0x00000000710D0000-0x000000007111C000-memory.dmp
      Filesize

      304KB

    • memory/1040-25-0x00000000710D0000-0x000000007111C000-memory.dmp
      Filesize

      304KB

    • memory/1040-41-0x0000000007A90000-0x0000000007AA1000-memory.dmp
      Filesize

      68KB

    • memory/1040-44-0x0000000007B40000-0x0000000007B5A000-memory.dmp
      Filesize

      104KB

    • memory/1040-45-0x0000000007B60000-0x0000000007B68000-memory.dmp
      Filesize

      32KB

    • memory/1040-48-0x0000000074E60000-0x0000000075611000-memory.dmp
      Filesize

      7.7MB

    • memory/1040-4-0x0000000002FA0000-0x0000000002FD6000-memory.dmp
      Filesize

      216KB

    • memory/1040-5-0x0000000074E60000-0x0000000075611000-memory.dmp
      Filesize

      7.7MB

    • memory/1040-6-0x00000000051F0000-0x0000000005200000-memory.dmp
      Filesize

      64KB

    • memory/1040-8-0x00000000051F0000-0x0000000005200000-memory.dmp
      Filesize

      64KB

    • memory/1040-7-0x0000000005830000-0x0000000005E5A000-memory.dmp
      Filesize

      6.2MB

    • memory/1040-9-0x00000000055C0000-0x00000000055E2000-memory.dmp
      Filesize

      136KB

    • memory/1040-11-0x0000000005F40000-0x0000000005FA6000-memory.dmp
      Filesize

      408KB

    • memory/1040-42-0x0000000007AE0000-0x0000000007AEE000-memory.dmp
      Filesize

      56KB

    • memory/1040-35-0x00000000078E0000-0x00000000078FE000-memory.dmp
      Filesize

      120KB

    • memory/1040-40-0x0000000007B80000-0x0000000007C16000-memory.dmp
      Filesize

      600KB

    • memory/1040-39-0x0000000007A70000-0x0000000007A7A000-memory.dmp
      Filesize

      40KB

    • memory/1040-10-0x0000000005ED0000-0x0000000005F36000-memory.dmp
      Filesize

      408KB

    • memory/1040-38-0x0000000007A30000-0x0000000007A4A000-memory.dmp
      Filesize

      104KB

    • memory/1040-20-0x0000000005FB0000-0x0000000006307000-memory.dmp
      Filesize

      3.3MB

    • memory/1040-21-0x0000000006480000-0x000000000649E000-memory.dmp
      Filesize

      120KB

    • memory/1040-43-0x0000000007AF0000-0x0000000007B05000-memory.dmp
      Filesize

      84KB

    • memory/1040-37-0x0000000008070000-0x00000000086EA000-memory.dmp
      Filesize

      6.5MB

    • memory/1040-24-0x0000000007880000-0x00000000078B4000-memory.dmp
      Filesize

      208KB

    • memory/1040-22-0x00000000064B0000-0x00000000064FC000-memory.dmp
      Filesize

      304KB

    • memory/1040-26-0x0000000071260000-0x00000000715B7000-memory.dmp
      Filesize

      3.3MB

    • memory/1040-23-0x0000000006A20000-0x0000000006A66000-memory.dmp
      Filesize

      280KB

    • memory/1040-36-0x0000000007900000-0x00000000079A4000-memory.dmp
      Filesize

      656KB

    • memory/1072-184-0x0000000070FF0000-0x000000007103C000-memory.dmp
      Filesize

      304KB

    • memory/1072-185-0x0000000071170000-0x00000000714C7000-memory.dmp
      Filesize

      3.3MB

    • memory/1380-104-0x0000000005C70000-0x0000000005FC7000-memory.dmp
      Filesize

      3.3MB

    • memory/1380-106-0x00000000710D0000-0x000000007111C000-memory.dmp
      Filesize

      304KB

    • memory/1380-107-0x0000000071250000-0x00000000715A7000-memory.dmp
      Filesize

      3.3MB

    • memory/1420-170-0x0000000007AD0000-0x0000000007B74000-memory.dmp
      Filesize

      656KB

    • memory/1420-159-0x0000000006860000-0x00000000068AC000-memory.dmp
      Filesize

      304KB

    • memory/1420-161-0x0000000071170000-0x00000000714C7000-memory.dmp
      Filesize

      3.3MB

    • memory/1420-171-0x0000000007E10000-0x0000000007E21000-memory.dmp
      Filesize

      68KB

    • memory/1420-172-0x00000000061E0000-0x00000000061F5000-memory.dmp
      Filesize

      84KB

    • memory/1420-157-0x00000000064A0000-0x00000000067F7000-memory.dmp
      Filesize

      3.3MB

    • memory/1420-160-0x0000000070FF0000-0x000000007103C000-memory.dmp
      Filesize

      304KB

    • memory/2248-134-0x00000000710D0000-0x000000007111C000-memory.dmp
      Filesize

      304KB

    • memory/2248-135-0x0000000071250000-0x00000000715A7000-memory.dmp
      Filesize

      3.3MB

    • memory/2892-60-0x0000000071320000-0x0000000071677000-memory.dmp
      Filesize

      3.3MB

    • memory/2892-71-0x0000000007160000-0x0000000007175000-memory.dmp
      Filesize

      84KB

    • memory/2892-70-0x0000000007110000-0x0000000007121000-memory.dmp
      Filesize

      68KB

    • memory/2892-69-0x0000000006DC0000-0x0000000006E64000-memory.dmp
      Filesize

      656KB

    • memory/2892-59-0x00000000710D0000-0x000000007111C000-memory.dmp
      Filesize

      304KB

    • memory/2892-58-0x0000000005680000-0x00000000059D7000-memory.dmp
      Filesize

      3.3MB

    • memory/4304-117-0x00000000046F0000-0x0000000004AF6000-memory.dmp
      Filesize

      4.0MB

    • memory/4304-1-0x00000000046F0000-0x0000000004AF6000-memory.dmp
      Filesize

      4.0MB

    • memory/4304-74-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/4304-145-0x0000000006D30000-0x000000000761B000-memory.dmp
      Filesize

      8.9MB

    • memory/4304-3-0x0000000000400000-0x000000000441C000-memory.dmp
      Filesize

      64.1MB

    • memory/4304-2-0x0000000006D30000-0x000000000761B000-memory.dmp
      Filesize

      8.9MB