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Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    18/05/2024, 11:52

General

  • Target

    3b668a9058993f472824dc4acf46a0bd31986fd8ce51686dd65d620967f554e9.exe

  • Size

    4.1MB

  • MD5

    fbb4b14002cf63fb5d71d1398c4a7de6

  • SHA1

    4845ce2c35974330310f79ae5aade376fdb39865

  • SHA256

    3b668a9058993f472824dc4acf46a0bd31986fd8ce51686dd65d620967f554e9

  • SHA512

    191eac97109aa8c68a26214cc6a5abf20bf26716de04d5471b67e55f7132762ea91a483e0df504c77ef195b4595ff060ba2739d293d097a02948d430cc63c3ae

  • SSDEEP

    98304:IZ9bi3QNEOtUId2petU9sYIhWVMAA4+H1:B303UIApyYIhWVME8

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\3b668a9058993f472824dc4acf46a0bd31986fd8ce51686dd65d620967f554e9.exe
    "C:\Users\Admin\AppData\Local\Temp\3b668a9058993f472824dc4acf46a0bd31986fd8ce51686dd65d620967f554e9.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4624
    • 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:4248
    • C:\Users\Admin\AppData\Local\Temp\3b668a9058993f472824dc4acf46a0bd31986fd8ce51686dd65d620967f554e9.exe
      "C:\Users\Admin\AppData\Local\Temp\3b668a9058993f472824dc4acf46a0bd31986fd8ce51686dd65d620967f554e9.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:2396
      • 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:4528
      • 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:4776
        • 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:3284
      • 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:3928
      • 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:1936
      • 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:3684
        • 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:1484
        • 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:2060
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4504
          • 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:3424
          • 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:3776
          • 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:4776
          • 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:3916

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nwo1hn2f.gle.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

      934a71f81b2ecfc179e9e28546a424ee

      SHA1

      6406b705dbaa709e80f1bdad09dff61098c0c7df

      SHA256

      8f03c562806f3c59c14b830d978e083e43f71b35c3ab3b19654a4425144f043f

      SHA512

      72da0d1290053a4e8b087be7e3861e904e13c2084ed7aef9635db4618e6579a3d26fda3639714daef12aaa1d81458f85c021531c88b98c86ab79557a25a057e6

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

      Filesize

      19KB

      MD5

      6bcb485369df29d102bdcf3532c01ca2

      SHA1

      2775df888641188b7830c06da8ebd234ac03b588

      SHA256

      33abb0b486091904e51520ea3e2729ad431bde429bc974a0f710f670c2024205

      SHA512

      597c2c4179293379e8c611231c01859c11252165bced100f1f88f1f20abc26601477c6ac0cc289850dab8c5ca0d7c3d7576c5db7818c03c61d82e0792e7bb3a8

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

      Filesize

      19KB

      MD5

      b500b0ee91ae87fc0a15ce99388da142

      SHA1

      ac7c2c18175d04548f1240d9e1a7177471bbad2f

      SHA256

      759988231ca5854eb97820faf5fc15b017f7bb96f90cd6b3f68d9cfec463c746

      SHA512

      7ebf41aa4e535f3c29fa3a4cabeedf3aacfbc46a7e5610330669353a520cf7fad11105a0c22eb28168bf2131caa00f7083848a917fb7384f0f1f1c8614c2b7f8

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

      Filesize

      19KB

      MD5

      1fb0db0a402ca2921f57ad817bde2b37

      SHA1

      e72d614727ba8f7aea9b60f20d2eb2745e51c365

      SHA256

      60c4f72c8fd1add6d9eef8bbd120f5c225ece24501e2b1a75c3934a15f0b29f5

      SHA512

      f13250d36b5cbe94e0761ecb4afdcca184f650416d7f8aa9d1ea1d36047b49c85daa5ba7066594bc9540acad8cc2cb7182184a5f06e16a404d8bc8cf12183414

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

      Filesize

      19KB

      MD5

      3fb09dd1049e3c4a556d850de5fb1eec

      SHA1

      e75fe5806198c3d0bd0add7d34e68817a256107d

      SHA256

      397e8290b2b2f06639f01ac176f1a4b1816b135ea819897b68192dd3363db2c7

      SHA512

      7e1875a833365d14e6c5fb8a729a860b91f6ba18d6f1872ce32cc1c1169959dac9b00e39a0be0934ddf9e833f36ffb32f62714ca373cd015b03054d203f8ee5d

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      fbb4b14002cf63fb5d71d1398c4a7de6

      SHA1

      4845ce2c35974330310f79ae5aade376fdb39865

      SHA256

      3b668a9058993f472824dc4acf46a0bd31986fd8ce51686dd65d620967f554e9

      SHA512

      191eac97109aa8c68a26214cc6a5abf20bf26716de04d5471b67e55f7132762ea91a483e0df504c77ef195b4595ff060ba2739d293d097a02948d430cc63c3ae

    • memory/1484-139-0x0000000071020000-0x0000000071377000-memory.dmp

      Filesize

      3.3MB

    • memory/1484-150-0x0000000005FF0000-0x0000000006005000-memory.dmp

      Filesize

      84KB

    • memory/1484-149-0x0000000007C50000-0x0000000007C61000-memory.dmp

      Filesize

      68KB

    • memory/1484-148-0x00000000078A0000-0x0000000007944000-memory.dmp

      Filesize

      656KB

    • memory/1484-135-0x0000000006100000-0x0000000006457000-memory.dmp

      Filesize

      3.3MB

    • memory/1484-137-0x0000000006B80000-0x0000000006BCC000-memory.dmp

      Filesize

      304KB

    • memory/1484-138-0x0000000070EA0000-0x0000000070EEC000-memory.dmp

      Filesize

      304KB

    • memory/1936-112-0x0000000071140000-0x0000000071497000-memory.dmp

      Filesize

      3.3MB

    • memory/1936-111-0x0000000070F40000-0x0000000070F8C000-memory.dmp

      Filesize

      304KB

    • memory/2396-151-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3424-161-0x0000000006320000-0x0000000006677000-memory.dmp

      Filesize

      3.3MB

    • memory/3424-176-0x0000000006130000-0x0000000006145000-memory.dmp

      Filesize

      84KB

    • memory/3424-175-0x0000000007CF0000-0x0000000007D01000-memory.dmp

      Filesize

      68KB

    • memory/3424-174-0x00000000079B0000-0x0000000007A54000-memory.dmp

      Filesize

      656KB

    • memory/3424-164-0x0000000070DC0000-0x0000000070E0C000-memory.dmp

      Filesize

      304KB

    • memory/3424-165-0x0000000070F40000-0x0000000071297000-memory.dmp

      Filesize

      3.3MB

    • memory/3424-163-0x00000000067C0000-0x000000000680C000-memory.dmp

      Filesize

      304KB

    • memory/3684-217-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-212-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-228-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-211-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-227-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-219-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-215-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-220-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-205-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-223-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-207-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-225-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3684-209-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/3776-188-0x0000000070DC0000-0x0000000070E0C000-memory.dmp

      Filesize

      304KB

    • memory/3776-189-0x0000000071700000-0x0000000071A57000-memory.dmp

      Filesize

      3.3MB

    • memory/3776-186-0x0000000006080000-0x00000000063D7000-memory.dmp

      Filesize

      3.3MB

    • memory/3928-92-0x00000000710C0000-0x0000000071417000-memory.dmp

      Filesize

      3.3MB

    • memory/3928-91-0x0000000070F40000-0x0000000070F8C000-memory.dmp

      Filesize

      304KB

    • memory/3928-89-0x0000000005D10000-0x0000000006067000-memory.dmp

      Filesize

      3.3MB

    • memory/4248-37-0x0000000007290000-0x0000000007334000-memory.dmp

      Filesize

      656KB

    • memory/4248-38-0x0000000074BC0000-0x0000000075371000-memory.dmp

      Filesize

      7.7MB

    • memory/4248-4-0x0000000074BCE000-0x0000000074BCF000-memory.dmp

      Filesize

      4KB

    • memory/4248-5-0x0000000004970000-0x00000000049A6000-memory.dmp

      Filesize

      216KB

    • memory/4248-6-0x0000000074BC0000-0x0000000075371000-memory.dmp

      Filesize

      7.7MB

    • memory/4248-7-0x0000000004FE0000-0x000000000560A000-memory.dmp

      Filesize

      6.2MB

    • memory/4248-8-0x0000000074BC0000-0x0000000075371000-memory.dmp

      Filesize

      7.7MB

    • memory/4248-9-0x0000000004F60000-0x0000000004F82000-memory.dmp

      Filesize

      136KB

    • memory/4248-10-0x0000000005840000-0x00000000058A6000-memory.dmp

      Filesize

      408KB

    • memory/4248-11-0x00000000058B0000-0x0000000005916000-memory.dmp

      Filesize

      408KB

    • memory/4248-20-0x0000000005920000-0x0000000005C77000-memory.dmp

      Filesize

      3.3MB

    • memory/4248-50-0x0000000074BC0000-0x0000000075371000-memory.dmp

      Filesize

      7.7MB

    • memory/4248-47-0x00000000074F0000-0x00000000074F8000-memory.dmp

      Filesize

      32KB

    • memory/4248-46-0x00000000074D0000-0x00000000074EA000-memory.dmp

      Filesize

      104KB

    • memory/4248-45-0x0000000007480000-0x0000000007495000-memory.dmp

      Filesize

      84KB

    • memory/4248-44-0x0000000007470000-0x000000000747E000-memory.dmp

      Filesize

      56KB

    • memory/4248-43-0x0000000007420000-0x0000000007431000-memory.dmp

      Filesize

      68KB

    • memory/4248-42-0x0000000007510000-0x00000000075A6000-memory.dmp

      Filesize

      600KB

    • memory/4248-41-0x0000000007400000-0x000000000740A000-memory.dmp

      Filesize

      40KB

    • memory/4248-39-0x0000000007A00000-0x000000000807A000-memory.dmp

      Filesize

      6.5MB

    • memory/4248-40-0x00000000073C0000-0x00000000073DA000-memory.dmp

      Filesize

      104KB

    • memory/4248-21-0x0000000005E00000-0x0000000005E1E000-memory.dmp

      Filesize

      120KB

    • memory/4248-22-0x0000000005E50000-0x0000000005E9C000-memory.dmp

      Filesize

      304KB

    • memory/4248-36-0x0000000007270000-0x000000000728E000-memory.dmp

      Filesize

      120KB

    • memory/4248-26-0x0000000070FB0000-0x0000000071307000-memory.dmp

      Filesize

      3.3MB

    • memory/4248-27-0x0000000074BC0000-0x0000000075371000-memory.dmp

      Filesize

      7.7MB

    • memory/4248-25-0x0000000070E30000-0x0000000070E7C000-memory.dmp

      Filesize

      304KB

    • memory/4248-24-0x0000000007230000-0x0000000007264000-memory.dmp

      Filesize

      208KB

    • memory/4248-23-0x00000000063B0000-0x00000000063F6000-memory.dmp

      Filesize

      280KB

    • memory/4528-75-0x0000000006DC0000-0x0000000006E64000-memory.dmp

      Filesize

      656KB

    • memory/4528-77-0x0000000007160000-0x0000000007175000-memory.dmp

      Filesize

      84KB

    • memory/4528-60-0x0000000005630000-0x0000000005987000-memory.dmp

      Filesize

      3.3MB

    • memory/4528-64-0x0000000005BB0000-0x0000000005BFC000-memory.dmp

      Filesize

      304KB

    • memory/4528-66-0x0000000071140000-0x0000000071497000-memory.dmp

      Filesize

      3.3MB

    • memory/4528-65-0x0000000070F40000-0x0000000070F8C000-memory.dmp

      Filesize

      304KB

    • memory/4528-76-0x0000000007110000-0x0000000007121000-memory.dmp

      Filesize

      68KB

    • memory/4624-53-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4624-54-0x0000000004C80000-0x000000000556B000-memory.dmp

      Filesize

      8.9MB

    • memory/4624-51-0x0000000000400000-0x0000000002B08000-memory.dmp

      Filesize

      39.0MB

    • memory/4624-1-0x0000000004780000-0x0000000004B80000-memory.dmp

      Filesize

      4.0MB

    • memory/4624-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4624-2-0x0000000004C80000-0x000000000556B000-memory.dmp

      Filesize

      8.9MB