Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    28/04/2024, 11:53

General

  • Target

    4486a612069791e66e8e88818ccf5d1c5274a70e332d97dab2a3aa8347021fe1.exe

  • Size

    4.2MB

  • MD5

    f3919446f89a8b9dc4035f4ad1a1a7a5

  • SHA1

    5aeb012f5dfb0c1e7d6381fd62aca301abd0ba70

  • SHA256

    4486a612069791e66e8e88818ccf5d1c5274a70e332d97dab2a3aa8347021fe1

  • SHA512

    82acd6c273541a25042da4a3e5959a3096395e0b588c1c7aa34d1a7e82931f4b23294e4f87c31427c5d153b25c0132b2448b36f24f30e2ba00fcc9e6ea9df051

  • SSDEEP

    98304:AmzEVzSqSKvhGfCRRAYEemfBF+/eISc+EV6Wh9Npj16ZSvtZHZH:+xzpGf6+3fBMKo6wNr2SvtXH

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\4486a612069791e66e8e88818ccf5d1c5274a70e332d97dab2a3aa8347021fe1.exe
    "C:\Users\Admin\AppData\Local\Temp\4486a612069791e66e8e88818ccf5d1c5274a70e332d97dab2a3aa8347021fe1.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4244
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3208
    • C:\Users\Admin\AppData\Local\Temp\4486a612069791e66e8e88818ccf5d1c5274a70e332d97dab2a3aa8347021fe1.exe
      "C:\Users\Admin\AppData\Local\Temp\4486a612069791e66e8e88818ccf5d1c5274a70e332d97dab2a3aa8347021fe1.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:1408
      • 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:5072
      • 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:4836
        • 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:4220
      • 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:4756
      • 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:3888
      • 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:420
        • 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:2092
        • 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:1540
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:2932
          • 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:5004
          • 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:5000
          • 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:4412
          • 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:1592

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_avy5bwcx.j0a.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

            ad1c62dd24541a2c07996100ae0d48eb

            SHA1

            6f51e4c94610d916033ce33f9176974bc2fe6fbb

            SHA256

            c7f61f567dc8ee98fb3294298f07aecc4da83150387a2975e6af0616aaa0526a

            SHA512

            167acf9c5431e7fb1a22bbf2b44034df5a5a1b066c7f1bdc9e678e13e66ae923c010c430fc8388e927415c39d99e083f503f359d8a5048ad70aa6310d7bc5837

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

            Filesize

            19KB

            MD5

            697ee7b8b327f98c2e6909017db02ba5

            SHA1

            62575638bf02b92e977d362a5fd51b06b2ff1f3d

            SHA256

            56dd6223c7cc559af5d7ad8ebd0b339499f1f22c0f8b8e2ea251805fb72b5551

            SHA512

            6bd073774fe7f3884872ee12754bea3cdee8c3edb95d4080284104c392b1493a5c50e0112989ab9c15773825133d0dae43cbfd52ea6f76f624ab3ae45744051c

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

            Filesize

            19KB

            MD5

            2844bda4777e284c0e5861ae1e180a1a

            SHA1

            abda7f7f5e8b909dfe77df137d749d291180127b

            SHA256

            8ad7eea768dad0985e189b4c4ee0376137b580b6b574074ab3500b96b79b6a8a

            SHA512

            8c6d52a8fc130e7a5c56a99b42d769a0efb4423f17255f733ec33aa5ae3d8cccca5e657d5d56b5f886d056bd94be6e9cfed342b2728056a3d75941ce26e2474d

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

            Filesize

            19KB

            MD5

            2deb9215b0289dae23d260cbe9d2d4fb

            SHA1

            fd7ba597bf44575a1f808953e3cecfc386f66ab3

            SHA256

            73d7e2909d576a1289c8dffe47234d0dd8cb38b6da032061a89b096fc84030ff

            SHA512

            7bb093749130e5367ba79afb06e630b2a641db9de06fdadc9eafb056a86fd4901e9cc12dda1eb2b2e98a1e61b56271db9ed1626674e451847144a525db8d6f34

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

            Filesize

            19KB

            MD5

            66a4639fcd08257e2a31205410bd1b99

            SHA1

            450fc426049da22b309ce3600fa012aa03574397

            SHA256

            98b21347aed16e409792830cc5ecc7131e484591fb82a3cf2d0b4615b053b2d4

            SHA512

            170d7314001e9bfc41a645a38cc219120998af2fbfa3ee4afcfc0ea12d7e84e6d1d4895e901ed370c394f17d9449743b89cad5caeeb661308fa7e57635638be1

          • C:\Windows\rss\csrss.exe

            Filesize

            4.2MB

            MD5

            f3919446f89a8b9dc4035f4ad1a1a7a5

            SHA1

            5aeb012f5dfb0c1e7d6381fd62aca301abd0ba70

            SHA256

            4486a612069791e66e8e88818ccf5d1c5274a70e332d97dab2a3aa8347021fe1

            SHA512

            82acd6c273541a25042da4a3e5959a3096395e0b588c1c7aa34d1a7e82931f4b23294e4f87c31427c5d153b25c0132b2448b36f24f30e2ba00fcc9e6ea9df051

          • memory/420-204-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-216-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-208-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-210-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-212-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-197-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-214-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-206-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-149-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-224-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-222-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-218-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/420-220-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/1408-125-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/2092-137-0x00000000702E0000-0x000000007032C000-memory.dmp

            Filesize

            304KB

          • memory/2092-138-0x0000000070530000-0x0000000070887000-memory.dmp

            Filesize

            3.3MB

          • memory/3208-36-0x0000000007B20000-0x0000000007B3E000-memory.dmp

            Filesize

            120KB

          • memory/3208-27-0x0000000070460000-0x00000000707B7000-memory.dmp

            Filesize

            3.3MB

          • memory/3208-43-0x0000000007DC0000-0x0000000007E56000-memory.dmp

            Filesize

            600KB

          • memory/3208-44-0x0000000007CD0000-0x0000000007CE1000-memory.dmp

            Filesize

            68KB

          • memory/3208-45-0x0000000007D20000-0x0000000007D2E000-memory.dmp

            Filesize

            56KB

          • memory/3208-46-0x0000000007D30000-0x0000000007D45000-memory.dmp

            Filesize

            84KB

          • memory/3208-47-0x0000000007D80000-0x0000000007D9A000-memory.dmp

            Filesize

            104KB

          • memory/3208-48-0x0000000007DA0000-0x0000000007DA8000-memory.dmp

            Filesize

            32KB

          • memory/3208-51-0x0000000074070000-0x0000000074821000-memory.dmp

            Filesize

            7.7MB

          • memory/3208-4-0x0000000005200000-0x0000000005236000-memory.dmp

            Filesize

            216KB

          • memory/3208-6-0x0000000005260000-0x0000000005270000-memory.dmp

            Filesize

            64KB

          • memory/3208-7-0x0000000005260000-0x0000000005270000-memory.dmp

            Filesize

            64KB

          • memory/3208-5-0x0000000074070000-0x0000000074821000-memory.dmp

            Filesize

            7.7MB

          • memory/3208-8-0x00000000058A0000-0x0000000005ECA000-memory.dmp

            Filesize

            6.2MB

          • memory/3208-41-0x0000000007C70000-0x0000000007C8A000-memory.dmp

            Filesize

            104KB

          • memory/3208-9-0x0000000006040000-0x0000000006062000-memory.dmp

            Filesize

            136KB

          • memory/3208-40-0x00000000082B0000-0x000000000892A000-memory.dmp

            Filesize

            6.5MB

          • memory/3208-11-0x00000000061C0000-0x0000000006226000-memory.dmp

            Filesize

            408KB

          • memory/3208-10-0x00000000060E0000-0x0000000006146000-memory.dmp

            Filesize

            408KB

          • memory/3208-20-0x0000000006230000-0x0000000006587000-memory.dmp

            Filesize

            3.3MB

          • memory/3208-21-0x00000000066D0000-0x00000000066EE000-memory.dmp

            Filesize

            120KB

          • memory/3208-38-0x0000000005260000-0x0000000005270000-memory.dmp

            Filesize

            64KB

          • memory/3208-22-0x0000000006750000-0x000000000679C000-memory.dmp

            Filesize

            304KB

          • memory/3208-23-0x0000000006C30000-0x0000000006C76000-memory.dmp

            Filesize

            280KB

          • memory/3208-24-0x0000000007AC0000-0x0000000007AF4000-memory.dmp

            Filesize

            208KB

          • memory/3208-25-0x00000000702E0000-0x000000007032C000-memory.dmp

            Filesize

            304KB

          • memory/3208-39-0x0000000005260000-0x0000000005270000-memory.dmp

            Filesize

            64KB

          • memory/3208-26-0x000000007F820000-0x000000007F830000-memory.dmp

            Filesize

            64KB

          • memory/3208-42-0x0000000007CB0000-0x0000000007CBA000-memory.dmp

            Filesize

            40KB

          • memory/3208-37-0x0000000007B40000-0x0000000007BE4000-memory.dmp

            Filesize

            656KB

          • memory/3888-104-0x0000000005680000-0x00000000059D7000-memory.dmp

            Filesize

            3.3MB

          • memory/3888-109-0x00000000702E0000-0x000000007032C000-memory.dmp

            Filesize

            304KB

          • memory/3888-110-0x00000000704F0000-0x0000000070847000-memory.dmp

            Filesize

            3.3MB

          • memory/4244-1-0x0000000002170000-0x0000000002573000-memory.dmp

            Filesize

            4.0MB

          • memory/4244-120-0x0000000003F20000-0x000000000480B000-memory.dmp

            Filesize

            8.9MB

          • memory/4244-2-0x0000000003F20000-0x000000000480B000-memory.dmp

            Filesize

            8.9MB

          • memory/4244-119-0x0000000002170000-0x0000000002573000-memory.dmp

            Filesize

            4.0MB

          • memory/4244-3-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/4244-87-0x0000000000400000-0x0000000001DFB000-memory.dmp

            Filesize

            26.0MB

          • memory/4756-77-0x0000000005DE0000-0x0000000006137000-memory.dmp

            Filesize

            3.3MB

          • memory/4756-88-0x00000000702E0000-0x000000007032C000-memory.dmp

            Filesize

            304KB

          • memory/4756-89-0x0000000070530000-0x0000000070887000-memory.dmp

            Filesize

            3.3MB

          • memory/5000-187-0x0000000070430000-0x0000000070787000-memory.dmp

            Filesize

            3.3MB

          • memory/5000-186-0x0000000070200000-0x000000007024C000-memory.dmp

            Filesize

            304KB

          • memory/5000-184-0x0000000006180000-0x00000000064D7000-memory.dmp

            Filesize

            3.3MB

          • memory/5004-162-0x0000000070200000-0x000000007024C000-memory.dmp

            Filesize

            304KB

          • memory/5004-173-0x0000000007BF0000-0x0000000007C01000-memory.dmp

            Filesize

            68KB

          • memory/5004-172-0x00000000078A0000-0x0000000007944000-memory.dmp

            Filesize

            656KB

          • memory/5004-163-0x0000000070380000-0x00000000706D7000-memory.dmp

            Filesize

            3.3MB

          • memory/5004-174-0x00000000060D0000-0x00000000060E5000-memory.dmp

            Filesize

            84KB

          • memory/5004-161-0x0000000006730000-0x000000000677C000-memory.dmp

            Filesize

            304KB

          • memory/5004-159-0x00000000061B0000-0x0000000006507000-memory.dmp

            Filesize

            3.3MB

          • memory/5072-73-0x0000000007690000-0x00000000076A5000-memory.dmp

            Filesize

            84KB

          • memory/5072-72-0x0000000007640000-0x0000000007651000-memory.dmp

            Filesize

            68KB

          • memory/5072-71-0x00000000072F0000-0x0000000007394000-memory.dmp

            Filesize

            656KB

          • memory/5072-62-0x0000000070460000-0x00000000707B7000-memory.dmp

            Filesize

            3.3MB

          • memory/5072-61-0x00000000702E0000-0x000000007032C000-memory.dmp

            Filesize

            304KB