Analysis

  • max time kernel
    59s
  • max time network
    55s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04/04/2024, 17:45

General

  • Target

    4f71666e37910508ae2424fd7964a985627d2cb9ab36bfc8e671f4677b636345.exe

  • Size

    4.1MB

  • MD5

    26d7d6f179a5a619a78529366f519304

  • SHA1

    b27899e55ffe3a800ea4483346ebec442511ca4f

  • SHA256

    4f71666e37910508ae2424fd7964a985627d2cb9ab36bfc8e671f4677b636345

  • SHA512

    15b3a0948acacc333f92bf8d31528c4c9140e2b70beaf59627bbfd96415ad9b4a876ed82a33ac2e166971d03c05cc6b66723a76bd4a0d2983446d6a5da0cff26

  • SSDEEP

    98304:LH5J7CzszSbiwn7GrcYbqmT2oxXGbns7pL8WqJWTgfc:1MU4iw7Yx2bns7pLfTgfc

Malware Config

Signatures

  • Glupteba

    Glupteba is a modular loader written in Golang with various components.

  • Glupteba payload 10 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 1 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 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of WriteProcessMemory 28 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\4f71666e37910508ae2424fd7964a985627d2cb9ab36bfc8e671f4677b636345.exe
    "C:\Users\Admin\AppData\Local\Temp\4f71666e37910508ae2424fd7964a985627d2cb9ab36bfc8e671f4677b636345.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3568
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:936
    • C:\Users\Admin\AppData\Local\Temp\4f71666e37910508ae2424fd7964a985627d2cb9ab36bfc8e671f4677b636345.exe
      "C:\Users\Admin\AppData\Local\Temp\4f71666e37910508ae2424fd7964a985627d2cb9ab36bfc8e671f4677b636345.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:4416
      • 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:1416
      • 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:1348
        • 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:724
      • 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:1848
      • 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:1364
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:4964
        • 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:1932
        • 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:2332
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:2208
          • 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:3164
          • 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:2936

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xo1zl4a0.lkk.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • 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

            11df36e6b4e130a03d4044879e2f62d8

            SHA1

            880f6effa9fa0be32dc182f930b5b179574f984f

            SHA256

            0863ced90fd898af9a4789de663a852de7419e311a6de81eaebf40530cd7ad97

            SHA512

            bcbe5c81462e19f060690c5fc65777afc38943252414146bc346bfccbdc2721aad8d14bf44ada39346143b67fde61f7046b33bdbc98ec4bf4a68db0a5e5cae3e

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

            Filesize

            19KB

            MD5

            83d7edce36f80c5568c35e9cac0af06e

            SHA1

            54d4c286e79dfd03ee7744d222c467e8c497306d

            SHA256

            f7319774af409b499c78c08ecd83e62dcccc7b0deb8d2464676aacd77aef01e3

            SHA512

            e3004ba10b5c7a45b06feeef537a7d65215dc4b64c7db31da8c7cc49fe6758b4043d3abdb169c314b49f5f3fdcbab4d06f44a39299c0116d5db72526bcf58d37

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

            Filesize

            19KB

            MD5

            8dd401d2477a028e5d1f3c9672aa016e

            SHA1

            30cb98dc7c1559b6435349c2384018db621a5cc4

            SHA256

            3cedefce48aaf478f48ffb12e200a32d284be113ea75c11b72935b3278994057

            SHA512

            11528e6e2c0d7be04e2d6a2b817449362c8c4179a3f1ea17eed4c47b70980c03fab47caecfc280f744eaf17ef646484c3e8d55672fb16d6e0dcbac44ef823da3

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

            Filesize

            19KB

            MD5

            901831ad1f7efa67c85283d61f2f8b02

            SHA1

            4f1b5d05e66398fe2291c7af771816a862043f35

            SHA256

            d97b98d5beaf9df3c6831c93511e6110c219ba8d7b6fea54896bbd9295fe2917

            SHA512

            a530598be8d28cb4e5d8d88287110916fb380d6b4c80f5814c190d81240af00bfc3ca617226ded6ff77337572d42fbb16b8f84a9be5bee447bdf1f3548576993

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

            Filesize

            19KB

            MD5

            675e5720816c419d3f242b9336c6d1da

            SHA1

            279fda572c83a43e18526e21c818e6e0110fa83f

            SHA256

            b851ab3760d8c4878025f5a2ee3486195cf0bb7445952ee68c7d20064ac09935

            SHA512

            fee1dea7da4d28f9342c9eeb169ab8c52878a24a98978a1dbbd35a54d35548790131f6d8ea2a62a5b142e241e8ad480d9ec158dc72c217126238e7735efe9ac4

          • C:\Windows\rss\csrss.exe

            Filesize

            4.1MB

            MD5

            26d7d6f179a5a619a78529366f519304

            SHA1

            b27899e55ffe3a800ea4483346ebec442511ca4f

            SHA256

            4f71666e37910508ae2424fd7964a985627d2cb9ab36bfc8e671f4677b636345

            SHA512

            15b3a0948acacc333f92bf8d31528c4c9140e2b70beaf59627bbfd96415ad9b4a876ed82a33ac2e166971d03c05cc6b66723a76bd4a0d2983446d6a5da0cff26

          • memory/936-35-0x0000000007540000-0x000000000755E000-memory.dmp

            Filesize

            120KB

          • memory/936-41-0x00000000077E0000-0x0000000007876000-memory.dmp

            Filesize

            600KB

          • memory/936-18-0x0000000005B20000-0x0000000005B86000-memory.dmp

            Filesize

            408KB

          • memory/936-19-0x0000000005CB0000-0x0000000006007000-memory.dmp

            Filesize

            3.3MB

          • memory/936-20-0x0000000006070000-0x000000000608E000-memory.dmp

            Filesize

            120KB

          • memory/936-21-0x0000000006100000-0x000000000614C000-memory.dmp

            Filesize

            304KB

          • memory/936-22-0x00000000065B0000-0x00000000065F6000-memory.dmp

            Filesize

            280KB

          • memory/936-24-0x000000007F050000-0x000000007F060000-memory.dmp

            Filesize

            64KB

          • memory/936-23-0x00000000074E0000-0x0000000007514000-memory.dmp

            Filesize

            208KB

          • memory/936-25-0x00000000705C0000-0x000000007060C000-memory.dmp

            Filesize

            304KB

          • memory/936-26-0x0000000070740000-0x0000000070A97000-memory.dmp

            Filesize

            3.3MB

          • memory/936-36-0x0000000004DD0000-0x0000000004DE0000-memory.dmp

            Filesize

            64KB

          • memory/936-10-0x00000000053D0000-0x00000000053F2000-memory.dmp

            Filesize

            136KB

          • memory/936-37-0x0000000007560000-0x0000000007604000-memory.dmp

            Filesize

            656KB

          • memory/936-38-0x0000000007CD0000-0x000000000834A000-memory.dmp

            Filesize

            6.5MB

          • memory/936-39-0x0000000007690000-0x00000000076AA000-memory.dmp

            Filesize

            104KB

          • memory/936-40-0x00000000076D0000-0x00000000076DA000-memory.dmp

            Filesize

            40KB

          • memory/936-17-0x0000000005AB0000-0x0000000005B16000-memory.dmp

            Filesize

            408KB

          • memory/936-42-0x00000000076F0000-0x0000000007701000-memory.dmp

            Filesize

            68KB

          • memory/936-43-0x0000000007740000-0x000000000774E000-memory.dmp

            Filesize

            56KB

          • memory/936-44-0x0000000007750000-0x0000000007765000-memory.dmp

            Filesize

            84KB

          • memory/936-45-0x00000000077A0000-0x00000000077BA000-memory.dmp

            Filesize

            104KB

          • memory/936-46-0x0000000007780000-0x0000000007788000-memory.dmp

            Filesize

            32KB

          • memory/936-7-0x0000000005410000-0x0000000005A3A000-memory.dmp

            Filesize

            6.2MB

          • memory/936-50-0x0000000074350000-0x0000000074B01000-memory.dmp

            Filesize

            7.7MB

          • memory/936-6-0x0000000004DD0000-0x0000000004DE0000-memory.dmp

            Filesize

            64KB

          • memory/936-4-0x0000000002BC0000-0x0000000002BF6000-memory.dmp

            Filesize

            216KB

          • memory/936-5-0x0000000074350000-0x0000000074B01000-memory.dmp

            Filesize

            7.7MB

          • memory/1364-128-0x00000000705C0000-0x000000007060C000-memory.dmp

            Filesize

            304KB

          • memory/1364-129-0x0000000070810000-0x0000000070B67000-memory.dmp

            Filesize

            3.3MB

          • memory/1364-127-0x000000007FB00000-0x000000007FB10000-memory.dmp

            Filesize

            64KB

          • memory/1364-117-0x0000000002D30000-0x0000000002D40000-memory.dmp

            Filesize

            64KB

          • memory/1364-116-0x0000000074350000-0x0000000074B01000-memory.dmp

            Filesize

            7.7MB

          • memory/1364-139-0x0000000074350000-0x0000000074B01000-memory.dmp

            Filesize

            7.7MB

          • memory/1416-58-0x0000000002700000-0x0000000002710000-memory.dmp

            Filesize

            64KB

          • memory/1416-70-0x00000000705C0000-0x000000007060C000-memory.dmp

            Filesize

            304KB

          • memory/1416-80-0x0000000006DC0000-0x0000000006E64000-memory.dmp

            Filesize

            656KB

          • memory/1416-81-0x0000000007110000-0x0000000007121000-memory.dmp

            Filesize

            68KB

          • memory/1416-82-0x0000000007160000-0x0000000007175000-memory.dmp

            Filesize

            84KB

          • memory/1416-85-0x0000000074350000-0x0000000074B01000-memory.dmp

            Filesize

            7.7MB

          • memory/1416-71-0x0000000070810000-0x0000000070B67000-memory.dmp

            Filesize

            3.3MB

          • memory/1416-57-0x00000000056C0000-0x0000000005A17000-memory.dmp

            Filesize

            3.3MB

          • memory/1416-59-0x0000000002700000-0x0000000002710000-memory.dmp

            Filesize

            64KB

          • memory/1416-68-0x0000000074350000-0x0000000074B01000-memory.dmp

            Filesize

            7.7MB

          • memory/1416-69-0x000000007F8F0000-0x000000007F900000-memory.dmp

            Filesize

            64KB

          • memory/1848-115-0x0000000074350000-0x0000000074B01000-memory.dmp

            Filesize

            7.7MB

          • memory/1848-89-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

            Filesize

            64KB

          • memory/1848-101-0x0000000070810000-0x0000000070B67000-memory.dmp

            Filesize

            3.3MB

          • memory/1848-87-0x0000000074350000-0x0000000074B01000-memory.dmp

            Filesize

            7.7MB

          • memory/1848-112-0x000000007F970000-0x000000007F980000-memory.dmp

            Filesize

            64KB

          • memory/1848-113-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

            Filesize

            64KB

          • memory/1848-99-0x00000000705C0000-0x000000007060C000-memory.dmp

            Filesize

            304KB

          • memory/1848-88-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

            Filesize

            64KB

          • memory/3568-52-0x0000000000400000-0x0000000002F43000-memory.dmp

            Filesize

            43.3MB

          • memory/3568-1-0x0000000004F00000-0x00000000052FF000-memory.dmp

            Filesize

            4.0MB

          • memory/3568-2-0x0000000005300000-0x0000000005BEB000-memory.dmp

            Filesize

            8.9MB

          • memory/3568-3-0x0000000000400000-0x0000000002F43000-memory.dmp

            Filesize

            43.3MB

          • memory/3568-47-0x0000000004F00000-0x00000000052FF000-memory.dmp

            Filesize

            4.0MB

          • memory/3568-53-0x0000000005300000-0x0000000005BEB000-memory.dmp

            Filesize

            8.9MB

          • memory/4416-56-0x0000000000400000-0x0000000002F43000-memory.dmp

            Filesize

            43.3MB

          • memory/4416-142-0x0000000000400000-0x0000000002F43000-memory.dmp

            Filesize

            43.3MB

          • memory/4416-55-0x0000000004D70000-0x0000000005177000-memory.dmp

            Filesize

            4.0MB

          • memory/4416-100-0x0000000004D70000-0x0000000005177000-memory.dmp

            Filesize

            4.0MB

          • memory/4416-102-0x0000000000400000-0x0000000002F43000-memory.dmp

            Filesize

            43.3MB

          • memory/4964-147-0x0000000005200000-0x0000000005600000-memory.dmp

            Filesize

            4.0MB

          • memory/4964-148-0x0000000005600000-0x0000000005EEB000-memory.dmp

            Filesize

            8.9MB

          • memory/4964-149-0x0000000000400000-0x0000000002F43000-memory.dmp

            Filesize

            43.3MB

          • memory/4964-208-0x0000000000400000-0x0000000002F43000-memory.dmp

            Filesize

            43.3MB