Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-1703_x64
  • resource
    win10-20230831-en
  • resource tags

    arch:x64arch:x86image:win10-20230831-enlocale:en-usos:windows10-1703-x64system
  • submitted
    19/09/2023, 15:35

General

  • Target

    9f8aca1291031e4f845cc6ee6311fc1e92ed20c05ef9f199b8c8e32997d387bf.exe

  • Size

    4.2MB

  • MD5

    63b0d60e8fdbeb9eafb91c18a3fe449c

  • SHA1

    ac98b5aad506da92c41e9c9940af23eff5f2aa6a

  • SHA256

    9f8aca1291031e4f845cc6ee6311fc1e92ed20c05ef9f199b8c8e32997d387bf

  • SHA512

    2b8e715bd3e9cb1b1bec490af8cd7454a417ae54b2bbd19e479c90f37e235fad1e99753f7492ec9b56f3bbfca15edd9d1537a7503bc8673ab359d5c048d993b4

  • SSDEEP

    98304:7Lv70B0X5LVV6lYPaXdMCcZ5roYgDcQH4yenbKnJF7h2xAJpe5i3aAK:H2E5LVVm1Xdkl5XKoeThC8peTl

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 22 IoCs
  • Windows security bypass 2 TTPs 7 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 7 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 5 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 9 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\9f8aca1291031e4f845cc6ee6311fc1e92ed20c05ef9f199b8c8e32997d387bf.exe
    "C:\Users\Admin\AppData\Local\Temp\9f8aca1291031e4f845cc6ee6311fc1e92ed20c05ef9f199b8c8e32997d387bf.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3152
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3384
    • C:\Users\Admin\AppData\Local\Temp\9f8aca1291031e4f845cc6ee6311fc1e92ed20c05ef9f199b8c8e32997d387bf.exe
      "C:\Users\Admin\AppData\Local\Temp\9f8aca1291031e4f845cc6ee6311fc1e92ed20c05ef9f199b8c8e32997d387bf.exe"
      2⤵
      • Windows security bypass
      • Windows security modification
      • 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:2540
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Modifies data under HKEY_USERS
        PID:3692
      • 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:2892
        • 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:2400
      • 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:4136
      • 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:4872
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4888
        • 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:4208
        • 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:2140
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:2608
          • 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:4936
          • 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:4912
          • 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:2796
          • 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:4048

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ip1mxkgx.yw4.ps1

      Filesize

      1B

      MD5

      c4ca4238a0b923820dcc509a6f75849b

      SHA1

      356a192b7913b04c54574d18c28d46e6395428ab

      SHA256

      6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

      SHA512

      4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

    • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

      Filesize

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • 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\Windows\PowerShell\StartupProfileData-Interactive

      Filesize

      18KB

      MD5

      680de5fce83c8d67725d5481fcb1f129

      SHA1

      1297b9f5657c5d629ea20e09c3c5c90997737636

      SHA256

      173a27b4c597e0b9b6e163250fdd94de3fb8cbee9bfe7350b914237b3d0b29c5

      SHA512

      5a65ca997be71132b6171e86fa47145a27dcc274c6d83ef7fc2ae219c6ad30710506d6fd8cfeb6d077b1b95869d6c419c60ab0e134f0befc40685ee9044d8f55

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

      Filesize

      18KB

      MD5

      941503ed6b930c3b8094c6db5beed616

      SHA1

      3815361ebdd74c84ad65b44e7e674d8c4914f96b

      SHA256

      d630f9132d1682992aba0c09eecac1b26a7d79f9974d1bac2b9471d4f7a51b86

      SHA512

      e4e35714580b45f80ed7f099a379c3d8a5857f9a54b80418b8924f696b773b8129c9bd67d7451871b2a4b4f81c3651dd4014d68ff1dd6ec527827989d9986aaf

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

      Filesize

      18KB

      MD5

      d42bdd73b637c933e5cfaae66ff2da59

      SHA1

      d2840227c6475f42ac212c60b5b92a2f3c8f8556

      SHA256

      96a86b118a1165ec2a4cad57b338709de750d55a9797fb471ff1650652fd5f00

      SHA512

      3929953e34b5af05dfcdf37f689e91ccbc22c1cd964b13a911975c6fe6d7ffb582347f5edc51cecee5b255457594a98f1c065daf966371030891eff4a2ac581a

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

      Filesize

      18KB

      MD5

      7e4804c62f7377e8781f1884082121b3

      SHA1

      061339e91f2b5070dd8743cd1b5b9e854c68a63e

      SHA256

      45da55a0e1026debe98e67b5052d4a25bb83712413580a70ccff7b7fed455d4e

      SHA512

      00ada66ad165e4c17d8acf23ca008e9d279438ca144cff8888301ff75455c30e63d94d859abe0300bd8416416ef362fe8d7a5dc6aca4e06d0f7505bb8434e7ae

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      63b0d60e8fdbeb9eafb91c18a3fe449c

      SHA1

      ac98b5aad506da92c41e9c9940af23eff5f2aa6a

      SHA256

      9f8aca1291031e4f845cc6ee6311fc1e92ed20c05ef9f199b8c8e32997d387bf

      SHA512

      2b8e715bd3e9cb1b1bec490af8cd7454a417ae54b2bbd19e479c90f37e235fad1e99753f7492ec9b56f3bbfca15edd9d1537a7503bc8673ab359d5c048d993b4

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      63b0d60e8fdbeb9eafb91c18a3fe449c

      SHA1

      ac98b5aad506da92c41e9c9940af23eff5f2aa6a

      SHA256

      9f8aca1291031e4f845cc6ee6311fc1e92ed20c05ef9f199b8c8e32997d387bf

      SHA512

      2b8e715bd3e9cb1b1bec490af8cd7454a417ae54b2bbd19e479c90f37e235fad1e99753f7492ec9b56f3bbfca15edd9d1537a7503bc8673ab359d5c048d993b4

    • memory/2540-313-0x0000000002A00000-0x0000000002E00000-memory.dmp

      Filesize

      4.0MB

    • memory/2540-816-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2540-310-0x0000000002A00000-0x0000000002E00000-memory.dmp

      Filesize

      4.0MB

    • memory/2540-737-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2540-322-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2540-311-0x0000000002E00000-0x00000000036EB000-memory.dmp

      Filesize

      8.9MB

    • memory/2540-312-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/3152-1-0x0000000002B80000-0x0000000002F80000-memory.dmp

      Filesize

      4.0MB

    • memory/3152-67-0x0000000002B80000-0x0000000002F80000-memory.dmp

      Filesize

      4.0MB

    • memory/3152-68-0x0000000002F80000-0x000000000386B000-memory.dmp

      Filesize

      8.9MB

    • memory/3152-2-0x0000000002F80000-0x000000000386B000-memory.dmp

      Filesize

      8.9MB

    • memory/3152-3-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/3152-77-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/3152-308-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/3384-15-0x0000000007930000-0x000000000794C000-memory.dmp

      Filesize

      112KB

    • memory/3384-80-0x0000000009C10000-0x0000000009C2E000-memory.dmp

      Filesize

      120KB

    • memory/3384-75-0x0000000009C30000-0x0000000009C63000-memory.dmp

      Filesize

      204KB

    • memory/3384-86-0x0000000006C60000-0x0000000006C70000-memory.dmp

      Filesize

      64KB

    • memory/3384-87-0x0000000009E80000-0x0000000009F14000-memory.dmp

      Filesize

      592KB

    • memory/3384-159-0x00000000730E0000-0x00000000737CE000-memory.dmp

      Filesize

      6.9MB

    • memory/3384-282-0x0000000009E00000-0x0000000009E1A000-memory.dmp

      Filesize

      104KB

    • memory/3384-287-0x0000000009DE0000-0x0000000009DE8000-memory.dmp

      Filesize

      32KB

    • memory/3384-298-0x0000000006C60000-0x0000000006C70000-memory.dmp

      Filesize

      64KB

    • memory/3384-305-0x0000000006C60000-0x0000000006C70000-memory.dmp

      Filesize

      64KB

    • memory/3384-307-0x00000000730E0000-0x00000000737CE000-memory.dmp

      Filesize

      6.9MB

    • memory/3384-78-0x000000007F610000-0x000000007F620000-memory.dmp

      Filesize

      64KB

    • memory/3384-79-0x000000006FE40000-0x0000000070190000-memory.dmp

      Filesize

      3.3MB

    • memory/3384-85-0x0000000009C70000-0x0000000009D15000-memory.dmp

      Filesize

      660KB

    • memory/3384-76-0x000000006FDF0000-0x000000006FE3B000-memory.dmp

      Filesize

      300KB

    • memory/3384-66-0x0000000008DE0000-0x0000000008E56000-memory.dmp

      Filesize

      472KB

    • memory/3384-6-0x00000000047E0000-0x0000000004816000-memory.dmp

      Filesize

      216KB

    • memory/3384-35-0x0000000008140000-0x000000000817C000-memory.dmp

      Filesize

      240KB

    • memory/3384-16-0x0000000007DB0000-0x0000000007DFB000-memory.dmp

      Filesize

      300KB

    • memory/3384-14-0x00000000079D0000-0x0000000007D20000-memory.dmp

      Filesize

      3.3MB

    • memory/3384-13-0x0000000007200000-0x0000000007266000-memory.dmp

      Filesize

      408KB

    • memory/3384-12-0x0000000007090000-0x00000000070F6000-memory.dmp

      Filesize

      408KB

    • memory/3384-11-0x0000000006F10000-0x0000000006F32000-memory.dmp

      Filesize

      136KB

    • memory/3384-10-0x00000000072A0000-0x00000000078C8000-memory.dmp

      Filesize

      6.2MB

    • memory/3384-9-0x0000000006C60000-0x0000000006C70000-memory.dmp

      Filesize

      64KB

    • memory/3384-8-0x0000000006C60000-0x0000000006C70000-memory.dmp

      Filesize

      64KB

    • memory/3384-7-0x00000000730E0000-0x00000000737CE000-memory.dmp

      Filesize

      6.9MB

    • memory/3692-314-0x0000000003200000-0x00000000032AE000-memory.dmp

      Filesize

      696KB

    • memory/4136-325-0x0000000007940000-0x0000000007C90000-memory.dmp

      Filesize

      3.3MB

    • memory/4136-353-0x0000000006BD0000-0x0000000006BE0000-memory.dmp

      Filesize

      64KB

    • memory/4136-321-0x00000000731E0000-0x00000000738CE000-memory.dmp

      Filesize

      6.9MB

    • memory/4136-323-0x0000000006BD0000-0x0000000006BE0000-memory.dmp

      Filesize

      64KB

    • memory/4136-324-0x0000000006BD0000-0x0000000006BE0000-memory.dmp

      Filesize

      64KB

    • memory/4136-327-0x00000000083D0000-0x000000000841B000-memory.dmp

      Filesize

      300KB

    • memory/4136-346-0x000000006FF10000-0x000000006FF5B000-memory.dmp

      Filesize

      300KB

    • memory/4136-347-0x000000006FF60000-0x00000000702B0000-memory.dmp

      Filesize

      3.3MB

    • memory/4136-566-0x00000000731E0000-0x00000000738CE000-memory.dmp

      Filesize

      6.9MB

    • memory/4136-352-0x0000000009450000-0x00000000094F5000-memory.dmp

      Filesize

      660KB

    • memory/4208-827-0x0000000008730000-0x000000000877B000-memory.dmp

      Filesize

      300KB

    • memory/4208-846-0x000000006FE70000-0x000000006FEBB000-memory.dmp

      Filesize

      300KB

    • memory/4208-847-0x000000006FEE0000-0x0000000070230000-memory.dmp

      Filesize

      3.3MB

    • memory/4208-825-0x0000000007DB0000-0x0000000008100000-memory.dmp

      Filesize

      3.3MB

    • memory/4208-824-0x0000000006EF0000-0x0000000006F00000-memory.dmp

      Filesize

      64KB

    • memory/4208-823-0x0000000073140000-0x000000007382E000-memory.dmp

      Filesize

      6.9MB

    • memory/4872-569-0x00000000731E0000-0x00000000738CE000-memory.dmp

      Filesize

      6.9MB

    • memory/4872-571-0x0000000007CF0000-0x0000000008040000-memory.dmp

      Filesize

      3.3MB

    • memory/4872-593-0x000000006FF80000-0x00000000702D0000-memory.dmp

      Filesize

      3.3MB

    • memory/4872-570-0x0000000007080000-0x0000000007090000-memory.dmp

      Filesize

      64KB

    • memory/4872-573-0x0000000008440000-0x000000000848B000-memory.dmp

      Filesize

      300KB

    • memory/4872-598-0x0000000007080000-0x0000000007090000-memory.dmp

      Filesize

      64KB

    • memory/4872-592-0x000000006FE10000-0x000000006FE5B000-memory.dmp

      Filesize

      300KB

    • memory/4872-812-0x00000000731E0000-0x00000000738CE000-memory.dmp

      Filesize

      6.9MB

    • memory/4888-1095-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-820-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-819-0x0000000003200000-0x00000000035F9000-memory.dmp

      Filesize

      4.0MB

    • memory/4888-1566-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-1567-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-1568-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-1569-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-1570-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-1571-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-1572-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-1573-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-1574-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4888-1575-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB