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Analysis

  • max time kernel
    91s
  • max time network
    155s
  • platform
    windows10-1703_x64
  • resource
    win10-20230703-en
  • resource tags

    arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system
  • submitted
    18/07/2023, 07:10

General

  • Target

    a7bcf7b23dfb77ebaf1d36db5e22974f19e5ad03384be1c99f29ccf4c7e9879c.exe

  • Size

    4.2MB

  • MD5

    294af6fd13b3e6b2da02dba51f06a066

  • SHA1

    cb43c58a55b0706b60fb02c6d0eb7c96c4de83cf

  • SHA256

    a7bcf7b23dfb77ebaf1d36db5e22974f19e5ad03384be1c99f29ccf4c7e9879c

  • SHA512

    f4330a3245656acda6dd33af142c4ffc2a91c3b3a8a85a8534d9cb05168f2995408e366ccccc8f9f3e9fc2c71e928249558499127d3c9516dc8460f57565bda9

  • SSDEEP

    98304:rl1biry4pKxJw74pmsb0eKjq9xslCxvihWXN0BZ8np:rOe48gPMw4slCx/d0j8p

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 17 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 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 51 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\a7bcf7b23dfb77ebaf1d36db5e22974f19e5ad03384be1c99f29ccf4c7e9879c.exe
    "C:\Users\Admin\AppData\Local\Temp\a7bcf7b23dfb77ebaf1d36db5e22974f19e5ad03384be1c99f29ccf4c7e9879c.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2216
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:384
    • C:\Users\Admin\AppData\Local\Temp\a7bcf7b23dfb77ebaf1d36db5e22974f19e5ad03384be1c99f29ccf4c7e9879c.exe
      "C:\Users\Admin\AppData\Local\Temp\a7bcf7b23dfb77ebaf1d36db5e22974f19e5ad03384be1c99f29ccf4c7e9879c.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:2836
      • 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:3716
      • 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:4196
        • 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:2964
      • 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:3000
      • 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:3972
      • 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:4184
        • 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:1340
        • 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:3824
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4868
          • 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:3560
          • 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:1100
          • 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:4592
          • 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:2132

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iq1ew5jh.zvn.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\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      1c19c16e21c97ed42d5beabc93391fc5

      SHA1

      8ad83f8e0b3acf8dfbbf87931e41f0d664c4df68

      SHA256

      1bcd97396c83babfe6c5068ba590d7a3f8b70e72955a9d1e4070648e404cbf05

      SHA512

      7d18776d8f649b3d29c182ff03efc6cea8b527542ee55304980f24577aae8b64e37044407776e220984346c3998ace5f8853afa58c8b38407482a728e9495e0c

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

      Filesize

      18KB

      MD5

      d07e8ffc551e1cf7e23c007e3eb23fd8

      SHA1

      1e94cc6066b28a6bbe09ef585d4826bed8a45578

      SHA256

      f97ffed01083026e5e76a2fa93e5a81495df21898a2c1ad3d4616f23559d767f

      SHA512

      2baa83355727abb12e627dc1f7a11487378ece49cc8dd673c1dca1588078587de0f2dd2a6e1e2c09c2df9e7c89272b9a1a2352bd777b547e43ffbf33ceb4cdff

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

      Filesize

      18KB

      MD5

      e4153d47378ba3a1870167dec316ebdc

      SHA1

      b9d84801143eb8e9ae16e96fea6d30ab6cd9eeb2

      SHA256

      5110c65a0fff3db6ad21f44b43d1d75c083598d94a5439f3255decb6428d8f11

      SHA512

      20563a1a75112d6e60d9491549418cbf640a921f43d5accfa862776dce5783119629e9bfc771c36fe69643eb4af054ffdd33ce610cdd9a4d7f62cbd4cd17870b

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

      Filesize

      18KB

      MD5

      24b43c83d8c4ab8719654c7a05fafb69

      SHA1

      8c347be7b1d0d3a1c17e550e260a63c1758454b8

      SHA256

      9e9398e99152b0fb3b9e70a9d2253734ef080e936c4f5682ef5e95f2e4173656

      SHA512

      80adb0b1197d0270aed8cdbc8d11e1ca04263d56f6fc387e8eeededeb76cbc9454b922584bbb57082eb9d1267c7b05b0f5a4935948f5a307b80767214f982ab9

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

      Filesize

      18KB

      MD5

      2227dfbed7b39d42cc68500424377845

      SHA1

      fc41f80d8fd3fd3dd72fb280e983ec98aab2a5a9

      SHA256

      04e22668ba6d59190adc0aa73589afa5e6f91df2981fc0a5d15e8ccce99deb14

      SHA512

      e129ae5fff4e3d0576a135f8877687ec26d0b94cc22f0690309598014a4bb26267cf35c06c03071af255b63ea05a6bff0f4da8bff4b734afaefa5d24fd72d78e

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

      Filesize

      18KB

      MD5

      882362da983ebbeb0762f75bb4fe1421

      SHA1

      1a4cb1ca1752229d24925bc3687cf7a538f4f31e

      SHA256

      16d803696a13a92078eda9b3e76762cce26755dc6ad0748e4f311de25be30cae

      SHA512

      c8dc99bef6e4477768d25b8c495100186d160707cb37699bf4eeec11f7b56d4816ec77b28174661dd814c23ff2c55b2689e4c3d8493e2d0c97efc5fe27254b44

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      294af6fd13b3e6b2da02dba51f06a066

      SHA1

      cb43c58a55b0706b60fb02c6d0eb7c96c4de83cf

      SHA256

      a7bcf7b23dfb77ebaf1d36db5e22974f19e5ad03384be1c99f29ccf4c7e9879c

      SHA512

      f4330a3245656acda6dd33af142c4ffc2a91c3b3a8a85a8534d9cb05168f2995408e366ccccc8f9f3e9fc2c71e928249558499127d3c9516dc8460f57565bda9

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      294af6fd13b3e6b2da02dba51f06a066

      SHA1

      cb43c58a55b0706b60fb02c6d0eb7c96c4de83cf

      SHA256

      a7bcf7b23dfb77ebaf1d36db5e22974f19e5ad03384be1c99f29ccf4c7e9879c

      SHA512

      f4330a3245656acda6dd33af142c4ffc2a91c3b3a8a85a8534d9cb05168f2995408e366ccccc8f9f3e9fc2c71e928249558499127d3c9516dc8460f57565bda9

    • memory/384-197-0x000000007EDD0000-0x000000007EDE0000-memory.dmp

      Filesize

      64KB

    • memory/384-206-0x0000000006C50000-0x0000000006C60000-memory.dmp

      Filesize

      64KB

    • memory/384-136-0x00000000079C0000-0x0000000007D10000-memory.dmp

      Filesize

      3.3MB

    • memory/384-130-0x0000000006C50000-0x0000000006C60000-memory.dmp

      Filesize

      64KB

    • memory/384-138-0x0000000007240000-0x000000000725C000-memory.dmp

      Filesize

      112KB

    • memory/384-139-0x0000000007D20000-0x0000000007D6B000-memory.dmp

      Filesize

      300KB

    • memory/384-127-0x0000000000C80000-0x0000000000CB6000-memory.dmp

      Filesize

      216KB

    • memory/384-134-0x0000000006F40000-0x0000000006FA6000-memory.dmp

      Filesize

      408KB

    • memory/384-151-0x0000000008C90000-0x0000000008D06000-memory.dmp

      Filesize

      472KB

    • memory/384-160-0x0000000008E00000-0x0000000008E3C000-memory.dmp

      Filesize

      240KB

    • memory/384-131-0x0000000007290000-0x00000000078B8000-memory.dmp

      Filesize

      6.2MB

    • memory/384-198-0x0000000009C70000-0x0000000009CA3000-memory.dmp

      Filesize

      204KB

    • memory/384-199-0x0000000009C50000-0x0000000009C6E000-memory.dmp

      Filesize

      120KB

    • memory/384-204-0x0000000009CB0000-0x0000000009D55000-memory.dmp

      Filesize

      660KB

    • memory/384-205-0x00000000730B0000-0x000000007379E000-memory.dmp

      Filesize

      6.9MB

    • memory/384-128-0x00000000730B0000-0x000000007379E000-memory.dmp

      Filesize

      6.9MB

    • memory/384-207-0x0000000009EB0000-0x0000000009F44000-memory.dmp

      Filesize

      592KB

    • memory/384-278-0x0000000006C50000-0x0000000006C60000-memory.dmp

      Filesize

      64KB

    • memory/384-129-0x0000000006C50000-0x0000000006C60000-memory.dmp

      Filesize

      64KB

    • memory/384-285-0x0000000006C50000-0x0000000006C60000-memory.dmp

      Filesize

      64KB

    • memory/384-403-0x0000000008150000-0x000000000816A000-memory.dmp

      Filesize

      104KB

    • memory/384-408-0x0000000008140000-0x0000000008148000-memory.dmp

      Filesize

      32KB

    • memory/384-426-0x00000000730B0000-0x000000007379E000-memory.dmp

      Filesize

      6.9MB

    • memory/384-135-0x0000000007060000-0x00000000070C6000-memory.dmp

      Filesize

      408KB

    • memory/384-133-0x0000000006E20000-0x0000000006E42000-memory.dmp

      Filesize

      136KB

    • memory/1340-1181-0x00000000080F0000-0x0000000008440000-memory.dmp

      Filesize

      3.3MB

    • memory/1340-1180-0x0000000005000000-0x0000000005010000-memory.dmp

      Filesize

      64KB

    • memory/1340-1179-0x0000000005000000-0x0000000005010000-memory.dmp

      Filesize

      64KB

    • memory/1340-1183-0x0000000008810000-0x000000000885B000-memory.dmp

      Filesize

      300KB

    • memory/1340-1178-0x0000000073110000-0x00000000737FE000-memory.dmp

      Filesize

      6.9MB

    • memory/1340-1203-0x000000007E7B0000-0x000000007E7C0000-memory.dmp

      Filesize

      64KB

    • memory/2216-123-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2216-132-0x0000000002AC0000-0x0000000002EBC000-memory.dmp

      Filesize

      4.0MB

    • memory/2216-124-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2216-137-0x0000000002EC0000-0x00000000037AB000-memory.dmp

      Filesize

      8.9MB

    • memory/2216-140-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2216-122-0x0000000002EC0000-0x00000000037AB000-memory.dmp

      Filesize

      8.9MB

    • memory/2216-121-0x0000000002AC0000-0x0000000002EBC000-memory.dmp

      Filesize

      4.0MB

    • memory/2216-279-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2216-427-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2836-430-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2836-702-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2836-429-0x0000000002A40000-0x0000000002E46000-memory.dmp

      Filesize

      4.0MB

    • memory/2836-448-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2836-672-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2836-1169-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/2836-463-0x0000000002A40000-0x0000000002E46000-memory.dmp

      Filesize

      4.0MB

    • memory/3000-685-0x0000000004BC0000-0x0000000004BD0000-memory.dmp

      Filesize

      64KB

    • memory/3000-686-0x0000000007840000-0x0000000007B90000-memory.dmp

      Filesize

      3.3MB

    • memory/3000-684-0x0000000004BC0000-0x0000000004BD0000-memory.dmp

      Filesize

      64KB

    • memory/3000-711-0x0000000004BC0000-0x0000000004BD0000-memory.dmp

      Filesize

      64KB

    • memory/3000-924-0x00000000731B0000-0x000000007389E000-memory.dmp

      Filesize

      6.9MB

    • memory/3000-683-0x00000000731B0000-0x000000007389E000-memory.dmp

      Filesize

      6.9MB

    • memory/3716-674-0x00000000731B0000-0x000000007389E000-memory.dmp

      Filesize

      6.9MB

    • memory/3716-437-0x00000000082A0000-0x00000000082EB000-memory.dmp

      Filesize

      300KB

    • memory/3716-433-0x00000000731B0000-0x000000007389E000-memory.dmp

      Filesize

      6.9MB

    • memory/3716-434-0x0000000004FA0000-0x0000000004FB0000-memory.dmp

      Filesize

      64KB

    • memory/3716-435-0x0000000004FA0000-0x0000000004FB0000-memory.dmp

      Filesize

      64KB

    • memory/3716-436-0x0000000007C50000-0x0000000007FA0000-memory.dmp

      Filesize

      3.3MB

    • memory/3716-457-0x000000007F130000-0x000000007F140000-memory.dmp

      Filesize

      64KB

    • memory/3716-462-0x0000000009660000-0x0000000009705000-memory.dmp

      Filesize

      660KB

    • memory/3716-679-0x00000000731B0000-0x000000007389E000-memory.dmp

      Filesize

      6.9MB

    • memory/3972-927-0x00000000731B0000-0x000000007389E000-memory.dmp

      Filesize

      6.9MB

    • memory/3972-928-0x0000000000BC0000-0x0000000000BD0000-memory.dmp

      Filesize

      64KB

    • memory/3972-952-0x0000000000BC0000-0x0000000000BD0000-memory.dmp

      Filesize

      64KB

    • memory/3972-1165-0x00000000731B0000-0x000000007389E000-memory.dmp

      Filesize

      6.9MB

    • memory/4184-1202-0x0000000003000000-0x00000000033F9000-memory.dmp

      Filesize

      4.0MB

    • memory/4184-1175-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4184-1530-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4184-1174-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/4184-1173-0x0000000003400000-0x0000000003CEB000-memory.dmp

      Filesize

      8.9MB

    • memory/4184-1172-0x0000000003000000-0x00000000033F9000-memory.dmp

      Filesize

      4.0MB

    • memory/4184-1917-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB