Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-11-2024 10:08

General

  • Target

    6fc8b5b8a90cf8ba7e0eb930fcdde776f8eeb3f37913318df7766a365e13fa8eN.exe

  • Size

    10KB

  • MD5

    ed9fbbbe548c41479cb70e4d694793d0

  • SHA1

    a0bde162d2241ab2acb58544511a41df30a096a7

  • SHA256

    6fc8b5b8a90cf8ba7e0eb930fcdde776f8eeb3f37913318df7766a365e13fa8e

  • SHA512

    49652367fec13a1e7a188fd039bf8a9fae6be72fdc31e7597bbcfdf30375277f6a7e09b74bd5a2adf1696cf720998c751b7e1671afa3a59c4dfa7069bca543fb

  • SSDEEP

    192:Jd94uPG8E1CDSnzmgp+eMwY46BJxT43thW:394u5SCDSnJo+c83

Malware Config

Extracted

Family

phorphiex

C2

http://185.215.113.84

Signatures

  • Modifies security service 2 TTPs 1 IoCs
  • Phorphiex family
  • Phorphiex payload 1 IoCs
  • Phorphiex, Phorpiex

    Phorphiex or Phorpiex Malware family which infects systems to distribute other malicious payloads such as ransomware, stealers and cryptominers.

  • Windows security bypass 2 TTPs 6 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Downloads MZ/PE file
  • Stops running service(s) 4 TTPs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 5 IoCs
  • Windows security modification 2 TTPs 7 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Launches sc.exe 5 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 13 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 46 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\6fc8b5b8a90cf8ba7e0eb930fcdde776f8eeb3f37913318df7766a365e13fa8eN.exe
    "C:\Users\Admin\AppData\Local\Temp\6fc8b5b8a90cf8ba7e0eb930fcdde776f8eeb3f37913318df7766a365e13fa8eN.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1120
    • C:\Users\Admin\AppData\Local\Temp\3028.scr
      "C:\Users\Admin\AppData\Local\Temp\3028.scr" /S
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4512
      • C:\Windows\sysppvrdnvs.exe
        C:\Windows\sysppvrdnvs.exe
        3⤵
        • Modifies security service
        • Windows security bypass
        • Checks computer location settings
        • Executes dropped EXE
        • Windows security modification
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3512
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -Command "Add-MpPreference -ExclusionPath $env:windir; Add-MpPreference -ExclusionPath $env:TEMP; Add-MpPreference -ExclusionPath $env:USERPROFILE"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3276
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -Command "Add-MpPreference -ExclusionPath $env:windir; Add-MpPreference -ExclusionPath $env:TEMP; Add-MpPreference -ExclusionPath $env:USERPROFILE"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:972
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c sc stop UsoSvc & sc stop WaaSMedicSvc & sc stop wuauserv & sc stop DoSvc & sc stop BITS /wait
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4496
          • C:\Windows\SysWOW64\sc.exe
            sc stop UsoSvc
            5⤵
            • Launches sc.exe
            • System Location Discovery: System Language Discovery
            PID:2024
          • C:\Windows\SysWOW64\sc.exe
            sc stop WaaSMedicSvc
            5⤵
            • Launches sc.exe
            • System Location Discovery: System Language Discovery
            PID:5108
          • C:\Windows\SysWOW64\sc.exe
            sc stop wuauserv
            5⤵
            • Launches sc.exe
            • System Location Discovery: System Language Discovery
            PID:2364
          • C:\Windows\SysWOW64\sc.exe
            sc stop DoSvc
            5⤵
            • Launches sc.exe
            • System Location Discovery: System Language Discovery
            PID:2956
          • C:\Windows\SysWOW64\sc.exe
            sc stop BITS /wait
            5⤵
            • Launches sc.exe
            • System Location Discovery: System Language Discovery
            PID:4012
        • C:\Users\Admin\AppData\Local\Temp\864131738.exe
          C:\Users\Admin\AppData\Local\Temp\864131738.exe
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3832
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /c reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:880
            • C:\Windows\system32\reg.exe
              reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f
              6⤵
                PID:4872
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "Windows Upgrade Manager"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:3516
              • C:\Windows\system32\schtasks.exe
                schtasks /delete /f /tn "Windows Upgrade Manager"
                6⤵
                  PID:3132
            • C:\Users\Admin\AppData\Local\Temp\1234623054.exe
              C:\Users\Admin\AppData\Local\Temp\1234623054.exe
              4⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:3224
            • C:\Users\Admin\AppData\Local\Temp\3261314673.exe
              C:\Users\Admin\AppData\Local\Temp\3261314673.exe
              4⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:4420

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\3DWZNJ32\1[1]

        Filesize

        108KB

        MD5

        1fcb78fb6cf9720e9d9494c42142d885

        SHA1

        fef9c2e728ab9d56ce9ed28934b3182b6f1d5379

        SHA256

        84652bb8c63ca4fd7eb7a2d6ef44029801f3057aa2961867245a3a765928dd02

        SHA512

        cdf58e463af1784aea86995b3e5d6b07701c5c4095e30ec80cc901ffd448c6f4f714c521bf8796ffa8c47538bf8bf5351e157596efaa7ab88155d63dc33f7dc3

      • C:\Users\Admin\AppData\Local\Temp\1234623054.exe

        Filesize

        15KB

        MD5

        0c37ee292fec32dba0420e6c94224e28

        SHA1

        012cbdddaddab319a4b3ae2968b42950e929c46b

        SHA256

        981d724feebc36777e99513dc061d1f009e589f965c920797285c46d863060d1

        SHA512

        2b60b571c55d0441ba0cfc695f9db5cd12660ebec7effc7e893c3b7a1c6cb6149df487c31b8d748697e260cbc4af29331592b705ea9638f64a711c7a6164628b

      • C:\Users\Admin\AppData\Local\Temp\3028.scr

        Filesize

        83KB

        MD5

        06560b5e92d704395bc6dae58bc7e794

        SHA1

        fbd3e4ae28620197d1f02bfc24adaf4ddacd2372

        SHA256

        9eaaadf3857e4a3e83f4f78d96ab185213b6528c8e470807f9d16035daadf33d

        SHA512

        b55b49fc1bd526c47d88fcf8a20fcaed900bfb291f2e3e1186ec196a87127ed24df71385ae04fedcc802c362c4ebf38edfc182013febf4496ddeb66ce5195ee3

      • C:\Users\Admin\AppData\Local\Temp\3261314673.exe

        Filesize

        10KB

        MD5

        96509ab828867d81c1693b614b22f41d

        SHA1

        c5f82005dbda43cedd86708cc5fc3635a781a67e

        SHA256

        a9de2927b0ec45cf900508fec18531c04ee9fa8a5dfe2fc82c67d9458cf4b744

        SHA512

        ff603117a06da8fb2386c1d2049a5896774e41f34d05951ecd4e7b5fc9da51a373e3fcf61af3577ff78490cf898471ce8e71eae848a12812fe98cd7e76e1a9ca

      • C:\Users\Admin\AppData\Local\Temp\864131738.exe

        Filesize

        8KB

        MD5

        cb8420e681f68db1bad5ed24e7b22114

        SHA1

        416fc65d538d3622f5ca71c667a11df88a927c31

        SHA256

        5850892f67f85991b31fc90f62c8b7791afeb3c08ae1877d857aa2b59471a2ea

        SHA512

        baaabcc4ad5d409267a34ed7b20e4afb4d247974bfc581d39aae945e5bf8a673a1f8eacae2e6783480c8baaeb0a80d028274a202d456f13d0af956afa0110fdf

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kab52thz.d4x.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/972-43-0x0000000007C90000-0x000000000830A000-memory.dmp

        Filesize

        6.5MB

      • memory/972-46-0x0000000007870000-0x0000000007906000-memory.dmp

        Filesize

        600KB

      • memory/972-28-0x00000000062C0000-0x00000000062DE000-memory.dmp

        Filesize

        120KB

      • memory/972-29-0x00000000062E0000-0x000000000632C000-memory.dmp

        Filesize

        304KB

      • memory/972-30-0x0000000007460000-0x0000000007492000-memory.dmp

        Filesize

        200KB

      • memory/972-31-0x000000006F600000-0x000000006F64C000-memory.dmp

        Filesize

        304KB

      • memory/972-41-0x0000000007440000-0x000000000745E000-memory.dmp

        Filesize

        120KB

      • memory/972-42-0x00000000074B0000-0x0000000007553000-memory.dmp

        Filesize

        652KB

      • memory/972-17-0x0000000005C70000-0x0000000005CD6000-memory.dmp

        Filesize

        408KB

      • memory/972-44-0x0000000007610000-0x000000000762A000-memory.dmp

        Filesize

        104KB

      • memory/972-45-0x0000000007660000-0x000000000766A000-memory.dmp

        Filesize

        40KB

      • memory/972-27-0x0000000005CE0000-0x0000000006034000-memory.dmp

        Filesize

        3.3MB

      • memory/972-47-0x0000000007810000-0x0000000007821000-memory.dmp

        Filesize

        68KB

      • memory/972-48-0x0000000007830000-0x000000000783E000-memory.dmp

        Filesize

        56KB

      • memory/972-49-0x0000000007840000-0x0000000007854000-memory.dmp

        Filesize

        80KB

      • memory/972-50-0x0000000007930000-0x000000000794A000-memory.dmp

        Filesize

        104KB

      • memory/972-51-0x0000000007910000-0x0000000007918000-memory.dmp

        Filesize

        32KB

      • memory/972-16-0x00000000059D0000-0x0000000005A36000-memory.dmp

        Filesize

        408KB

      • memory/972-15-0x0000000005300000-0x0000000005322000-memory.dmp

        Filesize

        136KB

      • memory/972-13-0x0000000004D10000-0x0000000004D46000-memory.dmp

        Filesize

        216KB

      • memory/972-14-0x00000000053A0000-0x00000000059C8000-memory.dmp

        Filesize

        6.2MB

      • memory/3832-73-0x00000000000D0000-0x00000000000D6000-memory.dmp

        Filesize

        24KB