Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2024 20:25

General

  • Target

    2024-11-23_669c8cc562e81ad860e00c411b9c7b58_bkransomware.exe

  • Size

    6.2MB

  • MD5

    669c8cc562e81ad860e00c411b9c7b58

  • SHA1

    106a606964022260209e4d2d9f856a2b360f250f

  • SHA256

    86919a8a99f706812294e2c241ae602f611e0336f49f2699edb833ee9c88945f

  • SHA512

    2e4851e661a8039f3a9ec181b994073ec9882d31e191e4fb10b63a734ec6e332b810270612f7f5eeccd3796935ca8b12df58ccf7598baf6575db5882975aef23

  • SSDEEP

    98304:6bzPGKfLnqmZjQa/LOg6MmYykewKc2oClrqg78SJDsE7nw/aMnxT8:6bz1LDUCWB5sEdwxT8

Malware Config

Extracted

Family

phorphiex

C2

http://185.215.113.66/

http://91.202.233.141/

Wallets

0xCa90599132C4D88907Bd8E046540284aa468a035

TRuGGXNDM1cavQ1AqMQHG8yfxP4QWVSMN6

qph44jx8r9k5xeq5cuf958krv3ewrnp5vc6hhdjd3r

XryzFMFVpDUvU7famUGf214EXD3xNUSmQf

rsXCXBf9SagxV8JfC12d8Bybk84oPdMNN9

AULzfBuUAPfCGAXoG5Vq14aP9s6fx3AH4Z

LdgchXq1sKbAaAJ1EXAPSRBzLb8jnTZstT

MP8GEm8QpYgQYaMo8oM5NQhRBgDGiLZW5Q

4AtjkCVKbtEC3UEN77SQHuH9i1XkzNiRi5VCbA2XGsJh46nJSXfGQn4GjLuupCqmC57Lo7LvKmFUyRfhtJSvKvuw3h9ReKK

15TssKwtjMtwy4vDLcLsQUZUD2B9f7eDjw85sBNVC5LRPPnC

1BzmrjmKPKSR2hH5BeJySfiVA676E8DYaK

ltc1qt0n3f0t7vz9k0mvcswk477shrxwjhf9sj5ykrp

3PMiLynrGVZ8oEqvoqC4hXD67B1WoALR4pc

3ESHude8zUHksQg1h6hHmzY79BS36L91Yn

DLUzwvyxN1RrwjByUPPzVMdfxNRPGVRMMA

t1J6GCPCiHW1eRdjJgDDu6b1vSVmL5U7Twh

stars125f3mw4xd9htpsq4zj5w5ezm5gags37yxxh6mj

bnb1msyt0djx4ecspfxg5en0ye465kg3kmv9utzml2

bc1ppypcmu3684n648gyj62gjp2rw0xy7w3vwfamatlg29ajp4z52desafa0sr

bc1qc9edl4hzl9jyt8twdad3zjeh2df2znq96tdezd

Attributes
  • mutex

    753f85d83d

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Extracted

Family

phorphiex

C2

http://185.215.113.84

http://185.215.113.66

185.215.113.66

Signatures

  • 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.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 5 IoCs
  • Xmrig family
  • xmrig

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

  • XMRig Miner payload 7 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 11 IoCs
  • Loads dropped DLL 11 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 54 IoCs
  • Suspicious use of WriteProcessMemory 64 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:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1180
      • C:\Users\Admin\AppData\Local\Temp\2024-11-23_669c8cc562e81ad860e00c411b9c7b58_bkransomware.exe
        "C:\Users\Admin\AppData\Local\Temp\2024-11-23_669c8cc562e81ad860e00c411b9c7b58_bkransomware.exe"
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Enumerates system info in registry
        • Suspicious use of WriteProcessMemory
        PID:2904
        • C:\Users\Admin\AppData\Local\Temp\7D1C.exe
          "C:\Users\Admin\AppData\Local\Temp\7D1C.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2876
          • C:\Users\Admin\AppData\Local\Temp\897210665.exe
            C:\Users\Admin\AppData\Local\Temp\897210665.exe
            4⤵
            • 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:2748
            • C:\Windows\sysnldcvmr.exe
              C:\Windows\sysnldcvmr.exe
              5⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:1548
              • C:\Users\Admin\AppData\Local\Temp\129346665.exe
                C:\Users\Admin\AppData\Local\Temp\129346665.exe
                6⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:2264
                • C:\Windows\System32\cmd.exe
                  "C:\Windows\System32\cmd.exe" /c reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f
                  7⤵
                  • Suspicious use of WriteProcessMemory
                  PID:2716
                  • C:\Windows\system32\reg.exe
                    reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f
                    8⤵
                      PID:1280
                  • C:\Windows\System32\cmd.exe
                    "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "Windows Upgrade Manager"
                    7⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2224
                    • C:\Windows\system32\schtasks.exe
                      schtasks /delete /f /tn "Windows Upgrade Manager"
                      8⤵
                        PID:1148
                  • C:\Users\Admin\AppData\Local\Temp\2322527555.exe
                    C:\Users\Admin\AppData\Local\Temp\2322527555.exe
                    6⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of WriteProcessMemory
                    PID:2192
                    • C:\Users\Admin\AppData\Local\Temp\3831317797.exe
                      C:\Users\Admin\AppData\Local\Temp\3831317797.exe
                      7⤵
                      • Suspicious use of NtCreateUserProcessOtherParentProcess
                      • Executes dropped EXE
                      • Suspicious behavior: EnumeratesProcesses
                      PID:540
                  • C:\Users\Admin\AppData\Local\Temp\1766616588.exe
                    C:\Users\Admin\AppData\Local\Temp\1766616588.exe
                    6⤵
                    • Executes dropped EXE
                    PID:1220
                  • C:\Users\Admin\AppData\Local\Temp\117525014.exe
                    C:\Users\Admin\AppData\Local\Temp\117525014.exe
                    6⤵
                    • Executes dropped EXE
                    PID:1920
                  • C:\Users\Admin\AppData\Local\Temp\1855623290.exe
                    C:\Users\Admin\AppData\Local\Temp\1855623290.exe
                    6⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of WriteProcessMemory
                    PID:1996
                    • C:\Users\Admin\AppData\Local\Temp\1177813584.exe
                      C:\Users\Admin\AppData\Local\Temp\1177813584.exe
                      7⤵
                      • Executes dropped EXE
                      PID:1288
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 2904 -s 1004
              3⤵
              • Program crash
              PID:3048
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#evrkcgqew#> IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /tn 'Microsoft Windows Security' /tr '''C:\Users\Admin\Microsoft Windows Security\winupsecvmgr.exe''' } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\Microsoft Windows Security\winupsecvmgr.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'Microsoft Windows Security' -RunLevel 'Highest' -Force; }
            2⤵
            • Command and Scripting Interpreter: PowerShell
            • Drops file in System32 directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2316
            • C:\Windows\system32\schtasks.exe
              "C:\Windows\system32\schtasks.exe" /create /f /sc onlogon /rl highest /tn "Microsoft Windows Security" /tr "'C:\Users\Admin\Microsoft Windows Security\winupsecvmgr.exe'"
              3⤵
              • Scheduled Task/Job: Scheduled Task
              PID:1792
          • C:\Windows\System32\schtasks.exe
            C:\Windows\System32\schtasks.exe /run /tn "Microsoft Windows Security"
            2⤵
              PID:884
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#evrkcgqew#> IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /tn 'Microsoft Windows Security' /tr '''C:\Users\Admin\Microsoft Windows Security\winupsecvmgr.exe''' } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\Microsoft Windows Security\winupsecvmgr.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'Microsoft Windows Security' -RunLevel 'Highest' -Force; }
              2⤵
              • Command and Scripting Interpreter: PowerShell
              • Drops file in System32 directory
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:2912
              • C:\Windows\system32\schtasks.exe
                "C:\Windows\system32\schtasks.exe" /create /f /sc onlogon /rl highest /tn "Microsoft Windows Security" /tr "'C:\Users\Admin\Microsoft Windows Security\winupsecvmgr.exe'"
                3⤵
                • Scheduled Task/Job: Scheduled Task
                PID:2784
            • C:\Windows\System32\conhost.exe
              C:\Windows\System32\conhost.exe
              2⤵
                PID:2828
              • C:\Windows\System32\dwm.exe
                C:\Windows\System32\dwm.exe
                2⤵
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of FindShellTrayWindow
                • Suspicious use of SendNotifyMessage
                PID:2732
            • C:\Windows\system32\taskeng.exe
              taskeng.exe {BB519A60-6AB2-417F-949C-51C821282FFD} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
              1⤵
              • Loads dropped DLL
              PID:2604
              • C:\Users\Admin\Microsoft Windows Security\winupsecvmgr.exe
                "C:\Users\Admin\Microsoft Windows Security\winupsecvmgr.exe"
                2⤵
                • Suspicious use of NtCreateUserProcessOtherParentProcess
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of WriteProcessMemory
                PID:1532

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\1855623290.exe

              Filesize

              10KB

              MD5

              bf42134abc9396d90ef04f3ff2a99864

              SHA1

              6cee84cb1b5fbf9eddf22baea16540496698e3a4

              SHA256

              e5d2a0c8ce4567ff22d6e3b2107c3761f4cecdd5782701ae10017ff8e4605980

              SHA512

              ff3c0af697bb38ff65c11195c1d39a78645dbd88cc39ff53f86500b9fc63b9df1bfeb58ace00196349dbb7c46d0e595adcba52952d0743ddfd68f949fb62663b

            • C:\Users\Admin\AppData\Local\Temp\3831317797.exe

              Filesize

              5.6MB

              MD5

              13b26b2c7048a92d6a843c1302618fad

              SHA1

              89c2dfc01ac12ef2704c7669844ec69f1700c1ca

              SHA256

              1753ad35ece25ab9a19048c70062e9170f495e313d7355ebbba59c38f5d90256

              SHA512

              d6aff89b61c9945002a6798617ad304612460a607ef1cfbdcb32f8932ca648bcee1d5f2e0321bb4c58c1f4642b1e0ececc1eb82450fdec7dff69b5389f195455

            • C:\Users\Admin\AppData\Local\Temp\7D1C.exe

              Filesize

              9KB

              MD5

              8d8e6c7952a9dc7c0c73911c4dbc5518

              SHA1

              9098da03b33b2c822065b49d5220359c275d5e94

              SHA256

              feb4c3ae4566f0acbb9e0f55417b61fefd89dc50a4e684df780813fb01d61278

              SHA512

              91a573843c28dd32a9f31a60ba977f9a3d4bb19ffd1b7254333e09bcecef348c1b3220a348ebb2cb08edb57d56cb7737f026519da52199c9dc62c10aea236645

            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

              Filesize

              7KB

              MD5

              e7dde9787832c7ae2c15228cacd1dbab

              SHA1

              5c9312a921be3a38df64e4b24e0a28cc4b6d8bed

              SHA256

              0fac078fd6810c36f2b3350b695acf96838cbce9a509e28d58234bdee4f9c8a7

              SHA512

              4fffec73f2b388f4c71a2c963b4baba65f5f890a022683282fdd8924d47dd52a29c0c67cc43091e5726a03efd1ede925d5e777ace0daaffe483621728424109c

            • \Users\Admin\AppData\Local\Temp\117525014.exe

              Filesize

              49KB

              MD5

              c38ea1b0838858f21ea572f60c69de0c

              SHA1

              f5e34c47b0630056ba00df97641926f9579b384a

              SHA256

              cae7ef69cce550af020bfc474c6e035882383b022d63e926c52bd8c3ad1d78e4

              SHA512

              f9c55f31b9466c412711462322c167aadb72492d70fe5fe89ab5500b86eae8f42de29bc3e469b3f73eab9dd47061b51410d5bee444da0bad719c94c897c59d72

            • \Users\Admin\AppData\Local\Temp\1177813584.exe

              Filesize

              20KB

              MD5

              b8f5d9790eefcbc350438023228e2299

              SHA1

              0119029c630b10465f79f3ba4cbc4c5e56aa3c83

              SHA256

              63eef8c5f6f413655960d5ed84409441840ab669501e5e6d36f97341467a24c5

              SHA512

              7f3204e3e794a9fa1e54f0ddee449cfff1d92ee96ec1ccb3197ccc3f86ad6409f7a6859645bb56a7c20a09b9dffadbd677a7aa15a4d19fe8ee86da3eb78767f3

            • \Users\Admin\AppData\Local\Temp\129346665.exe

              Filesize

              8KB

              MD5

              cb8420e681f68db1bad5ed24e7b22114

              SHA1

              416fc65d538d3622f5ca71c667a11df88a927c31

              SHA256

              5850892f67f85991b31fc90f62c8b7791afeb3c08ae1877d857aa2b59471a2ea

              SHA512

              baaabcc4ad5d409267a34ed7b20e4afb4d247974bfc581d39aae945e5bf8a673a1f8eacae2e6783480c8baaeb0a80d028274a202d456f13d0af956afa0110fdf

            • \Users\Admin\AppData\Local\Temp\1766616588.exe

              Filesize

              15KB

              MD5

              0c37ee292fec32dba0420e6c94224e28

              SHA1

              012cbdddaddab319a4b3ae2968b42950e929c46b

              SHA256

              981d724feebc36777e99513dc061d1f009e589f965c920797285c46d863060d1

              SHA512

              2b60b571c55d0441ba0cfc695f9db5cd12660ebec7effc7e893c3b7a1c6cb6149df487c31b8d748697e260cbc4af29331592b705ea9638f64a711c7a6164628b

            • \Users\Admin\AppData\Local\Temp\2322527555.exe

              Filesize

              10KB

              MD5

              96509ab828867d81c1693b614b22f41d

              SHA1

              c5f82005dbda43cedd86708cc5fc3635a781a67e

              SHA256

              a9de2927b0ec45cf900508fec18531c04ee9fa8a5dfe2fc82c67d9458cf4b744

              SHA512

              ff603117a06da8fb2386c1d2049a5896774e41f34d05951ecd4e7b5fc9da51a373e3fcf61af3577ff78490cf898471ce8e71eae848a12812fe98cd7e76e1a9ca

            • \Users\Admin\AppData\Local\Temp\897210665.exe

              Filesize

              79KB

              MD5

              0c883b1d66afce606d9830f48d69d74b

              SHA1

              fe431fe73a4749722496f19b3b3ca0b629b50131

              SHA256

              d921fc993574c8be76553bcf4296d2851e48ee39b958205e69bdfd7cf661d2b1

              SHA512

              c047452a23efad4262479fbfeb5e23f9497d7cefd4cbb58e869801206669c2a0759698c70d18050316798d5d939b989537fdce3842aa742449f5e08ed7fa60a5

            • memory/540-91-0x000000013FD40000-0x00000001402D7000-memory.dmp

              Filesize

              5.6MB

            • memory/1532-104-0x000000013FE30000-0x00000001403C7000-memory.dmp

              Filesize

              5.6MB

            • memory/1532-108-0x000000013FE30000-0x00000001403C7000-memory.dmp

              Filesize

              5.6MB

            • memory/2264-37-0x000000013F9E0000-0x000000013F9E6000-memory.dmp

              Filesize

              24KB

            • memory/2316-87-0x000000001B0E0000-0x000000001B3C2000-memory.dmp

              Filesize

              2.9MB

            • memory/2316-88-0x00000000022D0000-0x00000000022D8000-memory.dmp

              Filesize

              32KB

            • memory/2732-113-0x0000000140000000-0x00000001407EF000-memory.dmp

              Filesize

              7.9MB

            • memory/2732-120-0x0000000140000000-0x00000001407EF000-memory.dmp

              Filesize

              7.9MB

            • memory/2732-118-0x0000000140000000-0x00000001407EF000-memory.dmp

              Filesize

              7.9MB

            • memory/2732-116-0x0000000140000000-0x00000001407EF000-memory.dmp

              Filesize

              7.9MB

            • memory/2732-109-0x00000000000B0000-0x00000000000D0000-memory.dmp

              Filesize

              128KB

            • memory/2732-111-0x0000000140000000-0x00000001407EF000-memory.dmp

              Filesize

              7.9MB

            • memory/2828-110-0x0000000140000000-0x0000000140029000-memory.dmp

              Filesize

              164KB

            • memory/2828-105-0x0000000140000000-0x0000000140029000-memory.dmp

              Filesize

              164KB

            • memory/2912-99-0x000000001B180000-0x000000001B462000-memory.dmp

              Filesize

              2.9MB

            • memory/2912-100-0x00000000024E0000-0x00000000024E8000-memory.dmp

              Filesize

              32KB