Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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 11 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 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.

  • 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 9 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
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 38 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:3520
      • 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⤵
        • System Location Discovery: System Language Discovery
        • Enumerates system info in registry
        • Suspicious use of WriteProcessMemory
        PID:372
        • C:\Users\Admin\AppData\Local\Temp\D63C.exe
          "C:\Users\Admin\AppData\Local\Temp\D63C.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3012
          • C:\Users\Admin\AppData\Local\Temp\2489820357.exe
            C:\Users\Admin\AppData\Local\Temp\2489820357.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:2520
            • C:\Windows\sysnldcvmr.exe
              C:\Windows\sysnldcvmr.exe
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:1360
              • C:\Users\Admin\AppData\Local\Temp\2019928614.exe
                C:\Users\Admin\AppData\Local\Temp\2019928614.exe
                6⤵
                • Checks computer location settings
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:2216
                • 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:4364
                  • C:\Windows\system32\reg.exe
                    reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f
                    8⤵
                      PID:2652
                  • C:\Windows\System32\cmd.exe
                    "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "Windows Upgrade Manager"
                    7⤵
                    • Suspicious use of WriteProcessMemory
                    PID:4772
                    • C:\Windows\system32\schtasks.exe
                      schtasks /delete /f /tn "Windows Upgrade Manager"
                      8⤵
                        PID:2252
                  • C:\Users\Admin\AppData\Local\Temp\1031220184.exe
                    C:\Users\Admin\AppData\Local\Temp\1031220184.exe
                    6⤵
                    • Executes dropped EXE
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of WriteProcessMemory
                    PID:3240
                    • C:\Users\Admin\AppData\Local\Temp\2696810396.exe
                      C:\Users\Admin\AppData\Local\Temp\2696810396.exe
                      7⤵
                      • Suspicious use of NtCreateUserProcessOtherParentProcess
                      • Executes dropped EXE
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2044
                  • C:\Users\Admin\AppData\Local\Temp\271708388.exe
                    C:\Users\Admin\AppData\Local\Temp\271708388.exe
                    6⤵
                    • Executes dropped EXE
                    • System Location Discovery: System Language Discovery
                    PID:5104
                  • C:\Users\Admin\AppData\Local\Temp\580229666.exe
                    C:\Users\Admin\AppData\Local\Temp\580229666.exe
                    6⤵
                    • Executes dropped EXE
                    • System Location Discovery: System Language Discovery
                    PID:532
                  • C:\Users\Admin\AppData\Local\Temp\1203718683.exe
                    C:\Users\Admin\AppData\Local\Temp\1203718683.exe
                    6⤵
                    • Executes dropped EXE
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of WriteProcessMemory
                    PID:1136
                    • C:\Users\Admin\AppData\Local\Temp\2603710378.exe
                      C:\Users\Admin\AppData\Local\Temp\2603710378.exe
                      7⤵
                      • Executes dropped EXE
                      • System Location Discovery: System Language Discovery
                      PID:4696
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 372 -s 1540
              3⤵
              • Program crash
              PID:4736
          • 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
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:5052
          • C:\Windows\System32\schtasks.exe
            C:\Windows\System32\schtasks.exe /run /tn "Microsoft Windows Security"
            2⤵
              PID:1868
            • 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
              • Suspicious behavior: EnumeratesProcesses
              PID:4540
            • C:\Windows\System32\conhost.exe
              C:\Windows\System32\conhost.exe
              2⤵
                PID:4224
              • C:\Windows\System32\dwm.exe
                C:\Windows\System32\dwm.exe
                2⤵
                • Suspicious use of FindShellTrayWindow
                • Suspicious use of SendNotifyMessage
                PID:1740
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 372 -ip 372
              1⤵
                PID:1900
              • C:\Users\Admin\Microsoft Windows Security\winupsecvmgr.exe
                "C:\Users\Admin\Microsoft Windows Security\winupsecvmgr.exe"
                1⤵
                • Suspicious use of NtCreateUserProcessOtherParentProcess
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of WriteProcessMemory
                PID:4436

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

                Filesize

                3KB

                MD5

                fee026663fcb662152188784794028ee

                SHA1

                3c02a26a9cb16648fad85c6477b68ced3cb0cb45

                SHA256

                dbd4136bc342e3e92902ec3a30d165452c82997a7ae24ac90775e42d88959e6b

                SHA512

                7b12bd5c8fc4356b9123d6586b4980cf76012663b41c0dab6f6f21567e2f4005c5bcea2cc2158d157e4f801a281f3e04bad3774cddb3122db309ccf662184bd6

              • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

                Filesize

                1KB

                MD5

                2ac3c9ba89b8c2ef19c601ecebb82157

                SHA1

                a239a4b11438c00e5ff89ebd4a804ede6a01935b

                SHA256

                3c2714ce07f8c04b3f8222dfe50d8ae08f548b0e6e79fe33d08bf6f4c2e5143e

                SHA512

                b1221d29e747b37071761b2509e9109b522cce6411f73f27c9428ac332d26b9f413ae6b8c0aeac1afb7fab2d0b3b1c4af189da12fe506287596df2ef8f083432

              • C:\Users\Admin\AppData\Local\Temp\1031220184.exe

                Filesize

                10KB

                MD5

                96509ab828867d81c1693b614b22f41d

                SHA1

                c5f82005dbda43cedd86708cc5fc3635a781a67e

                SHA256

                a9de2927b0ec45cf900508fec18531c04ee9fa8a5dfe2fc82c67d9458cf4b744

                SHA512

                ff603117a06da8fb2386c1d2049a5896774e41f34d05951ecd4e7b5fc9da51a373e3fcf61af3577ff78490cf898471ce8e71eae848a12812fe98cd7e76e1a9ca

              • C:\Users\Admin\AppData\Local\Temp\1203718683.exe

                Filesize

                10KB

                MD5

                bf42134abc9396d90ef04f3ff2a99864

                SHA1

                6cee84cb1b5fbf9eddf22baea16540496698e3a4

                SHA256

                e5d2a0c8ce4567ff22d6e3b2107c3761f4cecdd5782701ae10017ff8e4605980

                SHA512

                ff3c0af697bb38ff65c11195c1d39a78645dbd88cc39ff53f86500b9fc63b9df1bfeb58ace00196349dbb7c46d0e595adcba52952d0743ddfd68f949fb62663b

              • C:\Users\Admin\AppData\Local\Temp\2019928614.exe

                Filesize

                8KB

                MD5

                cb8420e681f68db1bad5ed24e7b22114

                SHA1

                416fc65d538d3622f5ca71c667a11df88a927c31

                SHA256

                5850892f67f85991b31fc90f62c8b7791afeb3c08ae1877d857aa2b59471a2ea

                SHA512

                baaabcc4ad5d409267a34ed7b20e4afb4d247974bfc581d39aae945e5bf8a673a1f8eacae2e6783480c8baaeb0a80d028274a202d456f13d0af956afa0110fdf

              • C:\Users\Admin\AppData\Local\Temp\2489820357.exe

                Filesize

                79KB

                MD5

                0c883b1d66afce606d9830f48d69d74b

                SHA1

                fe431fe73a4749722496f19b3b3ca0b629b50131

                SHA256

                d921fc993574c8be76553bcf4296d2851e48ee39b958205e69bdfd7cf661d2b1

                SHA512

                c047452a23efad4262479fbfeb5e23f9497d7cefd4cbb58e869801206669c2a0759698c70d18050316798d5d939b989537fdce3842aa742449f5e08ed7fa60a5

              • C:\Users\Admin\AppData\Local\Temp\2603710378.exe

                Filesize

                20KB

                MD5

                b8f5d9790eefcbc350438023228e2299

                SHA1

                0119029c630b10465f79f3ba4cbc4c5e56aa3c83

                SHA256

                63eef8c5f6f413655960d5ed84409441840ab669501e5e6d36f97341467a24c5

                SHA512

                7f3204e3e794a9fa1e54f0ddee449cfff1d92ee96ec1ccb3197ccc3f86ad6409f7a6859645bb56a7c20a09b9dffadbd677a7aa15a4d19fe8ee86da3eb78767f3

              • C:\Users\Admin\AppData\Local\Temp\2696810396.exe

                Filesize

                5.6MB

                MD5

                13b26b2c7048a92d6a843c1302618fad

                SHA1

                89c2dfc01ac12ef2704c7669844ec69f1700c1ca

                SHA256

                1753ad35ece25ab9a19048c70062e9170f495e313d7355ebbba59c38f5d90256

                SHA512

                d6aff89b61c9945002a6798617ad304612460a607ef1cfbdcb32f8932ca648bcee1d5f2e0321bb4c58c1f4642b1e0ececc1eb82450fdec7dff69b5389f195455

              • C:\Users\Admin\AppData\Local\Temp\271708388.exe

                Filesize

                15KB

                MD5

                0c37ee292fec32dba0420e6c94224e28

                SHA1

                012cbdddaddab319a4b3ae2968b42950e929c46b

                SHA256

                981d724feebc36777e99513dc061d1f009e589f965c920797285c46d863060d1

                SHA512

                2b60b571c55d0441ba0cfc695f9db5cd12660ebec7effc7e893c3b7a1c6cb6149df487c31b8d748697e260cbc4af29331592b705ea9638f64a711c7a6164628b

              • C:\Users\Admin\AppData\Local\Temp\580229666.exe

                Filesize

                49KB

                MD5

                c38ea1b0838858f21ea572f60c69de0c

                SHA1

                f5e34c47b0630056ba00df97641926f9579b384a

                SHA256

                cae7ef69cce550af020bfc474c6e035882383b022d63e926c52bd8c3ad1d78e4

                SHA512

                f9c55f31b9466c412711462322c167aadb72492d70fe5fe89ab5500b86eae8f42de29bc3e469b3f73eab9dd47061b51410d5bee444da0bad719c94c897c59d72

              • C:\Users\Admin\AppData\Local\Temp\D63C.exe

                Filesize

                9KB

                MD5

                8d8e6c7952a9dc7c0c73911c4dbc5518

                SHA1

                9098da03b33b2c822065b49d5220359c275d5e94

                SHA256

                feb4c3ae4566f0acbb9e0f55417b61fefd89dc50a4e684df780813fb01d61278

                SHA512

                91a573843c28dd32a9f31a60ba977f9a3d4bb19ffd1b7254333e09bcecef348c1b3220a348ebb2cb08edb57d56cb7737f026519da52199c9dc62c10aea236645

              • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gdwnim2j.i2x.ps1

                Filesize

                60B

                MD5

                d17fe0a3f47be24a6453e9ef58c94641

                SHA1

                6ab83620379fc69f80c0242105ddffd7d98d5d9d

                SHA256

                96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                SHA512

                5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

              • memory/1740-113-0x00007FF78E060000-0x00007FF78E84F000-memory.dmp

                Filesize

                7.9MB

              • memory/1740-109-0x00007FF78E060000-0x00007FF78E84F000-memory.dmp

                Filesize

                7.9MB

              • memory/1740-120-0x00007FF78E060000-0x00007FF78E84F000-memory.dmp

                Filesize

                7.9MB

              • memory/1740-118-0x00007FF78E060000-0x00007FF78E84F000-memory.dmp

                Filesize

                7.9MB

              • memory/1740-115-0x00007FF78E060000-0x00007FF78E84F000-memory.dmp

                Filesize

                7.9MB

              • memory/1740-88-0x0000027C161F0000-0x0000027C16210000-memory.dmp

                Filesize

                128KB

              • memory/1740-102-0x00007FF78E060000-0x00007FF78E84F000-memory.dmp

                Filesize

                7.9MB

              • memory/1740-105-0x00007FF78E060000-0x00007FF78E84F000-memory.dmp

                Filesize

                7.9MB

              • memory/1740-122-0x00007FF78E060000-0x00007FF78E84F000-memory.dmp

                Filesize

                7.9MB

              • memory/1740-107-0x00007FF78E060000-0x00007FF78E84F000-memory.dmp

                Filesize

                7.9MB

              • memory/1740-111-0x00007FF78E060000-0x00007FF78E84F000-memory.dmp

                Filesize

                7.9MB

              • memory/2044-62-0x00007FF62CC70000-0x00007FF62D207000-memory.dmp

                Filesize

                5.6MB

              • memory/2216-28-0x0000000000010000-0x0000000000016000-memory.dmp

                Filesize

                24KB

              • memory/4224-101-0x00007FF7056E0000-0x00007FF705709000-memory.dmp

                Filesize

                164KB

              • memory/4224-104-0x00007FF7056E0000-0x00007FF705709000-memory.dmp

                Filesize

                164KB

              • memory/4436-87-0x00007FF65D250000-0x00007FF65D7E7000-memory.dmp

                Filesize

                5.6MB

              • memory/5052-53-0x000002B0FD150000-0x000002B0FD172000-memory.dmp

                Filesize

                136KB