Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-10-2024 00:35

General

  • Target

    2024-10-16_ca22db896e169195523be246ee685e4d_cobalt-strike_hijackloader_ryuk.exe

  • Size

    2.1MB

  • MD5

    ca22db896e169195523be246ee685e4d

  • SHA1

    c7f399c2314dbd81da4a6ce5ec7875181bad7e5f

  • SHA256

    9106395ddc362fe7b169d97eb7266c85e91b9d1c1934e27e2ea06ac8fa947e2d

  • SHA512

    180b91fd83c496dd4f63a1b60e07daea50fa84b5ca56ff1b4848c45603870fa70ba6d32458a24a3d03a1120ee0e72013a703a941ea2723b8270f76cf3b4323ce

  • SSDEEP

    24576:TxSXu0frXd2agL9T+YEt5RFgbBbx97z7fIoggWD:TxSe0zXUagBTpEHRqbBvz7Rg

Malware Config

Extracted

Family

phorphiex

C2

http://185.215.113.66/

http://91.202.233.141/

Wallets

0xCa90599132C4D88907Bd8E046540284aa468a035

TRuGGXNDM1cavQ1AqMQHG8yfxP4QWVSMN6

qph44jx8r9k5xeq5cuf958krv3ewrnp5vc6hhdjd3r

XryzFMFVpDUvU7famUGf214EXD3xNUSmQf

rsXCXBf9SagxV8JfC12d8Bybk84oPdMNN9

AULzfBuUAPfCGAXoG5Vq14aP9s6fx3AH4Z

LTK4xdKPAgFHPLan8kriAD7eY4heyy73mB

MP8GEm8QpYgQYaMo8oM5NQhRBgDGiLZW5Q

4BB7ckkaPTyADc8trtuwDoZxywaR4eNL5cDJ3KBjq9GraN4mUFztf7mLS7WgT7Bh7uPqpjvA4ypVwXKCJ1vvLWWAFvSmDoD

15TssKwtjMtwy4vDLcLsQUZUD2B9f7eDjw85sBNVC5LRPPnC

1BzmrjmKPKSR2hH5BeJySfiVA676E8DYaK

ltc1qt0n3f0t7vz9k0mvcswk477shrxwjhf9sj5ykrp

3PMiLynrGVZ8oEqvoqC4hXD67B1WoALR4pc

3ESHude8zUHksQg1h6hHmzY79BS36L91Yn

DLUzwvyxN1RrwjByUPPzVMdfxNRPGVRMMA

t1J6GCPCiHW1eRdjJgDDu6b1vSVmL5U7Twh

stars125f3mw4xd9htpsq4zj5w5ezm5gags37yxxh6mj

bnb1msyt0djx4ecspfxg5en0ye465kg3kmv9utzml2

bc1ppypcmu3684n648gyj62gjp2rw0xy7w3vwfamatlg29ajp4z52desafa0sr

bc1qc9edl4hzl9jyt8twdad3zjeh2df2znq96tdezd

Attributes
  • mutex

    mmn7nnm8na

  • 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

Signatures

  • Modifies security service 2 TTPs 1 IoCs
  • 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 2 IoCs

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

  • Executes dropped EXE 3 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 12 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 39 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-16_ca22db896e169195523be246ee685e4d_cobalt-strike_hijackloader_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-16_ca22db896e169195523be246ee685e4d_cobalt-strike_hijackloader_ryuk.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2020
    • C:\Users\Admin\AppData\Local\Temp\7D6D.exe
      "C:\Users\Admin\AppData\Local\Temp\7D6D.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4924
      • C:\Users\Admin\AppData\Local\Temp\2712411754.exe
        C:\Users\Admin\AppData\Local\Temp\2712411754.exe
        3⤵
        • 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:2380
        • C:\Windows\sysppvrdnvs.exe
          C:\Windows\sysppvrdnvs.exe
          4⤵
          • 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:3852
          • 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"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2196
            • 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"
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:5084
          • 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
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:3992
            • C:\Windows\SysWOW64\sc.exe
              sc stop UsoSvc
              6⤵
              • Launches sc.exe
              • System Location Discovery: System Language Discovery
              PID:2944
            • C:\Windows\SysWOW64\sc.exe
              sc stop WaaSMedicSvc
              6⤵
              • Launches sc.exe
              • System Location Discovery: System Language Discovery
              PID:1612
            • C:\Windows\SysWOW64\sc.exe
              sc stop wuauserv
              6⤵
              • Launches sc.exe
              • System Location Discovery: System Language Discovery
              PID:4792
            • C:\Windows\SysWOW64\sc.exe
              sc stop DoSvc
              6⤵
              • Launches sc.exe
              • System Location Discovery: System Language Discovery
              PID:1860
            • C:\Windows\SysWOW64\sc.exe
              sc stop BITS /wait
              6⤵
              • Launches sc.exe
              • System Location Discovery: System Language Discovery
              PID:5068
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" http://chrome.360.cn/
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:616
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:616 CREDAT:17410 /prefetch:2
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:3412

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver1066.tmp

    Filesize

    15KB

    MD5

    1a545d0052b581fbb2ab4c52133846bc

    SHA1

    62f3266a9b9925cd6d98658b92adec673cbe3dd3

    SHA256

    557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

    SHA512

    bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\3DWZNJ32\suggestions[1].en-US

    Filesize

    17KB

    MD5

    5a34cb996293fde2cb7a4ac89587393a

    SHA1

    3c96c993500690d1a77873cd62bc639b3a10653f

    SHA256

    c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

    SHA512

    e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

  • C:\Users\Admin\AppData\Local\Temp\2712411754.exe

    Filesize

    83KB

    MD5

    06560b5e92d704395bc6dae58bc7e794

    SHA1

    fbd3e4ae28620197d1f02bfc24adaf4ddacd2372

    SHA256

    9eaaadf3857e4a3e83f4f78d96ab185213b6528c8e470807f9d16035daadf33d

    SHA512

    b55b49fc1bd526c47d88fcf8a20fcaed900bfb291f2e3e1186ec196a87127ed24df71385ae04fedcc802c362c4ebf38edfc182013febf4496ddeb66ce5195ee3

  • C:\Users\Admin\AppData\Local\Temp\7D6D.exe

    Filesize

    9KB

    MD5

    8d8e6c7952a9dc7c0c73911c4dbc5518

    SHA1

    9098da03b33b2c822065b49d5220359c275d5e94

    SHA256

    feb4c3ae4566f0acbb9e0f55417b61fefd89dc50a4e684df780813fb01d61278

    SHA512

    91a573843c28dd32a9f31a60ba977f9a3d4bb19ffd1b7254333e09bcecef348c1b3220a348ebb2cb08edb57d56cb7737f026519da52199c9dc62c10aea236645

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sqvtynmh.xxw.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/5084-36-0x000000006C4D0000-0x000000006C51C000-memory.dmp

    Filesize

    304KB

  • memory/5084-49-0x0000000007B10000-0x0000000007B2A000-memory.dmp

    Filesize

    104KB

  • memory/5084-22-0x00000000061D0000-0x0000000006236000-memory.dmp

    Filesize

    408KB

  • memory/5084-32-0x0000000006240000-0x0000000006594000-memory.dmp

    Filesize

    3.3MB

  • memory/5084-33-0x00000000067E0000-0x00000000067FE000-memory.dmp

    Filesize

    120KB

  • memory/5084-34-0x0000000006810000-0x000000000685C000-memory.dmp

    Filesize

    304KB

  • memory/5084-35-0x00000000079C0000-0x00000000079F2000-memory.dmp

    Filesize

    200KB

  • memory/5084-20-0x0000000005840000-0x0000000005862000-memory.dmp

    Filesize

    136KB

  • memory/5084-46-0x0000000007980000-0x000000000799E000-memory.dmp

    Filesize

    120KB

  • memory/5084-47-0x0000000007A00000-0x0000000007AA3000-memory.dmp

    Filesize

    652KB

  • memory/5084-48-0x00000000081C0000-0x000000000883A000-memory.dmp

    Filesize

    6.5MB

  • memory/5084-21-0x00000000060F0000-0x0000000006156000-memory.dmp

    Filesize

    408KB

  • memory/5084-50-0x0000000007B80000-0x0000000007B8A000-memory.dmp

    Filesize

    40KB

  • memory/5084-51-0x0000000007D90000-0x0000000007E26000-memory.dmp

    Filesize

    600KB

  • memory/5084-52-0x0000000007D30000-0x0000000007D41000-memory.dmp

    Filesize

    68KB

  • memory/5084-53-0x0000000007D50000-0x0000000007D5E000-memory.dmp

    Filesize

    56KB

  • memory/5084-54-0x0000000007D60000-0x0000000007D74000-memory.dmp

    Filesize

    80KB

  • memory/5084-55-0x0000000007E50000-0x0000000007E6A000-memory.dmp

    Filesize

    104KB

  • memory/5084-56-0x0000000007E30000-0x0000000007E38000-memory.dmp

    Filesize

    32KB

  • memory/5084-19-0x00000000058D0000-0x0000000005EF8000-memory.dmp

    Filesize

    6.2MB

  • memory/5084-18-0x0000000003210000-0x0000000003246000-memory.dmp

    Filesize

    216KB