Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/10/2026, 09:01

General

  • Target
    PROOF OF PAYMENT.js
  • Size 829KB
  • Sample261005-ky52zaydkc
  • SHA256 2c08726d40a1bd521d37c4d6b4a8ff0e423249b374a7aea15dca32600b82bf8f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • strrat

C2
  • jareyo.duckdns.org:5610

Attributes
  • license_id

    khonsari

  • plugins_url

    http://jbfrost.live/strigoi/server/?hwid=1&lid=m&ht=5

  • scheduled_task

    true

  • secondary_startup

    true

  • startup

    true

Signatures

  • Family: STRRAT

    STRRAT is a remote access tool than can steal credentials and log keystrokes.

  • Creates a file in the Startup directory 1 TTPs 1 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 1 TTPs 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 5 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 8 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Opens file in notepad (likely ransom note) 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 13 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\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\PROOF OF PAYMENT.js"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4440
    • C:\Program Files\Java\jre-1.8\bin\javaw.exe
      "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\rryjbdkx.txt"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5676
      • C:\Program Files\Java\jre-1.8\bin\java.exe
        "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\rryjbdkx.txt"
        3⤵
        • Creates a file in the Startup directory
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:2776
        • C:\Windows\SYSTEM32\cmd.exe
          cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\rryjbdkx.txt"
          4⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:4828
          • C:\Windows\system32\schtasks.exe
            schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\rryjbdkx.txt"
            5⤵
            • Scheduled Task/Job: Scheduled Task
            PID:2352
        • C:\Program Files\Java\jre-1.8\bin\java.exe
          "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\rryjbdkx.txt"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:3188
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
            5⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:3184
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
              6⤵
              • Reads the TCP/IP host and domain name from the registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4288
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
            5⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:5072
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
              6⤵
              • Reads the TCP/IP host and domain name from the registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4124
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
            5⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:4452
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
              6⤵
              • Reads the TCP/IP host and domain name from the registry
              • Suspicious behavior: EnumeratesProcesses
              PID:4128
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
            5⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:2276
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              6⤵
              • Reads the TCP/IP host and domain name from the registry
              • Suspicious behavior: EnumeratesProcesses
              PID:5316
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\rryjbdkx.txt
    1⤵
    • Opens file in notepad (likely ransom note)
    PID:4472
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\rryjbdkx.txt
    1⤵
    • Opens file in notepad (likely ransom note)
    PID:3912

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        3903daac9bc4a3b7.timestamp

        • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
        • Size 46B
        • SHA256 f0743ad2d6d8c12a5ad4eeed27118e82f6046ef3b25cf006fd0a714a1f393777
        • MD5 SHA1 SHA512

        3903daac9bc4a3b7.timestamp

        • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
        • Size 46B
        • SHA256 4a9a70e143916210bb19c8955ef0f8256ea3de290d23940acd3aacb67e5583b8
        • MD5 SHA1 SHA512

        jna765825192577012146.dll

        • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna765825192577012146.dll
        • Size 241KB
        • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        83aa4cc77f591dfc2374580bbd95f6ba_a138fda6-9c2c-4447-951e-b6e8ae1ea94a

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1404337215-1550464601-2805570857-1000\83aa4cc77f591dfc2374580bbd95f6ba_a138fda6-9c2c-4447-951e-b6e8ae1ea94a
        • Size 45B
        • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
        • MD5 SHA1 SHA512

        rryjbdkx.txt

        • Path C:\Users\Admin\AppData\Roaming\rryjbdkx.txt
        • Size 92KB
        • SHA256 a34962fb233e76dad091b5d818ab7ec4fb9b6eb401d92051abc1e2b0eff5f7a4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        jna-5.5.0.jar

        • Path C:\Users\Admin\lib\jna-5.5.0.jar
        • Size 1.4MB
        • SHA256 b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        jna-platform-5.5.0.jar

        • Path C:\Users\Admin\lib\jna-platform-5.5.0.jar
        • Size 2.6MB
        • SHA256 24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        sqlite-jdbc-3.14.2.1.jar

        • Path C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
        • Size 4.1MB
        • SHA256 2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
        • MD5 SHA1 SHA512 SSDEEP TLSH

        system-hook-3.5.jar

        • Path C:\Users\Admin\lib\system-hook-3.5.jar
        • Size 772KB
        • SHA256 2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2776-246-0x000001A76E2B0000-0x000001A76E2B1000-memory.dmp

        memory/2776-211-0x000001A76E2B0000-0x000001A76E2B1000-memory.dmp

        memory/3188-263-0x0000018E342D0000-0x0000018E342D1000-memory.dmp

        memory/3188-294-0x0000018E342D0000-0x0000018E342D1000-memory.dmp

        memory/4440-5-0x00007FFC50E50000-0x00007FFC51888000-memory.dmp

        memory/4440-3-0x00007FFC50E50000-0x00007FFC51888000-memory.dmp

        memory/4440-1-0x00007FFC50E50000-0x00007FFC51888000-memory.dmp

        memory/4440-0-0x00007FFC5114A000-0x00007FFC5114B000-memory.dmp

        memory/5676-105-0x000002219C110000-0x000002219C120000-memory.dmp

        memory/5676-129-0x000002219C0C0000-0x000002219C0D0000-memory.dmp

        memory/5676-41-0x000002219BFD0000-0x000002219BFE0000-memory.dmp

        memory/5676-40-0x000002219BCE0000-0x000002219BF50000-memory.dmp

        memory/5676-43-0x000002219BFE0000-0x000002219BFF0000-memory.dmp

        memory/5676-46-0x000002219BFF0000-0x000002219C000000-memory.dmp

        memory/5676-45-0x000002219BF50000-0x000002219BF60000-memory.dmp

        memory/5676-48-0x000002219A310000-0x000002219A311000-memory.dmp

        memory/5676-50-0x000002219C000000-0x000002219C010000-memory.dmp

        memory/5676-49-0x000002219BF60000-0x000002219BF70000-memory.dmp

        memory/5676-52-0x000002219BF70000-0x000002219BF80000-memory.dmp

        memory/5676-53-0x000002219C010000-0x000002219C020000-memory.dmp

        memory/5676-56-0x000002219C020000-0x000002219C030000-memory.dmp

        memory/5676-55-0x000002219BF80000-0x000002219BF90000-memory.dmp

        memory/5676-59-0x000002219C030000-0x000002219C040000-memory.dmp

        memory/5676-58-0x000002219BF90000-0x000002219BFA0000-memory.dmp

        memory/5676-63-0x000002219C040000-0x000002219C050000-memory.dmp

        memory/5676-64-0x000002219BFB0000-0x000002219BFC0000-memory.dmp

        memory/5676-65-0x000002219C050000-0x000002219C060000-memory.dmp

        memory/5676-62-0x000002219BFA0000-0x000002219BFB0000-memory.dmp

        memory/5676-68-0x000002219C060000-0x000002219C070000-memory.dmp

        memory/5676-67-0x000002219BFC0000-0x000002219BFD0000-memory.dmp

        memory/5676-70-0x000002219BFD0000-0x000002219BFE0000-memory.dmp

        memory/5676-71-0x000002219C070000-0x000002219C080000-memory.dmp

        memory/5676-75-0x000002219BFE0000-0x000002219BFF0000-memory.dmp

        memory/5676-76-0x000002219C080000-0x000002219C090000-memory.dmp

        memory/5676-80-0x000002219BFF0000-0x000002219C000000-memory.dmp

        memory/5676-81-0x000002219C090000-0x000002219C0A0000-memory.dmp

        memory/5676-88-0x000002219C0B0000-0x000002219C0C0000-memory.dmp

        memory/5676-90-0x000002219C010000-0x000002219C020000-memory.dmp

        memory/5676-89-0x000002219C0C0000-0x000002219C0D0000-memory.dmp

        memory/5676-87-0x000002219C0A0000-0x000002219C0B0000-memory.dmp

        memory/5676-86-0x000002219C000000-0x000002219C010000-memory.dmp

        memory/5676-96-0x000002219C0E0000-0x000002219C0F0000-memory.dmp

        memory/5676-99-0x000002219C040000-0x000002219C050000-memory.dmp

        memory/5676-102-0x000002219C100000-0x000002219C110000-memory.dmp

        memory/5676-98-0x000002219C030000-0x000002219C040000-memory.dmp

        memory/5676-95-0x000002219C0D0000-0x000002219C0E0000-memory.dmp

        memory/5676-94-0x000002219C020000-0x000002219C030000-memory.dmp

        memory/5676-97-0x000002219C0F0000-0x000002219C100000-memory.dmp

        memory/5676-104-0x000002219C050000-0x000002219C060000-memory.dmp

        memory/5676-32-0x000002219BFB0000-0x000002219BFC0000-memory.dmp

        memory/5676-110-0x000002219A310000-0x000002219A311000-memory.dmp

        memory/5676-112-0x000002219C060000-0x000002219C070000-memory.dmp

        memory/5676-113-0x000002219C120000-0x000002219C130000-memory.dmp

        memory/5676-116-0x000002219C130000-0x000002219C140000-memory.dmp

        memory/5676-115-0x000002219C070000-0x000002219C080000-memory.dmp

        memory/5676-119-0x000002219C140000-0x000002219C150000-memory.dmp

        memory/5676-118-0x000002219C080000-0x000002219C090000-memory.dmp

        memory/5676-34-0x000002219BFC0000-0x000002219BFD0000-memory.dmp

        memory/5676-128-0x000002219C0B0000-0x000002219C0C0000-memory.dmp

        memory/5676-127-0x000002219C0A0000-0x000002219C0B0000-memory.dmp

        memory/5676-136-0x000002219C0F0000-0x000002219C100000-memory.dmp

        memory/5676-135-0x000002219C0E0000-0x000002219C0F0000-memory.dmp

        memory/5676-134-0x000002219C0D0000-0x000002219C0E0000-memory.dmp

        memory/5676-133-0x000002219C190000-0x000002219C1A0000-memory.dmp

        memory/5676-137-0x000002219A310000-0x000002219A311000-memory.dmp

        memory/5676-132-0x000002219C180000-0x000002219C190000-memory.dmp

        memory/5676-126-0x000002219C170000-0x000002219C180000-memory.dmp

        memory/5676-125-0x000002219C160000-0x000002219C170000-memory.dmp

        memory/5676-124-0x000002219C150000-0x000002219C160000-memory.dmp

        memory/5676-123-0x000002219C090000-0x000002219C0A0000-memory.dmp

        memory/5676-143-0x000002219C1A0000-0x000002219C1B0000-memory.dmp

        memory/5676-145-0x000002219A310000-0x000002219A311000-memory.dmp

        memory/5676-155-0x000002219C100000-0x000002219C110000-memory.dmp

        memory/5676-156-0x000002219A310000-0x000002219A311000-memory.dmp

        memory/5676-157-0x000002219C110000-0x000002219C120000-memory.dmp

        memory/5676-160-0x000002219A310000-0x000002219A311000-memory.dmp

        memory/5676-172-0x000002219C000000-0x000002219C010000-memory.dmp

        memory/5676-174-0x000002219C030000-0x000002219C040000-memory.dmp

        memory/5676-183-0x000002219C0D0000-0x000002219C0E0000-memory.dmp

        memory/5676-184-0x000002219C0E0000-0x000002219C0F0000-memory.dmp

        memory/5676-182-0x000002219C0C0000-0x000002219C0D0000-memory.dmp

        memory/5676-181-0x000002219C0B0000-0x000002219C0C0000-memory.dmp

        memory/5676-180-0x000002219C0A0000-0x000002219C0B0000-memory.dmp

        memory/5676-179-0x000002219C090000-0x000002219C0A0000-memory.dmp

        memory/5676-177-0x000002219C070000-0x000002219C080000-memory.dmp

        memory/5676-176-0x000002219C060000-0x000002219C070000-memory.dmp

        memory/5676-175-0x000002219C040000-0x000002219C050000-memory.dmp

        memory/5676-173-0x000002219C010000-0x000002219C020000-memory.dmp

        memory/5676-171-0x000002219BFF0000-0x000002219C000000-memory.dmp

        memory/5676-170-0x000002219BFE0000-0x000002219BFF0000-memory.dmp

        memory/5676-169-0x000002219BFD0000-0x000002219BFE0000-memory.dmp

        memory/5676-168-0x000002219BFC0000-0x000002219BFD0000-memory.dmp

        memory/5676-167-0x000002219BFB0000-0x000002219BFC0000-memory.dmp

        memory/5676-166-0x000002219BFA0000-0x000002219BFB0000-memory.dmp

        memory/5676-165-0x000002219BF90000-0x000002219BFA0000-memory.dmp

        memory/5676-30-0x000002219BFA0000-0x000002219BFB0000-memory.dmp

        memory/5676-28-0x000002219BF90000-0x000002219BFA0000-memory.dmp

        memory/5676-26-0x000002219BF80000-0x000002219BF90000-memory.dmp

        memory/5676-25-0x000002219BF70000-0x000002219BF80000-memory.dmp

        memory/5676-22-0x000002219BF60000-0x000002219BF70000-memory.dmp

        memory/5676-20-0x000002219BF50000-0x000002219BF60000-memory.dmp

        memory/5676-17-0x000002219A310000-0x000002219A311000-memory.dmp

        memory/5676-16-0x000002219BCE0000-0x000002219BF50000-memory.dmp

        memory/5676-164-0x000002219BF80000-0x000002219BF90000-memory.dmp

        memory/5676-163-0x000002219BF70000-0x000002219BF80000-memory.dmp

        memory/5676-162-0x000002219BF60000-0x000002219BF70000-memory.dmp

        memory/5676-161-0x000002219BCE0000-0x000002219BF50000-memory.dmp