Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/03/2023, 05:16

General

  • Target
    MandyPayLoad2023.3.13.js
  • Size 350KB
  • Sample230314-fx5mlade88
  • SHA256 8aab09c796974a78894eb7f4b542e921b590c9abc153279e644046867942d2f7
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • STRRAT

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

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

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

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 26 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\MandyPayLoad2023.3.13.js
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4280
    • C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe
      "C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\nonaigsv.txt"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4736
      • C:\Program Files\Java\jre1.8.0_66\bin\java.exe
        "C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\nonaigsv.txt"
        3⤵
        • Drops startup file
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:1292
        • C:\Windows\SYSTEM32\cmd.exe
          cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\nonaigsv.txt"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:456
          • C:\Windows\system32\schtasks.exe
            schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\nonaigsv.txt"
            5⤵
            • Creates scheduled task(s)
            PID:3588
        • C:\Program Files\Java\jre1.8.0_66\bin\java.exe
          "C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\nonaigsv.txt"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:3256
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2996
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1240
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4512
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:4376
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:208
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
              6⤵
                PID:2772
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:4628
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
                6⤵
                  PID:3684

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            90737d32e3aba4b.timestamp

            • Path C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
            • Size 50B
            • SHA256 eacec87860d52101ad0b36d211238a4a8c0588fbdcf2313d4ed033dd7edca76a
            • MD5 SHA1 SHA512

            90737d32e3aba4b.timestamp

            • Path C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
            • Size 50B
            • SHA256 5933c11826698c935f43257a36e70774f0d970e8111e8c1e25d26557eae7c31c
            • MD5 SHA1 SHA512

            jna6075646082443559230.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna6075646082443559230.dll
            • Size 241KB
            • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
            • MD5 SHA1 SHA512 SSDEEP

            83aa4cc77f591dfc2374580bbd95f6ba_7669410e-8e67-41c6-8402-7b5abeec199f

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2805025096-2326403612-4231045514-1000\83aa4cc77f591dfc2374580bbd95f6ba_7669410e-8e67-41c6-8402-7b5abeec199f
            • Size 45B
            • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
            • MD5 SHA1 SHA512

            nonaigsv.txt

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nonaigsv.txt
            • Size 164KB
            • SHA256 797db82ee459a5bcf044544ab15ea43866073ec5d631bacecaab364d8a9db2b0
            • MD5 SHA1 SHA512 SSDEEP

            jna-5.5.0.jar

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

            jna-platform-5.5.0.jar

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

            sqlite-jdbc-3.14.2.1.jar

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

            system-hook-3.5.jar

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

            nonaigsv.txt

            • Path C:\Users\Admin\AppData\Roaming\nonaigsv.txt
            • Size 164KB
            • SHA256 797db82ee459a5bcf044544ab15ea43866073ec5d631bacecaab364d8a9db2b0
            • MD5 SHA1 SHA512 SSDEEP

            nonaigsv.txt

            • Path C:\Users\Admin\AppData\Roaming\nonaigsv.txt
            • Size 164KB
            • SHA256 797db82ee459a5bcf044544ab15ea43866073ec5d631bacecaab364d8a9db2b0
            • MD5 SHA1 SHA512 SSDEEP

            jna-5.5.0.jar

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

            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

            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

            system-hook-3.5.jar

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

            nonaigsv.txt

            • Path C:\Users\Admin\nonaigsv.txt
            • Size 164KB
            • SHA256 797db82ee459a5bcf044544ab15ea43866073ec5d631bacecaab364d8a9db2b0
            • MD5 SHA1 SHA512 SSDEEP

            memory/1292-250-0x0000000001450000-0x0000000001451000-memory.dmp

            memory/3256-279-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

            memory/4736-195-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-231-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-230-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-228-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-221-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-217-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-215-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-214-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-206-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-194-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-183-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-182-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-174-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-173-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-161-0x00000000016E0000-0x00000000016E1000-memory.dmp

            memory/4736-145-0x00000000016E0000-0x00000000016E1000-memory.dmp