Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 03:26

General

  • Target
    OR20240905662201.jar
  • Size 220KB
  • Sample240510-dy66psbd45
  • SHA256 35b886495f645a7fb28181fbc8a65ee4e991992ece58ceddc40e3d476ea80bef
  • 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
  • Modifies file permissions 1 TTPs 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.

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

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

  • 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 30 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:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\OR20240905662201.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2056
    • C:\Windows\system32\icacls.exe
      C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
      2⤵
      • Modifies file permissions
      PID:1156
    • C:\Windows\SYSTEM32\wscript.exe
      wscript C:\Users\Admin\dfkmkzprnq.js
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:316
      • 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\sqirlkzeh.txt"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3008
        • C:\Program Files\Java\jre-1.8\bin\java.exe
          "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\sqirlkzeh.txt"
          4⤵
          • Drops startup file
          • Adds Run key to start application
          • Suspicious use of WriteProcessMemory
          PID:3560
          • C:\Windows\SYSTEM32\cmd.exe
            cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\sqirlkzeh.txt"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:688
            • C:\Windows\system32\schtasks.exe
              schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\sqirlkzeh.txt"
              6⤵
              • Creates scheduled task(s)
              PID:4756
          • 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\sqirlkzeh.txt"
            5⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:2680
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4660
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
                7⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:4344
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4180
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
                7⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:3492
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:3144
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
                7⤵
                  PID:1180
              • C:\Windows\SYSTEM32\cmd.exe
                cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:1928
                • C:\Windows\System32\Wbem\WMIC.exe
                  wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
                  7⤵
                    PID:1156

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            3903daac9bc4a3b7.timestamp

            • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
            • Size 46B
            • SHA256 27fcdd91ffd1693bdb2b938b3a334e2ee42609fa70f4d57dffd931e2a898bd3c
            • MD5 SHA1 SHA512

            3903daac9bc4a3b7.timestamp

            • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
            • Size 46B
            • SHA256 f44974a6b614f808dc046fba6043aded699f320504a1949d01d17e1057521464
            • MD5 SHA1 SHA512

            jna7311669338782230255.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna7311669338782230255.dll
            • Size 241KB
            • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
            • MD5 SHA1 SHA512 SSDEEP

            83aa4cc77f591dfc2374580bbd95f6ba_6833eb7b-8d4b-4cdd-9502-9bbf7fc1cf9f

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1337824034-2731376981-3755436523-1000\83aa4cc77f591dfc2374580bbd95f6ba_6833eb7b-8d4b-4cdd-9502-9bbf7fc1cf9f
            • Size 45B
            • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
            • MD5 SHA1 SHA512

            sqirlkzeh.txt

            • Path C:\Users\Admin\AppData\Roaming\sqirlkzeh.txt
            • Size 164KB
            • SHA256 19a1796f53aed8daf769cb5adc2fdec81bd3cd7b6f5a3a746bd41c97e1eea44c
            • MD5 SHA1 SHA512 SSDEEP

            dfkmkzprnq.js

            • Path C:\Users\Admin\dfkmkzprnq.js
            • Size 348KB
            • SHA256 3afab937df5ae7b725f2db7615bf5b326e80f4c5cf072e470160f48efefb45fb
            • 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

            memory/2056-2-0x000002530DDB0000-0x000002530E020000-memory.dmp

            memory/2056-15-0x000002530DDB0000-0x000002530E020000-memory.dmp

            memory/2056-14-0x000002530C3F0000-0x000002530C3F1000-memory.dmp

            memory/2680-164-0x000002DD316C0000-0x000002DD316C1000-memory.dmp

            memory/3008-21-0x0000023680000000-0x0000023680270000-memory.dmp

            memory/3008-101-0x0000023680000000-0x0000023680270000-memory.dmp

            memory/3008-100-0x00000236F6D90000-0x00000236F6D91000-memory.dmp

            memory/3008-96-0x00000236F6D90000-0x00000236F6D91000-memory.dmp

            memory/3008-83-0x00000236F6D90000-0x00000236F6D91000-memory.dmp

            memory/3008-77-0x00000236F6D90000-0x00000236F6D91000-memory.dmp

            memory/3008-73-0x00000236F6D90000-0x00000236F6D91000-memory.dmp

            memory/3008-57-0x00000236F6D90000-0x00000236F6D91000-memory.dmp

            memory/3008-44-0x00000236F6D90000-0x00000236F6D91000-memory.dmp

            memory/3560-137-0x00000203E9BB0000-0x00000203E9BB1000-memory.dmp