Analysis

  • max time kernel
    145s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 01:48

General

  • Target
    bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887.jar
  • Size 481KB
  • Sample240601-b75m5aec87
  • SHA256 bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • STRRAT

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

  • 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.

  • 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:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1824
    • 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:1284
    • C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887.jar"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:380
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4708
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887.jar"
          4⤵
          • Creates scheduled task(s)
          PID:1304
      • 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\bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887.jar"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:620
        • C:\Windows\SYSTEM32\cmd.exe
          cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3776
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2440
        • C:\Windows\SYSTEM32\cmd.exe
          cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2072
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1404
        • C:\Windows\SYSTEM32\cmd.exe
          cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1612
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:4320
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:3184
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:668

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            3903daac9bc4a3b7.timestamp

            • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
            • Size 46B
            • SHA256 885e47f41c992457113d8a49842e717c2fad6ca2aca8693b31e15988fa066abc
            • MD5 SHA1 SHA512

            3903daac9bc4a3b7.timestamp

            • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
            • Size 46B
            • SHA256 816eb02a716507ef590dca6023fd3714c34b4fb32102026bf7226565fc9ed9a0
            • MD5 SHA1 SHA512

            jna7710776402419684402.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna7710776402419684402.dll
            • Size 241KB
            • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
            • MD5 SHA1 SHA512 SSDEEP

            83aa4cc77f591dfc2374580bbd95f6ba_310807ab-751f-4d81-ae09-b202eaf21e19

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-4124900551-4068476067-3491212533-1000\83aa4cc77f591dfc2374580bbd95f6ba_310807ab-751f-4d81-ae09-b202eaf21e19
            • Size 45B
            • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
            • MD5 SHA1 SHA512

            bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887.jar

            • Path C:\Users\Admin\bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887.jar
            • Size 481KB
            • SHA256 bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887
            • 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/380-254-0x0000024AF04D0000-0x0000024AF04D1000-memory.dmp

            memory/620-377-0x0000026F79A50000-0x0000026F79A51000-memory.dmp

            memory/620-358-0x0000026F79A50000-0x0000026F79A51000-memory.dmp

            memory/1824-126-0x00000225A99E0000-0x00000225A99F0000-memory.dmp

            memory/1824-61-0x00000225A98B0000-0x00000225A98C0000-memory.dmp

            memory/1824-29-0x00000225A9900000-0x00000225A9910000-memory.dmp

            memory/1824-31-0x00000225A9910000-0x00000225A9920000-memory.dmp

            memory/1824-34-0x00000225A9920000-0x00000225A9930000-memory.dmp

            memory/1824-39-0x00000225A9930000-0x00000225A9940000-memory.dmp

            memory/1824-44-0x00000225A7D10000-0x00000225A7D11000-memory.dmp

            memory/1824-43-0x00000225A9970000-0x00000225A9980000-memory.dmp

            memory/1824-42-0x00000225A9960000-0x00000225A9970000-memory.dmp

            memory/1824-41-0x00000225A9950000-0x00000225A9960000-memory.dmp

            memory/1824-40-0x00000225A9940000-0x00000225A9950000-memory.dmp

            memory/1824-53-0x00000225A9990000-0x00000225A99A0000-memory.dmp

            memory/1824-52-0x00000225A9980000-0x00000225A9990000-memory.dmp

            memory/1824-51-0x00000225A9610000-0x00000225A9880000-memory.dmp

            memory/1824-58-0x00000225A99A0000-0x00000225A99B0000-memory.dmp

            memory/1824-57-0x00000225A9890000-0x00000225A98A0000-memory.dmp

            memory/1824-56-0x00000225A9880000-0x00000225A9890000-memory.dmp

            memory/1824-60-0x00000225A98A0000-0x00000225A98B0000-memory.dmp

            memory/1824-64-0x00000225A99C0000-0x00000225A99D0000-memory.dmp

            memory/1824-63-0x00000225A99B0000-0x00000225A99C0000-memory.dmp

            memory/1824-62-0x00000225A98C0000-0x00000225A98D0000-memory.dmp

            memory/1824-110-0x00000225A9A90000-0x00000225A9AA0000-memory.dmp

            memory/1824-72-0x00000225A99F0000-0x00000225A9A00000-memory.dmp

            memory/1824-71-0x00000225A99E0000-0x00000225A99F0000-memory.dmp

            memory/1824-75-0x00000225A98E0000-0x00000225A98F0000-memory.dmp

            memory/1824-107-0x00000225A9980000-0x00000225A9990000-memory.dmp

            memory/1824-77-0x00000225A9A10000-0x00000225A9A20000-memory.dmp

            memory/1824-76-0x00000225A9A00000-0x00000225A9A10000-memory.dmp

            memory/1824-69-0x00000225A99D0000-0x00000225A99E0000-memory.dmp

            memory/1824-68-0x00000225A98D0000-0x00000225A98E0000-memory.dmp

            memory/1824-82-0x00000225A98F0000-0x00000225A9900000-memory.dmp

            memory/1824-83-0x00000225A9A30000-0x00000225A9A40000-memory.dmp

            memory/1824-84-0x00000225A7D10000-0x00000225A7D11000-memory.dmp

            memory/1824-89-0x00000225A9A40000-0x00000225A9A50000-memory.dmp

            memory/1824-87-0x00000225A9900000-0x00000225A9910000-memory.dmp

            memory/1824-94-0x00000225A9A50000-0x00000225A9A60000-memory.dmp

            memory/1824-95-0x00000225A9A60000-0x00000225A9A70000-memory.dmp

            memory/1824-93-0x00000225A9910000-0x00000225A9920000-memory.dmp

            memory/1824-97-0x00000225A9A70000-0x00000225A9A80000-memory.dmp

            memory/1824-96-0x00000225A9920000-0x00000225A9930000-memory.dmp

            memory/1824-111-0x00000225A9AA0000-0x00000225A9AB0000-memory.dmp

            memory/1824-116-0x00000225A99C0000-0x00000225A99D0000-memory.dmp

            memory/1824-115-0x00000225A99B0000-0x00000225A99C0000-memory.dmp

            memory/1824-120-0x00000225A7D10000-0x00000225A7D11000-memory.dmp

            memory/1824-128-0x00000225A9AC0000-0x00000225A9AD0000-memory.dmp

            memory/1824-127-0x00000225A99F0000-0x00000225A9A00000-memory.dmp

            memory/1824-23-0x00000225A98C0000-0x00000225A98D0000-memory.dmp

            memory/1824-125-0x00000225A99D0000-0x00000225A99E0000-memory.dmp

            memory/1824-123-0x00000225A7D10000-0x00000225A7D11000-memory.dmp

            memory/1824-114-0x00000225A9AB0000-0x00000225A9AC0000-memory.dmp

            memory/1824-113-0x00000225A99A0000-0x00000225A99B0000-memory.dmp

            memory/1824-27-0x00000225A98F0000-0x00000225A9900000-memory.dmp

            memory/1824-78-0x00000225A9A20000-0x00000225A9A30000-memory.dmp

            memory/1824-112-0x00000225A7D10000-0x00000225A7D11000-memory.dmp

            memory/1824-109-0x00000225A9990000-0x00000225A99A0000-memory.dmp

            memory/1824-105-0x00000225A9A80000-0x00000225A9A90000-memory.dmp

            memory/1824-104-0x00000225A9970000-0x00000225A9980000-memory.dmp

            memory/1824-103-0x00000225A9960000-0x00000225A9970000-memory.dmp

            memory/1824-102-0x00000225A9950000-0x00000225A9960000-memory.dmp

            memory/1824-101-0x00000225A9940000-0x00000225A9950000-memory.dmp

            memory/1824-100-0x00000225A9930000-0x00000225A9940000-memory.dmp

            memory/1824-136-0x00000225A9AF0000-0x00000225A9B00000-memory.dmp

            memory/1824-135-0x00000225A9AE0000-0x00000225A9AF0000-memory.dmp

            memory/1824-134-0x00000225A9AD0000-0x00000225A9AE0000-memory.dmp

            memory/1824-133-0x00000225A9A20000-0x00000225A9A30000-memory.dmp

            memory/1824-132-0x00000225A9A10000-0x00000225A9A20000-memory.dmp

            memory/1824-131-0x00000225A9A00000-0x00000225A9A10000-memory.dmp

            memory/1824-138-0x00000225A9A30000-0x00000225A9A40000-memory.dmp

            memory/1824-139-0x00000225A9B00000-0x00000225A9B10000-memory.dmp

            memory/1824-142-0x00000225A9B10000-0x00000225A9B20000-memory.dmp

            memory/1824-141-0x00000225A9A40000-0x00000225A9A50000-memory.dmp

            memory/1824-145-0x00000225A9A60000-0x00000225A9A70000-memory.dmp

            memory/1824-146-0x00000225A9B20000-0x00000225A9B30000-memory.dmp

            memory/1824-144-0x00000225A9A50000-0x00000225A9A60000-memory.dmp

            memory/1824-149-0x00000225A9B30000-0x00000225A9B40000-memory.dmp

            memory/1824-148-0x00000225A9A70000-0x00000225A9A80000-memory.dmp

            memory/1824-152-0x00000225A9B40000-0x00000225A9B50000-memory.dmp

            memory/1824-151-0x00000225A9A80000-0x00000225A9A90000-memory.dmp

            memory/1824-154-0x00000225A7D10000-0x00000225A7D11000-memory.dmp

            memory/1824-159-0x00000225A9B50000-0x00000225A9B60000-memory.dmp

            memory/1824-158-0x00000225A9A90000-0x00000225A9AA0000-memory.dmp

            memory/1824-165-0x00000225A9AA0000-0x00000225A9AB0000-memory.dmp

            memory/1824-166-0x00000225A9B60000-0x00000225A9B70000-memory.dmp

            memory/1824-168-0x00000225A7D10000-0x00000225A7D11000-memory.dmp

            memory/1824-172-0x00000225A9AB0000-0x00000225A9AC0000-memory.dmp

            memory/1824-175-0x00000225A9AC0000-0x00000225A9AD0000-memory.dmp

            memory/1824-176-0x00000225A9B70000-0x00000225A9B80000-memory.dmp

            memory/1824-177-0x00000225A7D10000-0x00000225A7D11000-memory.dmp

            memory/1824-178-0x00000225A9610000-0x00000225A9880000-memory.dmp

            memory/1824-182-0x00000225A98B0000-0x00000225A98C0000-memory.dmp

            memory/1824-186-0x00000225A98F0000-0x00000225A9900000-memory.dmp

            memory/1824-185-0x00000225A98C0000-0x00000225A98D0000-memory.dmp

            memory/1824-184-0x00000225A98D0000-0x00000225A98E0000-memory.dmp

            memory/1824-183-0x00000225A98E0000-0x00000225A98F0000-memory.dmp

            memory/1824-25-0x00000225A98E0000-0x00000225A98F0000-memory.dmp

            memory/1824-24-0x00000225A98D0000-0x00000225A98E0000-memory.dmp

            memory/1824-18-0x00000225A98A0000-0x00000225A98B0000-memory.dmp

            memory/1824-19-0x00000225A98B0000-0x00000225A98C0000-memory.dmp

            memory/1824-14-0x00000225A9880000-0x00000225A9890000-memory.dmp

            memory/1824-15-0x00000225A9890000-0x00000225A98A0000-memory.dmp

            memory/1824-2-0x00000225A9610000-0x00000225A9880000-memory.dmp

            memory/1824-181-0x00000225A98A0000-0x00000225A98B0000-memory.dmp

            memory/1824-180-0x00000225A9890000-0x00000225A98A0000-memory.dmp

            memory/1824-179-0x00000225A9880000-0x00000225A9890000-memory.dmp