Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230621-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/06/2023, 01:57

General

  • Target
    4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar
  • Size 218KB
  • Sample230629-cdpv9acf4t
  • SHA256 4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec
  • 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
  • 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 24 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:\ProgramData\Oracle\Java\javapath\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2972
    • 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\4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2500
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1784
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar"
          4⤵
          • Creates scheduled task(s)
          PID:4052
      • 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\4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1608
        • 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:2212
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2896
        • 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:4312
          • 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:4540
        • 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:564
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:4880
          • 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:4400
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:2692

      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 260515b3cd77e6fdeb1b4c1bb1233b24130a23f4d01c6e254e97c946c43b297d
            • MD5 SHA1 SHA512

            90737d32e3aba4b.timestamp

            • Path C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
            • Size 50B
            • SHA256 ba344b499bdacdb44ded02b5b877dee1a891ec97c3a1654fb12e471d21c5da45
            • MD5 SHA1 SHA512

            4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar

            • Path C:\Users\Admin\4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar
            • Size 218KB
            • SHA256 4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec
            • MD5 SHA1 SHA512 SSDEEP

            jna9022108103044145801.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna9022108103044145801.dll
            • Size 241KB
            • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
            • MD5 SHA1 SHA512 SSDEEP

            4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar

            • Path C:\Users\Admin\AppData\Roaming\4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar
            • Size 218KB
            • SHA256 4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec
            • MD5 SHA1 SHA512 SSDEEP

            4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar

            • Path C:\Users\Admin\AppData\Roaming\4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec.jar
            • Size 218KB
            • SHA256 4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec
            • MD5 SHA1 SHA512 SSDEEP

            83aa4cc77f591dfc2374580bbd95f6ba_18e45b86-45c8-4e56-b846-cf6e0f375be5

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2177513644-1903222820-241662473-1000\83aa4cc77f591dfc2374580bbd95f6ba_18e45b86-45c8-4e56-b846-cf6e0f375be5
            • Size 45B
            • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
            • MD5 SHA1 SHA512

            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

            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/1608-250-0x00000000014A0000-0x00000000014A1000-memory.dmp

            memory/1608-269-0x00000000014A0000-0x00000000014A1000-memory.dmp

            memory/1608-272-0x00000000014A0000-0x00000000014A1000-memory.dmp

            memory/2500-224-0x0000000002B30000-0x0000000002B31000-memory.dmp

            memory/2972-143-0x0000000000C70000-0x0000000000C71000-memory.dmp

            memory/2972-201-0x0000000000C70000-0x0000000000C71000-memory.dmp

            memory/2972-198-0x0000000000C70000-0x0000000000C71000-memory.dmp

            memory/2972-185-0x0000000000C70000-0x0000000000C71000-memory.dmp

            memory/2972-183-0x0000000000C70000-0x0000000000C71000-memory.dmp

            memory/2972-178-0x0000000000C70000-0x0000000000C71000-memory.dmp

            memory/2972-152-0x0000000000C70000-0x0000000000C71000-memory.dmp