Analysis

  • max time kernel
    146s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/06/2023, 02:11

General

  • Target
    Enquiry W0280 - 16-062023.jar
  • Size 218KB
  • Sample230616-cl9wdscd72
  • SHA256 30a3607264bb160ac50c9c6eadb049dd83f9df01cefa99821b75f1d45b1bf49b
  • 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\Enquiry W0280 - 16-062023.jar"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4380
    • 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\Enquiry W0280 - 16-062023.jar"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:3144
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Enquiry W0280 - 16-062023.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3120
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Enquiry W0280 - 16-062023.jar"
          4⤵
          • Creates scheduled task(s)
          PID:812
      • 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\Enquiry W0280 - 16-062023.jar"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:4108
        • 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:756
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1108
        • 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:2360
          • 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:948
        • 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:4584
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:2152
          • 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:5080
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:1868

      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 c28a6d0d5ab59b4979ddd149068aa1e8e169bcbaf94166ebfca9f36e795fefc6
            • MD5 SHA1 SHA512

            90737d32e3aba4b.timestamp

            • Path C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
            • Size 50B
            • SHA256 97d29c3658826f761a42a3ebdc6c1463f20994a6d41125801f76809e4c22f437
            • MD5 SHA1 SHA512

            jna8460102796008965474.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna8460102796008965474.dll
            • Size 241KB
            • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
            • MD5 SHA1 SHA512 SSDEEP

            Enquiry W0280 - 16-062023.jar

            • Path C:\Users\Admin\AppData\Roaming\Enquiry W0280 - 16-062023.jar
            • Size 218KB
            • SHA256 30a3607264bb160ac50c9c6eadb049dd83f9df01cefa99821b75f1d45b1bf49b
            • MD5 SHA1 SHA512 SSDEEP

            Enquiry W0280 - 16-062023.jar

            • Path C:\Users\Admin\AppData\Roaming\Enquiry W0280 - 16-062023.jar
            • Size 218KB
            • SHA256 30a3607264bb160ac50c9c6eadb049dd83f9df01cefa99821b75f1d45b1bf49b
            • 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

            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

            Enquiry W0280 - 16-062023.jar

            • Path C:\Users\Admin\Enquiry W0280 - 16-062023.jar
            • Size 218KB
            • SHA256 30a3607264bb160ac50c9c6eadb049dd83f9df01cefa99821b75f1d45b1bf49b
            • 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/3144-235-0x0000000000BE0000-0x0000000000BE1000-memory.dmp

            memory/3144-236-0x0000000000BE0000-0x0000000000BE1000-memory.dmp

            memory/4108-282-0x00000000024B0000-0x00000000024B1000-memory.dmp

            memory/4108-263-0x00000000024B0000-0x00000000024B1000-memory.dmp

            memory/4380-204-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-207-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-205-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-218-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-203-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-194-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-187-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-183-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-174-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-143-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-172-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-158-0x0000000000B70000-0x0000000000B71000-memory.dmp

            memory/4380-209-0x0000000000B70000-0x0000000000B71000-memory.dmp