Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/06/2024, 15:21

General

  • Target
    87bfc0255d14849743cefe83b8324fc1eb59259be6826cd0d57497e1d7bee178.jar
  • Size 453KB
  • Sample240604-srd9nsbh98
  • SHA256 87bfc0255d14849743cefe83b8324fc1eb59259be6826cd0d57497e1d7bee178
  • 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\87bfc0255d14849743cefe83b8324fc1eb59259be6826cd0d57497e1d7bee178.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1616
    • 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:2380
    • C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\87bfc0255d14849743cefe83b8324fc1eb59259be6826cd0d57497e1d7bee178.jar"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:4804
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\87bfc0255d14849743cefe83b8324fc1eb59259be6826cd0d57497e1d7bee178.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1236
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\87bfc0255d14849743cefe83b8324fc1eb59259be6826cd0d57497e1d7bee178.jar"
          4⤵
          • Creates scheduled task(s)
          PID:1160
      • 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\87bfc0255d14849743cefe83b8324fc1eb59259be6826cd0d57497e1d7bee178.jar"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:444
        • 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:4796
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3232
        • 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:3552
          • 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:1656
        • 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:4416
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:4736
          • 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:3396
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:2200

      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 3a53e2addbd0664e24ebb7209c7b6a0cce103ebf97266596bfad20ebf27e5378
            • MD5 SHA1 SHA512

            3903daac9bc4a3b7.timestamp

            • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
            • Size 46B
            • SHA256 d4e2101c75bc2e78645718fc27fa784841068cac6e43c3ecfb367aba3f9bc0b3
            • MD5 SHA1 SHA512

            87bfc0255d14849743cefe83b8324fc1eb59259be6826cd0d57497e1d7bee178.jar

            • Path C:\Users\Admin\87bfc0255d14849743cefe83b8324fc1eb59259be6826cd0d57497e1d7bee178.jar
            • Size 453KB
            • SHA256 87bfc0255d14849743cefe83b8324fc1eb59259be6826cd0d57497e1d7bee178
            • MD5 SHA1 SHA512 SSDEEP

            jna848786241556711149.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna848786241556711149.dll
            • Size 241KB
            • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
            • MD5 SHA1 SHA512 SSDEEP

            83aa4cc77f591dfc2374580bbd95f6ba_4d0966de-9ba4-4ee9-b282-eaf9cf9c9160

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-4018855536-2201274732-320770143-1000\83aa4cc77f591dfc2374580bbd95f6ba_4d0966de-9ba4-4ee9-b282-eaf9cf9c9160
            • Size 45B
            • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
            • MD5 SHA1 SHA512

            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/444-393-0x000001F699BB0000-0x000001F699BB1000-memory.dmp

            memory/444-391-0x000001F699BB0000-0x000001F699BB1000-memory.dmp

            memory/444-373-0x000001F699BB0000-0x000001F699BB1000-memory.dmp

            memory/1616-113-0x0000022EAD670000-0x0000022EAD680000-memory.dmp

            memory/1616-61-0x0000022EAD490000-0x0000022EAD4A0000-memory.dmp

            memory/1616-30-0x0000022EAD4D0000-0x0000022EAD4E0000-memory.dmp

            memory/1616-29-0x0000022EAD4C0000-0x0000022EAD4D0000-memory.dmp

            memory/1616-34-0x0000022EAD4F0000-0x0000022EAD500000-memory.dmp

            memory/1616-37-0x0000022EAD510000-0x0000022EAD520000-memory.dmp

            memory/1616-36-0x0000022EAD500000-0x0000022EAD510000-memory.dmp

            memory/1616-45-0x0000022EAD540000-0x0000022EAD550000-memory.dmp

            memory/1616-46-0x0000022EAB900000-0x0000022EAB901000-memory.dmp

            memory/1616-48-0x0000022EAD550000-0x0000022EAD560000-memory.dmp

            memory/1616-47-0x0000022EAD450000-0x0000022EAD460000-memory.dmp

            memory/1616-44-0x0000022EAD530000-0x0000022EAD540000-memory.dmp

            memory/1616-43-0x0000022EAD520000-0x0000022EAD530000-memory.dmp

            memory/1616-42-0x0000022EAD1E0000-0x0000022EAD450000-memory.dmp

            memory/1616-55-0x0000022EAD470000-0x0000022EAD480000-memory.dmp

            memory/1616-56-0x0000022EAD560000-0x0000022EAD570000-memory.dmp

            memory/1616-54-0x0000022EAD460000-0x0000022EAD470000-memory.dmp

            memory/1616-58-0x0000022EAD480000-0x0000022EAD490000-memory.dmp

            memory/1616-59-0x0000022EAD570000-0x0000022EAD580000-memory.dmp

            memory/1616-63-0x0000022EAD580000-0x0000022EAD590000-memory.dmp

            memory/1616-62-0x0000022EAD4A0000-0x0000022EAD4B0000-memory.dmp

            memory/1616-102-0x0000022EAD630000-0x0000022EAD640000-memory.dmp

            memory/1616-66-0x0000022EAD590000-0x0000022EAD5A0000-memory.dmp

            memory/1616-67-0x0000022EAD5A0000-0x0000022EAD5B0000-memory.dmp

            memory/1616-71-0x0000022EAD5B0000-0x0000022EAD5C0000-memory.dmp

            memory/1616-101-0x0000022EAD620000-0x0000022EAD630000-memory.dmp

            memory/1616-77-0x0000022EAD5D0000-0x0000022EAD5E0000-memory.dmp

            memory/1616-76-0x0000022EAD5C0000-0x0000022EAD5D0000-memory.dmp

            memory/1616-75-0x0000022EAD4E0000-0x0000022EAD4F0000-memory.dmp

            memory/1616-74-0x0000022EAD4D0000-0x0000022EAD4E0000-memory.dmp

            memory/1616-73-0x0000022EAD4C0000-0x0000022EAD4D0000-memory.dmp

            memory/1616-79-0x0000022EAD4F0000-0x0000022EAD500000-memory.dmp

            memory/1616-80-0x0000022EAD5E0000-0x0000022EAD5F0000-memory.dmp

            memory/1616-86-0x0000022EAD5F0000-0x0000022EAD600000-memory.dmp

            memory/1616-85-0x0000022EAD510000-0x0000022EAD520000-memory.dmp

            memory/1616-84-0x0000022EAD500000-0x0000022EAD510000-memory.dmp

            memory/1616-88-0x0000022EAB900000-0x0000022EAB901000-memory.dmp

            memory/1616-89-0x0000022EAD520000-0x0000022EAD530000-memory.dmp

            memory/1616-92-0x0000022EAD600000-0x0000022EAD610000-memory.dmp

            memory/1616-91-0x0000022EAD540000-0x0000022EAD550000-memory.dmp

            memory/1616-109-0x0000022EAD570000-0x0000022EAD580000-memory.dmp

            memory/1616-97-0x0000022EAD610000-0x0000022EAD620000-memory.dmp

            memory/1616-96-0x0000022EAD550000-0x0000022EAD560000-memory.dmp

            memory/1616-100-0x0000022EAD560000-0x0000022EAD570000-memory.dmp

            memory/1616-115-0x0000022EAD690000-0x0000022EAD6A0000-memory.dmp

            memory/1616-114-0x0000022EAD680000-0x0000022EAD690000-memory.dmp

            memory/1616-24-0x0000022EAD4A0000-0x0000022EAD4B0000-memory.dmp

            memory/1616-112-0x0000022EAD660000-0x0000022EAD670000-memory.dmp

            memory/1616-111-0x0000022EAD650000-0x0000022EAD660000-memory.dmp

            memory/1616-110-0x0000022EAD640000-0x0000022EAD650000-memory.dmp

            memory/1616-90-0x0000022EAD530000-0x0000022EAD540000-memory.dmp

            memory/1616-31-0x0000022EAD4E0000-0x0000022EAD4F0000-memory.dmp

            memory/1616-69-0x0000022EAD4B0000-0x0000022EAD4C0000-memory.dmp

            memory/1616-119-0x0000022EAB900000-0x0000022EAB901000-memory.dmp

            memory/1616-122-0x0000022EAB900000-0x0000022EAB901000-memory.dmp

            memory/1616-126-0x0000022EAD6B0000-0x0000022EAD6C0000-memory.dmp

            memory/1616-125-0x0000022EAD6A0000-0x0000022EAD6B0000-memory.dmp

            memory/1616-124-0x0000022EAD580000-0x0000022EAD590000-memory.dmp

            memory/1616-128-0x0000022EAD590000-0x0000022EAD5A0000-memory.dmp

            memory/1616-130-0x0000022EAD6C0000-0x0000022EAD6D0000-memory.dmp

            memory/1616-129-0x0000022EAD5A0000-0x0000022EAD5B0000-memory.dmp

            memory/1616-132-0x0000022EAD5B0000-0x0000022EAD5C0000-memory.dmp

            memory/1616-133-0x0000022EAD6D0000-0x0000022EAD6E0000-memory.dmp

            memory/1616-137-0x0000022EAD6E0000-0x0000022EAD6F0000-memory.dmp

            memory/1616-136-0x0000022EAD5D0000-0x0000022EAD5E0000-memory.dmp

            memory/1616-135-0x0000022EAD5C0000-0x0000022EAD5D0000-memory.dmp

            memory/1616-140-0x0000022EAD6F0000-0x0000022EAD700000-memory.dmp

            memory/1616-139-0x0000022EAD5E0000-0x0000022EAD5F0000-memory.dmp

            memory/1616-143-0x0000022EAD5F0000-0x0000022EAD600000-memory.dmp

            memory/1616-144-0x0000022EAD700000-0x0000022EAD710000-memory.dmp

            memory/1616-145-0x0000022EAB900000-0x0000022EAB901000-memory.dmp

            memory/1616-147-0x0000022EAD600000-0x0000022EAD610000-memory.dmp

            memory/1616-148-0x0000022EAD710000-0x0000022EAD720000-memory.dmp

            memory/1616-150-0x0000022EAD610000-0x0000022EAD620000-memory.dmp

            memory/1616-151-0x0000022EAD720000-0x0000022EAD730000-memory.dmp

            memory/1616-155-0x0000022EAD730000-0x0000022EAD740000-memory.dmp

            memory/1616-154-0x0000022EAD630000-0x0000022EAD640000-memory.dmp

            memory/1616-153-0x0000022EAD620000-0x0000022EAD630000-memory.dmp

            memory/1616-159-0x0000022EAB900000-0x0000022EAB901000-memory.dmp

            memory/1616-165-0x0000022EAD640000-0x0000022EAD650000-memory.dmp

            memory/1616-171-0x0000022EAD740000-0x0000022EAD750000-memory.dmp

            memory/1616-170-0x0000022EAD690000-0x0000022EAD6A0000-memory.dmp

            memory/1616-169-0x0000022EAD680000-0x0000022EAD690000-memory.dmp

            memory/1616-168-0x0000022EAD670000-0x0000022EAD680000-memory.dmp

            memory/1616-167-0x0000022EAD660000-0x0000022EAD670000-memory.dmp

            memory/1616-166-0x0000022EAD650000-0x0000022EAD660000-memory.dmp

            memory/1616-172-0x0000022EAB900000-0x0000022EAB901000-memory.dmp

            memory/1616-175-0x0000022EAD6A0000-0x0000022EAD6B0000-memory.dmp

            memory/1616-176-0x0000022EAD6B0000-0x0000022EAD6C0000-memory.dmp

            memory/1616-179-0x0000022EAD6C0000-0x0000022EAD6D0000-memory.dmp

            memory/1616-189-0x0000022EAD460000-0x0000022EAD470000-memory.dmp

            memory/1616-192-0x0000022EAD490000-0x0000022EAD4A0000-memory.dmp

            memory/1616-191-0x0000022EAD480000-0x0000022EAD490000-memory.dmp

            memory/1616-25-0x0000022EAD4B0000-0x0000022EAD4C0000-memory.dmp

            memory/1616-190-0x0000022EAD470000-0x0000022EAD480000-memory.dmp

            memory/1616-187-0x0000022EAD1E0000-0x0000022EAD450000-memory.dmp

            memory/1616-188-0x0000022EAD450000-0x0000022EAD460000-memory.dmp

            memory/1616-2-0x0000022EAD1E0000-0x0000022EAD450000-memory.dmp

            memory/1616-21-0x0000022EAD490000-0x0000022EAD4A0000-memory.dmp

            memory/1616-19-0x0000022EAD480000-0x0000022EAD490000-memory.dmp

            memory/1616-17-0x0000022EAD460000-0x0000022EAD470000-memory.dmp

            memory/1616-18-0x0000022EAD470000-0x0000022EAD480000-memory.dmp

            memory/1616-14-0x0000022EAD450000-0x0000022EAD460000-memory.dmp

            memory/4804-290-0x000001E3BEAD0000-0x000001E3BEAD1000-memory.dmp