Analysis

  • max time kernel
    148s
  • 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
    23/05/2024, 14:35

General

  • Target
    27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c.jar
  • Size 558KB
  • Sample240523-rybaxsee89
  • SHA256 27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c
  • 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\27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1672
    • 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:3648
    • C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c.jar"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:700
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4380
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c.jar"
          4⤵
          • Creates scheduled task(s)
          PID:3188
      • 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\27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c.jar"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:4756
        • 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:5040
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:424
        • 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:1588
          • 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:688
        • 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:2968
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:60
          • 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:4560
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:1992

      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 5b67a9c0974f24d299fb3e5090943aa625ed94ea2a4a140d632606beaa770ccd
            • MD5 SHA1 SHA512

            27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c.jar

            • Path C:\Users\Admin\27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c.jar
            • Size 558KB
            • SHA256 27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c
            • MD5 SHA1 SHA512 SSDEEP

            jna1399564342183157866.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna1399564342183157866.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

            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/700-204-0x0000027ED5B00000-0x0000027ED5B01000-memory.dmp

            memory/1672-104-0x0000025E62700000-0x0000025E62710000-memory.dmp

            memory/1672-54-0x0000025E62650000-0x0000025E62660000-memory.dmp

            memory/1672-26-0x0000025E62680000-0x0000025E62690000-memory.dmp

            memory/1672-25-0x0000025E62670000-0x0000025E62680000-memory.dmp

            memory/1672-29-0x0000025E626A0000-0x0000025E626B0000-memory.dmp

            memory/1672-30-0x0000025E60B80000-0x0000025E60B81000-memory.dmp

            memory/1672-32-0x0000025E626B0000-0x0000025E626C0000-memory.dmp

            memory/1672-35-0x0000025E626C0000-0x0000025E626D0000-memory.dmp

            memory/1672-36-0x0000025E626D0000-0x0000025E626E0000-memory.dmp

            memory/1672-42-0x0000025E626E0000-0x0000025E626F0000-memory.dmp

            memory/1672-48-0x0000025E62700000-0x0000025E62710000-memory.dmp

            memory/1672-51-0x0000025E62630000-0x0000025E62640000-memory.dmp

            memory/1672-50-0x0000025E62620000-0x0000025E62630000-memory.dmp

            memory/1672-47-0x0000025E626F0000-0x0000025E62700000-memory.dmp

            memory/1672-46-0x0000025E62640000-0x0000025E62650000-memory.dmp

            memory/1672-45-0x0000025E623B0000-0x0000025E62620000-memory.dmp

            memory/1672-57-0x0000025E62730000-0x0000025E62740000-memory.dmp

            memory/1672-56-0x0000025E62720000-0x0000025E62730000-memory.dmp

            memory/1672-55-0x0000025E62710000-0x0000025E62720000-memory.dmp

            memory/1672-61-0x0000025E62740000-0x0000025E62750000-memory.dmp

            memory/1672-60-0x0000025E62660000-0x0000025E62670000-memory.dmp

            memory/1672-113-0x0000025E62820000-0x0000025E62830000-memory.dmp

            memory/1672-65-0x0000025E62750000-0x0000025E62760000-memory.dmp

            memory/1672-64-0x0000025E62690000-0x0000025E626A0000-memory.dmp

            memory/1672-63-0x0000025E62680000-0x0000025E62690000-memory.dmp

            memory/1672-112-0x0000025E62740000-0x0000025E62750000-memory.dmp

            memory/1672-69-0x0000025E62760000-0x0000025E62770000-memory.dmp

            memory/1672-68-0x0000025E626A0000-0x0000025E626B0000-memory.dmp

            memory/1672-72-0x0000025E626B0000-0x0000025E626C0000-memory.dmp

            memory/1672-74-0x0000025E62770000-0x0000025E62780000-memory.dmp

            memory/1672-73-0x0000025E60B80000-0x0000025E60B81000-memory.dmp

            memory/1672-78-0x0000025E62780000-0x0000025E62790000-memory.dmp

            memory/1672-77-0x0000025E626C0000-0x0000025E626D0000-memory.dmp

            memory/1672-85-0x0000025E626D0000-0x0000025E626E0000-memory.dmp

            memory/1672-90-0x0000025E626E0000-0x0000025E626F0000-memory.dmp

            memory/1672-89-0x0000025E627B0000-0x0000025E627C0000-memory.dmp

            memory/1672-94-0x0000025E627D0000-0x0000025E627E0000-memory.dmp

            memory/1672-96-0x0000025E627F0000-0x0000025E62800000-memory.dmp

            memory/1672-95-0x0000025E627E0000-0x0000025E627F0000-memory.dmp

            memory/1672-93-0x0000025E626F0000-0x0000025E62700000-memory.dmp

            memory/1672-107-0x0000025E62710000-0x0000025E62720000-memory.dmp

            memory/1672-87-0x0000025E627A0000-0x0000025E627B0000-memory.dmp

            memory/1672-86-0x0000025E62790000-0x0000025E627A0000-memory.dmp

            memory/1672-100-0x0000025E60B80000-0x0000025E60B81000-memory.dmp

            memory/1672-103-0x0000025E60B80000-0x0000025E60B81000-memory.dmp

            memory/1672-106-0x0000025E62800000-0x0000025E62810000-memory.dmp

            memory/1672-16-0x0000025E62620000-0x0000025E62630000-memory.dmp

            memory/1672-110-0x0000025E62810000-0x0000025E62820000-memory.dmp

            memory/1672-109-0x0000025E62730000-0x0000025E62740000-memory.dmp

            memory/1672-108-0x0000025E62720000-0x0000025E62730000-memory.dmp

            memory/1672-88-0x0000025E627C0000-0x0000025E627D0000-memory.dmp

            memory/1672-27-0x0000025E62690000-0x0000025E626A0000-memory.dmp

            memory/1672-62-0x0000025E62670000-0x0000025E62680000-memory.dmp

            memory/1672-115-0x0000025E62750000-0x0000025E62760000-memory.dmp

            memory/1672-116-0x0000025E62830000-0x0000025E62840000-memory.dmp

            memory/1672-118-0x0000025E62760000-0x0000025E62770000-memory.dmp

            memory/1672-119-0x0000025E62840000-0x0000025E62850000-memory.dmp

            memory/1672-122-0x0000025E62770000-0x0000025E62780000-memory.dmp

            memory/1672-123-0x0000025E62850000-0x0000025E62860000-memory.dmp

            memory/1672-125-0x0000025E62780000-0x0000025E62790000-memory.dmp

            memory/1672-126-0x0000025E62860000-0x0000025E62870000-memory.dmp

            memory/1672-127-0x0000025E60B80000-0x0000025E60B81000-memory.dmp

            memory/1672-135-0x0000025E627C0000-0x0000025E627D0000-memory.dmp

            memory/1672-136-0x0000025E62870000-0x0000025E62880000-memory.dmp

            memory/1672-134-0x0000025E627A0000-0x0000025E627B0000-memory.dmp

            memory/1672-133-0x0000025E62790000-0x0000025E627A0000-memory.dmp

            memory/1672-138-0x0000025E62880000-0x0000025E62890000-memory.dmp

            memory/1672-137-0x0000025E627B0000-0x0000025E627C0000-memory.dmp

            memory/1672-143-0x0000025E62890000-0x0000025E628A0000-memory.dmp

            memory/1672-142-0x0000025E627F0000-0x0000025E62800000-memory.dmp

            memory/1672-141-0x0000025E627E0000-0x0000025E627F0000-memory.dmp

            memory/1672-140-0x0000025E627D0000-0x0000025E627E0000-memory.dmp

            memory/1672-149-0x0000025E62800000-0x0000025E62810000-memory.dmp

            memory/1672-150-0x0000025E628A0000-0x0000025E628B0000-memory.dmp

            memory/1672-153-0x0000025E60B80000-0x0000025E60B81000-memory.dmp

            memory/1672-155-0x0000025E62810000-0x0000025E62820000-memory.dmp

            memory/1672-158-0x0000025E62700000-0x0000025E62710000-memory.dmp

            memory/1672-164-0x0000025E62670000-0x0000025E62680000-memory.dmp

            memory/1672-167-0x0000025E626A0000-0x0000025E626B0000-memory.dmp

            memory/1672-178-0x0000025E62810000-0x0000025E62820000-memory.dmp

            memory/1672-177-0x0000025E62800000-0x0000025E62810000-memory.dmp

            memory/1672-176-0x0000025E626D0000-0x0000025E626E0000-memory.dmp

            memory/1672-175-0x0000025E62780000-0x0000025E62790000-memory.dmp

            memory/1672-174-0x0000025E62760000-0x0000025E62770000-memory.dmp

            memory/1672-173-0x0000025E62730000-0x0000025E62740000-memory.dmp

            memory/1672-172-0x0000025E623B0000-0x0000025E62620000-memory.dmp

            memory/1672-171-0x0000025E626F0000-0x0000025E62700000-memory.dmp

            memory/1672-170-0x0000025E626E0000-0x0000025E626F0000-memory.dmp

            memory/1672-169-0x0000025E626C0000-0x0000025E626D0000-memory.dmp

            memory/1672-168-0x0000025E626B0000-0x0000025E626C0000-memory.dmp

            memory/1672-166-0x0000025E62690000-0x0000025E626A0000-memory.dmp

            memory/1672-165-0x0000025E62680000-0x0000025E62690000-memory.dmp

            memory/1672-163-0x0000025E62660000-0x0000025E62670000-memory.dmp

            memory/1672-162-0x0000025E62640000-0x0000025E62650000-memory.dmp

            memory/1672-17-0x0000025E62630000-0x0000025E62640000-memory.dmp

            memory/1672-21-0x0000025E62660000-0x0000025E62670000-memory.dmp

            memory/1672-19-0x0000025E62650000-0x0000025E62660000-memory.dmp

            memory/1672-161-0x0000025E62650000-0x0000025E62660000-memory.dmp

            memory/1672-160-0x0000025E62630000-0x0000025E62640000-memory.dmp

            memory/1672-159-0x0000025E62620000-0x0000025E62630000-memory.dmp

            memory/1672-2-0x0000025E623B0000-0x0000025E62620000-memory.dmp

            memory/1672-18-0x0000025E62640000-0x0000025E62650000-memory.dmp

            memory/4756-274-0x000001F2B82C0000-0x000001F2B82C1000-memory.dmp

            memory/4756-295-0x000001F2B82C0000-0x000001F2B82C1000-memory.dmp