Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 19:53

General

  • Target
    bc9a2a405326685130143b230720469ff9e1a294157748f7ccae56faf5d15887.jar
  • Size 481KB
  • Sample240601-ymactadc5z
  • 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:3568
    • 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:4360
    • 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:4828
      • 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:4072
        • 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:5028
      • 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:5108
        • 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:2516
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:5040
        • 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:1280
          • 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:4500
        • 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:3732
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:3712
          • 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:4608
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:2796

      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 3e4bc9f2b3a587d534ca5fd077e28b591afd02e70795a5fb5cc70aa8012c625e
            • MD5 SHA1 SHA512

            3903daac9bc4a3b7.timestamp

            • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
            • Size 46B
            • SHA256 3ba9505a02486f00ac1f6e7943fdc8387e0b9f898eb1c651fd2272f9f4df7aa4
            • MD5 SHA1 SHA512

            jna7778554357757539421.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna7778554357757539421.dll
            • Size 241KB
            • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
            • MD5 SHA1 SHA512 SSDEEP

            83aa4cc77f591dfc2374580bbd95f6ba_a47c70d8-7adc-4ad7-994f-644a8c84c176

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3571316656-3665257725-2415531812-1000\83aa4cc77f591dfc2374580bbd95f6ba_a47c70d8-7adc-4ad7-994f-644a8c84c176
            • 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/3568-103-0x00000232B2890000-0x00000232B28A0000-memory.dmp

            memory/3568-70-0x00000232B2730000-0x00000232B2740000-memory.dmp

            memory/3568-20-0x00000232B26F0000-0x00000232B2700000-memory.dmp

            memory/3568-25-0x00000232B2710000-0x00000232B2720000-memory.dmp

            memory/3568-26-0x00000232B2720000-0x00000232B2730000-memory.dmp

            memory/3568-28-0x00000232B2730000-0x00000232B2740000-memory.dmp

            memory/3568-30-0x00000232B2740000-0x00000232B2750000-memory.dmp

            memory/3568-32-0x00000232B2450000-0x00000232B26C0000-memory.dmp

            memory/3568-34-0x00000232B2750000-0x00000232B2760000-memory.dmp

            memory/3568-42-0x00000232B2790000-0x00000232B27A0000-memory.dmp

            memory/3568-41-0x00000232B2780000-0x00000232B2790000-memory.dmp

            memory/3568-40-0x00000232B2770000-0x00000232B2780000-memory.dmp

            memory/3568-39-0x00000232B2760000-0x00000232B2770000-memory.dmp

            memory/3568-47-0x00000232B27B0000-0x00000232B27C0000-memory.dmp

            memory/3568-46-0x00000232B27A0000-0x00000232B27B0000-memory.dmp

            memory/3568-45-0x00000232B26D0000-0x00000232B26E0000-memory.dmp

            memory/3568-33-0x00000232B26C0000-0x00000232B26D0000-memory.dmp

            memory/3568-49-0x00000232B26E0000-0x00000232B26F0000-memory.dmp

            memory/3568-50-0x00000232B27C0000-0x00000232B27D0000-memory.dmp

            memory/3568-57-0x00000232B27D0000-0x00000232B27E0000-memory.dmp

            memory/3568-112-0x00000232B28D0000-0x00000232B28E0000-memory.dmp

            memory/3568-59-0x00000232B2700000-0x00000232B2710000-memory.dmp

            memory/3568-60-0x00000232B27E0000-0x00000232B27F0000-memory.dmp

            memory/3568-63-0x00000232B27F0000-0x00000232B2800000-memory.dmp

            memory/3568-62-0x00000232B2710000-0x00000232B2720000-memory.dmp

            memory/3568-65-0x00000232B0B80000-0x00000232B0B81000-memory.dmp

            memory/3568-67-0x00000232B2800000-0x00000232B2810000-memory.dmp

            memory/3568-66-0x00000232B2720000-0x00000232B2730000-memory.dmp

            memory/3568-71-0x00000232B2810000-0x00000232B2820000-memory.dmp

            memory/3568-72-0x00000232B2820000-0x00000232B2830000-memory.dmp

            memory/3568-74-0x00000232B2740000-0x00000232B2750000-memory.dmp

            memory/3568-108-0x00000232B28B0000-0x00000232B28C0000-memory.dmp

            memory/3568-75-0x00000232B2830000-0x00000232B2840000-memory.dmp

            memory/3568-78-0x00000232B2750000-0x00000232B2760000-memory.dmp

            memory/3568-80-0x00000232B2850000-0x00000232B2860000-memory.dmp

            memory/3568-79-0x00000232B2840000-0x00000232B2850000-memory.dmp

            memory/3568-84-0x00000232B0B80000-0x00000232B0B81000-memory.dmp

            memory/3568-86-0x00000232B2760000-0x00000232B2770000-memory.dmp

            memory/3568-90-0x00000232B2860000-0x00000232B2870000-memory.dmp

            memory/3568-89-0x00000232B2790000-0x00000232B27A0000-memory.dmp

            memory/3568-88-0x00000232B2780000-0x00000232B2790000-memory.dmp

            memory/3568-87-0x00000232B2770000-0x00000232B2780000-memory.dmp

            memory/3568-94-0x00000232B2870000-0x00000232B2880000-memory.dmp

            memory/3568-93-0x00000232B27B0000-0x00000232B27C0000-memory.dmp

            memory/3568-109-0x00000232B27F0000-0x00000232B2800000-memory.dmp

            memory/3568-97-0x00000232B27C0000-0x00000232B27D0000-memory.dmp

            memory/3568-92-0x00000232B27A0000-0x00000232B27B0000-memory.dmp

            memory/3568-104-0x00000232B28A0000-0x00000232B28B0000-memory.dmp

            memory/3568-102-0x00000232B27D0000-0x00000232B27E0000-memory.dmp

            memory/3568-18-0x00000232B26E0000-0x00000232B26F0000-memory.dmp

            memory/3568-105-0x00000232B27E0000-0x00000232B27F0000-memory.dmp

            memory/3568-110-0x00000232B28C0000-0x00000232B28D0000-memory.dmp

            memory/3568-98-0x00000232B2880000-0x00000232B2890000-memory.dmp

            memory/3568-22-0x00000232B2700000-0x00000232B2710000-memory.dmp

            memory/3568-56-0x00000232B26F0000-0x00000232B2700000-memory.dmp

            memory/3568-111-0x00000232B2800000-0x00000232B2810000-memory.dmp

            memory/3568-121-0x00000232B2900000-0x00000232B2910000-memory.dmp

            memory/3568-120-0x00000232B28F0000-0x00000232B2900000-memory.dmp

            memory/3568-119-0x00000232B28E0000-0x00000232B28F0000-memory.dmp

            memory/3568-118-0x00000232B2820000-0x00000232B2830000-memory.dmp

            memory/3568-117-0x00000232B2810000-0x00000232B2820000-memory.dmp

            memory/3568-124-0x00000232B0B80000-0x00000232B0B81000-memory.dmp

            memory/3568-127-0x00000232B0B80000-0x00000232B0B81000-memory.dmp

            memory/3568-130-0x00000232B2910000-0x00000232B2920000-memory.dmp

            memory/3568-129-0x00000232B2830000-0x00000232B2840000-memory.dmp

            memory/3568-133-0x00000232B2850000-0x00000232B2860000-memory.dmp

            memory/3568-132-0x00000232B2840000-0x00000232B2850000-memory.dmp

            memory/3568-134-0x00000232B2920000-0x00000232B2930000-memory.dmp

            memory/3568-136-0x00000232B2860000-0x00000232B2870000-memory.dmp

            memory/3568-137-0x00000232B2930000-0x00000232B2940000-memory.dmp

            memory/3568-139-0x00000232B2870000-0x00000232B2880000-memory.dmp

            memory/3568-140-0x00000232B2940000-0x00000232B2950000-memory.dmp

            memory/3568-143-0x00000232B2950000-0x00000232B2960000-memory.dmp

            memory/3568-142-0x00000232B2880000-0x00000232B2890000-memory.dmp

            memory/3568-146-0x00000232B2890000-0x00000232B28A0000-memory.dmp

            memory/3568-149-0x00000232B2960000-0x00000232B2970000-memory.dmp

            memory/3568-148-0x00000232B28B0000-0x00000232B28C0000-memory.dmp

            memory/3568-147-0x00000232B28A0000-0x00000232B28B0000-memory.dmp

            memory/3568-151-0x00000232B2970000-0x00000232B2980000-memory.dmp

            memory/3568-152-0x00000232B0B80000-0x00000232B0B81000-memory.dmp

            memory/3568-155-0x00000232B2980000-0x00000232B2990000-memory.dmp

            memory/3568-154-0x00000232B28C0000-0x00000232B28D0000-memory.dmp

            memory/3568-157-0x00000232B28D0000-0x00000232B28E0000-memory.dmp

            memory/3568-158-0x00000232B2990000-0x00000232B29A0000-memory.dmp

            memory/3568-160-0x00000232B0B80000-0x00000232B0B81000-memory.dmp

            memory/3568-167-0x00000232B28E0000-0x00000232B28F0000-memory.dmp

            memory/3568-170-0x00000232B29A0000-0x00000232B29B0000-memory.dmp

            memory/3568-169-0x00000232B2900000-0x00000232B2910000-memory.dmp

            memory/3568-168-0x00000232B28F0000-0x00000232B2900000-memory.dmp

            memory/3568-175-0x00000232B2910000-0x00000232B2920000-memory.dmp

            memory/3568-176-0x00000232B29B0000-0x00000232B29C0000-memory.dmp

            memory/3568-181-0x00000232B0B80000-0x00000232B0B81000-memory.dmp

            memory/3568-184-0x00000232B2920000-0x00000232B2930000-memory.dmp

            memory/3568-185-0x00000232B2930000-0x00000232B2940000-memory.dmp

            memory/3568-189-0x00000232B2940000-0x00000232B2950000-memory.dmp

            memory/3568-190-0x00000232B29C0000-0x00000232B29D0000-memory.dmp

            memory/3568-191-0x00000232B2450000-0x00000232B26C0000-memory.dmp

            memory/3568-15-0x00000232B26C0000-0x00000232B26D0000-memory.dmp

            memory/3568-194-0x00000232B26E0000-0x00000232B26F0000-memory.dmp

            memory/3568-193-0x00000232B26C0000-0x00000232B26D0000-memory.dmp

            memory/3568-192-0x00000232B26D0000-0x00000232B26E0000-memory.dmp

            memory/3568-2-0x00000232B2450000-0x00000232B26C0000-memory.dmp

            memory/3568-17-0x00000232B26D0000-0x00000232B26E0000-memory.dmp

            memory/3568-12-0x00000232B0B80000-0x00000232B0B81000-memory.dmp

            memory/4828-256-0x0000024073D80000-0x0000024073D81000-memory.dmp

            memory/5108-368-0x0000022CBBB60000-0x0000022CBBB61000-memory.dmp

            memory/5108-396-0x0000022CBBB60000-0x0000022CBBB61000-memory.dmp

            memory/5108-398-0x0000022CBBB60000-0x0000022CBBB61000-memory.dmp