Analysis

  • max time kernel
    149s
  • 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
    08/06/2024, 07:46

General

  • Target
    ae81b5336b8e70c6fc258e963c24346ded948f6df565a51dde18d7cdcfec753c.jar
  • Size 452KB
  • Sample240608-jmcevabb82
  • SHA256 ae81b5336b8e70c6fc258e963c24346ded948f6df565a51dde18d7cdcfec753c
  • 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\ae81b5336b8e70c6fc258e963c24346ded948f6df565a51dde18d7cdcfec753c.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5016
    • 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:5104
    • C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\ae81b5336b8e70c6fc258e963c24346ded948f6df565a51dde18d7cdcfec753c.jar"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2120
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\ae81b5336b8e70c6fc258e963c24346ded948f6df565a51dde18d7cdcfec753c.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3772
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\ae81b5336b8e70c6fc258e963c24346ded948f6df565a51dde18d7cdcfec753c.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\ae81b5336b8e70c6fc258e963c24346ded948f6df565a51dde18d7cdcfec753c.jar"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:3948
        • 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:440
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2704
        • 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:1200
          • 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:3432
        • 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:4552
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:3584
          • 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:4032
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:3900

      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 2f3ffbe2d898433d1c75b891597eafb12a15aa987121eb769385c881a96f2c79
            • MD5 SHA1 SHA512

            3903daac9bc4a3b7.timestamp

            • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
            • Size 46B
            • SHA256 edfb8f6a471747e43b6f4323cc3b644f01fb83f5893e9219b8009aa8930d5947
            • MD5 SHA1 SHA512

            jna3854242922101723004.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna3854242922101723004.dll
            • Size 241KB
            • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
            • MD5 SHA1 SHA512 SSDEEP

            83aa4cc77f591dfc2374580bbd95f6ba_310807ab-751f-4d81-ae09-b202eaf21e19

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-4124900551-4068476067-3491212533-1000\83aa4cc77f591dfc2374580bbd95f6ba_310807ab-751f-4d81-ae09-b202eaf21e19
            • Size 45B
            • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
            • MD5 SHA1 SHA512

            ae81b5336b8e70c6fc258e963c24346ded948f6df565a51dde18d7cdcfec753c.jar

            • Path C:\Users\Admin\ae81b5336b8e70c6fc258e963c24346ded948f6df565a51dde18d7cdcfec753c.jar
            • Size 452KB
            • SHA256 ae81b5336b8e70c6fc258e963c24346ded948f6df565a51dde18d7cdcfec753c
            • 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/2120-305-0x000002E7700E0000-0x000002E7700E1000-memory.dmp

            memory/3948-389-0x0000018229440000-0x0000018229441000-memory.dmp

            memory/3948-373-0x0000018229440000-0x0000018229441000-memory.dmp

            memory/5016-97-0x000001B2D9500000-0x000001B2D9510000-memory.dmp

            memory/5016-172-0x000001B2D9650000-0x000001B2D9660000-memory.dmp

            memory/5016-26-0x000001B2D9390000-0x000001B2D93A0000-memory.dmp

            memory/5016-34-0x000001B2D93E0000-0x000001B2D93F0000-memory.dmp

            memory/5016-33-0x000001B2D93D0000-0x000001B2D93E0000-memory.dmp

            memory/5016-40-0x000001B2D9410000-0x000001B2D9420000-memory.dmp

            memory/5016-39-0x000001B2D9400000-0x000001B2D9410000-memory.dmp

            memory/5016-38-0x000001B2D93F0000-0x000001B2D9400000-memory.dmp

            memory/5016-32-0x000001B2D93C0000-0x000001B2D93D0000-memory.dmp

            memory/5016-44-0x000001B2D9430000-0x000001B2D9440000-memory.dmp

            memory/5016-43-0x000001B2D9420000-0x000001B2D9430000-memory.dmp

            memory/5016-47-0x000001B2D9440000-0x000001B2D9450000-memory.dmp

            memory/5016-56-0x000001B2D9340000-0x000001B2D9350000-memory.dmp

            memory/5016-60-0x000001B2D9370000-0x000001B2D9380000-memory.dmp

            memory/5016-58-0x000001B2D9470000-0x000001B2D9480000-memory.dmp

            memory/5016-57-0x000001B2D9350000-0x000001B2D9360000-memory.dmp

            memory/5016-55-0x000001B2D9460000-0x000001B2D9470000-memory.dmp

            memory/5016-54-0x000001B2D9450000-0x000001B2D9460000-memory.dmp

            memory/5016-53-0x000001B2D90D0000-0x000001B2D9340000-memory.dmp

            memory/5016-63-0x000001B2D9480000-0x000001B2D9490000-memory.dmp

            memory/5016-62-0x000001B2D9360000-0x000001B2D9370000-memory.dmp

            memory/5016-66-0x000001B2D9490000-0x000001B2D94A0000-memory.dmp

            memory/5016-65-0x000001B2D9380000-0x000001B2D9390000-memory.dmp

            memory/5016-67-0x000001B2D78A0000-0x000001B2D78A1000-memory.dmp

            memory/5016-70-0x000001B2D93A0000-0x000001B2D93B0000-memory.dmp

            memory/5016-72-0x000001B2D94A0000-0x000001B2D94B0000-memory.dmp

            memory/5016-71-0x000001B2D93B0000-0x000001B2D93C0000-memory.dmp

            memory/5016-69-0x000001B2D9390000-0x000001B2D93A0000-memory.dmp

            memory/5016-77-0x000001B2D94B0000-0x000001B2D94C0000-memory.dmp

            memory/5016-76-0x000001B2D93E0000-0x000001B2D93F0000-memory.dmp

            memory/5016-75-0x000001B2D93D0000-0x000001B2D93E0000-memory.dmp

            memory/5016-83-0x000001B2D94C0000-0x000001B2D94D0000-memory.dmp

            memory/5016-82-0x000001B2D9410000-0x000001B2D9420000-memory.dmp

            memory/5016-81-0x000001B2D9400000-0x000001B2D9410000-memory.dmp

            memory/5016-80-0x000001B2D93F0000-0x000001B2D9400000-memory.dmp

            memory/5016-74-0x000001B2D93C0000-0x000001B2D93D0000-memory.dmp

            memory/5016-85-0x000001B2D9430000-0x000001B2D9440000-memory.dmp

            memory/5016-86-0x000001B2D94D0000-0x000001B2D94E0000-memory.dmp

            memory/5016-84-0x000001B2D9420000-0x000001B2D9430000-memory.dmp

            memory/5016-90-0x000001B2D94E0000-0x000001B2D94F0000-memory.dmp

            memory/5016-89-0x000001B2D9440000-0x000001B2D9450000-memory.dmp

            memory/5016-94-0x000001B2D94F0000-0x000001B2D9500000-memory.dmp

            memory/5016-93-0x000001B2D9450000-0x000001B2D9460000-memory.dmp

            memory/5016-96-0x000001B2D9460000-0x000001B2D9470000-memory.dmp

            memory/5016-28-0x000001B2D93B0000-0x000001B2D93C0000-memory.dmp

            memory/5016-99-0x000001B2D78A0000-0x000001B2D78A1000-memory.dmp

            memory/5016-100-0x000001B2D9470000-0x000001B2D9480000-memory.dmp

            memory/5016-101-0x000001B2D9510000-0x000001B2D9520000-memory.dmp

            memory/5016-105-0x000001B2D9480000-0x000001B2D9490000-memory.dmp

            memory/5016-106-0x000001B2D9520000-0x000001B2D9530000-memory.dmp

            memory/5016-27-0x000001B2D93A0000-0x000001B2D93B0000-memory.dmp

            memory/5016-112-0x000001B2D9540000-0x000001B2D9550000-memory.dmp

            memory/5016-171-0x000001B2D9590000-0x000001B2D95A0000-memory.dmp

            memory/5016-110-0x000001B2D9490000-0x000001B2D94A0000-memory.dmp

            memory/5016-123-0x000001B2D9580000-0x000001B2D9590000-memory.dmp

            memory/5016-127-0x000001B2D94D0000-0x000001B2D94E0000-memory.dmp

            memory/5016-126-0x000001B2D95A0000-0x000001B2D95B0000-memory.dmp

            memory/5016-125-0x000001B2D94C0000-0x000001B2D94D0000-memory.dmp

            memory/5016-124-0x000001B2D9590000-0x000001B2D95A0000-memory.dmp

            memory/5016-122-0x000001B2D94B0000-0x000001B2D94C0000-memory.dmp

            memory/5016-121-0x000001B2D9570000-0x000001B2D9580000-memory.dmp

            memory/5016-120-0x000001B2D9560000-0x000001B2D9570000-memory.dmp

            memory/5016-134-0x000001B2D78A0000-0x000001B2D78A1000-memory.dmp

            memory/5016-130-0x000001B2D95B0000-0x000001B2D95C0000-memory.dmp

            memory/5016-117-0x000001B2D94A0000-0x000001B2D94B0000-memory.dmp

            memory/5016-138-0x000001B2D94E0000-0x000001B2D94F0000-memory.dmp

            memory/5016-144-0x000001B2D9500000-0x000001B2D9510000-memory.dmp

            memory/5016-143-0x000001B2D95E0000-0x000001B2D95F0000-memory.dmp

            memory/5016-142-0x000001B2D94F0000-0x000001B2D9500000-memory.dmp

            memory/5016-141-0x000001B2D95D0000-0x000001B2D95E0000-memory.dmp

            memory/5016-139-0x000001B2D95C0000-0x000001B2D95D0000-memory.dmp

            memory/5016-135-0x000001B2D78A0000-0x000001B2D78A1000-memory.dmp

            memory/5016-149-0x000001B2D9600000-0x000001B2D9610000-memory.dmp

            memory/5016-148-0x000001B2D95F0000-0x000001B2D9600000-memory.dmp

            memory/5016-147-0x000001B2D9510000-0x000001B2D9520000-memory.dmp

            memory/5016-152-0x000001B2D9610000-0x000001B2D9620000-memory.dmp

            memory/5016-151-0x000001B2D9520000-0x000001B2D9530000-memory.dmp

            memory/5016-158-0x000001B2D9620000-0x000001B2D9630000-memory.dmp

            memory/5016-157-0x000001B2D9560000-0x000001B2D9570000-memory.dmp

            memory/5016-156-0x000001B2D9550000-0x000001B2D9560000-memory.dmp

            memory/5016-155-0x000001B2D9540000-0x000001B2D9550000-memory.dmp

            memory/5016-154-0x000001B2D9530000-0x000001B2D9540000-memory.dmp

            memory/5016-162-0x000001B2D78A0000-0x000001B2D78A1000-memory.dmp

            memory/5016-168-0x000001B2D9640000-0x000001B2D9650000-memory.dmp

            memory/5016-167-0x000001B2D9630000-0x000001B2D9640000-memory.dmp

            memory/5016-166-0x000001B2D9570000-0x000001B2D9580000-memory.dmp

            memory/5016-113-0x000001B2D9550000-0x000001B2D9560000-memory.dmp

            memory/5016-111-0x000001B2D9530000-0x000001B2D9540000-memory.dmp

            memory/5016-170-0x000001B2D9580000-0x000001B2D9590000-memory.dmp

            memory/5016-179-0x000001B2D78A0000-0x000001B2D78A1000-memory.dmp

            memory/5016-181-0x000001B2D95A0000-0x000001B2D95B0000-memory.dmp

            memory/5016-185-0x000001B2D9660000-0x000001B2D9670000-memory.dmp

            memory/5016-184-0x000001B2D95B0000-0x000001B2D95C0000-memory.dmp

            memory/5016-22-0x000001B2D9380000-0x000001B2D9390000-memory.dmp

            memory/5016-19-0x000001B2D9360000-0x000001B2D9370000-memory.dmp

            memory/5016-20-0x000001B2D9370000-0x000001B2D9380000-memory.dmp

            memory/5016-16-0x000001B2D9350000-0x000001B2D9360000-memory.dmp

            memory/5016-14-0x000001B2D9340000-0x000001B2D9350000-memory.dmp

            memory/5016-12-0x000001B2D78A0000-0x000001B2D78A1000-memory.dmp

            memory/5016-2-0x000001B2D90D0000-0x000001B2D9340000-memory.dmp

            memory/5016-187-0x000001B2D9460000-0x000001B2D9470000-memory.dmp

            memory/5016-189-0x000001B2D9350000-0x000001B2D9360000-memory.dmp

            memory/5016-188-0x000001B2D9340000-0x000001B2D9350000-memory.dmp