Analysis

  • max time kernel
    169s
  • max time network
    171s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    22/05/2024, 11:15

General

  • Target
    27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c.jar
  • Size 558KB
  • Sample240522-nc1rxacf97
  • 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:2772
    • 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:168
    • 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:1304
      • 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:1064
        • 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:4932
      • 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:3356
        • 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:2508
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:96
        • 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:4880
          • 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:1276
        • 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:3392
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:4228
          • 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:1016
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:596

      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 bd1f7a4a40252cb4e74713c758c7b283bd2b04281debd7b66ac1687df218ef65
            • MD5 SHA1 SHA512

            27f117c2cdae0c702f1095bb7c6fe40d7efb18e4ac14d3eca5570ce1d24bac2c.jar

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

            83aa4cc77f591dfc2374580bbd95f6ba_ebaa0802-254d-4be1-a642-a8a5c0b06224

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-4106386276-4127174233-3637007343-1000\83aa4cc77f591dfc2374580bbd95f6ba_ebaa0802-254d-4be1-a642-a8a5c0b06224
            • 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

            jna954485986287859119.dll

            • Path \Users\Admin\AppData\Local\Temp\jna-63116079\jna954485986287859119.dll
            • Size 241KB
            • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
            • MD5 SHA1 SHA512 SSDEEP

            memory/1304-250-0x000001C4715D0000-0x000001C4715D1000-memory.dmp

            memory/2772-106-0x00000201A90F0000-0x00000201A90F1000-memory.dmp

            memory/2772-65-0x00000201AACD0000-0x00000201AACE0000-memory.dmp

            memory/2772-26-0x00000201AAC00000-0x00000201AAC10000-memory.dmp

            memory/2772-25-0x00000201AABF0000-0x00000201AAC00000-memory.dmp

            memory/2772-32-0x00000201AAC30000-0x00000201AAC40000-memory.dmp

            memory/2772-31-0x00000201AAC20000-0x00000201AAC30000-memory.dmp

            memory/2772-34-0x00000201AAC40000-0x00000201AAC50000-memory.dmp

            memory/2772-40-0x00000201AAC50000-0x00000201AAC60000-memory.dmp

            memory/2772-41-0x00000201AAC60000-0x00000201AAC70000-memory.dmp

            memory/2772-43-0x00000201A90F0000-0x00000201A90F1000-memory.dmp

            memory/2772-44-0x00000201AAC70000-0x00000201AAC80000-memory.dmp

            memory/2772-55-0x00000201AABD0000-0x00000201AABE0000-memory.dmp

            memory/2772-54-0x00000201AABC0000-0x00000201AABD0000-memory.dmp

            memory/2772-53-0x00000201AABB0000-0x00000201AABC0000-memory.dmp

            memory/2772-52-0x00000201AACA0000-0x00000201AACB0000-memory.dmp

            memory/2772-51-0x00000201AABA0000-0x00000201AABB0000-memory.dmp

            memory/2772-60-0x00000201AACC0000-0x00000201AACD0000-memory.dmp

            memory/2772-59-0x00000201AACB0000-0x00000201AACC0000-memory.dmp

            memory/2772-58-0x00000201AABE0000-0x00000201AABF0000-memory.dmp

            memory/2772-50-0x00000201AAC90000-0x00000201AACA0000-memory.dmp

            memory/2772-49-0x00000201AAC80000-0x00000201AAC90000-memory.dmp

            memory/2772-113-0x00000201AAD90000-0x00000201AADA0000-memory.dmp

            memory/2772-64-0x00000201AAC10000-0x00000201AAC20000-memory.dmp

            memory/2772-63-0x00000201AAC00000-0x00000201AAC10000-memory.dmp

            memory/2772-62-0x00000201AABF0000-0x00000201AAC00000-memory.dmp

            memory/2772-115-0x00000201AACE0000-0x00000201AACF0000-memory.dmp

            memory/2772-71-0x00000201AACE0000-0x00000201AACF0000-memory.dmp

            memory/2772-70-0x00000201AAC30000-0x00000201AAC40000-memory.dmp

            memory/2772-69-0x00000201AAC20000-0x00000201AAC30000-memory.dmp

            memory/2772-77-0x00000201AACF0000-0x00000201AAD00000-memory.dmp

            memory/2772-75-0x00000201AAC40000-0x00000201AAC50000-memory.dmp

            memory/2772-79-0x00000201AAC50000-0x00000201AAC60000-memory.dmp

            memory/2772-80-0x00000201AAD00000-0x00000201AAD10000-memory.dmp

            memory/2772-83-0x00000201AAC60000-0x00000201AAC70000-memory.dmp

            memory/2772-84-0x00000201AAD10000-0x00000201AAD20000-memory.dmp

            memory/2772-86-0x00000201AAC70000-0x00000201AAC80000-memory.dmp

            memory/2772-87-0x00000201AAD20000-0x00000201AAD30000-memory.dmp

            memory/2772-90-0x00000201AAC90000-0x00000201AACA0000-memory.dmp

            memory/2772-91-0x00000201AAD30000-0x00000201AAD40000-memory.dmp

            memory/2772-89-0x00000201AAC80000-0x00000201AAC90000-memory.dmp

            memory/2772-112-0x00000201AACD0000-0x00000201AACE0000-memory.dmp

            memory/2772-98-0x00000201AAD60000-0x00000201AAD70000-memory.dmp

            memory/2772-96-0x00000201AAD40000-0x00000201AAD50000-memory.dmp

            memory/2772-103-0x00000201A90F0000-0x00000201A90F1000-memory.dmp

            memory/2772-104-0x00000201AACA0000-0x00000201AACB0000-memory.dmp

            memory/2772-105-0x00000201AAD70000-0x00000201AAD80000-memory.dmp

            memory/2772-21-0x00000201AABE0000-0x00000201AABF0000-memory.dmp

            memory/2772-108-0x00000201AACB0000-0x00000201AACC0000-memory.dmp

            memory/2772-110-0x00000201AAD80000-0x00000201AAD90000-memory.dmp

            memory/2772-109-0x00000201AACC0000-0x00000201AACD0000-memory.dmp

            memory/2772-97-0x00000201AAD50000-0x00000201AAD60000-memory.dmp

            memory/2772-27-0x00000201AAC10000-0x00000201AAC20000-memory.dmp

            memory/2772-48-0x00000201AA930000-0x00000201AABA0000-memory.dmp

            memory/2772-116-0x00000201AADA0000-0x00000201AADB0000-memory.dmp

            memory/2772-118-0x00000201AACF0000-0x00000201AAD00000-memory.dmp

            memory/2772-119-0x00000201AADB0000-0x00000201AADC0000-memory.dmp

            memory/2772-122-0x00000201AADC0000-0x00000201AADD0000-memory.dmp

            memory/2772-121-0x00000201AAD00000-0x00000201AAD10000-memory.dmp

            memory/2772-126-0x00000201AADD0000-0x00000201AADE0000-memory.dmp

            memory/2772-125-0x00000201AAD10000-0x00000201AAD20000-memory.dmp

            memory/2772-128-0x00000201AAD20000-0x00000201AAD30000-memory.dmp

            memory/2772-129-0x00000201AADE0000-0x00000201AADF0000-memory.dmp

            memory/2772-131-0x00000201AAD30000-0x00000201AAD40000-memory.dmp

            memory/2772-132-0x00000201AADF0000-0x00000201AAE00000-memory.dmp

            memory/2772-134-0x00000201AAD40000-0x00000201AAD50000-memory.dmp

            memory/2772-137-0x00000201AAE00000-0x00000201AAE10000-memory.dmp

            memory/2772-136-0x00000201AAD60000-0x00000201AAD70000-memory.dmp

            memory/2772-135-0x00000201AAD50000-0x00000201AAD60000-memory.dmp

            memory/2772-139-0x00000201A90F0000-0x00000201A90F1000-memory.dmp

            memory/2772-145-0x00000201AAD70000-0x00000201AAD80000-memory.dmp

            memory/2772-146-0x00000201AAE10000-0x00000201AAE20000-memory.dmp

            memory/2772-150-0x00000201A90F0000-0x00000201A90F1000-memory.dmp

            memory/2772-154-0x00000201AAD80000-0x00000201AAD90000-memory.dmp

            memory/2772-156-0x00000201AAD90000-0x00000201AADA0000-memory.dmp

            memory/2772-157-0x00000201AAE20000-0x00000201AAE30000-memory.dmp

            memory/2772-158-0x00000201A90F0000-0x00000201A90F1000-memory.dmp

            memory/2772-166-0x00000201AAC00000-0x00000201AAC10000-memory.dmp

            memory/2772-165-0x00000201AABF0000-0x00000201AAC00000-memory.dmp

            memory/2772-164-0x00000201AABE0000-0x00000201AABF0000-memory.dmp

            memory/2772-159-0x00000201AACA0000-0x00000201AACB0000-memory.dmp

            memory/2772-163-0x00000201AABD0000-0x00000201AABE0000-memory.dmp

            memory/2772-174-0x00000201AAC80000-0x00000201AAC90000-memory.dmp

            memory/2772-179-0x00000201AACD0000-0x00000201AACE0000-memory.dmp

            memory/2772-178-0x00000201AACC0000-0x00000201AACD0000-memory.dmp

            memory/2772-177-0x00000201AACB0000-0x00000201AACC0000-memory.dmp

            memory/2772-176-0x00000201AAC90000-0x00000201AACA0000-memory.dmp

            memory/2772-175-0x00000201AA930000-0x00000201AABA0000-memory.dmp

            memory/2772-173-0x00000201AAC70000-0x00000201AAC80000-memory.dmp

            memory/2772-172-0x00000201AAC60000-0x00000201AAC70000-memory.dmp

            memory/2772-171-0x00000201AAC50000-0x00000201AAC60000-memory.dmp

            memory/2772-169-0x00000201AAC30000-0x00000201AAC40000-memory.dmp

            memory/2772-170-0x00000201AAC40000-0x00000201AAC50000-memory.dmp

            memory/2772-168-0x00000201AAC20000-0x00000201AAC30000-memory.dmp

            memory/2772-162-0x00000201AABC0000-0x00000201AABD0000-memory.dmp

            memory/2772-18-0x00000201AABC0000-0x00000201AABD0000-memory.dmp

            memory/2772-19-0x00000201AABD0000-0x00000201AABE0000-memory.dmp

            memory/2772-17-0x00000201AABB0000-0x00000201AABC0000-memory.dmp

            memory/2772-14-0x00000201AABA0000-0x00000201AABB0000-memory.dmp

            memory/2772-2-0x00000201AA930000-0x00000201AABA0000-memory.dmp

            memory/2772-161-0x00000201AABB0000-0x00000201AABC0000-memory.dmp

            memory/2772-160-0x00000201AABA0000-0x00000201AABB0000-memory.dmp

            memory/2772-167-0x00000201AAC10000-0x00000201AAC20000-memory.dmp

            memory/3356-301-0x000001DD6E2C0000-0x000001DD6E2C1000-memory.dmp

            memory/3356-308-0x000001DD6E2C0000-0x000001DD6E2C1000-memory.dmp