Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230621-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/06/2023, 14:37

General

  • Target
    PO 01-2302 - Kanamori.jar
  • Size 219KB
  • Sample230628-ry5vjaah9v
  • SHA256 df93b5395c2eb9211cbc3013a08d6e98b7a24b593f1160a2a6e8cb322f8bc025
  • 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
  • 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 24 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:\ProgramData\Oracle\Java\javapath\java.exe
    java -jar "C:\Users\Admin\AppData\Local\Temp\PO 01-2302 - Kanamori.jar"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:368
    • C:\Program Files\Java\jre1.8.0_66\bin\java.exe
      "C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\PO 01-2302 - Kanamori.jar"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:4792
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\PO 01-2302 - Kanamori.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3684
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\PO 01-2302 - Kanamori.jar"
          4⤵
          • Creates scheduled task(s)
          PID:1144
      • C:\Program Files\Java\jre1.8.0_66\bin\java.exe
        "C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\PO 01-2302 - Kanamori.jar"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:3224
        • 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:5068
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4424
        • 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:2468
          • 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:2204
        • 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:3744
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:840
          • 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:2948
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:4612

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            90737d32e3aba4b.timestamp

            • Path C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
            • Size 50B
            • SHA256 4591d73afce9ece3e039a90248bea0dfcd14a436ca72f870a4187f1872870205
            • MD5 SHA1 SHA512

            90737d32e3aba4b.timestamp

            • Path C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
            • Size 50B
            • SHA256 896424d4c3548ab807939cdb32ec27f565f0010cc7380bbcba739c8e26722ea6
            • MD5 SHA1 SHA512

            jna1066003106475574592.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna1066003106475574592.dll
            • Size 241KB
            • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
            • MD5 SHA1 SHA512 SSDEEP

            83aa4cc77f591dfc2374580bbd95f6ba_18e45b86-45c8-4e56-b846-cf6e0f375be5

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2177513644-1903222820-241662473-1000\83aa4cc77f591dfc2374580bbd95f6ba_18e45b86-45c8-4e56-b846-cf6e0f375be5
            • Size 45B
            • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
            • MD5 SHA1 SHA512

            PO 01-2302 - Kanamori.jar

            • Path C:\Users\Admin\AppData\Roaming\PO 01-2302 - Kanamori.jar
            • Size 219KB
            • SHA256 df93b5395c2eb9211cbc3013a08d6e98b7a24b593f1160a2a6e8cb322f8bc025
            • MD5 SHA1 SHA512 SSDEEP

            PO 01-2302 - Kanamori.jar

            • Path C:\Users\Admin\AppData\Roaming\PO 01-2302 - Kanamori.jar
            • Size 219KB
            • SHA256 df93b5395c2eb9211cbc3013a08d6e98b7a24b593f1160a2a6e8cb322f8bc025
            • MD5 SHA1 SHA512 SSDEEP

            jna-5.5.0.jar

            • Path C:\Users\Admin\AppData\Roaming\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\AppData\Roaming\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\AppData\Roaming\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\AppData\Roaming\lib\system-hook-3.5.jar
            • Size 772KB
            • SHA256 2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
            • MD5 SHA1 SHA512 SSDEEP

            PO 01-2302 - Kanamori.jar

            • Path C:\Users\Admin\PO 01-2302 - Kanamori.jar
            • Size 219KB
            • SHA256 df93b5395c2eb9211cbc3013a08d6e98b7a24b593f1160a2a6e8cb322f8bc025
            • 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/368-225-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-198-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-213-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-143-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-205-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-222-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-220-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-215-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-214-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-158-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-204-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-223-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-195-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-194-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-191-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-184-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-179-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/368-173-0x0000000002740000-0x0000000002741000-memory.dmp

            memory/3224-273-0x0000000001880000-0x0000000001881000-memory.dmp

            memory/3224-292-0x0000000001880000-0x0000000001881000-memory.dmp

            memory/4792-242-0x00000000015C0000-0x00000000015C1000-memory.dmp