Resubmissions

21/06/2024, 17:49

240621-wea82ayeph10

09/06/2024, 09:22

240609-lb4fasgf3w10

Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2024, 09:22

General

  • Target
    e4bc1b6f2e541e90a1ed736284d2e383fcb739f10466b1fdd390211e01ed4dae.jar
  • Size 123KB
  • Sample240609-lb4fasgf3w
  • SHA256 e4bc1b6f2e541e90a1ed736284d2e383fcb739f10466b1fdd390211e01ed4dae
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • STRRAT

    STRRAT is a remote access tool than can steal credentials and log keystrokes.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Loads dropped DLL 2 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.

  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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 30 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\e4bc1b6f2e541e90a1ed736284d2e383fcb739f10466b1fdd390211e01ed4dae.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4988
    • 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:4656
    • C:\Windows\SYSTEM32\wscript.exe
      wscript C:\Users\Admin\pzsjuirnnn.js
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:1360
      • C:\Program Files\Java\jre-1.8\bin\javaw.exe
        "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\aenqqlavm.txt"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3824
        • C:\Program Files\Java\jre-1.8\bin\java.exe
          "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\aenqqlavm.txt"
          4⤵
          • Drops startup file
          • Loads dropped DLL
          • Adds Run key to start application
          • Suspicious use of WriteProcessMemory
          PID:2672
          • C:\Windows\SYSTEM32\cmd.exe
            cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\aenqqlavm.txt"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4476
            • C:\Windows\system32\schtasks.exe
              schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\aenqqlavm.txt"
              6⤵
              • Creates scheduled task(s)
              PID:4700
          • 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\aenqqlavm.txt"
            5⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:4924
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4752
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
                7⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:4240
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:3260
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
                7⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:4348
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:5036
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
                7⤵
                  PID:4104
              • C:\Windows\SYSTEM32\cmd.exe
                cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:3708
                • C:\Windows\System32\Wbem\WMIC.exe
                  wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
                  7⤵
                    PID:4028
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4152,i,6166776566165096562,4582328833313060853,262144 --variations-seed-version --mojo-platform-channel-handle=4172 /prefetch:8
        1⤵
          PID:5060

        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 3c4c02a63977cfaf7e104213649ba68b3fea002968f2ea95a9ca6afc0bad794d
              • MD5 SHA1 SHA512

              3903daac9bc4a3b7.timestamp

              • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
              • Size 46B
              • SHA256 378c1e406a39252af1172ca174cda9e2d16c49ab4834435542e7f1a2d144ab10
              • MD5 SHA1 SHA512

              jna1395007717244318622.dll

              • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna1395007717244318622.dll
              • Size 241KB
              • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
              • MD5 SHA1 SHA512 SSDEEP

              83aa4cc77f591dfc2374580bbd95f6ba_d2547453-e731-4fdf-8f92-95f955a44aca

              • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1181767204-2009306918-3718769404-1000\83aa4cc77f591dfc2374580bbd95f6ba_d2547453-e731-4fdf-8f92-95f955a44aca
              • Size 45B
              • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
              • MD5 SHA1 SHA512

              aenqqlavm.txt

              • Path C:\Users\Admin\AppData\Roaming\aenqqlavm.txt
              • Size 92KB
              • SHA256 943a982c65ebf476f6f454a95e4f8105f6c89d3e90d638113f718a208aa51db0
              • 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

              pzsjuirnnn.js

              • Path C:\Users\Admin\pzsjuirnnn.js
              • Size 204KB
              • SHA256 1d10f4534674ce86f17ec22da471f3d472da1f6a15348238e4e289f0e0e4c0e0
              • MD5 SHA1 SHA512 SSDEEP

              memory/2672-150-0x0000022407BD0000-0x0000022407BD1000-memory.dmp

              memory/2672-135-0x0000022407BD0000-0x0000022407BD1000-memory.dmp

              memory/3824-21-0x00007FFFAFF90000-0x00007FFFB0185000-memory.dmp

              memory/3824-102-0x00007FFFAFF90000-0x00007FFFB0185000-memory.dmp

              memory/3824-101-0x0000015B82980000-0x0000015B82981000-memory.dmp

              memory/3824-94-0x0000015B82980000-0x0000015B82981000-memory.dmp

              memory/3824-80-0x0000015B82980000-0x0000015B82981000-memory.dmp

              memory/3824-76-0x0000015B82980000-0x0000015B82981000-memory.dmp

              memory/3824-73-0x0000015B82980000-0x0000015B82981000-memory.dmp

              memory/3824-46-0x0000015B82980000-0x0000015B82981000-memory.dmp

              memory/4924-176-0x000002EA75AF0000-0x000002EA75AF1000-memory.dmp

              memory/4924-194-0x000002EA75AF0000-0x000002EA75AF1000-memory.dmp

              memory/4988-2-0x00007FFFAFF90000-0x00007FFFB0185000-memory.dmp

              memory/4988-15-0x00007FFFAFF90000-0x00007FFFB0185000-memory.dmp

              memory/4988-14-0x000002A578840000-0x000002A578841000-memory.dmp