Resubmissions

19/01/2022, 03:59

220119-ekh3dsfaf9 10

19/01/2022, 03:53

220119-efq77sfbcn 4

Analysis

  • max time kernel
    147s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    19/01/2022, 03:59

General

  • Target

    Remittance_Advice.jar

  • Size

    177KB

  • MD5

    bc78ae9bc621453d40e716c9ba1e5477

  • SHA1

    1da930a525c2fcfc3aa3b19feedb982c76844711

  • SHA256

    4e0a3a091304f6c072eeb2605636e3dda2b187021218b0b9bbaba909568baaae

  • SHA512

    62e3139999e3be0b8afd95ec41d281d10436952ced1fb6357a5e3d73325144f7b87203f888a4711ed21733860fe3a29e43b5f84ac7097437673c524cda80f4b7

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 2 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 36 IoCs

Processes

  • C:\Windows\system32\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\Remittance_Advice.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1704
    • C:\Program Files\Java\jre7\bin\java.exe
      "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\Remittance_Advice.jar"
      2⤵
      • Drops startup file
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1384
      • C:\Windows\system32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Remittance_Advice.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1300
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Remittance_Advice.jar"
          4⤵
          • Creates scheduled task(s)
          PID:1828
      • C:\Program Files\Java\jre7\bin\java.exe
        "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\Remittance_Advice.jar"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1628
        • 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:1620
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:672
        • 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:432
          • 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:1980
        • 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:524
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:756
          • C:\Windows\system32\cmd.exe
            cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:564
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list
              5⤵
                PID:112

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • memory/1384-88-0x0000000000120000-0x0000000000121000-memory.dmp

              Filesize

              4KB

            • memory/1384-86-0x0000000000120000-0x0000000000121000-memory.dmp

              Filesize

              4KB

            • memory/1384-78-0x0000000000120000-0x0000000000121000-memory.dmp

              Filesize

              4KB

            • memory/1384-79-0x00000000021C0000-0x00000000051C0000-memory.dmp

              Filesize

              48.0MB

            • memory/1628-126-0x0000000000230000-0x0000000000231000-memory.dmp

              Filesize

              4KB

            • memory/1628-102-0x0000000000230000-0x0000000000231000-memory.dmp

              Filesize

              4KB

            • memory/1628-97-0x0000000000230000-0x0000000000231000-memory.dmp

              Filesize

              4KB

            • memory/1628-91-0x0000000001C30000-0x00000000050B0000-memory.dmp

              Filesize

              52.5MB

            • memory/1704-71-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB

            • memory/1704-68-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB

            • memory/1704-54-0x000007FEFC441000-0x000007FEFC443000-memory.dmp

              Filesize

              8KB

            • memory/1704-69-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB

            • memory/1704-72-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB

            • memory/1704-67-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB

            • memory/1704-65-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB

            • memory/1704-62-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB

            • memory/1704-61-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB

            • memory/1704-73-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB

            • memory/1704-56-0x00000000022F0000-0x00000000052F0000-memory.dmp

              Filesize

              48.0MB

            • memory/1704-74-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB

            • memory/1704-57-0x00000000001C0000-0x00000000001C1000-memory.dmp

              Filesize

              4KB