Analysis

  • max time kernel
    146s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-08-2022 20:36

General

  • Target

    server.exe

  • Size

    68KB

  • MD5

    b6e11c84a80412f8cb7330ab9fcc149e

  • SHA1

    266266241adc1907f2e6d8d1d15f8aeff89deb78

  • SHA256

    3cda160efdccaa80d566e2161b0e0d1541a9cb8d282d7636093e6e249235c1b3

  • SHA512

    f6a68c18e662dabdd9fa1e1eb8b92e91642fda4dae7fda4847b37b9e2408d97e45996cae14b6c0afc4c8068c18e2f945f4c0c0726c4b4009876636a4dbb46784

Malware Config

Signatures

  • RunningRat

    RunningRat is a remote access trojan first seen in 2018.

  • RunningRat payload 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Drops file in System32 directory 3 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\server.exe
    "C:\Users\Admin\AppData\Local\Temp\server.exe"
    1⤵
    • Sets DLL path for service in the registry
    • Loads dropped DLL
    • Drops file in System32 directory
    PID:4016
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "NETSRDSLS"
    1⤵
      PID:5092
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k "NETSRDSLS"
      1⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:5016
      • C:\Windows\SysWOW64\NETSRDSLS.exe
        C:\Windows\system32\NETSRDSLS.exe "c:\users\admin\appdata\local\temp\240562515.dll",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:808

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\240562515.dll

      Filesize

      37KB

      MD5

      efb245b9ecee514779529b298b28d0e4

      SHA1

      fbc99bf7855536f53d5475aa587f3a5669df11f4

      SHA256

      d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9

      SHA512

      23331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556

    • C:\Users\Admin\AppData\Local\Temp\240562515.dll

      Filesize

      37KB

      MD5

      efb245b9ecee514779529b298b28d0e4

      SHA1

      fbc99bf7855536f53d5475aa587f3a5669df11f4

      SHA256

      d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9

      SHA512

      23331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556

    • C:\Users\Admin\AppData\Local\Temp\240562515.dll

      Filesize

      37KB

      MD5

      efb245b9ecee514779529b298b28d0e4

      SHA1

      fbc99bf7855536f53d5475aa587f3a5669df11f4

      SHA256

      d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9

      SHA512

      23331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556

    • C:\Users\Admin\AppData\Local\Temp\240562515.dll

      Filesize

      37KB

      MD5

      efb245b9ecee514779529b298b28d0e4

      SHA1

      fbc99bf7855536f53d5475aa587f3a5669df11f4

      SHA256

      d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9

      SHA512

      23331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556

    • C:\Windows\SysWOW64\NETSRDSLS.exe

      Filesize

      60KB

      MD5

      889b99c52a60dd49227c5e485a016679

      SHA1

      8fa889e456aa646a4d0a4349977430ce5fa5e2d7

      SHA256

      6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

      SHA512

      08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

    • C:\Windows\SysWOW64\NETSRDSLS.exe

      Filesize

      60KB

      MD5

      889b99c52a60dd49227c5e485a016679

      SHA1

      8fa889e456aa646a4d0a4349977430ce5fa5e2d7

      SHA256

      6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

      SHA512

      08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

    • \??\c:\users\admin\appdata\local\temp\240562515.dll

      Filesize

      37KB

      MD5

      efb245b9ecee514779529b298b28d0e4

      SHA1

      fbc99bf7855536f53d5475aa587f3a5669df11f4

      SHA256

      d935a3ea157a822d3e5f06af7aa3b7112634984a38c7314577e6d75905bca5e9

      SHA512

      23331f00547b192aed5462dcf62ca93f2ebe0f653af4c5775e76888adeb41c7263c3c00317cf74fc4e3dde2b2bbb1d178d5b749102bc4a39e789f666d0154556

    • memory/808-141-0x0000000000000000-mapping.dmp

    • memory/4016-132-0x0000000010000000-0x000000001000F000-memory.dmp

      Filesize

      60KB

    • memory/4016-138-0x00000000006E0000-0x00000000006ED000-memory.dmp

      Filesize

      52KB