Resubmissions

05-09-2022 20:38

220905-zexc2shfa9 10

05-09-2022 20:34

220905-zcyhbsheg6 10

Analysis

  • max time kernel
    1732s
  • max time network
    1746s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-09-2022 20:38

General

  • Target

    server.exe

  • Size

    68KB

  • MD5

    a91a3c7dab07eebc283ae3fa1f3b7227

  • SHA1

    e88d92ef9354efa3c7f14e9a323e3c96bb2033ad

  • SHA256

    8c210c79c2b7c4ea35fa08d0c994a3ab26f50ee639c497f341b20da965cfbd1b

  • SHA512

    a74077b53023cdeff7fb6733e87ffe8f488b69be00d8ef027fdf935efaa79e5882e75956f01c6a94770b612ec0b39a2d8c08822c5f6dbecf956fadfad1f00e83

  • SSDEEP

    768:BCB8S+OR7dOahyoHokBtqN74W7bZZmYb9PyzcjRlYlwa6NVdkPnJJMIxV:BHJaAoHoc2x7bZoYBAcQlwJdMZ

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 7 IoCs
  • Drops file in System32 directory 4 IoCs
  • Suspicious use of WriteProcessMemory 4 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:2000
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
    1⤵
      PID:1620
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
      1⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1628
      • C:\Windows\SysWOW64\SRDSL.exe
        C:\Windows\system32\SRDSL.exe "c:\windows\system32\7072242.dll",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1576

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\SysWOW64\SRDSL.exe

      Filesize

      43KB

      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • C:\Windows\SysWOW64\SRDSL.exe

      Filesize

      43KB

      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • \??\c:\windows\SysWOW64\7072242.dll

      Filesize

      37KB

      MD5

      155fc1bc598f45bb07aa3eed4906bd63

      SHA1

      31ff0c1b9a8497cdafe493d3e31e912d44f77a2c

      SHA256

      4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918

      SHA512

      2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db

    • \Windows\SysWOW64\7072242.dll

      Filesize

      37KB

      MD5

      155fc1bc598f45bb07aa3eed4906bd63

      SHA1

      31ff0c1b9a8497cdafe493d3e31e912d44f77a2c

      SHA256

      4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918

      SHA512

      2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db

    • \Windows\SysWOW64\7072242.dll

      Filesize

      37KB

      MD5

      155fc1bc598f45bb07aa3eed4906bd63

      SHA1

      31ff0c1b9a8497cdafe493d3e31e912d44f77a2c

      SHA256

      4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918

      SHA512

      2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db

    • \Windows\SysWOW64\7072242.dll

      Filesize

      37KB

      MD5

      155fc1bc598f45bb07aa3eed4906bd63

      SHA1

      31ff0c1b9a8497cdafe493d3e31e912d44f77a2c

      SHA256

      4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918

      SHA512

      2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db

    • \Windows\SysWOW64\7072242.dll

      Filesize

      37KB

      MD5

      155fc1bc598f45bb07aa3eed4906bd63

      SHA1

      31ff0c1b9a8497cdafe493d3e31e912d44f77a2c

      SHA256

      4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918

      SHA512

      2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db

    • \Windows\SysWOW64\7072242.dll

      Filesize

      37KB

      MD5

      155fc1bc598f45bb07aa3eed4906bd63

      SHA1

      31ff0c1b9a8497cdafe493d3e31e912d44f77a2c

      SHA256

      4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918

      SHA512

      2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db

    • \Windows\SysWOW64\7072242.dll

      Filesize

      37KB

      MD5

      155fc1bc598f45bb07aa3eed4906bd63

      SHA1

      31ff0c1b9a8497cdafe493d3e31e912d44f77a2c

      SHA256

      4a8d43c608b29b0f9185fc75b61e7211a01cfdfeff690f284fe38d8303276918

      SHA512

      2aba669296dac9950d4a952010a314b6bca6e5e0bfcdd975249592c637166142739578ca97771aa3488a24f34ee9e6f1df1284b90f455bcf6a8f5cd9742d35db

    • \Windows\SysWOW64\SRDSL.exe

      Filesize

      43KB

      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • memory/1576-65-0x0000000000000000-mapping.dmp

    • memory/2000-54-0x0000000010000000-0x000000001000F000-memory.dmp

      Filesize

      60KB

    • memory/2000-60-0x0000000000250000-0x000000000025D000-memory.dmp

      Filesize

      52KB

    • memory/2000-58-0x0000000075501000-0x0000000075503000-memory.dmp

      Filesize

      8KB