Analysis

  • max time kernel
    149s
  • 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
    05-09-2022 18:42

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 4 IoCs
  • Drops file in System32 directory 4 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:4900
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
    1⤵
      PID:1064
    • 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:2280
      • C:\Windows\SysWOW64\SRDSL.exe
        C:\Windows\system32\SRDSL.exe "c:\windows\system32\240566296.dll",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1744

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\SysWOW64\240566296.dll

      Filesize

      37KB

      MD5

      b532f0aee1e82cd3da3442f49d82bc42

      SHA1

      a3de63c481c80c963a0b1638c0f6a8ad782fe240

      SHA256

      f581efc193c4bab4133297451fb1f04649e3861def449e282321bc312d0323fc

      SHA512

      be6dcc90020b7291a70ee35392b5264d9fb040a567286524a158e058d67b6492128c7ae47d9a3e406f41f784488bb8bd9c3a4440b805aa5989172a0ee4e3ba92

    • C:\Windows\SysWOW64\240566296.dll

      Filesize

      37KB

      MD5

      b532f0aee1e82cd3da3442f49d82bc42

      SHA1

      a3de63c481c80c963a0b1638c0f6a8ad782fe240

      SHA256

      f581efc193c4bab4133297451fb1f04649e3861def449e282321bc312d0323fc

      SHA512

      be6dcc90020b7291a70ee35392b5264d9fb040a567286524a158e058d67b6492128c7ae47d9a3e406f41f784488bb8bd9c3a4440b805aa5989172a0ee4e3ba92

    • C:\Windows\SysWOW64\240566296.dll

      Filesize

      37KB

      MD5

      b532f0aee1e82cd3da3442f49d82bc42

      SHA1

      a3de63c481c80c963a0b1638c0f6a8ad782fe240

      SHA256

      f581efc193c4bab4133297451fb1f04649e3861def449e282321bc312d0323fc

      SHA512

      be6dcc90020b7291a70ee35392b5264d9fb040a567286524a158e058d67b6492128c7ae47d9a3e406f41f784488bb8bd9c3a4440b805aa5989172a0ee4e3ba92

    • C:\Windows\SysWOW64\240566296.dll

      Filesize

      37KB

      MD5

      b532f0aee1e82cd3da3442f49d82bc42

      SHA1

      a3de63c481c80c963a0b1638c0f6a8ad782fe240

      SHA256

      f581efc193c4bab4133297451fb1f04649e3861def449e282321bc312d0323fc

      SHA512

      be6dcc90020b7291a70ee35392b5264d9fb040a567286524a158e058d67b6492128c7ae47d9a3e406f41f784488bb8bd9c3a4440b805aa5989172a0ee4e3ba92

    • C:\Windows\SysWOW64\SRDSL.exe

      Filesize

      60KB

      MD5

      889b99c52a60dd49227c5e485a016679

      SHA1

      8fa889e456aa646a4d0a4349977430ce5fa5e2d7

      SHA256

      6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

      SHA512

      08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

    • C:\Windows\SysWOW64\SRDSL.exe

      Filesize

      60KB

      MD5

      889b99c52a60dd49227c5e485a016679

      SHA1

      8fa889e456aa646a4d0a4349977430ce5fa5e2d7

      SHA256

      6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

      SHA512

      08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

    • \??\c:\windows\SysWOW64\240566296.dll

      Filesize

      37KB

      MD5

      b532f0aee1e82cd3da3442f49d82bc42

      SHA1

      a3de63c481c80c963a0b1638c0f6a8ad782fe240

      SHA256

      f581efc193c4bab4133297451fb1f04649e3861def449e282321bc312d0323fc

      SHA512

      be6dcc90020b7291a70ee35392b5264d9fb040a567286524a158e058d67b6492128c7ae47d9a3e406f41f784488bb8bd9c3a4440b805aa5989172a0ee4e3ba92

    • memory/1744-141-0x0000000000000000-mapping.dmp

    • memory/4900-132-0x0000000010000000-0x000000001000F000-memory.dmp

      Filesize

      60KB

    • memory/4900-138-0x00000000007E0000-0x00000000007ED000-memory.dmp

      Filesize

      52KB