Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    11-02-2021 08:50

General

  • Target

    th520.exe

  • Size

    96KB

  • MD5

    fbbc4c6ce85624e7c35ce3f5ca988bbe

  • SHA1

    346102549e0c1f9604266f8bda9f2fbd9ddf216b

  • SHA256

    31d5bcd2e4ecd330a56fbef1826e7201532311c9a57ee44352a746ea8271a778

  • SHA512

    c3fc14a7bbdedc1cfbda01d0e624d0ea6384427828c6cbff415bb2d5da5363d930a456e979f371f45835305f40d4b2a0a190c2355b624e042c4035ca6a067ded

Malware Config

Signatures

  • RunningRat

    RunningRat is a remote access trojan first seen in 2018.

  • Executes dropped EXE 1 IoCs
  • Sets DLL path for service in the registry 2 TTPs
  • Loads dropped DLL 7 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\th520.exe
    "C:\Users\Admin\AppData\Local\Temp\th520.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    PID:528
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
    1⤵
      PID:1856
    • 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:1840
      • C:\Windows\SysWOW64\SRDSL.exe
        C:\Windows\system32\SRDSL.exe "c:\users\admin\appdata\local\temp\259288356.dll",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1288

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\SysWOW64\SRDSL.exe
      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • C:\Windows\SysWOW64\SRDSL.exe
      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • \??\c:\users\admin\appdata\local\temp\259288356.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • \Users\Admin\AppData\Local\Temp\259288356.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • \Users\Admin\AppData\Local\Temp\259288356.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • \Users\Admin\AppData\Local\Temp\259288356.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • \Users\Admin\AppData\Local\Temp\259288356.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • \Users\Admin\AppData\Local\Temp\259288356.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • \Users\Admin\AppData\Local\Temp\259288356.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • \Windows\SysWOW64\SRDSL.exe
      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • memory/528-2-0x0000000075D01000-0x0000000075D03000-memory.dmp
      Filesize

      8KB

    • memory/1288-7-0x0000000000000000-mapping.dmp