Analysis

  • max time kernel
    149s
  • max time network
    124s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • 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 3 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 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:1148
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
    1⤵
      PID:2504
    • 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:2692
      • C:\Windows\SysWOW64\SRDSL.exe
        C:\Windows\system32\SRDSL.exe "c:\users\admin\appdata\local\temp\259277625.dll",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1956

    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

      f57886ace1ab4972b0308f69b1a0029c

      SHA1

      519b2a981cb522ed2b0901f9871f9aa9781a6cd5

      SHA256

      2be981b3686ee5e725583f5936f5f0a0992723cad784457f91d9d1d5a15a0852

      SHA512

      c2b3f016a8c3993771cd5709e469c9dedfa1dd35047691de5e853e2ad0ac025ec210fc6cb662c82d08f62e2c889e5060e796414a4eaf6a6c1719cdd7e5debdf8

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

      f57886ace1ab4972b0308f69b1a0029c

      SHA1

      519b2a981cb522ed2b0901f9871f9aa9781a6cd5

      SHA256

      2be981b3686ee5e725583f5936f5f0a0992723cad784457f91d9d1d5a15a0852

      SHA512

      c2b3f016a8c3993771cd5709e469c9dedfa1dd35047691de5e853e2ad0ac025ec210fc6cb662c82d08f62e2c889e5060e796414a4eaf6a6c1719cdd7e5debdf8

    • \??\c:\users\admin\appdata\local\temp\259277625.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • \Users\Admin\AppData\Local\Temp\259277625.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • \Users\Admin\AppData\Local\Temp\259277625.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • \Users\Admin\AppData\Local\Temp\259277625.dll
      MD5

      61812d6eedf71873a467d58a433a978c

      SHA1

      967027fae0d90dd17186efff5c43115176c4caa2

      SHA256

      a497b74dcf8b25bae715a0c9307aa8c89047556b6955b4e76a2339a624a21655

      SHA512

      b8aa174bd88f2aae0e399bd9cd9f76671b2bf05f773646c60662fb030e51dc7cd174d71bf0e486daf0a93b5b3824437ed47e7380616ebaa6f9ca5c484207f0f0

    • memory/1956-5-0x0000000000000000-mapping.dmp