Analysis

  • max time kernel
    170s
  • max time network
    189s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-11-2022 07:38

General

  • Target

    dc8aca4d119393a7b381db7c10258f2392d467a2e2cc7942491e2856c475c713.dll

  • Size

    212KB

  • MD5

    0882599e9930b04f02092fcc6e2c9374

  • SHA1

    5caa7ab024e1324e47a30596dcb07cfc5909670b

  • SHA256

    dc8aca4d119393a7b381db7c10258f2392d467a2e2cc7942491e2856c475c713

  • SHA512

    ac4d77837b1fa84e28afda29f8d70bf2613c5842755ae1aa9f486396acd19e78afb0c86d678e89666f1b3e9010aee9cf05ba09e97ec1de46e0dc55f13fc9e495

  • SSDEEP

    3072:wgKKuiX63bw5dNjDh8pWVgTlFIYaLIR9cMrnZMu6VsmdytsLTMkDYfkXUBc9gLl:hKZp3KNjVGvaLIRJTj6Cmdyt6PXTA

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\dc8aca4d119393a7b381db7c10258f2392d467a2e2cc7942491e2856c475c713.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4672
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\dc8aca4d119393a7b381db7c10258f2392d467a2e2cc7942491e2856c475c713.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:4656
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1016
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1016 -s 10180
          4⤵
          • Program crash
          PID:4332
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 1016 -ip 1016
    1⤵
      PID:4744

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\~TMFA62.tmp

      Filesize

      1.6MB

      MD5

      4f3387277ccbd6d1f21ac5c07fe4ca68

      SHA1

      e16506f662dc92023bf82def1d621497c8ab5890

      SHA256

      767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

      SHA512

      9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

    • C:\Windows\SysWOW64\rundll32mgr.exe

      Filesize

      94KB

      MD5

      8abf6898662a995642dd979ff1fe5eef

      SHA1

      08aeda19120993801a6f3a8aa2b73b559ed361ad

      SHA256

      8aa6d0613c1ad6326d92678bc90dd10be1fba7a5b5f9d7a4a6fac6a42baf94cb

      SHA512

      a1e88bde3478d8a0c74824998b13e1fdf4484eec444540352076acc43675ecd2daed86e719b3889e7e8ce2104b2b7259a237b42d474acbca8f7e7fb3f37a3313

    • C:\Windows\SysWOW64\rundll32mgr.exe

      Filesize

      94KB

      MD5

      8abf6898662a995642dd979ff1fe5eef

      SHA1

      08aeda19120993801a6f3a8aa2b73b559ed361ad

      SHA256

      8aa6d0613c1ad6326d92678bc90dd10be1fba7a5b5f9d7a4a6fac6a42baf94cb

      SHA512

      a1e88bde3478d8a0c74824998b13e1fdf4484eec444540352076acc43675ecd2daed86e719b3889e7e8ce2104b2b7259a237b42d474acbca8f7e7fb3f37a3313

    • memory/1016-138-0x0000000002050000-0x0000000002093000-memory.dmp

      Filesize

      268KB

    • memory/1016-139-0x0000000000400000-0x0000000000443000-memory.dmp

      Filesize

      268KB

    • memory/1016-140-0x00000000775D0000-0x0000000077773000-memory.dmp

      Filesize

      1.6MB

    • memory/4656-133-0x0000000010000000-0x0000000010037000-memory.dmp

      Filesize

      220KB