Analysis

  • max time kernel
    67s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 18:29

General

  • Target

    b6c0bf32db93c5469648f7a397822b576ab003e30e395f5ab601b3d0f7ae0fc1.dll

  • Size

    329KB

  • MD5

    0951a00d7e028b4d9e7710dcd4a6440b

  • SHA1

    760119ab49e160ad168063498ee4b5e11afea810

  • SHA256

    b6c0bf32db93c5469648f7a397822b576ab003e30e395f5ab601b3d0f7ae0fc1

  • SHA512

    6431fa3f55da35cdc2bd94ccf942887d5dbca962e0e33722f19205f4c501826171b6f445f485f56e566a83e091d6bf2f7e62ef650a919c753f523f534df741eb

  • SSDEEP

    6144:ACIGPj038tAgFMldsNX+Jxs3FrbFNq8l/covlAnH78sO5yJu:Fj038t/FMlds4g3tJNq8lEovlSH78r57

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Program crash 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6c0bf32db93c5469648f7a397822b576ab003e30e395f5ab601b3d0f7ae0fc1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2472
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6c0bf32db93c5469648f7a397822b576ab003e30e395f5ab601b3d0f7ae0fc1.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2448
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:4188
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4188 -s 376
          4⤵
          • Program crash
          PID:1060
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2448 -s 608
        3⤵
        • Program crash
        PID:1244
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2448 -ip 2448
    1⤵
      PID:4796
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4188 -ip 4188
      1⤵
        PID:4896

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\~TMEDB0.tmp

        Filesize

        1.6MB

        MD5

        4f3387277ccbd6d1f21ac5c07fe4ca68

        SHA1

        e16506f662dc92023bf82def1d621497c8ab5890

        SHA256

        767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

        SHA512

        9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

      • C:\Windows\SysWOW64\rundll32mgr.exe

        Filesize

        162KB

        MD5

        33cd65ebd943a41a3b65fa1ccfce067c

        SHA1

        715d78b89cadbbd517fec3a48f415e1dc00f92bb

        SHA256

        43c91f0a793c2776757ecec287a2d50cbf331d27f08aa559ffc160a417d3d1ae

        SHA512

        ea7c5b04eb5dd99ff38f7699cceef49680c094beab01751a92541e56293f7ecc3381aeca9a8863f95b75b548c0d02cf5127eaaf4cc1f784974981fade9ebeaf2

      • C:\Windows\SysWOW64\rundll32mgr.exe

        Filesize

        162KB

        MD5

        33cd65ebd943a41a3b65fa1ccfce067c

        SHA1

        715d78b89cadbbd517fec3a48f415e1dc00f92bb

        SHA256

        43c91f0a793c2776757ecec287a2d50cbf331d27f08aa559ffc160a417d3d1ae

        SHA512

        ea7c5b04eb5dd99ff38f7699cceef49680c094beab01751a92541e56293f7ecc3381aeca9a8863f95b75b548c0d02cf5127eaaf4cc1f784974981fade9ebeaf2

      • memory/2448-132-0x0000000000000000-mapping.dmp

      • memory/2448-137-0x0000000010000000-0x0000000010057000-memory.dmp

        Filesize

        348KB

      • memory/4188-133-0x0000000000000000-mapping.dmp

      • memory/4188-138-0x0000000000400000-0x0000000000489124-memory.dmp

        Filesize

        548KB

      • memory/4188-139-0x0000000077740000-0x00000000778E3000-memory.dmp

        Filesize

        1.6MB