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Analysis

  • max time kernel
    151s
  • max time network
    169s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2022, 13:42

General

  • Target

    0f0309189a66c7ee48c5fa63de03aed25ad502401fade571781639da99317756.dll

  • Size

    1.8MB

  • MD5

    017e565c52dadc79cd94f56c2796f00f

  • SHA1

    e3558fab45fb84ca4e09415607f0e52c3ffd9847

  • SHA256

    0f0309189a66c7ee48c5fa63de03aed25ad502401fade571781639da99317756

  • SHA512

    23de935fec4f11a2849b666ff664ef0b76c721a8ab48a5757c5690e6c149fe90d1d9ccd456783ac863e25b5d16d2b3fd1877481502c3ae5156d64e3c1c39e873

  • SSDEEP

    24576:o7IY7a9IRCRqRPkHQo411810cNScGKJydXTZDwmzRMo3DP7x5nbiQjyrEApAKUAx:oIY5RMHMf810Knor5zqo3zNJuQj8TUo

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 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f0309189a66c7ee48c5fa63de03aed25ad502401fade571781639da99317756.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4560
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f0309189a66c7ee48c5fa63de03aed25ad502401fade571781639da99317756.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:4740
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:4648
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4648 -s 10176
          4⤵
          • Program crash
          PID:1884
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4740 -s 640
        3⤵
        • Program crash
        PID:1616
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4740 -ip 4740
    1⤵
      PID:1368
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4648 -ip 4648
      1⤵
        PID:372

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\~TMA7AE.tmp

        Filesize

        1.6MB

        MD5

        4f3387277ccbd6d1f21ac5c07fe4ca68

        SHA1

        e16506f662dc92023bf82def1d621497c8ab5890

        SHA256

        767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

        SHA512

        9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

      • C:\Windows\SysWOW64\rundll32mgr.exe

        Filesize

        94KB

        MD5

        8b5f2036288762602f2916929b1ab9d8

        SHA1

        351a0157960c3b009a9814a6e8b7f788ba798988

        SHA256

        55751df54d8d54e5bb8edab83bd57fd599b2e9aa313233d6aa084cde167e6951

        SHA512

        41a45bd5ff492cf2a01ad156f763854b1d5371d1a41cee4cad977c4ff25a561c1b3fbb067463e2b7278ac6878af139ff7fd695bed1f5883516a70031e9758bc1

      • C:\Windows\SysWOW64\rundll32mgr.exe

        Filesize

        94KB

        MD5

        8b5f2036288762602f2916929b1ab9d8

        SHA1

        351a0157960c3b009a9814a6e8b7f788ba798988

        SHA256

        55751df54d8d54e5bb8edab83bd57fd599b2e9aa313233d6aa084cde167e6951

        SHA512

        41a45bd5ff492cf2a01ad156f763854b1d5371d1a41cee4cad977c4ff25a561c1b3fbb067463e2b7278ac6878af139ff7fd695bed1f5883516a70031e9758bc1

      • memory/4648-138-0x0000000000400000-0x0000000000444000-memory.dmp

        Filesize

        272KB

      • memory/4648-139-0x00000000006D0000-0x0000000000714000-memory.dmp

        Filesize

        272KB

      • memory/4648-140-0x0000000077440000-0x00000000775E3000-memory.dmp

        Filesize

        1.6MB

      • memory/4740-137-0x0000000010000000-0x0000000010362000-memory.dmp

        Filesize

        3.4MB