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Analysis

  • max time kernel
    90s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2022, 13:26

General

  • Target

    d22a89c5a7013815f32dd0b14d2af2bbf39c75776611476197a201586c0184b1.dll

  • Size

    148KB

  • MD5

    5e4d5b45b83a9ab9e9f5cd08795ea46f

  • SHA1

    a57a953861e5af5892e151e34c8091cfc94354bc

  • SHA256

    d22a89c5a7013815f32dd0b14d2af2bbf39c75776611476197a201586c0184b1

  • SHA512

    cb4de9fc72db04766c64b5c4428c2d87c0ff1c5c380682140c40d7f2877eb291cd14a7c8ba016b226557d7d6c25669395e76e34d7235a3681381a9530766e3e7

  • SSDEEP

    3072:235TQRLOyPfmwGpEyL1jPtxqgP2QA+ctjHMdkFR:yKN3mwgLZtEgP2QZcxMu

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\d22a89c5a7013815f32dd0b14d2af2bbf39c75776611476197a201586c0184b1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2808
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\d22a89c5a7013815f32dd0b14d2af2bbf39c75776611476197a201586c0184b1.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2280
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1456
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 10168
          4⤵
          • Program crash
          PID:1812
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1456 -ip 1456
    1⤵
      PID:1096

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\~TMB5D7.tmp

      Filesize

      1.6MB

      MD5

      4f3387277ccbd6d1f21ac5c07fe4ca68

      SHA1

      e16506f662dc92023bf82def1d621497c8ab5890

      SHA256

      767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

      SHA512

      9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

    • C:\Windows\SysWOW64\rundll32mgr.exe

      Filesize

      97KB

      MD5

      ef5dc2521333fb418bd5518f1db3fd08

      SHA1

      3d5e8d6dbf09a599f674fe9d6c1d736b0c31cb70

      SHA256

      75bfc7c1f54f2579541c35f721a6bbd9083c7208bd989624ceb25f16bd03afbe

      SHA512

      8768e95f5539dc61350f552d575c683e20e000f41283701c9c5f393da40975a02a7d432374c72565f3e1848266ee94e20d905f62b849f91f3c956b7980d87882

    • C:\Windows\SysWOW64\rundll32mgr.exe

      Filesize

      97KB

      MD5

      ef5dc2521333fb418bd5518f1db3fd08

      SHA1

      3d5e8d6dbf09a599f674fe9d6c1d736b0c31cb70

      SHA256

      75bfc7c1f54f2579541c35f721a6bbd9083c7208bd989624ceb25f16bd03afbe

      SHA512

      8768e95f5539dc61350f552d575c683e20e000f41283701c9c5f393da40975a02a7d432374c72565f3e1848266ee94e20d905f62b849f91f3c956b7980d87882

    • memory/1456-137-0x0000000000400000-0x000000000042C1D8-memory.dmp

      Filesize

      176KB

    • memory/1456-138-0x0000000002020000-0x000000000204D000-memory.dmp

      Filesize

      180KB

    • memory/1456-140-0x00000000776F0000-0x0000000077893000-memory.dmp

      Filesize

      1.6MB

    • memory/1456-141-0x0000000000400000-0x000000000042C1D8-memory.dmp

      Filesize

      176KB

    • memory/1456-142-0x0000000002020000-0x000000000204D000-memory.dmp

      Filesize

      180KB

    • memory/2280-136-0x0000000050900000-0x0000000050928000-memory.dmp

      Filesize

      160KB