Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/03/2024, 20:18

General

  • Target

    3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll

  • Size

    356KB

  • MD5

    beb87f3dbe2f6921ba90b7823c57e131

  • SHA1

    0c602edba024a68b042607323adfee52c38bd59c

  • SHA256

    3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd

  • SHA512

    91f004ab1adbea64c9201859b04c58e577bbb5dc5473f11fa562805a039fe8245be8781adb3289dac61d8cc5d072479dbb1d99f14e835eff9a8600c8c0e8d98b

  • SSDEEP

    3072:0fJChtSplyQNZhFx6fLSz1RNeyOb2EqMGzs4VlS0q0Ep:0hRHNrT6fLSz1RZOyEqMj4VlS0q0K

Malware Config

Signatures

  • Ramnit

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

  • UPX dump on OEP (original entry point) 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 1 IoCs

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

  • 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\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5092
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3136
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:3340
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3340 -s 540
          4⤵
          • Program crash
          PID:1232
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3340 -ip 3340
    1⤵
      PID:4732

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\~TM3141.tmp

            Filesize

            1.6MB

            MD5

            4f3387277ccbd6d1f21ac5c07fe4ca68

            SHA1

            e16506f662dc92023bf82def1d621497c8ab5890

            SHA256

            767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

            SHA512

            9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

          • C:\Windows\SysWOW64\rundll32mgr.exe

            Filesize

            157KB

            MD5

            2ad7467eeceedd64b8bd4f6e04c3cd49

            SHA1

            d6c5d9878dc49ae9b531d61283609e207154a921

            SHA256

            2aab17b2f18dfb70cd737b27b1a438ad8878889070a6e025b3684483054f60c9

            SHA512

            7a647d4a8de90d11cd5afb82ace8354869af0893f28afcf9491d1d4de421315d9a394a5d3462d88c0eff6c5a7a4ed41897d8d0498b59b4b7428ddbb61786be2a

          • memory/3136-4-0x0000000010000000-0x000000001005A000-memory.dmp

            Filesize

            360KB

          • memory/3340-5-0x0000000000400000-0x0000000000432000-memory.dmp

            Filesize

            200KB

          • memory/3340-7-0x0000000000400000-0x0000000000432000-memory.dmp

            Filesize

            200KB

          • memory/3340-8-0x00000000021D0000-0x0000000002202000-memory.dmp

            Filesize

            200KB

          • memory/3340-11-0x0000000077192000-0x0000000077193000-memory.dmp

            Filesize

            4KB

          • memory/3340-12-0x0000000077192000-0x0000000077193000-memory.dmp

            Filesize

            4KB

          • memory/3340-13-0x0000000077192000-0x0000000077194000-memory.dmp

            Filesize

            8KB