Analysis

  • max time kernel
    122s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    29/03/2024, 22:57

General

  • Target

    86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll

  • Size

    348KB

  • MD5

    aef998d9264fb3854bc677b69ea2c036

  • SHA1

    3eb134a014c0bcc9edbfda27103b4dff13dd34ec

  • SHA256

    86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f

  • SHA512

    80a9d44c5989c53b43f5c35a033f6e4a4795c5a40336ffdc4e7759bb0b775f834e6bcd8186d6d13dcdf78c501e9fe0dd23ff1ecd84651c33a79d07b9419b3494

  • SSDEEP

    3072:cfRBoFWlyQNZhFGVl4LSz1RNeyOb2EqMGzs4VlS0q0Ebs:cpdHNr4Vl4LSz1RZOyEqMj4VlS0q0ks

Malware Config

Signatures

  • Ramnit

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

  • UPX dump on OEP (original entry point) 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • UPX packed file 2 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 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1508
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1852
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2180
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2180 -s 180
          4⤵
          • Program crash
          PID:2604

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Local\Temp\~TM1268.tmp

          Filesize

          1.2MB

          MD5

          d124f55b9393c976963407dff51ffa79

          SHA1

          2c7bbedd79791bfb866898c85b504186db610b5d

          SHA256

          ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

          SHA512

          278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

        • \Users\Admin\AppData\Local\Temp\~TM1298.tmp

          Filesize

          1.1MB

          MD5

          9b98d47916ead4f69ef51b56b0c2323c

          SHA1

          290a80b4ded0efc0fd00816f373fcea81a521330

          SHA256

          96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b

          SHA512

          68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

        • \Windows\SysWOW64\rundll32mgr.exe

          Filesize

          157KB

          MD5

          2ad7467eeceedd64b8bd4f6e04c3cd49

          SHA1

          d6c5d9878dc49ae9b531d61283609e207154a921

          SHA256

          2aab17b2f18dfb70cd737b27b1a438ad8878889070a6e025b3684483054f60c9

          SHA512

          7a647d4a8de90d11cd5afb82ace8354869af0893f28afcf9491d1d4de421315d9a394a5d3462d88c0eff6c5a7a4ed41897d8d0498b59b4b7428ddbb61786be2a

        • memory/1852-3-0x0000000000400000-0x0000000000432000-memory.dmp

          Filesize

          200KB

        • memory/1852-2-0x0000000010000000-0x0000000010057000-memory.dmp

          Filesize

          348KB

        • memory/1852-10-0x0000000000400000-0x0000000000432000-memory.dmp

          Filesize

          200KB

        • memory/2180-20-0x00000000778C0000-0x00000000778C2000-memory.dmp

          Filesize

          8KB

        • memory/2180-11-0x0000000000400000-0x0000000000432000-memory.dmp

          Filesize

          200KB

        • memory/2180-12-0x00000000003C0000-0x00000000003F2000-memory.dmp

          Filesize

          200KB

        • memory/2180-19-0x00000000778C0000-0x00000000778C1000-memory.dmp

          Filesize

          4KB

        • memory/2180-18-0x00000000778BF000-0x00000000778C1000-memory.dmp

          Filesize

          8KB

        • memory/2180-14-0x0000000000400000-0x0000000000432000-memory.dmp

          Filesize

          200KB

        • memory/2180-25-0x0000000000400000-0x0000000000432000-memory.dmp

          Filesize

          200KB

        • memory/2180-24-0x0000000076900000-0x0000000076A10000-memory.dmp

          Filesize

          1.1MB

        • memory/2180-23-0x0000000076900000-0x0000000076A10000-memory.dmp

          Filesize

          1.1MB

        • memory/2180-26-0x0000000076900000-0x0000000076A10000-memory.dmp

          Filesize

          1.1MB