Analysis

  • max time kernel
    122s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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) 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\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2460
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2720
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2888
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 180
          4⤵
          • Program crash
          PID:2764

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Local\Temp\~TM9473.tmp

          Filesize

          1.2MB

          MD5

          d124f55b9393c976963407dff51ffa79

          SHA1

          2c7bbedd79791bfb866898c85b504186db610b5d

          SHA256

          ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

          SHA512

          278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

        • \Users\Admin\AppData\Local\Temp\~TM9510.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/2720-2-0x0000000010000000-0x000000001005A000-memory.dmp

          Filesize

          360KB

        • memory/2720-0-0x0000000010000000-0x000000001005A000-memory.dmp

          Filesize

          360KB

        • memory/2720-4-0x00000000001F0000-0x0000000000222000-memory.dmp

          Filesize

          200KB

        • memory/2720-25-0x00000000001F0000-0x00000000001F6000-memory.dmp

          Filesize

          24KB

        • memory/2888-11-0x0000000000400000-0x0000000000432000-memory.dmp

          Filesize

          200KB

        • memory/2888-13-0x0000000000220000-0x0000000000252000-memory.dmp

          Filesize

          200KB

        • memory/2888-16-0x0000000077B1F000-0x0000000077B21000-memory.dmp

          Filesize

          8KB

        • memory/2888-17-0x0000000077B20000-0x0000000077B21000-memory.dmp

          Filesize

          4KB

        • memory/2888-19-0x0000000077B20000-0x0000000077B22000-memory.dmp

          Filesize

          8KB

        • memory/2888-22-0x00000000775F0000-0x0000000077700000-memory.dmp

          Filesize

          1.1MB

        • memory/2888-23-0x0000000000400000-0x0000000000432000-memory.dmp

          Filesize

          200KB

        • memory/2888-24-0x00000000775F0000-0x0000000077700000-memory.dmp

          Filesize

          1.1MB