Analysis

  • max time kernel
    4s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 18:42

General

  • Target

    dffb3f5725f3cc1322766b53b4fda64c830c7745e395a8b71926f9736fd877ae.dll

  • Size

    208KB

  • MD5

    441d8a1ea39645f6e91883627a84e3c0

  • SHA1

    a10b024b27f8ab2c1826db8dc2f52c1e3654b040

  • SHA256

    dffb3f5725f3cc1322766b53b4fda64c830c7745e395a8b71926f9736fd877ae

  • SHA512

    23212ec749f5e5f68399d7846c288ffe23d9fd7d39813edd9db83ec4a5b2e59ef39138588aa56c1de1d6bf9e3c01d3f0e98fd208cb7cae9ed854731be2bd01b8

  • SSDEEP

    3072:uvHDrpT7s0rsQQuYVqsxPj2UhbyQfQ5KoldqHbDTmcLRkA:qHDra0rTQswPjvFDfPoldqHbNB

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 4 IoCs
  • Drops file in System32 directory 1 IoCs
  • Program crash 1 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\dffb3f5725f3cc1322766b53b4fda64c830c7745e395a8b71926f9736fd877ae.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:940
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\dffb3f5725f3cc1322766b53b4fda64c830c7745e395a8b71926f9736fd877ae.dll
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1140
      • C:\Windows\SysWOW64\regsvr32mgr.exe
        C:\Windows\SysWOW64\regsvr32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:904
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 904 -s 148
          4⤵
          • Program crash
          PID:652

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\SysWOW64\regsvr32mgr.exe

    Filesize

    144KB

    MD5

    609c9eadac4c1cc48b5f89be6c36e276

    SHA1

    f047b565fdb73d5b75ffaed7b2faa335e82b3514

    SHA256

    e982967b3a8613149cd29d659a4b4aa6241ef8e4f124458785220e76e8b18325

    SHA512

    246dab455d7b7661126e79bb9b1b2aee2fee26790b8fde0779d529cfceb295b9df2fb5aca2da1ab3d52f22b4157a46ea8b164e7aa02e842aca2cd27076d85fb5

  • \Users\Admin\AppData\Local\Temp\~TM9FD9.tmp

    Filesize

    1.2MB

    MD5

    d124f55b9393c976963407dff51ffa79

    SHA1

    2c7bbedd79791bfb866898c85b504186db610b5d

    SHA256

    ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

    SHA512

    278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

  • \Users\Admin\AppData\Local\Temp\~TMA085.tmp

    Filesize

    1.1MB

    MD5

    9b98d47916ead4f69ef51b56b0c2323c

    SHA1

    290a80b4ded0efc0fd00816f373fcea81a521330

    SHA256

    96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b

    SHA512

    68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

  • \Windows\SysWOW64\regsvr32mgr.exe

    Filesize

    144KB

    MD5

    609c9eadac4c1cc48b5f89be6c36e276

    SHA1

    f047b565fdb73d5b75ffaed7b2faa335e82b3514

    SHA256

    e982967b3a8613149cd29d659a4b4aa6241ef8e4f124458785220e76e8b18325

    SHA512

    246dab455d7b7661126e79bb9b1b2aee2fee26790b8fde0779d529cfceb295b9df2fb5aca2da1ab3d52f22b4157a46ea8b164e7aa02e842aca2cd27076d85fb5

  • \Windows\SysWOW64\regsvr32mgr.exe

    Filesize

    144KB

    MD5

    609c9eadac4c1cc48b5f89be6c36e276

    SHA1

    f047b565fdb73d5b75ffaed7b2faa335e82b3514

    SHA256

    e982967b3a8613149cd29d659a4b4aa6241ef8e4f124458785220e76e8b18325

    SHA512

    246dab455d7b7661126e79bb9b1b2aee2fee26790b8fde0779d529cfceb295b9df2fb5aca2da1ab3d52f22b4157a46ea8b164e7aa02e842aca2cd27076d85fb5

  • memory/904-59-0x0000000000000000-mapping.dmp

  • memory/904-64-0x0000000000400000-0x0000000000451000-memory.dmp

    Filesize

    324KB

  • memory/904-65-0x0000000001B80000-0x0000000001BD1000-memory.dmp

    Filesize

    324KB

  • memory/904-66-0x0000000077090000-0x0000000077210000-memory.dmp

    Filesize

    1.5MB

  • memory/940-54-0x000007FEFB731000-0x000007FEFB733000-memory.dmp

    Filesize

    8KB

  • memory/1140-55-0x0000000000000000-mapping.dmp

  • memory/1140-56-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

    Filesize

    8KB