Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03/10/2024, 19:17

General

  • Target

    3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll

  • Size

    419KB

  • MD5

    171e15f3d37b54a44d4fde0e253a9fc0

  • SHA1

    03b02123a8d6816ed3ec55bb8f4aa4553918814d

  • SHA256

    3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6a

  • SHA512

    9c2fa167f6817cbd53836a383e3f34a7f6a810f48437eb9ac70470278eaf2818960bf2d94f3356ce3ee59f171fcc738de350bb2694cd52118b96989eeae3ea8f

  • SSDEEP

    3072:9oekxYHVyS9nXPZGULMgo9ae3LV1dKdLhtKeoVWh7VnSNFKsa0h6:jkCE0nXP4AvhM1sdLhtloVWNV6a0h6

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Drops file in System32 directory 1 IoCs
  • UPX packed file 2 IoCs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 5 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:2396
      • C:\Windows\SysWOW64\regsvr32mgr.exe
        C:\Windows\SysWOW64\regsvr32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2716
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 180
          4⤵
          • Program crash
          PID:2792

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Local\Temp\~TME4B4.tmp

          Filesize

          1.2MB

          MD5

          d124f55b9393c976963407dff51ffa79

          SHA1

          2c7bbedd79791bfb866898c85b504186db610b5d

          SHA256

          ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

          SHA512

          278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

        • \Users\Admin\AppData\Local\Temp\~TME4F3.tmp

          Filesize

          1.1MB

          MD5

          9b98d47916ead4f69ef51b56b0c2323c

          SHA1

          290a80b4ded0efc0fd00816f373fcea81a521330

          SHA256

          96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b

          SHA512

          68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

        • \Windows\SysWOW64\regsvr32mgr.exe

          Filesize

          354KB

          MD5

          a8245f71e4e4aff10e574300abd2bcc2

          SHA1

          7ea3ae53a0697e526c6bc877b103b390af042d7a

          SHA256

          7bf945e4d87567106bfe8980b4fe1e6482578ab91fa9d82426c804ae5c3f2546

          SHA512

          8c32f1f55c0475ce06ddbd3db80d529addb401089bd61491641d2e2c0c36020eabc5a947735388ae7a90514c543cb29450afa13b1e3f90387e432b62d4628978

        • memory/2396-1-0x0000000074500000-0x000000007456D000-memory.dmp

          Filesize

          436KB

        • memory/2396-9-0x0000000000280000-0x00000000002DC000-memory.dmp

          Filesize

          368KB

        • memory/2396-8-0x0000000000280000-0x00000000002DC000-memory.dmp

          Filesize

          368KB

        • memory/2716-11-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2716-18-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB