Analysis

  • max time kernel
    47s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    04/11/2022, 07:12

General

  • Target

    b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe

  • Size

    671KB

  • MD5

    3c90f4ff64bf3dbe5796f9efc644b003

  • SHA1

    01754640469b082c446753c83d6caf680e955573

  • SHA256

    b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1

  • SHA512

    3092d6f477ce4db8696389b608a698dcdfd617db58a1b54dd15c9f3e3012ffb875fc3700faa16c966d657a16b26373b0a371b5b56e3369c5ef28fa2ec8855e74

  • SSDEEP

    12288:VCuW+5P94e2ZJr85tFhDo2SwILq+n0trsXp/lzcJlFz39gd0FWYupymPgK2Sbw34:wuW+H4e2ZJrK6xLq+nwrstdcXFz39duN

Score
8/10
upx

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • UPX packed file 6 IoCs

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

  • Loads dropped DLL 3 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe
    "C:\Users\Admin\AppData\Local\Temp\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:860
    • C:\Users\Admin\AppData\Local\Temp\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe
      "C:\Users\Admin\AppData\Local\Temp\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe" --crash-reporter-parent-id=860
      2⤵
        PID:1228
      • C:\Users\Admin\AppData\Local\Temp\Opera Installer\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe
        "C:\Users\Admin\AppData\Local\Temp\Opera Installer\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe" --version
        2⤵
        • Executes dropped EXE
        PID:1736
      • C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104071259.exe
        "C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104071259.exe" --internal-version
        2⤵
        • Executes dropped EXE
        PID:1576
      • C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104071259.exe
        "C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104071259.exe" --stream
        2⤵
        • Executes dropped EXE
        PID:640

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\Opera Installer\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe

            Filesize

            671KB

            MD5

            3c90f4ff64bf3dbe5796f9efc644b003

            SHA1

            01754640469b082c446753c83d6caf680e955573

            SHA256

            b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1

            SHA512

            3092d6f477ce4db8696389b608a698dcdfd617db58a1b54dd15c9f3e3012ffb875fc3700faa16c966d657a16b26373b0a371b5b56e3369c5ef28fa2ec8855e74

          • C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104071259.exe

            Filesize

            35.9MB

            MD5

            36f8b3bb2ba2194db065637af8bf4453

            SHA1

            1262df44dcc47e5a81f17e559252247f9f35b914

            SHA256

            ac4dfaed56f4a4259befff7471d8d297e3d5c13951aad6b64280830dd36d1724

            SHA512

            7c22d94fcb5cba4669d53929a73240879875c26cfa43bf9135c1772e024fe8991618150fa26550e89fdb5a40e6e642d80ab81c523dba29f441c1b389a9fc37c6

          • C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104071259.exe

            Filesize

            35.9MB

            MD5

            36f8b3bb2ba2194db065637af8bf4453

            SHA1

            1262df44dcc47e5a81f17e559252247f9f35b914

            SHA256

            ac4dfaed56f4a4259befff7471d8d297e3d5c13951aad6b64280830dd36d1724

            SHA512

            7c22d94fcb5cba4669d53929a73240879875c26cfa43bf9135c1772e024fe8991618150fa26550e89fdb5a40e6e642d80ab81c523dba29f441c1b389a9fc37c6

          • \Users\Admin\AppData\Local\Temp\Opera Installer\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe

            Filesize

            671KB

            MD5

            3c90f4ff64bf3dbe5796f9efc644b003

            SHA1

            01754640469b082c446753c83d6caf680e955573

            SHA256

            b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1

            SHA512

            3092d6f477ce4db8696389b608a698dcdfd617db58a1b54dd15c9f3e3012ffb875fc3700faa16c966d657a16b26373b0a371b5b56e3369c5ef28fa2ec8855e74

          • \Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104071259.exe

            Filesize

            35.9MB

            MD5

            36f8b3bb2ba2194db065637af8bf4453

            SHA1

            1262df44dcc47e5a81f17e559252247f9f35b914

            SHA256

            ac4dfaed56f4a4259befff7471d8d297e3d5c13951aad6b64280830dd36d1724

            SHA512

            7c22d94fcb5cba4669d53929a73240879875c26cfa43bf9135c1772e024fe8991618150fa26550e89fdb5a40e6e642d80ab81c523dba29f441c1b389a9fc37c6

          • \Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104071259.exe

            Filesize

            35.9MB

            MD5

            36f8b3bb2ba2194db065637af8bf4453

            SHA1

            1262df44dcc47e5a81f17e559252247f9f35b914

            SHA256

            ac4dfaed56f4a4259befff7471d8d297e3d5c13951aad6b64280830dd36d1724

            SHA512

            7c22d94fcb5cba4669d53929a73240879875c26cfa43bf9135c1772e024fe8991618150fa26550e89fdb5a40e6e642d80ab81c523dba29f441c1b389a9fc37c6

          • memory/860-66-0x0000000001FA0000-0x00000000020EB000-memory.dmp

            Filesize

            1.3MB

          • memory/860-65-0x0000000000A50000-0x0000000000B9B000-memory.dmp

            Filesize

            1.3MB

          • memory/860-54-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

            Filesize

            8KB

          • memory/860-59-0x00000000000D0000-0x00000000000D6000-memory.dmp

            Filesize

            24KB

          • memory/860-72-0x0000000000A50000-0x0000000000B9B000-memory.dmp

            Filesize

            1.3MB

          • memory/860-73-0x0000000002810000-0x000000000295B000-memory.dmp

            Filesize

            1.3MB

          • memory/860-58-0x00000000000D0000-0x00000000000D6000-memory.dmp

            Filesize

            24KB

          • memory/860-57-0x00000000000D0000-0x00000000000D6000-memory.dmp

            Filesize

            24KB

          • memory/1228-67-0x0000000000A50000-0x0000000000B9B000-memory.dmp

            Filesize

            1.3MB

          • memory/1736-64-0x0000000001250000-0x000000000139B000-memory.dmp

            Filesize

            1.3MB