Analysis

  • max time kernel
    251s
  • max time network
    331s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    09/02/2023, 05:14

General

  • Target

    a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c.exe

  • Size

    700KB

  • MD5

    9fdcdb0fa8f559e1773109d50ab54b0d

  • SHA1

    66e1d6009c7b4edd623d66b455bdf5bc52e61319

  • SHA256

    a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c

  • SHA512

    05565111fdd4c9741f3636f41cb1ee05bde2e81f747b2c10817908651d4ba2d0b6a94fcfac020eb971dd2234d2f70ca95085d36230d12e6002f6fdbb94e8f767

  • SSDEEP

    12288:h2jDTUaAWxtWRg/2P9eLgo8CS0w95fBxk3q/FPzovClgiKREWwKc:h2jDwaZbg9eMo8pBumF6+gwsc

Score
8/10
upx

Malware Config

Signatures

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

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

  • 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 behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c.exe
    "C:\Users\Admin\AppData\Local\Temp\a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Modifies system certificate store
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:1512
    • C:\Users\Admin\AppData\Local\Temp\a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c.exe
      "C:\Users\Admin\AppData\Local\Temp\a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c.exe" --crash-reporter-parent-id=1512
      2⤵
        PID:580
      • C:\Users\Admin\AppData\Local\Temp\Opera Installer\a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c.exe
        "C:\Users\Admin\AppData\Local\Temp\Opera Installer\a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c.exe" --version
        2⤵
        • Executes dropped EXE
        PID:436
      • C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20230209061753.exe
        "C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20230209061753.exe" --internal-version
        2⤵
        • Executes dropped EXE
        PID:592
      • C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20230209061753.exe
        "C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20230209061753.exe" --stream
        2⤵
        • Executes dropped EXE
        PID:932

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Opera Installer\a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c.exe

      Filesize

      700KB

      MD5

      9fdcdb0fa8f559e1773109d50ab54b0d

      SHA1

      66e1d6009c7b4edd623d66b455bdf5bc52e61319

      SHA256

      a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c

      SHA512

      05565111fdd4c9741f3636f41cb1ee05bde2e81f747b2c10817908651d4ba2d0b6a94fcfac020eb971dd2234d2f70ca95085d36230d12e6002f6fdbb94e8f767

    • C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20230209061753.exe

      Filesize

      35.9MB

      MD5

      36f8b3bb2ba2194db065637af8bf4453

      SHA1

      1262df44dcc47e5a81f17e559252247f9f35b914

      SHA256

      ac4dfaed56f4a4259befff7471d8d297e3d5c13951aad6b64280830dd36d1724

      SHA512

      7c22d94fcb5cba4669d53929a73240879875c26cfa43bf9135c1772e024fe8991618150fa26550e89fdb5a40e6e642d80ab81c523dba29f441c1b389a9fc37c6

    • C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20230209061753.exe

      Filesize

      35.9MB

      MD5

      36f8b3bb2ba2194db065637af8bf4453

      SHA1

      1262df44dcc47e5a81f17e559252247f9f35b914

      SHA256

      ac4dfaed56f4a4259befff7471d8d297e3d5c13951aad6b64280830dd36d1724

      SHA512

      7c22d94fcb5cba4669d53929a73240879875c26cfa43bf9135c1772e024fe8991618150fa26550e89fdb5a40e6e642d80ab81c523dba29f441c1b389a9fc37c6

    • \Users\Admin\AppData\Local\Temp\Opera Installer\a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c.exe

      Filesize

      700KB

      MD5

      9fdcdb0fa8f559e1773109d50ab54b0d

      SHA1

      66e1d6009c7b4edd623d66b455bdf5bc52e61319

      SHA256

      a2daef1054702702973c9e05ecedba94d4ca28b4eb114c38cab5f04444336e3c

      SHA512

      05565111fdd4c9741f3636f41cb1ee05bde2e81f747b2c10817908651d4ba2d0b6a94fcfac020eb971dd2234d2f70ca95085d36230d12e6002f6fdbb94e8f767

    • \Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20230209061753.exe

      Filesize

      35.9MB

      MD5

      36f8b3bb2ba2194db065637af8bf4453

      SHA1

      1262df44dcc47e5a81f17e559252247f9f35b914

      SHA256

      ac4dfaed56f4a4259befff7471d8d297e3d5c13951aad6b64280830dd36d1724

      SHA512

      7c22d94fcb5cba4669d53929a73240879875c26cfa43bf9135c1772e024fe8991618150fa26550e89fdb5a40e6e642d80ab81c523dba29f441c1b389a9fc37c6

    • \Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20230209061753.exe

      Filesize

      35.9MB

      MD5

      36f8b3bb2ba2194db065637af8bf4453

      SHA1

      1262df44dcc47e5a81f17e559252247f9f35b914

      SHA256

      ac4dfaed56f4a4259befff7471d8d297e3d5c13951aad6b64280830dd36d1724

      SHA512

      7c22d94fcb5cba4669d53929a73240879875c26cfa43bf9135c1772e024fe8991618150fa26550e89fdb5a40e6e642d80ab81c523dba29f441c1b389a9fc37c6

    • memory/436-64-0x0000000000230000-0x000000000038B000-memory.dmp

      Filesize

      1.4MB

    • memory/580-67-0x0000000001180000-0x00000000012DB000-memory.dmp

      Filesize

      1.4MB

    • memory/1512-69-0x0000000001180000-0x00000000012DB000-memory.dmp

      Filesize

      1.4MB

    • memory/1512-59-0x0000000000100000-0x0000000000106000-memory.dmp

      Filesize

      24KB

    • memory/1512-70-0x0000000000D20000-0x0000000000E7B000-memory.dmp

      Filesize

      1.4MB

    • memory/1512-54-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

      Filesize

      8KB

    • memory/1512-68-0x0000000000D20000-0x0000000000E7B000-memory.dmp

      Filesize

      1.4MB

    • memory/1512-58-0x0000000000100000-0x0000000000106000-memory.dmp

      Filesize

      24KB

    • memory/1512-66-0x0000000000420000-0x000000000057B000-memory.dmp

      Filesize

      1.4MB

    • memory/1512-65-0x0000000001180000-0x00000000012DB000-memory.dmp

      Filesize

      1.4MB

    • memory/1512-57-0x0000000000100000-0x0000000000106000-memory.dmp

      Filesize

      24KB