Analysis

  • max time kernel
    42s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    28-05-2022 02:26

General

  • Target

    02e1385fcb034399568d9f34e70537ef4da29c628a1e0abccdcf57571d69caa0.exe

  • Size

    943KB

  • MD5

    7d76846dc65ecfc757cc5f8ada1bd60d

  • SHA1

    871bf291b91b32f1b3ffadfd7e2c95280310e451

  • SHA256

    02e1385fcb034399568d9f34e70537ef4da29c628a1e0abccdcf57571d69caa0

  • SHA512

    66d738cfa72b1127c1ec9618977d5059fce7b514869f1de55831972fa2b3ccf3a0d4399ad8e7d7cecc222ae1a886a2ce6b7de80fd8b257c92c10513a2e339634

Malware Config

Signatures

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 22 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 36 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\02e1385fcb034399568d9f34e70537ef4da29c628a1e0abccdcf57571d69caa0.exe
    "C:\Users\Admin\AppData\Local\Temp\02e1385fcb034399568d9f34e70537ef4da29c628a1e0abccdcf57571d69caa0.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1180
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaPlayerV1\MediaPlayerV1alpha98\ie\MediaPlayerV1alpha98.dll" /s
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:2040
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:1960

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\MediaPlayerV1\MediaPlayerV1alpha98\ie\MediaPlayerV1alpha98.dll

      Filesize

      85KB

      MD5

      fc2a328b618dd721e4df06af8ae16ab8

      SHA1

      1db4d50870e2984beb237168411555f406f499ba

      SHA256

      24c9b08dd5167ee96e75a94db3e09abdbb682af7e4c70256b5bbc3e5b91d7a6b

      SHA512

      94140c5f5424e128eb9ebc10433ae62459924c25e7499676f38689823a7acfe62a4b3069bb2c3a16daaaba53610f9e3c0b2d147584a6973b92bc4f41f8cd3029

    • \Program Files (x86)\MediaPlayerV1\MediaPlayerV1alpha98\ie\MediaPlayerV1alpha98.dll

      Filesize

      85KB

      MD5

      fc2a328b618dd721e4df06af8ae16ab8

      SHA1

      1db4d50870e2984beb237168411555f406f499ba

      SHA256

      24c9b08dd5167ee96e75a94db3e09abdbb682af7e4c70256b5bbc3e5b91d7a6b

      SHA512

      94140c5f5424e128eb9ebc10433ae62459924c25e7499676f38689823a7acfe62a4b3069bb2c3a16daaaba53610f9e3c0b2d147584a6973b92bc4f41f8cd3029

    • \Users\Admin\AppData\Local\Temp\nsiF317.tmp\aminsis.dll

      Filesize

      834KB

      MD5

      14ad04243334645f399639b028f21d17

      SHA1

      7368866dc95621a1407d2105d040da2cc9852ba9

      SHA256

      02d13f28df1314640474ee77cd202a2c0da8e1d609c614f8fdff4451f8ee63fa

      SHA512

      3859b6f6e7e46ba70fa0be24fd2ceadf3db746818f11a09109c7bb678ee4fc08824a0cf15c77df09c3b2bdc2a80067a98130660152f5ee61e4bd501ef5ed1728

    • memory/1180-54-0x0000000076C81000-0x0000000076C83000-memory.dmp

      Filesize

      8KB

    • memory/1960-60-0x0000000000000000-mapping.dmp

    • memory/2040-56-0x0000000000000000-mapping.dmp