Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    04/02/2024, 16:23

General

  • Target

    VirusShare_6562d6e281850ba1684490ac9555280e.exe

  • Size

    657KB

  • MD5

    6562d6e281850ba1684490ac9555280e

  • SHA1

    7e685220921bf8f560f07f6efa06d65fe151c013

  • SHA256

    0f1f6c68c64cbfa3fb88e710df3ccfa29dbff60dba4cff4ad6ebe45ada76733d

  • SHA512

    a1521238de2b9ae11c942d63cea5cb57161373f70537877568cc423de99a82183aed16fc0ce9a873b00169cb411a9777b596042766625a506b54cbc2bc2b0802

  • SSDEEP

    12288:mEBGYuxVYG4GQTq4OaQQTYJ8eP4/L5uO7D3f5Bvq4qalQTSJ8ePt/t5uO7EU26qk:mEkYWYG4GQm4OaHYJ8eP4D5uOHBBS4qy

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 3 IoCs

    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).

  • 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\VirusShare_6562d6e281850ba1684490ac9555280e.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_6562d6e281850ba1684490ac9555280e.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:1984
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release663\ie\RichMediaViewV1release663.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:592
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:560

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nst87E6.tmp\aminsis.dll

            Filesize

            567KB

            MD5

            450753ad96785a240a39deccab3af0d0

            SHA1

            21c544064d2ffa6444508268ce258a330d459fc5

            SHA256

            1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

            SHA512

            c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab

          • \Program Files (x86)\RichMediaViewV1\RichMediaViewV1release663\ie\RichMediaViewV1release663.dll

            Filesize

            85KB

            MD5

            5ba84d8f7b5f9130650fe1a1eb96d9b4

            SHA1

            279139e03e6acd4d790d1048880ef3641a2f55b4

            SHA256

            7d2cc860259c82b78e8c32469577a3c20a32773372e5d60c2fe775edd701f87a

            SHA512

            c64d45a66e1464e83e864e596471c3652abf824c0b1707fa2ac0b18e8afa9110f1ea7468c1df0180c8626fe97a251e9ef3cdefada8dd7f9cdc7a5fd5e4ba7824