Analysis

  • max time kernel
    122s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    28-05-2022 05:00

General

  • Target

    025c447c0f204600a54c1aff651e87a08626c4a9590a1268d96bd75a36b2f3e7.exe

  • Size

    632KB

  • MD5

    1e2a52c7e2860fd3342ebc9d5f9bfcab

  • SHA1

    09316163284aac1f1d71376d560953394a1d0e92

  • SHA256

    025c447c0f204600a54c1aff651e87a08626c4a9590a1268d96bd75a36b2f3e7

  • SHA512

    d03d2607501c5d4eef047ce7b3dfc31e9215375e6d3573c88fbea7062570ea0389fa09302fc2dec171cbc6cac85dd7e46c2f84a4ca889166857931877977de93

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 6 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\025c447c0f204600a54c1aff651e87a08626c4a9590a1268d96bd75a36b2f3e7.exe
    "C:\Users\Admin\AppData\Local\Temp\025c447c0f204600a54c1aff651e87a08626c4a9590a1268d96bd75a36b2f3e7.exe"
    1⤵
    • Checks computer location settings
    • 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:1136
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha4562\ie\MediaViewV1alpha4562.dll" /s
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:460
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:2140
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:1960
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
        1⤵
          PID:492

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha4562\ie\MediaViewV1alpha4562.dll

          Filesize

          85KB

          MD5

          f417f54068b2be856319be630832d9ba

          SHA1

          ecb260ba280c322ab5ea23c303cfb9a86dd8e54c

          SHA256

          917730fccbff9fbf516825d2c0fc7607e6d4057b59dd313af84afdf63e2dc5cf

          SHA512

          72c26da879b9a4f612e5e934a123d045e5491dcb0f99f7007742eb6e34d34adb28be4d9f7720bc372040addb1231aaefe246705fe5d954c291385e81fb3036d7

        • C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha4562\ie\MediaViewV1alpha4562.dll

          Filesize

          85KB

          MD5

          f417f54068b2be856319be630832d9ba

          SHA1

          ecb260ba280c322ab5ea23c303cfb9a86dd8e54c

          SHA256

          917730fccbff9fbf516825d2c0fc7607e6d4057b59dd313af84afdf63e2dc5cf

          SHA512

          72c26da879b9a4f612e5e934a123d045e5491dcb0f99f7007742eb6e34d34adb28be4d9f7720bc372040addb1231aaefe246705fe5d954c291385e81fb3036d7

        • C:\Users\Admin\AppData\Local\Temp\nsrB348.tmp\aminsis.dll

          Filesize

          559KB

          MD5

          75fccc3ffe4fdeaa26b9098975ba3772

          SHA1

          9f04339adecad084b9696f757a8c12d3fd036be0

          SHA256

          71fd0603ba5bb405a0d134595c0d7f7d2ffd83bf1d083d4ccb6e7382f5bef81e

          SHA512

          bd3c65aa43b88dd3e1449180944d7dd6df3734fb1097117be4285b8b4bd72e7decf5e3e18e8a49b51b71b47b9ae9e444128dfeb1167a4b04a08dc220d314e3bd

        • memory/460-131-0x0000000000000000-mapping.dmp

        • memory/2140-134-0x0000000000000000-mapping.dmp