Analysis

  • max time kernel
    82s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    28-05-2022 02:30

General

  • Target

    02dcb1861a5a0f80902ff17bf6bb525f2cd2ce91c6880ae4e65bbebdc6437479.exe

  • Size

    632KB

  • MD5

    700b9e38b4fc30730737e60b2a2a20b8

  • SHA1

    d5494ef42b6253e45d5e2285ac762528e676749e

  • SHA256

    02dcb1861a5a0f80902ff17bf6bb525f2cd2ce91c6880ae4e65bbebdc6437479

  • SHA512

    67726bf82ca979785a150d14515f994e3ffc8404f5e7d036acf725e1357c55b5d413d91c505a78608266f153a2d3db60ae15e75f6dc987de3766993dd8b05b8c

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\02dcb1861a5a0f80902ff17bf6bb525f2cd2ce91c6880ae4e65bbebdc6437479.exe
    "C:\Users\Admin\AppData\Local\Temp\02dcb1861a5a0f80902ff17bf6bb525f2cd2ce91c6880ae4e65bbebdc6437479.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:1312
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha8766\ie\MediaViewV1alpha8766.dll" /s
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:1004
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:1704

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha8766\ie\MediaViewV1alpha8766.dll

      Filesize

      85KB

      MD5

      56568296ad6ce13575a469a3c25c675d

      SHA1

      2e65885979dcb10727b8a3e94d9bf6877d98ce33

      SHA256

      d9696ed42a8d44efa7938a2aa234017bee0fd8961d64f2d77fdbda2136fdd45f

      SHA512

      e9d6fcd0b560aed4d6fb05b87d35eb61018ea616f296979294ba1083fd8dbad65b6f4214b15e99c61543097a81a986f8804cd78f4e13da5dd606a35933eb2b8e

    • \Program Files (x86)\MediaViewV1\MediaViewV1alpha8766\ie\MediaViewV1alpha8766.dll

      Filesize

      85KB

      MD5

      56568296ad6ce13575a469a3c25c675d

      SHA1

      2e65885979dcb10727b8a3e94d9bf6877d98ce33

      SHA256

      d9696ed42a8d44efa7938a2aa234017bee0fd8961d64f2d77fdbda2136fdd45f

      SHA512

      e9d6fcd0b560aed4d6fb05b87d35eb61018ea616f296979294ba1083fd8dbad65b6f4214b15e99c61543097a81a986f8804cd78f4e13da5dd606a35933eb2b8e

    • \Users\Admin\AppData\Local\Temp\nst453C.tmp\aminsis.dll

      Filesize

      559KB

      MD5

      75fccc3ffe4fdeaa26b9098975ba3772

      SHA1

      9f04339adecad084b9696f757a8c12d3fd036be0

      SHA256

      71fd0603ba5bb405a0d134595c0d7f7d2ffd83bf1d083d4ccb6e7382f5bef81e

      SHA512

      bd3c65aa43b88dd3e1449180944d7dd6df3734fb1097117be4285b8b4bd72e7decf5e3e18e8a49b51b71b47b9ae9e444128dfeb1167a4b04a08dc220d314e3bd

    • memory/1004-56-0x0000000000000000-mapping.dmp

    • memory/1312-54-0x0000000075B71000-0x0000000075B73000-memory.dmp

      Filesize

      8KB

    • memory/1704-60-0x0000000000000000-mapping.dmp