Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    28-05-2022 01:41

General

  • Target

    03197257fbaba291fdf6f0c830e13894ddcf47f353fe428574dae5fa03b8b019.exe

  • Size

    632KB

  • MD5

    2327d082e3d85205c4b1cfda468bbdea

  • SHA1

    0ef9dca3b2a4162ae302d2bc2c2ac7ff9aab58c5

  • SHA256

    03197257fbaba291fdf6f0c830e13894ddcf47f353fe428574dae5fa03b8b019

  • SHA512

    b1e18f50cbdb0df76fc2fd32367f48a81c703afd94c76c19faaa423c055b1be0b5cf377501eb27d3cf0fb0897163e11d371a3a13ec65d677441a973d808c81ef

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\03197257fbaba291fdf6f0c830e13894ddcf47f353fe428574dae5fa03b8b019.exe
    "C:\Users\Admin\AppData\Local\Temp\03197257fbaba291fdf6f0c830e13894ddcf47f353fe428574dae5fa03b8b019.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:2040
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha8556\ie\MediaViewV1alpha8556.dll" /s
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:1096
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:1268

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Browser Extensions

    1
    T1176

    Defense Evasion

    Modify Registry

    2
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    1
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha8556\ie\MediaViewV1alpha8556.dll
      Filesize

      85KB

      MD5

      7fdaa8d0bf92eac4692dfae2cd34279e

      SHA1

      f7a84dfe10be3c1c1da93941af65cf744c6098cd

      SHA256

      92cdf8aaf9361fd33623631db7edca55c4cecebfdf42942d7457752bf20654c4

      SHA512

      1575b5ae5effb34c77bb60cb2dafddf42860b99a80a26056b025228fd5c7bd207c587eab7b62e5de644fd34dd38d99b81434404cb96bd822040674acfa0841e4

    • \Program Files (x86)\MediaViewV1\MediaViewV1alpha8556\ie\MediaViewV1alpha8556.dll
      Filesize

      85KB

      MD5

      7fdaa8d0bf92eac4692dfae2cd34279e

      SHA1

      f7a84dfe10be3c1c1da93941af65cf744c6098cd

      SHA256

      92cdf8aaf9361fd33623631db7edca55c4cecebfdf42942d7457752bf20654c4

      SHA512

      1575b5ae5effb34c77bb60cb2dafddf42860b99a80a26056b025228fd5c7bd207c587eab7b62e5de644fd34dd38d99b81434404cb96bd822040674acfa0841e4

    • \Users\Admin\AppData\Local\Temp\nsyA9D.tmp\aminsis.dll
      Filesize

      559KB

      MD5

      75fccc3ffe4fdeaa26b9098975ba3772

      SHA1

      9f04339adecad084b9696f757a8c12d3fd036be0

      SHA256

      71fd0603ba5bb405a0d134595c0d7f7d2ffd83bf1d083d4ccb6e7382f5bef81e

      SHA512

      bd3c65aa43b88dd3e1449180944d7dd6df3734fb1097117be4285b8b4bd72e7decf5e3e18e8a49b51b71b47b9ae9e444128dfeb1167a4b04a08dc220d314e3bd

    • memory/1096-56-0x0000000000000000-mapping.dmp
    • memory/1268-60-0x0000000000000000-mapping.dmp
    • memory/2040-54-0x0000000075FE1000-0x0000000075FE3000-memory.dmp
      Filesize

      8KB