Analysis

  • max time kernel
    38s
  • max time network
    43s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    27-05-2022 22:06

General

  • Target

    da89e16587a441da7acf7d34d77c9f758c203346f0b0a44ff630ce4d5323736b.exe

  • Size

    128KB

  • MD5

    04219fec20d4677e1df3da44b1a0430e

  • SHA1

    92a217650dc425c67ae0829aecc5781bbd0ceff7

  • SHA256

    da89e16587a441da7acf7d34d77c9f758c203346f0b0a44ff630ce4d5323736b

  • SHA512

    1b31ed2d3cb09f395b20c691d8bfc7b696214bbe3e7362aaeb11ed66e9915e6832fad52fdc40691333e23048ff365e899542decd47c8fb3e249070591ca6fefc

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • 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 Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 64 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\da89e16587a441da7acf7d34d77c9f758c203346f0b0a44ff630ce4d5323736b.exe
    "C:\Users\Admin\AppData\Local\Temp\da89e16587a441da7acf7d34d77c9f758c203346f0b0a44ff630ce4d5323736b.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1884
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" /s "C:\Program Files (x86)\Common Files\PushWare\cpush.dll"
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:1652

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Common Files\PushWare\cpush.dll

    Filesize

    208KB

    MD5

    be1e7c818f04f542760c346ea78d76b6

    SHA1

    313db03d8501eff4f7602a12aa3af9c46fd64187

    SHA256

    eede3ebf90da854bf1dc297361e95ad0c220ccc5eb6e22cf8aea1cef5c6bdfaf

    SHA512

    386b5409b2832bf4b6fd451c6c60b9fec8ee7b0f737307221f758770ac58fb432a19cba7c2247212bba6c7b0cf97eedb275be12ab1c6eed213e6eec36ea770f5

  • \Program Files (x86)\Common Files\PushWare\cpush.dll

    Filesize

    208KB

    MD5

    be1e7c818f04f542760c346ea78d76b6

    SHA1

    313db03d8501eff4f7602a12aa3af9c46fd64187

    SHA256

    eede3ebf90da854bf1dc297361e95ad0c220ccc5eb6e22cf8aea1cef5c6bdfaf

    SHA512

    386b5409b2832bf4b6fd451c6c60b9fec8ee7b0f737307221f758770ac58fb432a19cba7c2247212bba6c7b0cf97eedb275be12ab1c6eed213e6eec36ea770f5

  • memory/1652-55-0x0000000000000000-mapping.dmp

  • memory/1884-54-0x0000000075191000-0x0000000075193000-memory.dmp

    Filesize

    8KB