Analysis

  • max time kernel
    4294120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    22/03/2022, 12:16

General

  • Target
    cpcrs.exe
  • Size 419KB
  • Sample220322-pfgnwabdgn
  • SHA256 3b2e708eaa4744c76a633391cf2c983f4a098b46436525619e5ea44e105355fe
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Drops file in Drivers directory 64 IoCs
  • Modifies Installed Components in the registry 2 TTPs
  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 64 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Drops file in Windows directory 64 IoCs
  • Modifies Control Panel 64 IoCs
  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cpcrs.exe
    "C:\Users\Admin\AppData\Local\Temp\cpcrs.exe"
    1⤵
    • Drops file in Drivers directory
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Maps connected drives based on registry
    • Drops file in Windows directory
    • Modifies Control Panel
    • Modifies Internet Explorer settings
    • Modifies data under HKEY_USERS
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1968

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1968-54-0x00000000001D0000-0x000000000023E000-memory.dmp

        memory/1968-55-0x000007FEF5BD0000-0x000007FEF65BC000-memory.dmp

        memory/1968-56-0x000000001AB00000-0x000000001AB02000-memory.dmp