Analysis

  • max time kernel
    112s
  • max time network
    164s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    21/03/2022, 08:05

General

  • Target
    a14324f8142cd1b88a13dcd78763696f.exe
  • Size 651KB
  • Sample220321-jyv2bsacb8
  • SHA256 b3290a3fbb515f16464cc229377af2fb0c4e54764db5be91107523849acec6de
  • MD5 SHA1 SHA512

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    smtp.gmail.com

  • Port

    587

  • Password

    king@2021

Extracted

Family
  • snakekeylogger

Credentials

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger Payload 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Disables RegEdit via registry modification
  • Disables Task Manager via registry modification
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies data under HKEY_USERS 1 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a14324f8142cd1b88a13dcd78763696f.exe
    "C:\Users\Admin\AppData\Local\Temp\a14324f8142cd1b88a13dcd78763696f.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:632
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UXeGZNB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC53.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4344
    • C:\Users\Admin\AppData\Local\Temp\a14324f8142cd1b88a13dcd78763696f.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:4408
      • C:\Windows\SysWOW64\REG.exe
        REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 1 /f
        3⤵
        • Modifies registry key
        PID:4504
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k netsvcs -p -s BITS
    1⤵
    • Modifies data under HKEY_USERS
    PID:3888

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/632-146-0x0000000008920000-0x0000000008986000-memory.dmp

        memory/632-145-0x000000007FBC0000-0x000000007FBC1000-memory.dmp

        memory/632-137-0x00000000050D0000-0x0000000005674000-memory.dmp

        memory/632-138-0x0000000004BC0000-0x0000000004C52000-memory.dmp

        memory/632-139-0x0000000004B20000-0x00000000050C4000-memory.dmp

        memory/632-140-0x0000000004B80000-0x0000000004B8A000-memory.dmp

        memory/632-141-0x0000000004DF0000-0x0000000004E46000-memory.dmp

        memory/632-135-0x0000000000080000-0x000000000012A000-memory.dmp

        memory/632-136-0x0000000004A80000-0x0000000004B1C000-memory.dmp

        memory/632-134-0x00000000749A0000-0x0000000075150000-memory.dmp

        memory/3888-144-0x000001BE9D150000-0x000001BE9D154000-memory.dmp

        memory/3888-142-0x000001BE9AB60000-0x000001BE9AB70000-memory.dmp

        memory/3888-143-0x000001BE9ABC0000-0x000001BE9ABD0000-memory.dmp

        memory/4408-148-0x0000000000400000-0x0000000000426000-memory.dmp

        memory/4408-149-0x00000000749A0000-0x0000000075150000-memory.dmp

        memory/4408-150-0x0000000004FF0000-0x0000000005594000-memory.dmp

        memory/4408-151-0x0000000006660000-0x0000000006822000-memory.dmp

        memory/4408-152-0x0000000004FF0000-0x0000000005594000-memory.dmp