RiskTool.Win32.StartPage.jyr (file analysis)

The RiskTool.Win32.StartPage.jyr is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

What RiskTool.Win32.StartPage.jyr virus can do?

• SetUnhandledExceptionFilter detected (possible anti-debug)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Anomalous file deletion behavior detected (10+)
• Dynamic (imported) function loading detected
• Enumerates running processes
• Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
• Reads data out of its own binary image
• Attempts to modify Internet Explorer’s start page
• Unconventionial binary language: Chinese (Simplified)
• Unconventionial language used in binary resources: Chinese (Simplified)
• The binary contains an unknown PE section name indicative of packing
• The binary likely contains encrypted or compressed data.
• The executable is compressed using UPX
• Authenticode signature is invalid
• A ping command was executed with the -n argument possibly to delay analysis
• Uses Windows utilities for basic functionality
• Sniffs keystrokes
• Deletes its original binary from disk
• Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
• Installs itself for autorun at Windows startup
• Attempts to disable UAC
• Attempts to modify UAC prompt behavior
• Uses suspicious command line tools or Windows utilities

How to determine RiskTool.Win32.StartPage.jyr?

File Info:
name: 405E79BA9AD8913E3B45.mlwpath: /opt/CAPEv2/storage/binaries/6cf1f6977de643d96e92d85df2f6eb1a258528fefbf4515be8e9d0e15c42d367crc32: 93D42884md5: 405e79ba9ad8913e3b451399fc952a52sha1: 320782547ab4ccf4ea6789e6b78b3c3db57122a7sha256: 6cf1f6977de643d96e92d85df2f6eb1a258528fefbf4515be8e9d0e15c42d367sha512: 68ca80d79b9933d54eb396bdbfac66d294a4bd8fd460620285ab2a4092446c47821f0fd7c1ded2014eb94b035ad2c41a90f3f32a580d9ce95009d7a068d8f2d4ssdeep: 24576:4q5TfcdHj4fmbsz+76Yu5ix/iKWG+IldPW5:4UTsamgS68/m0Wtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T15F15239213FC4A9AF6F13736F87127A00A35BE56A8BDC71C17D82A4C19F23914D94B71sha3_384: bd5a174b2674329e2212f9b49e82e230e815eeb940f2cd370ade5768fad57fe0b5018dd1a0d9c32e3e33f57a836a1171ep_bytes: 60be001051008dbe0000efff57eb0b90timestamp: 2015-04-01 08:54:10
Version Info:
FileVersion: 1.0.0.0LegalCopyright: Copyright © 2013-2015ProductVersion: 1.0.0.0授权方式: arFiTranslation: 0x0804 0x04b0

RiskTool.Win32.StartPage.jyr also known as:

How to remove RiskTool.Win32.StartPage.jyr?

• Download and install GridinSoft Anti-Malware.
• Open GridinSoft Anti-Malware and perform a “Standard scan“.
• “Move to quarantine” all items.
• Open “Tools” tab – Press “Reset Browser Settings“.
• Select proper browser and options – Click “Reset”.
• Restart your computer.