Should I remove “Trojan-PSW.Win32.Stealer.yst”?

The Trojan-PSW.Win32.Stealer.yst 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.

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What Trojan-PSW.Win32.Stealer.yst virus can do?

• Behavioural detection: Executable code extraction – unpacking
• SetUnhandledExceptionFilter detected (possible anti-debug)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Possible date expiration check, exits too soon after checking local time
• Guard pages use detected – possible anti-debugging.
• Dynamic (imported) function loading detected
• Performs HTTP requests potentially not found in PCAP.
• Starts servers listening on 127.0.0.1:0
• Reads data out of its own binary image
• CAPE extracted potentially suspicious content
• Drops a binary and executes it
• The binary contains an unknown PE section name indicative of packing
• Authenticode signature is invalid
• A scripting utility was executed
• Uses Windows utilities for basic functionality
• Uses Windows utilities for basic functionality
• Behavioural detection: Injection (Process Hollowing)
• Executed a process and injected code into it, probably while unpacking
• Detects Sandboxie through the presence of a library
• Detects Avast Antivirus through the presence of a library
• Behavioural detection: Injection (inter-process)
• Checks for the presence of known windows from debuggers and forensic tools
• Created a process from a suspicious location
• Steals private information from local Internet browsers
• Captures Screenshot
• Network activity contains more than one unique useragent.
• Creates a hidden or system file
• CAPE detected the Vidar malware family
• Checks the presence of disk drives in the registry, possibly for anti-virtualization
• Attempts to modify proxy settings
• Attempts to disable Windows Defender
• Attempts to modify Windows Defender using PowerShell
• Harvests cookies for information gathering
• Attempts to execute suspicious powershell command arguments
• Uses suspicious command line tools or Windows utilities

How to determine Trojan-PSW.Win32.Stealer.yst?

File Info:
name: 3EA51B498B7BEA8E5848.mlw
path: /opt/CAPEv2/storage/binaries/5d4fcd7722877b2f5c272ccc3b73d117967b11e575a354349cfd3fd7b0cd376b
crc32: 9A705A21
md5: 3ea51b498b7bea8e5848de30c3f7d967
sha1: 420a0a120243b1cd5dbba1ca9cd485691d430a55
sha256: 5d4fcd7722877b2f5c272ccc3b73d117967b11e575a354349cfd3fd7b0cd376b
sha512: 9a148c3320b9270b1eb809146e17e3c26403720326958a6cb226fef74d188ee75e55cf77536edb0acd6733cbc309012ec6288c09ecf309e1879ff3501216092f
ssdeep: 196608:xBDwbaTsPHjcLz7G/Okwmygr8iLHvPejUSweFZ:xWeiw30N5rHLHvEwC
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T18A66335B71D880F6FE639232A7CC3DF641B1630416206DFB7350C94C6EB98B5AA6F486
sha3_384: c46307b0f7364896af3dcc42e1c96793b56f53c00745df1a0fa0c8e2b9bac33bfb4107aab88b98cc7788918b38b6def5
ep_bytes: 558bec6aff6898c24100680691410064
timestamp: 2019-02-21 16:00:00

Version Info:
CompanyName: Igor Pavlov
FileDescription: 7z Setup SFX
FileVersion: 19.00
InternalName: 7zS.sfx
LegalCopyright: Copyright (c) 1999-2018 Igor Pavlov
OriginalFilename: 7zS.sfx.exe
ProductName: 7-Zip
ProductVersion: 19.00
Translation: 0x0409 0x04b0

Trojan-PSW.Win32.Stealer.yst also known as:

How to remove Trojan-PSW.Win32.Stealer.yst?

• 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.