AdWare.Win32.KuwanBar (file analysis)

The AdWare.Win32.KuwanBar 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 AdWare.Win32.KuwanBar virus can do?

• SetUnhandledExceptionFilter detected (possible anti-debug)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Guard pages use detected – possible anti-debugging.
• A process attempted to delay the analysis task.
• Dynamic (imported) function loading detected
• Performs HTTP requests potentially not found in PCAP.
• 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
• A process created a hidden window
• Drops a binary and executes it
• 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
• Uses Windows utilities for basic functionality
• Behavioural detection: Transacted Hollowing
• Network activity contains more than one unique useragent.
• Installs itself for autorun at Windows startup
• Attempts to modify proxy settings
• Uses suspicious command line tools or Windows utilities

How to determine AdWare.Win32.KuwanBar?

File Info:
name: D32ABB90F0148562E16D.mlwpath: /opt/CAPEv2/storage/binaries/9a3dc0976aecf3bc6eecb3de33456c8e036537e2208c447578214aa2dc7f3c6dcrc32: 8935D3C2md5: d32abb90f0148562e16d50c77f8558easha1: 8f83d24948a5d50bf8117a45ac622d7a63cc5242sha256: 9a3dc0976aecf3bc6eecb3de33456c8e036537e2208c447578214aa2dc7f3c6dsha512: 739f18546e42db3d2dda7c4991175fa0eecd0b5969bdef43d3afd3bdde13a8105245617a1fdc4e3d264140e978d906f970927ea5fa2cf27aa41205d0a5e814dcssdeep: 393216:i48tNDPBYYAwsrJS2cZCGqSgAIlSIFzbi/lp4+4Z:j8zDP/JsrJSmGqSwAItbi9G+8type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T173D633566042A3F4E5652C35161BB4F114187C633EEA39B50E02CAE98D3BFD7DAB1E0Bsha3_384: 9aaa255369ff02c7fb3fb9f28978a56664011e3eb1f2e20b48623dffff8dc636a0e7c192dfd5022a0676e77326471686ep_bytes: 60be00905c008dbe0080e3ffc78780d1timestamp: 2020-11-27 05:38:48
Version Info:
Comments: CompanyName: Install AssistFileDescription: Fs-Zip Install AssistantFileVersion: 26.0.0.3InternalName: FsZipInstall.exeLegalCopyright: Copyright (c) 2020 Fs-ZipOriginalFilename: FsZipInstall.exe.exeProductName: FsZipInstall.exeProductVersion: 26.0.0.3Translation: 0x0804 0x04b0

AdWare.Win32.KuwanBar also known as:

How to remove AdWare.Win32.KuwanBar?

• 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.