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Adware.Win32.KuaiZip.AE

October 25, 2019
 ALIASES:

HEUR:AdWare.Win32.KuaiZip.gen (Kaspersky)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Adware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

1,675,672 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

25 Oct 2019

Arrival Details

This Adware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other System Modifications

This Adware adds the following registry keys:

HKEY_CURRENT_USER\Software\PopRetainInfo

HKEY_CURRENT_USER\Software\KuaiZip\
temp

It adds the following registry entries:

HKEY_CURRENT_USER\Software\PopRetainInfo
flowpop = "KuaiZip_flowpop_1561615478"

It deletes the following registry keys:

HKEY_CURRENT_USER\Software\KuaiZip\
temp\flowpop_lastruntime

Other Details

This Adware connects to the following possibly malicious URL:

  • http://report.{BLOCKED}z.7654.com/{BLOCKED}z/stamp_trace?{random characters}

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.850

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software
    • PopRetainInfo
  • In HKEY_CURRENT_USER\Software\KuaiZip
    • temp

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\PopRetainInfo
    • flowpop = "KuaiZip_flowpop_1561615478"

Step 4

Scan your computer with your Trend Micro product to delete files detected as Adware.Win32.KuaiZip.AE. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:

Step 5

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

  • In HKEY_CURRENT_USER\Software\KuaiZip\temp
    • flowpop_lastruntime


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