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Windows Update.exe Backdoor Gen Analysis

Updated 12 days ago
Checked by Malware Check
Windows Update.exe

Technical Analysis

File Name Windows Update.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.231.174
Database Version 2025-12-28 08:00:39 UTC
⚠

Backdoor.Win32.Gen.vl!n

Malware family: Gen

This is a generic detection identifier for files exhibiting Trojan horse characteristics. It indicates malware that disguises itself as legitimate software while containing malicious code designed to compromise system security or steal information.
N/A
Detection Rate
76,501,079
File Size (bytes)
2025-12-28
Analysis Date

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File Identification

Hash Type Value Action
MD5
672cf7f52962fea5b8279aef12972ac7
SHA1
64ae3768805562064f4cdc16dc9cf989e2043ac4
SHA256
cb5eddae7a0fba2274901bcff5a1632d72a337caf9fc44460941f5fcc384ef90
SHA512
1d2f8ab2527bd0e3b06a97772e88af68f2d6395bf5b84978eef69e2a6878a99ad7d2ba573c079b2148bd24436af00838c5cda9f075eed24795de20babe56b123
ImpHash
18f916f06d12edc22a3a1c220fe422cc

PE Analysis

Basic Information

▼
Icon
Hash: 1c543bd78b4e7e8452d707ea722a1e2d
Fuzzy: 3b5d3c7d207e37dceeedd301e35e2e58
dHash: 0000000000000000
Image Base 0x00400000
Entry Point 0x00429ef0
Compilation Time 2022-04-21 12:28:54
Checksum 0x00000000 (Actual: 0x04904aef)
OS Version 4.0
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 13 libraries
Exports 0 functions
Resources 110 Resources
Sections 6 Sections

Version Information

▼
Comments
CompanyName
FileDescription Windows Update
FileVersion 0, 0, 0, 0
InternalName Windows Update
LegalCopyright 版权所有 (C) 2022, Try
LegalTrademarks
OriginalFilename Windows Update.EXE
PrivateBuild
ProductName Windows Update
ProductVersion 0, 0, 0, 0
SpecialBuild
Translation 0x0804 0x04b0

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 1,857,808 bytes 1,859,584 bytes 4.52 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 54456AF7D967DEF4001DA0A4600DFD75
.rdata 0x001c7000 132,442 bytes 135,168 bytes 3.92 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 8C1B786F2DFA694DCB502570AA9A0920
.data 0x001e8000 116,776 bytes 86,016 bytes 4.21 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 9B5E4C29D31847F20EC1F16729BA1F53
.idata 0x00205000 23,538 bytes 24,576 bytes 4.96 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE AD546C95804D259935F928037C1F20BF
.rsrc 0x0020b000 74,111,734 bytes 74,113,024 bytes 4.76 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 24D869D4864B6950768F08DEC037A437
.reloc 0x048b9000 276,477 bytes 278,528 bytes 2.26 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ E3EBB4CEF81FD59B8AEBFAFC78C20826

Resource Analysis

▼
Total Resources: 110 (61,753,360 bytes)
Resource Type Count Total Size Percentage
GIF 5 6,972,044 bytes
11.3%
WAVE 13 12,848,196 bytes
20.8%
RT_CURSOR 2 488 bytes
0%
RT_BITMAP 72 41,918,792 bytes
67.9%
RT_ICON 1 9,640 bytes
0%
RT_DIALOG 2 968 bytes
0%
RT_STRING 12 2,326 bytes
0%
RT_GROUP_CURSOR 1 34 bytes
0%
RT_GROUP_ICON 1 20 bytes
0%
RT_VERSION 1 852 bytes
0%

Certificate Chain Analysis

▼
No Digital Signatures

This file is not digitally signed.

Security Implications:
  • Cannot verify the publisher's identity
  • Increased security risk when running this file
  • May trigger security warnings on some systems

⚠ This file either lacks a digital signature or the certificate chain could not be verified
Exercise caution when executing unsigned files from unknown sources

Certificate Verification Status

No valid SignedData structure was found.

Recommendation: Verify the file source and ensure it comes from a trusted publisher.

Backdoor.Win32.Gen.vl!n Removal

Gridinsoft has the capability to identify and eliminate Backdoor.Win32.Gen.vl!n without requiring further user intervention.

Download Anti-Malware

Removal Instructions

Follow these steps to completely remove the threat from your system

  1. Start by downloading Gridinsoft Anti-Malware to your computer.
  2. Double-click on the gsam-en-install.exe file and follow the on-screen instructions to install the program.
  3. Once the installation of Gridinsoft Anti-Malware is complete, the program will open on the Scan screen.
  4. Click on the "Standard Scan" button to begin scanning your computer for threats.
  5. After the scanning process is finished, click on "Clean Now" to remove any detected threats.
  6. If prompted, restart your system to complete the removal process and ensure all threats are eliminated.
Important: Before You Start
Disconnect from the internet to prevent the malware from spreading or downloading additional threats. Run the scan in Safe Mode for better detection and removal of persistent threats.

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