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Winserver.exe Backdoor Dropper Analysis

Updated 1 year ago
Checked by Malware Check
winserver.exe

Technical Analysis

File Name winserver.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.154.174
Database Version 2024-01-14 17:04:45 UTC
⚠

Backdoor.Win32.Dropper.bot!s1

Malware family: Dropper

Trojan Droppers deliver additional malware payloads to victim systems, serving as deployment mechanisms for viruses, worms, trojans, and ransomware while using disguise techniques to avoid detection.
N/A
Detection Rate
12,423,680
File Size (bytes)
2024-01-14
Analysis Date

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File Identification

Hash Type Value Action
MD5
a43bedcea11374dcac695f3c6c73d087
SHA1
e49dac10515c6eac7e4faf0ff8e33aac53948a7c
SHA256
ac4f790c512fdad670bc2d49171d1cd46fe93c3264317cbac616d64b16762457
SHA512
25e116aed58f43bd8d32f2119280af1713b95883320fc094347192ca0c09f2f5d47dfcd94b66561b2a845326514a579ab5a6e548aab148a747ddba08a03105a5
ImpHash
d5d9d937853db8b666bd4b525813d7bd

PE Analysis

Basic Information

▼
Image Base 0x00400000
Entry Point 0x00401ae1
Compilation Time 2013-06-15 16:44:28
Checksum 0x00000000 (Actual: 0x00be8b75)
OS Version 4.0
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows
Digital Signature The PE file does not contain a certificate table.
Imports 3 libraries
shlwapi, kernel32, user32
Exports 0 functions
Resources 3 Resources
Sections 4 Sections

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 3,110 bytes 3,584 bytes 5.15 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ A941EDE160CF12509BE8DD37AE2B6A57
.rdata 0x00002000 1,216 bytes 1,536 bytes 4.21 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 930587E8EECE4537E4BE6A4476DC03FA
.data 0x00003000 55,024 bytes 1,536 bytes 1.73 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 7F95694B637A8E9D84E496462C4AF938
.rsrc 0x00011000 12,415,588 bytes 12,416,000 bytes 8.00 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 0FC79A3AA604D132B16C3CC3A72AB0E9
Entropy Analysis Alert

1 section(s) with high entropy (≥7.5) detected - possible packing/encryption

Resource Analysis

▼
Total Resources: 3 (12,415,366 bytes)
Resource Type Count Total Size Percentage
IMAGE 1 66 bytes
0%
RT_RCDATA 2 12,415,300 bytes
100%

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

The PE file does not contain a certificate table.

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

Backdoor.Win32.Dropper.bot!s1 Removal

Gridinsoft has the capability to identify and eliminate Backdoor.Win32.Dropper.bot!s1 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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