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微信Fils端口.exe Trojan Downloader Analysis

Updated 1 month ago
Checked by Malaware Check
微信Fils端口.exe

Technical Analysis

File Name 微信Fils端口.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.214.174
Database Version 2025-04-21 19:00:23 UTC
⚠

Trojan.Win32.Downloader.oa!s1

Malware family: Downloader

Downloader Trojans specialize in retrieving and installing additional malware payloads. Unlike comprehensive malware, they focus specifically on payload delivery rather than direct system damage.
N/A
Detection Rate
4,132,894
File Size (bytes)
2025-04-21
Analysis Date

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File Identification

Hash Type Value Action
MD5
6ef2bb072cc0d15a54c2aeaf4bb488b2
SHA1
da20d6cd88df0e20033c2e0c13d095acf21dbc11
SHA256
0ea47d0a7f3ce437b2f982c5c37ecd45408911925b05d86c97d3967e3052f2e2
SHA512
6d3f1daa9f66ce4e9ff9b82ebcfa453b15ecf5731f5a887417c4e2ffea7947d5562c11b60b13dbcb786dcfa14ceab98f0ca61758277fd8683111aa7c9cccf014
ImpHash
eeac73be37480fd144f387e3563a0f14

PE Analysis

Basic Information

▼
Icon
Hash: 4648f02f10a35439f6609a4f28928d3c
Fuzzy: f5d0882c70b11f56bc7a528fc9f701eb
dHash: 70c6dbf7e6e67081
Image Base 0x00400000
Entry Point 0x00460da5
Compilation Time 2022-04-10 02:40:30
Checksum 0x00000000 (Actual: 0x003ffa9f)
OS Version 4.0
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 12 libraries
Exports 0 functions
Resources 81 Resources
Sections 4 Sections

Version Information

▼
FileVersion 8.9.8.9
FileDescription 应用程序
ProductName RuntimeBroker
ProductVersion 8.9.8.9
CompanyName RuntimeBroker
LegalCopyright RuntimeBroker
Comments RuntimeBroker
Translation 0x0804 0x04b0

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 518,470 bytes 520,192 bytes 6.56 (Compressed) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 67AAD97673EC74BA2994E9AC7098079E
.rdata 0x00080000 1,429,414 bytes 1,429,504 bytes 6.98 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 84C501DB06F34DF0DBD5E657B8981D8B
.data 0x001dd000 213,130 bytes 73,728 bytes 5.09 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE A6B2B78B95A928F77AEEE061ABA0A3FF
.rsrc 0x00212000 516,924 bytes 520,192 bytes 5.16 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 638238DAD000E46C4395413C15E4EC28
Entropy Analysis Alert

2 section(s) with elevated entropy (≥6.5) - possible compression

Resource Analysis

▼
Total Resources: 81 (512,673 bytes)
Resource Type Count Total Size Percentage
TEXTINCLUDE 3 370 bytes
0.1%
RT_CURSOR 4 1,104 bytes
0.2%
RT_BITMAP 14 6,040 bytes
1.2%
RT_ICON 29 496,376 bytes
96.8%
RT_MENU 2 656 bytes
0.1%
RT_DIALOG 10 4,418 bytes
0.9%
RT_STRING 11 2,268 bytes
0.4%
RT_GROUP_CURSOR 3 74 bytes
0%
RT_GROUP_ICON 3 62 bytes
0%
RT_VERSION 1 608 bytes
0.1%
RT_MANIFEST 1 697 bytes
0.1%

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.

Trojan.Win32.Downloader.oa!s1 Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win32.Downloader.oa!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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