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Winmm.dll Trojan Heuristic Analysis

Updated 3 months ago
Checked by Malware Check
winmm.dll

Technical Analysis

File Name winmm.dll
File Type
PE32+ executable (DLL) (GUI) x86-64, for MS Windows
Scanner Version 1.0.225.174
Database Version 2025-09-20 16:00:24 UTC
⚠

Trojan.Heur!.022120A2

Malware family: Heuristic

Heuristic detection uses behavioral analysis and pattern recognition to identify potential threats without specific signatures. This proactive approach detects suspicious code behavior that may indicate malware presence. Detection may occasionally produce false positives when legitimate software exhibits similar behavioral patterns.
N/A
Detection Rate
16,003,072
File Size (bytes)
2025-09-20
Analysis Date

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File Identification

Hash Type Value Action
MD5
6547b3b8f373f41de683c17d5198db9f
SHA1
a08404584a35e50ff5b0e547252df9ab440e9171
SHA256
0a9f495a054cca00148da0cd5cc375ab577a6f8c5d5849ffa2327656e928de74
SHA512
29fafa59dbdc82570e67d33b9b3d65ad89b7233e117988c14ab1ab806040bee2a797d3f750096dc4c96ba5dd592376a2b762a76058cb2758ed082f03b6ffadd7
ImpHash
24422f45854fd7a1aea4052020bf1816

PE Analysis

Basic Information

▼
Image Base 0x180000000
Entry Point 0x18153a7c2
Compilation Time 2024-07-18 11:00:32
Checksum 0x00000000 (Actual: 0x00f49968)
OS Version 6.0
PEiD Signatures PE32+ executable (DLL) (GUI) x86-64, for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 8 libraries
WS2_32, CRYPT32, bcrypt, RPCRT4, KERNEL32, USER32, ADVAPI32, MSWSOCK
Exports 192 functions
Resources 0 Resources
Sections 9 Sections

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 2,640,317 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
.rdata 0x00286000 756,686 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
.data 0x0033f000 1,038,448 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE D41D8CD98F00B204E9800998ECF8427E
.pdata 0x0043d000 98,028 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
_RDATA 0x00455000 244 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
.rune0 0x00456000 8,383,180 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
.rune1 0x00c55000 336 bytes 512 bytes 0.58 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 1935199FE13B07E7C57F3B1D1F2BA4B1
.rune2 0x00c56000 16,000,924 bytes 16,001,024 bytes 7.87 (Packed/Encrypted) IMAGE_SCN_CNT_CODE|IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_NOT_PAGED|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 9F2E422C49D98B1ECD1C9D270EB98C34
.reloc 0x01b99000 256 bytes 512 bytes 2.43 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ D85F93DE458CC5E04E7CD0D9B84D7410
Entropy Analysis Alert

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

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.Heur!.022120A2 Removal

Gridinsoft has the capability to identify and eliminate Trojan.Heur!.022120A2 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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