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Winmm.dll Trojan Agent Analysis

Updated 1 year ago
Checked by Malware Check
winmm.dll

Technical Analysis

File Name winmm.dll
File Type
PE32+ executable (DLL) (console) x86-64, for MS Windows
Scanner Version 1.0.147.174
Database Version 2023-11-16 11:02:44 UTC
⚠

Trojan.Win64.Agent.cl

Malware family: Agent

Trojan Agent malware disguises itself as legitimate software while performing unauthorized activities including data theft and providing remote system access to threat actors.
N/A
Detection Rate
2,293,760
File Size (bytes)
2023-11-16
Analysis Date

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File Identification

Hash Type Value Action
MD5
c130ae45661bde4e9177a487c89f82bf
SHA1
6fbf6f59bc344ac7342eace7bfeddd8e333bccfd
SHA256
0687b079681af26a85058dff8d5cfaba861f54e94749ac1b883bc52b034622c6
SHA512
e3b479d601ee3b23a96f2ee59765914c0f984d285d1bb55953851a57b8fd7457533d0fc472af37daaa843029deed4d2eb7ee71ffd6aa4885b1d74393ce749675
ImpHash
497d06345f7aef11ff379a20933813f1

PE Analysis

Basic Information

▼
Image Base 0x180000000
Entry Point 0x1800ad7fc
Compilation Time 2022-05-11 07:52:30
Checksum 0x00000000 (Actual: 0x0023a20d)
OS Version 6.0
PEiD Signatures PE32+ executable (DLL) (console) x86-64, for MS Windows
PDB Path D:\a\Koaloader\Koaloader\build\64\winmm\Release\winmm.pdb
Digital Signature The PE file does not contain a certificate table.
Imports 3 libraries
KERNEL32, USER32, VERSION
Exports 181 functions
Resources 2 Resources
Sections 7 Sections

Version Information

▼
CompanyName ʕ •ᴥ•ʔ acidicoala
FileDescription https://github.com/acidicoala/Koaloader
FileVersion 2.3.1
InternalName Koaloader
LegalCopyright Fuck the copyright \ud83d\udd95
OriginalFilename Koaloader.dll
ProductName Koaloader
ProductVersion 2.3.1
Translation 0x0409 0x04e4

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 1,436,156 bytes 1,436,160 bytes 6.46 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ CCB0A001878F7E5E30DA9342C2D4D8A4
.rdata 0x00160000 746,560 bytes 747,008 bytes 5.20 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ F16969D4F311CAE911FD98B09CFB803D
.data 0x00217000 37,172 bytes 26,624 bytes 4.38 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 87064ABB6702A3E46792E3A3E8BB01A1
.pdata 0x00221000 70,008 bytes 70,144 bytes 6.20 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ A45A7C1B59A0964B38742AB7243AF808
_RDATA 0x00233000 348 bytes 512 bytes 3.36 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ FBB1C4D13D67141E057B0AA5FE38CFCB
.rsrc 0x00234000 1,296 bytes 1,536 bytes 3.76 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 06525E8B247C399719F462F6234398F2
.reloc 0x00235000 10,640 bytes 10,752 bytes 6.28 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ 5485B8A9A562F03BA404108A1740FA48

Resource Analysis

▼
Total Resources: 2 (1,133 bytes)
Resource Type Count Total Size Percentage
RT_VERSION 1 752 bytes
66.4%
RT_MANIFEST 1 381 bytes
33.6%

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.

Trojan.Win64.Agent.cl Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win64.Agent.cl 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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