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Musu_mam.exe Trojan Downloader Analysis

Updated 5 hours ago
Checked by Malware Check
musu_mam.exe

Technical Analysis

File Name musu_mam.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.219.174
Database Version 2025-06-25 03:00:21 UTC
⚠

Trojan.Win32.Downloader.sa

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
1,699,840
File Size (bytes)
2025-06-25
Analysis Date

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File Identification

Hash Type Value Action
MD5
4c5ceeac8ad751b0d8069bd31aab4e49
SHA1
daff4b3d1767ae73d39e91384a04ef17ec2ed564
SHA256
fcfb9131913e37af858f7987d742fc65a79c84a7cea0f89f5406e54840274b51
SHA512
3008fea61c16d3a871a9d778041b2d6ba88a1fc4277cd341e5917f4de488583c25fe7e791989a16017e22a119ca48a244ca273eaeacbbd7c94ac5f54184a64b4
ImpHash
b49b5fe37f3fe4ad20256c9c78d8b1a6

PE Analysis

Basic Information

▼
Icon
Hash: 34bac0f4f1315d99b196011c71242aca
Fuzzy: accb835203ea2cefc9e2455b3ee9a084
dHash: f0e6e660f4ecb9ba
Image Base 0x00400000
Entry Point 0x00406550
Compilation Time 2011-04-18 04:42:45
Checksum 0x739191d1 (Actual: 0x001a17d2)
OS Version 4.0
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 9 libraries
KERNEL32, USER32, Mai@KF, MSVCRT, MFC42, VERSION, ADVAPI32, ole32, OLEAUT32
Exports 0 functions
Resources 8 Resources
Sections 4 Sections

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 22,434 bytes 24,576 bytes 5.93 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 02C1B2D80BCE7BA2E74DD8057F9A73B6
.rdata 0x00007000 5,026 bytes 8,192 bytes 3.86 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 0EE0C9810F32F32E7B874B53B50F7CB2
.data 0x00009000 249,416 bytes 4,096 bytes 2.36 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 3D008B35F2450FC5238C4E5002020640
.rsrc 0x00046000 285,364 bytes 286,720 bytes 6.03 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ D9F5A0ABDADB81A97B8A0A93990779C9

Resource Analysis

▼
Total Resources: 8 (284,816 bytes)
Resource Type Count Total Size Percentage
RT_ICON 3 284,280 bytes
99.8%
RT_MENU 1 170 bytes
0.1%
RT_DIALOG 1 246 bytes
0.1%
RT_STRING 1 56 bytes
0%
RT_ACCELERATOR 1 16 bytes
0%
RT_GROUP_ICON 1 48 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.

Trojan.Win32.Downloader.sa Removal

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