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FMusS3.exe Trojan Kryptik Analysis

Updated 3 hours ago
Checked by Malware Check
fMusS3.exe

Technical Analysis

File Name fMusS3.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.247.174
Database Version 2026-06-10 11:00:28 UTC
⚠

Trojan.Win32.Kryptik.sa

Malware family: Kryptik

Kryptik is a backdoor Trojan that provides unauthorized system access to threat actors. It enables remote control capabilities and allows attackers to execute various malicious activities on compromised systems.
N/A
Detection Rate
6,898,688
File Size (bytes)
2026-06-10
Analysis Date

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File Identification

Hash Type Value Action
MD5
43f3908724102fbf4ecfc0dfd943209f
SHA1
a0dc6b11b0536644ea3b4d1bbd60cc966e2a588c
SHA256
4bef96a59c65fb8de42b216a440593ddc0b003c33d003ab5cfcdf48d4b8fe6d2
SHA512
a95c124adb3d9b0100bd9cfc5221b5434d0987c3fa4113ba0746366a5ee5557dbdcfbb456eb5963501db24c0a01fb90b857045851418b75b5c3298a4ca4d598f
ImpHash
3a18c9288ec378b2731800795cda5f77

PE Analysis

Basic Information

▼
Image Base 0x00400000
Entry Point 0x00439010
Compilation Time 2023-09-01 10:24:29
Checksum 0x00000000 (Actual: 0x0069fd0c)
OS Version 6.0
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 8 libraries
KERNEL32, USER32, GDI32, COMDLG32, ADVAPI32, SHELL32, ole32, OLEAUT32
Exports 0 functions
Resources 0 Resources
Sections 5 Sections

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 475,965 bytes 476,160 bytes 6.41 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ B16556A643785C8A2D8D5838E275BE7F
.data 0x00076000 6,413,096 bytes 6,403,584 bytes 7.85 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE B8435B065C90308EB0B50C5C0A878051
.idata 0x00694000 5,658 bytes 6,144 bytes 5.17 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 2897EDC35C394E8B8C92E57F2ABB003F
.rsrc 0x00696000 16 bytes 512 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ BF619EAC0CDF3F68D496EA9344137E8B
.reloc 0x00697000 11,256 bytes 11,264 bytes 6.61 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ 9B08D3509037D6B335017186786C5530
Entropy Analysis Alert

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

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

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.Kryptik.sa Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win32.Kryptik.sa without requiring further user intervention.

Download Anti-Malware

Removal Instructions

Follow these steps to completely remove the threat from your system

  1. 1
    Get Gridinsoft Anti-Malware — it's a quick 2 MB download that won't slow down your PC.
  2. 2
    Run the installer gsam-en-install.exe. The setup takes about 2 minutes and doesn't require a restart.
  3. 3
    The app launches right after installation. You'll see the main dashboard with the scan button front and center.
  4. 4
    Hit "Standard Scan" — this checks all the spots where malware typically hides: temp folders, browser data, startup programs, and system directories.
  5. 5
    Once the scan finds this threat, click "Clean Now". The removal usually happens instantly, though some stubborn infections may need a reboot.
  6. 6
    If you see a restart prompt, go ahead and reboot. This clears any malware that was running in memory and ensures your system starts fresh.
Important: Before You Start
Quick tip: unplug from the internet before scanning. Some malware phones home for instructions or downloads extra payloads when it senses trouble. If the infection is severe, boot into Safe Mode first — it limits what can run and makes cleanup easier.

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