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Nexora.exe Trojan Downloader Analysis

Updated 2 days ago
Checked by Malware Check
Nexora.exe

Technical Analysis

File Name Nexora.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.222.174
Database Version 2025-07-31 00:00:15 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
1,390,558
File Size (bytes)
2025-07-31
Analysis Date

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File Identification

Hash Type Value Action
MD5
9a9da8c930a9f0edf82d0f0abfaa6768
SHA1
0732c5888cc357522e7e3803de99aa4e8cfeaf8d
SHA256
99b66d8309edba2ad061e5274a148288012f93a05839a99ff071fea6fe16d2a5
SHA512
d559d2047bbccabfd6d6eb3a181633e435bde4cf70e0caa834fb649a609f22c034859c38a0dc94eb5f72f988d4bdbfceb5dd53c0b2b65b57e4c142767bd23b21
ImpHash
32f3282581436269b3a75b6675fe3e08

PE Analysis

Basic Information

▼
Icon
Hash: 51245bc0d8ed623388e0e780d6b2a221
Fuzzy: 5713cee45d2cef2983736e27b9a81d0e
dHash: 820096a444421066
Image Base 0x00400000
Entry Point 0x004039e9
Compilation Time 2012-02-24 19:19:49
Checksum 0x00160de5 (Actual: 0x00160de5)
OS Version 5.0
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 8 libraries
KERNEL32, USER32, GDI32, SHELL32, ADVAPI32, COMCTL32, ole32, VERSION
Exports 0 functions
Resources 10 Resources
Sections 6 Sections

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 28,780 bytes 29,184 bytes 6.52 (Compressed) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 57B6F5DD107E84514219E896AD53A26F
.rdata 0x00009000 10,898 bytes 11,264 bytes 4.39 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 1B7156E3EFFE405EC13C533EC456D299
.data 0x0000c000 4,089,596 bytes 512 bytes 1.47 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 973BD2BBB79D2E95A9565EA5181CC101
.ndata 0x003f3000 856,064 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_UNINITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE D41D8CD98F00B204E9800998ECF8427E
.rsrc 0x004c4000 19,190 bytes 19,456 bytes 2.47 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ E6BFB18F8A0AC4A2A19BCF2C04397BC0
.reloc 0x004c9000 12,916 bytes 13,312 bytes 2.05 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ 0CEA2FB37E08627493CC2EF8E4FC17C0
Entropy Analysis Alert

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

Resource Analysis

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Total Resources: 10 (18,595 bytes)
Resource Type Count Total Size Percentage
RT_ICON 4 17,165 bytes
92.3%
RT_DIALOG 3 636 bytes
3.4%
RT_GROUP_ICON 2 68 bytes
0.4%
RT_MANIFEST 1 726 bytes
3.9%

Certificate Chain Analysis

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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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