Gridinsoft Logo
File Icon

Não confirmado 841623.crdownload Trojan Downloader Analysis

Updated 2 months ago
Checked by Malware Check
Não confirmado 841623.crdownload

Technical Analysis

File Name Não confirmado 841623.crdownload
File Type
PE32+ executable (GUI) x86-64, for MS Windows
Scanner Version 1.0.228.174
Database Version 2025-11-01 06:00:28 UTC
⚠

Trojan.Win64.Downloader.oa!s1

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
6,938,112
File Size (bytes)
2025-11-01
Analysis Date

Scan Another File

File Identification

Hash Type Value Action
MD5
5ad8a7572638ee4dccf514d27734443b
SHA1
a3c4e879351afa0bd3cf104c29ae4ab76f5d00b2
SHA256
6e89b4cde95c73acc3ddb82918f2415dda50f55babcaa5000f4234a5879856c0
SHA512
58f02fb114d280f1c6f1407e27b8bf7d73dcdc5186e1eafc17c4b458983eff416f6ce07ed894d5e3eb9202a0e784f4d2c8050625a9b329763eaf6fd38f9cbabe
ImpHash
4d63afaf57b3b14dae16281b87cbc85b

PE Analysis

Basic Information

▼
Icon
Hash: 1ac9973585a55239320d53cfe5a14ca9
Fuzzy: 986a3478c8dafda9c9379cbdc919d897
dHash: 2010b068b8582800
Image Base 0x140000000
Entry Point 0x14052435f
Compilation Time 2025-07-26 01:55:38
Checksum 0x00000000 (Actual: 0x006a6343)
OS Version 6.0
PEiD Signatures PE32+ executable (GUI) x86-64, for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 8 libraries
WS2_32, d3d9, KERNEL32, USER32, ADVAPI32, SHELL32, dwmapi, IMM32
Exports 0 functions
Resources 2 Resources
Sections 8 Sections

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 1,524,232 bytes 1,524,736 bytes 6.04 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ D31AC9B6D81D9AB8CD181DC2820761F8
.rdata 0x00176000 1,549,410 bytes 1,549,824 bytes 6.79 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ CEC45C2A62FF758C17860949F41CBB24
.data 0x002f1000 63,372 bytes 49,152 bytes 7.70 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE E3AF2088F5834839D82F15303CA80C65
.pdata 0x00301000 82,344 bytes 82,432 bytes 7.93 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ D438027F4CB097E39BA0BC6163C9D1B1
.vmp0 0x00316000 1,425,914 bytes 1,425,920 bytes 7.09 (Compressed) IMAGE_SCN_CNT_CODE|IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ B5147F03CE157CDF694D0B89C498CFAB
.vmp1 0x00473000 2,148,288 bytes 2,148,352 bytes 7.47 (Compressed) IMAGE_SCN_CNT_CODE|IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_NOT_PAGED|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 271F23C5B364CA092D3AF72E5D87E315
.reloc 0x00680000 3,972 bytes 4,096 bytes 5.47 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 94C6BEF895D2F77146FEB7FDB4BDB2C2
.rsrc 0x00681000 152,284 bytes 152,576 bytes 1.41 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ A27FA9807C3F6ACC304139263FCD1CBB
Entropy Analysis Alert

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

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

Resource Analysis

▼
Total Resources: 2 (152,124 bytes)
Resource Type Count Total Size Percentage
RT_ICON 1 152,104 bytes
100%
RT_GROUP_ICON 1 20 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.Win64.Downloader.oa!s1 Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win64.Downloader.oa!s1 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.

Leave a Comment

Share your thoughts or insights about this file. Do you align with our conclusion?

Your feedback could influence our rating, and rest assured, your email will remain confidential and will only be used to communicate with you if necessary.

Your Score for
/

Gridinsoft Anti-Malware

Stay Malware-Free: Keep Your PC Protected with Gridinsoft Anti-Malware

Gridinsoft Anti-Malware offers just that—peace of mind with a robust, user-friendly solution that’s constantly updated to combat the latest threats. Designed by cybersecurity experts, it provides real-time protection and effortless malware removal. It’s not just about detecting threats; it's about enhancing your digital life with uninterrupted security. Give it a try and experience what it feels like to browse worry-free!

Gridinsoft Anti-Malware Download Now
Gridinsoft Anti-Malware