Sentinel.exe Trojan Agent Analysis

Updated 21 hours ago

Checked by Malware Check

Sentinel.exe

Technical Analysis

File Name	Sentinel.exe
File Type	PE32 executable (console) Intel 80386 (stripped to external PDB), for MS Windows
Scanner Version	1.0.257.174
Database Version	2026-10-18 09:07:04 UTC

⚠

Trojan.Win32.Agent.oa!s1

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

3,899,904

File Size (bytes)

2026-10-18

Analysis Date

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File Identification

Hash Type	Value	Action
MD5	4d4a29e98280a7d4bfb6fdc721c43b66
SHA1	8159b97489adad21c6a19ba815b6a571ec6f313b
SHA256	470b563ea0fc75bbaf62c2aa1bd82cf99a0b47a596aaa33a469401eb0896b72b
SHA512	feba7a04ced1d3d5baf7449e5b46d85cb35632b85645c6bb48dbb9accb2d48f39c56d2e5a9b03f8b317a486c099a8910ab9068bc87d266c79cf7c3c332650abe
ImpHash	51ecb2c9e42bac7962e4489bde292198

PE Analysis

Basic Information

▼

Image Base	`0x00400000`
Entry Point	`0x00401400`
Compilation Time	2025-08-06 23:40:42
Checksum	0x003c5367 (Actual: 0x003c5367)
OS Version	4.0
PEiD Signatures	`PE32 executable (console) Intel 80386 (stripped to external PDB), for MS Windows`
Digital Signature	No valid SignedData structure was found.
Imports	9 libraries ADVAPI32, DNSAPI, KERNEL32, msvcrt, ntdll, ole32, SHELL32, SHLWAPI, WS2_32
Exports	0 functions
Resources	1 Resources
Sections	8 Sections

PE Sections

▼

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Characteristics	MD5
`.text`	`0x00001000`	56,320 bytes	56,320 bytes	6.20 (Normal)	`IMAGE_SCN_CNT_CODE\|IMAGE_SCN_MEM_EXECUTE\|IMAGE_SCN_MEM_READ`	`BBA4924721C260A3E4048230E870C3C5`
`.data`	`0x0000f000`	3,830,996 bytes	3,831,296 bytes	6.88 (Compressed)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE`	`8AE4D2C29E3D319D724FF18283C10346`
`.rdata`	`0x003b7000`	4,124 bytes	4,608 bytes	4.25 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`65EF94C8BBAFF6B99AFD2EB2D606A817`
`.bss`	`0x003b9000`	2,644 bytes	0 bytes	0.00 (Normal)	`IMAGE_SCN_CNT_UNINITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE`	`D41D8CD98F00B204E9800998ECF8427E`
`.idata`	`0x003ba000`	3,164 bytes	3,584 bytes	4.87 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`0762E468B13D60E373D2CD74F2E44682`
`.tls`	`0x003bb000`	8 bytes	512 bytes	0.00 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE`	`BF619EAC0CDF3F68D496EA9344137E8B`
`.reloc`	`0x003bc000`	1,616 bytes	2,048 bytes	5.71 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_DISCARDABLE\|IMAGE_SCN_MEM_READ`	`C8F90B476594A4E8D7B4D76607FF4615`
`.rsrc`	`0x003bd000`	487 bytes	512 bytes	4.86 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`3BDAB8A3011C3E57B205491A163A74BC`

Entropy Analysis Alert

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

Resource Analysis

▼

Total Resources: 1 (399 bytes)

Resource Type	Count	Total Size	Percentage
RT_MANIFEST	1	399 bytes	100%

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.Agent.oa!s1 Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win32.Agent.oa!s1 without requiring further user intervention.

Download Anti-Malware

Removal Instructions

Follow these steps to completely remove the threat from your system

1
Get Gridinsoft Anti-Malware — it's a quick 2 MB download that won't slow down your PC.
2
Run the installer gsam-en-install.exe. The setup takes about 2 minutes and doesn't require a restart.
3
The app launches right after installation. You'll see the main dashboard with the scan button front and center.
4
Hit "Standard Scan" — this checks all the spots where malware typically hides: temp folders, browser data, startup programs, and system directories.
5
Once the scan finds this threat, click "Clean Now". The removal usually happens instantly, though some stubborn infections may need a reboot.
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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