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Caesium-image-compressor-2.8.5.exe Trojan Agent Analysis

Updated 29 days ago
Checked by Malware Check
caesium-image-compressor-2.8.5.exe

Technical Analysis

File Name caesium-image-compressor-2.8.5.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.230.174
Database Version 2025-12-11 05:00:33 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
20,760,418
File Size (bytes)
2025-12-11
Analysis Date

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File Identification

Hash Type Value Action
MD5
939eb9cb6a334e09b4d436bad786525a
SHA1
60bc0bced83f1347dad5a5c0a9255ca18f467e92
SHA256
ab7086287d36c682c0ff9c5ed1b0e178a2fef38cc6b0c6a152e2e5b6c99917bc
SHA512
a19b8f552c924e65435eaba2c4c17e5f895ee770855bd92a7ce65e8c880f28123bec0724a54cabca74735c92bc4c08424f10bbbd59e89d6ecc45a1664ec5d348
ImpHash
5bd573f582c0c20abf62c75fa0eba519

PE Analysis

Basic Information

▼
Icon
Hash: 1eb87eb3cb198006e836407d81b921a9
Fuzzy: fdf6dcd67d08aa51d6b1310cbbd48207
dHash: f0d89af0c0d0f8e8
Image Base 0x00400000
Entry Point 0x004b0af6
Compilation Time 2023-04-22 09:09:47
Checksum 0x0018bdcd (Actual: 0x013d9c2c)
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
SHLWAPI, KERNEL32, USER32, GDI32, ADVAPI32, SHELL32, OLEAUT32, VERSION, SETUPAPI
Exports 18 functions
Resources 17 Resources
Sections 4 Sections

Version Information

▼
CompanyName SaeraSoft
FileDescription Caesium Image Compressor
FileVersion 1.0.0
InternalName Cs-133
ProductName Caesium Image Compressor
ProductVersion 2.8.5
Translation 0x0c0a 0x0c01

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 779,533 bytes 779,776 bytes 6.65 (Compressed) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ EFE06F2CA83E6BFDF30E9590E7F6A9AB
.rdata 0x000c0000 106,016 bytes 106,496 bytes 5.58 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 144415993793507F91756758E609E37A
.data 0x000da000 18,744 bytes 7,168 bytes 4.48 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 3BA341C53F5E7E542D051FEEE9E55D61
.rsrc 0x000df000 706,736 bytes 707,072 bytes 7.42 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 2A2ECC1784C78C0BD959EF6EC0E10457
Entropy Analysis Alert

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

Resource Analysis

▼
Total Resources: 17 (705,735 bytes)
Resource Type Count Total Size Percentage
SCRIPT 2 585,959 bytes
83%
RT_ICON 6 116,660 bytes
16.5%
RT_DIALOG 6 898 bytes
0.1%
RT_GROUP_ICON 1 90 bytes
0%
RT_VERSION 1 600 bytes
0.1%
RT_MANIFEST 1 1,528 bytes
0.2%

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.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. 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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