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GameSR.exe Trojan Downloader Analysis

Updated 25 days ago
Checked by Malware Check
gameSR.exe

Technical Analysis

File Name gameSR.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
Scanner Version 1.0.231.174
Database Version 2025-12-15 03:00:23 UTC
⚠

Trojan.Win32.Downloader.oa!s2

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
259,584
File Size (bytes)
2025-12-15
Analysis Date

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File Identification

Hash Type Value Action
MD5
a554824b371f5ae670a88a1fb8fb64ab
SHA1
bcf58555baa157b0f092f5840660cded0b6cfd28
SHA256
78eab970b7050fd666c3fb50ebe94d1d6260711b4903de51ecc088c85960509a
SHA512
1f2f869baeb29f8fb82368e4ff45bfb8e8473c30ade1c5b2fd3cdfe862d063b4f9062323f2fbd45d56d7772e4bd951294c290350149a9f13fb69cb147f799d9a
ImpHash
7045005ef4130348fa4cbfc30a6f9d04

PE Analysis

Basic Information

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Icon
Hash: f7f730b100c438a3d66abd8f1122d731
Fuzzy: 08c175261cf5e1460d2b61a809ab8e74
dHash: b789e955dc522505
Image Base 0x00400000
Entry Point 0x0044d390
Compilation Time 2016-05-27 14:05:04
Checksum 0x00000000 (Actual: 0x0003f7be)
OS Version 4.0
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
Digital Signature No valid SignedData structure was found.
Imports 9 libraries
KERNEL32, COMCTL32, GDI32, MSVCRT, OLE32, SHELL32, SHLWAPI, USER32, WINMM
Exports 0 functions
Resources 12 Resources
Sections 3 Sections

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
UPX0 0x00001000 282,624 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_UNINITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE D41D8CD98F00B204E9800998ECF8427E
UPX1 0x00046000 32,768 bytes 32,768 bytes 7.95 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 0B63DD2B30FB82232FF9225908764797
.rsrc 0x0004e000 229,376 bytes 226,304 bytes 6.99 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 54BEA62E2B84AA39894821B8B5DB33A8
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

Resource Analysis

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Total Resources: 12 (224,400 bytes)
Resource Type Count Total Size Percentage
RT_ICON 7 223,640 bytes
99.7%
RT_RCDATA 3 45 bytes
0%
RT_GROUP_ICON 1 104 bytes
0%
RT_MANIFEST 1 611 bytes
0.3%

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.oa!s2 Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win32.Downloader.oa!s2 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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