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Ransomware.CryptoLocker.exe Ransomware Blocker Analysis

Updated 1 month ago
Checked by Malware Check
Ransomware.CryptoLocker.exe

Technical Analysis

File Name Ransomware.CryptoLocker.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.229.174
Database Version 2025-11-30 16:00:30 UTC
⚠

Ransom.Win32.Blocker.oa!s1

Malware family: Blocker

N/A
Detection Rate
346,112
File Size (bytes)
2025-11-30
Analysis Date

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File Identification

Hash Type Value Action
MD5
04fb36199787f2e3e2135611a38321eb
SHA1
65559245709fe98052eb284577f1fd61c01ad20d
SHA256
d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
SHA512
533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
ImpHash
7e8ad4139efc6cbcf31df3bc4b291dd8

PE Analysis

Basic Information

▼
Icon
Hash: 89aebf164516587d1cc1c636235e21f8
Fuzzy: 4e45950bd5e225979ce470c967899602
dHash: 6533b1c3717d4e57
Image Base 0x00400000
Entry Point 0x00401e00
Compilation Time 2013-09-07 14:57:57
Checksum 0x00000000 (Actual: 0x0005ee97)
OS Version 5.1
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 14 libraries
Exports 0 functions
Resources 20 Resources
Sections 5 Sections

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 64,144 bytes 64,512 bytes 6.34 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ E2EDDCBFF3691B5D95330D475712A82E
.rdata 0x00011000 17,896 bytes 17,920 bytes 4.87 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 8AD708C60F15D409737A942CB70145DC
.data 0x00016000 3,876 bytes 512 bytes 2.10 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE C14DF587968AE58C77D5DBCA030FAA77
.rsrc 0x00017000 253,816 bytes 253,952 bytes 7.97 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 1AE9ADDDCDACD2A7E8294A2F0E85EB99
.reloc 0x00055000 7,996 bytes 8,192 bytes 4.89 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ 60324B2F4248EF2C2290B7A371BF1301
Entropy Analysis Alert

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

Resource Analysis

▼
Total Resources: 20 (252,652 bytes)
Resource Type Count Total Size Percentage
RT_ICON 2 5,392 bytes
2.1%
RT_DIALOG 5 676 bytes
0.3%
RT_RCDATA 11 245,910 bytes
97.3%
RT_GROUP_ICON 1 34 bytes
0%
RT_MANIFEST 1 640 bytes
0.3%

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.

Ransom.Win32.Blocker.oa!s1 Removal

Gridinsoft has the capability to identify and eliminate Ransom.Win32.Blocker.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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