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Calc.exe Ransomware Gen Analysis

Updated 9 months ago
Checked by Malware Check
calc.exe

Technical Analysis

File Name calc.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
Scanner Version 1.0.191.174
Database Version 2024-10-01 23:00:32 UTC
⚠

Ransom.Win32.Gen.oa!s2

Malware family: Gen

This is a generic detection identifier for files exhibiting Trojan horse characteristics. It indicates malware that disguises itself as legitimate software while containing malicious code designed to compromise system security or steal information.
N/A
Detection Rate
206,377
File Size (bytes)
2024-10-02
Analysis Date

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File Identification

Hash Type Value Action
MD5
2f9fdad776d8626f2ce8625211831e91
SHA1
21d8413eb0d60b36fc249f8025c277b557fefde3
SHA256
9b66a8ea0f1c64965b06e7a45afbe56f2d4e6d5ef65f32446defccbebe730813
SHA512
2abd61c6bea7c748f81cdd18133582217bd06dd19506f13f89953f8c7bd662fc5233540b9f56c57aa94e038c674128fc46dd280e2f7db642343fc5a45da25feb
ImpHash
fd50eeaa7137498c4740b429b41a482e

PE Analysis

Basic Information

▼
Icon
Hash: 4a6a5cfa8f05c6ef543ef1f71ab5154d
Fuzzy: 4dab8cf0e802417f9cc5084bb5970354
dHash: ccd4f0d4d4d4d4e0
Image Base 0x00400000
Entry Point 0x00488080
Compilation Time 2007-05-25 14:27:07
Checksum 0x00000000 (Actual: 0x0003bd53)
OS Version 4.0
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
Digital Signature The PE file does not contain a certificate table.
Imports 13 libraries
Exports 0 functions
Resources 16 Resources
Sections 3 Sections

Version Information

▼
FileDescription
FileVersion 3, 2, 4, 9
CompiledScript AutoIt v3 Script : 3, 2, 4, 9
Translation 0x0809 0x04b0

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
UPX0 0x00001000 356,352 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 0x00058000 200,704 bytes 197,632 bytes 7.92 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 3820B49F074DE0D36C50A7BABB2200ED
.rsrc 0x00089000 8,192 bytes 4,608 bytes 4.44 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE D8312EC9AFBA4F967D7C2E34B8B3E76F
Entropy Analysis Alert

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

Resource Analysis

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Total Resources: 16 (11,401 bytes)
Resource Type Count Total Size Percentage
RT_ICON 3 1,336 bytes
11.7%
RT_MENU 1 80 bytes
0.7%
RT_DIALOG 1 252 bytes
2.2%
RT_STRING 6 8,330 bytes
73.1%
RT_GROUP_ICON 3 60 bytes
0.5%
RT_VERSION 1 412 bytes
3.6%
RT_MANIFEST 1 931 bytes
8.2%

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

The PE file does not contain a certificate table.

Recommendation: Verify the file source and ensure it comes from a trusted publisher.

Ransom.Win32.Gen.oa!s2 Removal

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