EvilLock Ransomware
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Popularity Rank: | 18,150 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 9 |
| First Seen: | February 1, 2017 |
| Last Seen: | February 21, 2026 |
| OS(es) Affected: | Windows |
The EvilLock Ransomware is a ransomware Trojan that is used to encrypt the victims' files. The EvilLock Ransomware does this so that the people responsible for the attack can then demand a ransom payment in exchange for the decryption key, needed to recover the affected files. Take precautions to ensure that your computer is well protected against ransomware Trojans like the EvilLock Ransomware.
Another 'Evil' that Locks Your Files
The EvilLock Ransomware is designed to encrypt files. There are several versions of the EvilLock Ransomware. The newest of these can be identified easily because files that are encrypted during the EvilLock Ransomware will have the extension '.EvilLock,' which is added to each affected file's name. The victims of the EvilLock Ransomware attack are instructed to contact the con artists responsible for the attack at the email address gena1983@mbx.kz to receive information about the attack and how to pay to receive the decryption key. In most cases, the EvilLock Ransomware is delivered to the victims' computers through spam email messages containing corrupted email attachments. Because of this, computer users need to take precautions online and ensure that their computers are well protected against these intrusions.
The EvilLock Ransomware Uses a Highly Effective Attack Method
Unfortunately, the EvilLock Ransomware carries out an effective attack that may lead computer users with no choice but to pay the ransom. The EvilLock Ransomware is written using JavaScript and may be delivered through corrupted macro scripts that can be embedded in numerous seemingly harmless files. Once the EvilLock Ransomware infects a computer, it makes a list of the affected files on the victim's computer. The EvilLock Ransomware encrypts these files using the AES 256 encryption and locks them completely to prevent the victim from accessing the affected files. The EvilLock Ransomware then communicates with its Command and Control server to relay information about the infected computer and receive instructions from the attacker. Unfortunately, the EvilLock Ransomware's encryption method is effective; the files encrypted by the EvilLock Ransomware will no longer be accessible without the decryption key, which will be in possession of the people responsible for the attack.
The EvilLock Ransomware delivers its ransom note in the form of a text and an HTML file, both dropped on the infected computer's Desktop. These files, named 'HOW_TO_DECRYPT_YOUR_FILES.HTML' and 'HOW_TO_DECRYPT_YOUR_FILES.TXT' contain the following message:
'As you can see some of your files have been encrypted!
Encryption was made using a unique strongest AES key. If you want to restore your files you need to BUY the key, it costs 0.3 BTC. Send me your ID gena1983@mbx.kz'
Preventing the EvilLock Ransomware Attacks and Protecting Your Computer
Once the EvilLock Ransomware has managed to encrypt your files, the damage will already be done, and the recovery of the infected files is impossible currently. Because of this, having backup copies of all your files is a must do. In fact, this is the single best measure can make you invulnerable to attacks like the EvilLock Ransomware completely. If the infected files can be recovered from a backup copy on the cloud or an external memory device, then the people responsible for the EvilLock Ransomware attack lose any leverage that allows them to demand a ransom payment from the victim. Apart from backup copies, you should have a reliable security program that is fully up-to-date. This can help intercept the EvilLock Ransomware before it causes any damage and also alert the victim if a ransomware attack is being carried out.
Since the EvilLock Ransomware and similar ransomware Trojans may be distributed using corrupted email attachments, caution when handling email is paramount to ensure that these infections don't enter your computer. Because of this, employees and individuals that could put a business at risk through a corrupted email attachment should be educated. Avoid unsolicited email attachments and always confirm the contents of an email attachment before downloading its contents.
Analysis Report
General information
| Family Name: | Trojan.Ismdoor.A |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
2fa0f43bac18de2236b50c5b1610edd7
SHA1:
869b9ccd359164e6eb82085dab27af9fa6e12f38
SHA256:
36C54515572D26D4DECA1E78190BCEF09EECAB0B82794FDC75A7BC69D3FC8905
File Size:
1.73 MB, 1730048 bytes
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MD5:
6d2b2376bfbb71e2f22bb91277493f0d
SHA1:
07de09683389b8e2ff71e5c602d43bb1783f026c
SHA256:
81A161D57BED5EDC24AD254A67226CD52230E5BE8E1D20A6B3D7D50D482B5988
File Size:
413.70 KB, 413696 bytes
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MD5:
29b3b99f7996fb6cd6b5ac154e3a6d1e
SHA1:
407d435221cecb7bbe2009a0622a17eb7309aafb
SHA256:
EFD438237D7E278D9AFC0801187163F16893AD37A12BE359764B1530066B9D3F
File Size:
1.42 MB, 1421824 bytes
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MD5:
66316bcba5b812c4979d52202a61d8cc
SHA1:
c4994dd0dcb565917e5a3a4bcec967dbc0200b95
SHA256:
11EAA46938CF254168C636302484CC4AB9B90A887ED04B97E26B787BE73E52D5
File Size:
173.06 KB, 173056 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have exports table
- File doesn't have security information
- File has exports table
- File is 32-bit executable
- File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is Native application (NOT .NET application)
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- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Icons
File Icons
This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.
Windows PE Version Information
Windows PE Version Information
This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.| Name | Value |
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| Company Name |
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| File Description |
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| File Version |
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| Internal Name |
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| Legal Copyright |
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| Original Filename |
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| Product Name |
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| Product Version |
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File Traits
- dll
- HighEntropy
- x86
Block Information
Block Information
During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.| Total Blocks: | 453 |
|---|---|
| Potentially Malicious Blocks: | 2 |
| Whitelisted Blocks: | 230 |
| Unknown Blocks: | 221 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
Similar Families
Similar Families
This section lists other families that share similarities with this family, based on EnigmaSoft’s analysis. Many malware families are created from the same malware toolkits and use the same packing and encryption techniques but uniquely extend functionality. Similar families may also share source code, attributes, icons, subcomponents, compromised and/or invalid digital signatures, and network characteristics. Researchers leverage these similarities to rapidly and effectively triage file samples and extend malware detection rules.- Ismdoor.A
Windows API Usage
Windows API Usage
This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.| Category | API |
|---|---|
| Syscall Use |
Show More
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| Process Shell Execute |
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| Anti Debug |
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| Process Manipulation Evasion |
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Shell Command Execution
Shell Command Execution
This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.
C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\869b9ccd359164e6eb82085dab27af9fa6e12f38_0001730048.,LiQMAxHB
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C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\c4994dd0dcb565917e5a3a4bcec967dbc0200b95_0000173056.,LiQMAxHB
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