Threat Database Ransomware Phobos.A Ransomware

Phobos.A Ransomware

By CagedTech in Ransomware
Published:
Last updated:

Threat Scorecard

Popularity Rank: 20,454
Threat Level: 100 % (High)
Infected Computers: 5,760
First Seen: July 24, 2009
Last Seen: August 14, 2026
OS(es) Affected: Windows

The detection of Phobos.A Ransomware on a system indicates a serious security threat that requires immediate attention. Ransomware, in general, is a type of malware designed to encrypt files on a victim's device, demanding a ransom in exchange for the decryption key. The presence of this threat suggests that the system has been compromised, and sensitive data may be at risk.

What Is Phobos.A Ransomware?

Ransomware, like Phobos.A Ransomware, typically spreads through phishing emails, infected software downloads, or exploited vulnerabilities in operating systems or applications. Once inside a system, it begins to scan for files to encrypt, often targeting common file types such as documents, images, and videos. The encryption process renders these files inaccessible to the user, who is then presented with a ransom demand to restore access.

How Phobos.A Ransomware Operates

The operation of Phobos.A Ransomware involves sophisticated encryption algorithms that lock down files, making them unreadable without the decryption key. This malware may also have the capability to spread laterally within a network, infecting other devices and servers. The attackers behind the ransomware often use anonymous payment methods, such as cryptocurrencies, to receive ransom payments, making it difficult for law enforcement to trace the transactions.

In addition to file encryption, Phobos.A Ransomware may also steal sensitive information, such as login credentials or personal data, which can be used for further malicious activities. The malware may communicate with its command and control servers to report the infection and receive updates or commands from the attackers.

Symptoms of Infection

Symptoms of a Phobos.A Ransomware infection can include the inability to access files, the presence of ransom notes or demands, and significant slowdowns in system performance. Users may also notice unusual network activity or suspicious processes running in the background. In some cases, the malware may display fake alerts or warnings, attempting to deceive the user into paying the ransom or installing additional malware.

  • Files become inaccessible or are encrypted with a strange extension.
  • Ransom notes or demands are displayed on the screen or found in files.
  • System performance is significantly impacted, with slowdowns or frequent crashes.
  • Unusual network activity or unknown processes are observed.

How to Remove Phobos.A Ransomware

  1. Boot the system in Safe Mode with Networking to prevent the malware from loading and to allow for internet access.
  2. Perform a full scan of the system using a reputable anti-malware tool, such as SpyHunter, to detect and remove the malware and any associated files.
  3. Uninstall any suspicious programs or applications that may have been installed without the user's knowledge or consent.
  4. Reset web browsers like Chrome, Firefox, or Edge to their default settings to remove any malicious extensions or settings.
  5. Reboot the system and perform another full scan to ensure that all remnants of the malware have been removed.

Conclusion

The removal of Phobos.A Ransomware requires careful and immediate action to prevent further damage and potential data loss. It is crucial to follow the steps outlined above and to use reputable security tools to ensure the complete removal of the malware. Additionally, users should take preventive measures, such as regularly backing up important files, using strong antivirus software, and being cautious when opening emails or downloading software from the internet.

By understanding how Phobos.A Ransomware operates and taking the necessary steps to remove it, users can protect their systems and data from this and similar threats. It is also important to stay informed about the latest security threats and to keep operating systems, software, and security tools up to date to prevent infections.

File System Details

Phobos.A Ransomware may create the following file(s):
# File Name MD5 Detections
1. ~tmp1174.exe ff47c3fcc59b40f444c8fcfe48255f26 0

Analysis Report

General information

Family Name: Phobos.A Ransomware
Signature status: No Signature

Known Samples

MD5: c195c03f2c8174f21b45d95edb6dc7d8
SHA1: a5bea88670139e3df7c5e97cc15f5411a12bfc6c
SHA256: 784A9889DC9CBD9DD0E2BEC961E427CF91DEBA20F060E564E22FC7538D8EEE8B
File Size: 62.46 KB, 62464 bytes

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 is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is Native application (NOT .NET application)
  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
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  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • HighEntropy
  • No Version Info
  • x86

Block Information

Total Blocks: 210
Potentially Malicious Blocks: 53
Whitelisted Blocks: 157
Unknown Blocks: 0

Visual Map

0 x 0 0 x x x x x x x x x 0 0 x x x x x x x x x x x x x x x x x 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 2 2 1 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 1 0 0 0 0 0 0 0 1 0 1 2 0 x x 0 0 x x x x 0 0 x x x x 0 x x x x 0 x x x x x x x x x x x 0 x
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Files Modified

File Attributes
c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.1.regtrans-ms Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.2.regtrans-ms Generic Read,Write Data,Write Attributes,Write extended,Append data