Threat Database Trojans Trojan.InstallRex.A

Trojan.InstallRex.A

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 13,096
Threat Level: 80 % (High)
Infected Computers: 870
First Seen: March 9, 2022
Last Seen: May 20, 2026
OS(es) Affected: Windows

The detection of Trojan.InstallRex.A on your system indicates a potential security threat that requires immediate attention. Trojan horses, like Trojan.InstallRex.A, are malicious programs that can cause significant damage to your computer and compromise your personal data. It is essential to understand the nature of this threat and take prompt action to remove it and prevent future infections.

What Is Trojan.InstallRex.A?

Trojan horses are a type of malware that disguises itself as legitimate software, allowing it to bypass security measures and gain unauthorized access to a computer system. The name Trojan.InstallRex.A suggests that it is a Trojan-type threat, but without more specific information, it is difficult to determine its exact characteristics or behavior. However, it is clear that this malware poses a significant risk to your system's security and integrity.

How Trojan.InstallRex.A Operates

Generally, Trojan horses operate by exploiting vulnerabilities in software or tricking users into installing them. Once installed, they can perform a variety of malicious actions, such as stealing sensitive information, installing additional malware, or providing unauthorized access to the infected system. Trojan horses can also be used to disrupt system operation, causing crashes, freezes, or other problems. The exact mechanisms used by Trojan.InstallRex.A are unknown, but it is likely that it follows similar patterns of behavior.

Symptoms of Infection

Systems infected with Trojan.InstallRex.A may exhibit a range of symptoms, including unusual system behavior, slow performance, or unexplained changes to system settings. You may also notice unfamiliar programs or icons on your desktop, or receive unexpected warnings or alerts. In some cases, the infection may not produce any noticeable symptoms, making it difficult to detect without the use of specialized security software.

  • Unexplained system crashes or freezes
  • New, unfamiliar programs or icons
  • Changes to system settings or configuration
  • Slow system performance or responsiveness
  • Unexpected warnings, alerts, or pop-ups

How to Remove Trojan.InstallRex.A

  1. Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow for easier removal.
  2. Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system and detect any associated malware.
  3. Uninstall any suspicious programs or applications that may be related to the infection.
  4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
  5. Reboot your system and perform a follow-up scan to ensure that the malware has been completely removed.

Conclusion

Removing Trojan.InstallRex.A from your system requires careful attention to detail and a thorough understanding of the removal process. By following the steps outlined above and using reputable security software, you can help to ensure the complete removal of this malware and prevent future infections. Remember to always be cautious when installing new software or clicking on links from unknown sources, and to keep your security software up to date to protect against the latest threats.

Analysis Report

General information

Family Name: Trojan.InstallRex.A
Signature status: No Signature

Known Samples

MD5: 765050baf3bf6b2a023f72535b23c16e
SHA1: 4f56ffcfe4b534592c12f09aaffef8d6987df2e1
SHA256: CEA23E696368312A2B144AACDDCCB86B905B9A7062EE83777BD398780A6FB600
File Size: 64.51 KB, 64512 bytes
MD5: 2153b25d324bc2544773fe54d722a8fd
SHA1: cd707f2ca76913700597465594bf888f709b8f7c
SHA256: 2EDD498E907786E2103727E6933ED44B4699F76D14F25BB8470ADA436C594BB8
File Size: 35.33 KB, 35328 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have resources
  • File doesn't have security information
  • File has exports table
  • 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
Show More
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
Company Name StarApp
File Description Custom DLL for StarApp
File Version 2013.8.
Internal Name TixDll.dll
Legal Copyright Copyright © 2012 S
Original Filename TixDll.dll
Product Name StarApp
Product Version 1.0.0.1

File Traits

  • dll
  • HighEntropy
  • x86

Block Information

Total Blocks: 147
Potentially Malicious Blocks: 97
Whitelisted Blocks: 32
Unknown Blocks: 18

Visual Map

x x 0 0 ? x x x x x x 0 x ? x 0 ? x x x x ? x 0 x ? 0 x ? ? ? ? ? ? ? ? x x x ? ? x ? ? x ? x x x 0 0 0 0 x x x x x x x x x x x x x x 0 0 0 x x 0 0 0 0 x x x x x x x 0 0 x x 0 0 0 x x x x x x 0 x x x 0 x x x 0 0 x x x x 0 0 0 x x x x x x x x 0 x 0 0 x x x x x x x x x x x x x x x x x x x x x x
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

  • InstallRex.A

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtProtectVirtualMemory
Show More
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWriteFile
  • ntdll.dll!NtWriteVirtualMemory
  • win32u.dll!NtUserGetKeyboardLayout
  • win32u.dll!NtUserGetThreadState
Process Shell Execute
  • CreateProcess
Anti Debug
  • NtQuerySystemInformation
Process Manipulation Evasion
  • NtUnmapViewOfSection

Shell Command Execution

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\4f56ffcfe4b534592c12f09aaffef8d6987df2e1_0000064512.,LiQMAxHB
C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\cd707f2ca76913700597465594bf888f709b8f7c_0000035328.,LiQMAxHB

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