Threat Database Trojans Trojan.InstallRex.A

Trojan.InstallRex.A

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 11,799
Threat Level: 80 % (High)
Infected Computers: 863
First Seen: March 9, 2022
Last Seen: March 15, 2026
OS(es) Affected: Windows

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
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  • 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
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  • 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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