Threat Database Backdoors Backdoor.Orcus.RA

Backdoor.Orcus.RA

By CagedTech in Backdoors
Published:
Last updated:

Threat Scorecard

Popularity Rank: 26,433
Threat Level: 60 % (Medium)
Infected Computers: 2
First Seen: July 22, 2026
Last Seen: October 4, 2026
OS(es) Affected: Windows

Backdoor.Orcus.RA is a backdoor-type threat designed to give attackers covert, unauthorized remote access to an infected Windows computer. Like other members of the backdoor category, it operates quietly in the background, allowing a remote operator to control the machine, monitor the user, and manipulate data without the victim's knowledge or consent. Its presence poses a serious risk to both personal privacy and system security.

What Backdoor.Orcus.RA Does

Once active on a system, Backdoor.Orcus.RA establishes a hidden channel of communication between the infected computer and a remote attacker. Through this connection, cybercriminals can typically issue commands to the compromised machine, allowing them to browse and transfer files, install additional malicious software, capture screenshots, log keystrokes, or monitor user activity in real time. Many backdoors of this type are also capable of modifying system settings, disabling security features, and maintaining persistence so that the malicious program continues running even after the computer is restarted.

Because backdoors are built for stealth, Backdoor.Orcus.RA is designed to avoid detection by blending in with legitimate system processes, hiding its files, and limiting any visible symptoms that might alert the user to its presence.

How It Usually Gets Onto Computers

Backdoor threats like this one are rarely installed directly by the victim. Instead, they are typically delivered through deceptive means such as malicious email attachments, bundled software downloads, cracked or pirated applications, fake software updates, or links to compromised websites. In many cases, the backdoor is dropped onto the system by another piece of malware, such as a trojan, worm, or malicious downloader, which first breaches the computer and then silently installs the backdoor component. Users who download software from unofficial sources or click on unsolicited links and attachments are at heightened risk of encountering this type of infection.

Risks for the User

The presence of Backdoor.Orcus.RA on a computer can lead to severe consequences. Because the attacker effectively gains remote control over the machine, sensitive information such as passwords, banking details, personal files, and browsing history can be stolen or exposed. The backdoor can also be used as a launching point for further attacks, including the installation of additional malware, participation in botnets, or the deployment of ransomware. In some cases, the compromised system may be used to attack other computers or networks, making the victim an unwitting participant in larger cybercriminal operations.

Signs of Infection

Because backdoors are built to operate covertly, infections can be difficult to notice. However, users may observe warning signs such as unusual network activity, unexplained slowdowns in system performance, programs opening or closing without user input, unfamiliar processes running in the background, security software being disabled unexpectedly, or increased data usage. Any of these symptoms, especially in combination, can indicate the presence of a hidden threat like Backdoor.Orcus.RA.

How to Stay Protected

To reduce the risk of backdoor infections, users should avoid downloading software from untrusted or unofficial sources, refrain from opening email attachments or links from unknown senders, and keep their operating system and installed applications updated with the latest security patches. Using reputable anti-malware tools to regularly scan the system, enabling firewalls, and practicing caution when browsing unfamiliar websites can also help prevent backdoors like Backdoor.Orcus.RA from gaining a foothold on a computer.

Analysis Report

General information

Family Name: Backdoor.Orcus.RA
Signature status: No Signature

Known Samples

MD5: f5620301a852f67580b5619de61b22c3
SHA1: b8fdbe22dc5469e8fb3ade4e67a1b6f868085f83
SHA256: 3607E07B19E169EA6DBAAEA3EB94081DDE52EE81ABBA98D6C33F2648506F9341
File Size: 197.63 KB, 197632 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have relocations information
  • File doesn't have security information
  • File is .NET application
  • File is 64-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • 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 Icons

Windows PE Version Information

Name Value
Assembly Version 0.0.0.0
File Version 0.0.0.0
Internal Name Yoga Shooting Beta.exe
Original Filename Yoga Shooting Beta.exe
Product Version 0.0.0.0

File Traits

  • .NET
  • HighEntropy
  • x64

Block Information

Total Blocks: 233
Potentially Malicious Blocks: 7
Whitelisted Blocks: 45
Unknown Blocks: 181

Visual Map

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

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcConnectPort
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
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  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDefaultLocale
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryFullAttributesFile
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationJobObject
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryLicenseValue
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQuerySystemInformation
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Anti Debug
  • IsDebuggerPresent