Threat Database Trojans Trojan.Kryptik.BDRC

Trojan.Kryptik.BDRC

By CagedTech in Trojans
Published:

Threat Scorecard

Popularity Rank: 26,510
Threat Level: 80 % (High)
First Seen: October 1, 2026
Last Seen: October 25, 2026
OS(es) Affected: Windows

Trojan.Kryptik.BDRC is a Windows-based Trojan that disguises itself as legitimate software to sneak onto computers and carry out malicious actions behind the scenes. It is considered a high-risk threat because of the broad control it can give attackers over an infected system once it is active.

What Trojan.Kryptik.BDRC Does

Once installed, Trojan.Kryptik.BDRC runs silently in the background, often masquerading as a trusted application component, such as a software updater or installer, to avoid raising suspicion. This particular sample was observed presenting itself as a "Google Installer," complete with file details that mimic a legitimate update utility, even though it is self-signed rather than verified by a trusted authority. Behind this disguise, the Trojan can perform a range of harmful functions, including giving remote attackers the ability to take control of the infected system. It may also covertly delete files, install additional malicious components, and modify system files to maintain its presence. The malware has been seen dropping and executing files in system folders and launching processes with command-line parameters that point to downloaded files, a technique often used to stage or activate further payloads without the user's knowledge.

How It Usually Gets Onto Computers

Trojan.Kryptik.BDRC typically spreads by exploiting system vulnerabilities and security flaws. It is commonly bundled with software downloaded from malicious or compromised websites, or delivered through email attachments from untrusted or unknown senders. These attachments are often disguised with familiar file extensions, such as .exe, .pif, .avi, or even .jpg, to trick users into opening them. Because the Trojan can imitate the branding and file properties of well-known software, users may unknowingly install it while believing they are downloading a legitimate program or update.

Risks for the User

The danger level associated with this Trojan is high, reflecting the serious consequences it can have for victims. If it gains a foothold, attackers may be able to remotely access and control the infected machine, steal sensitive data, delete or alter important files, and install further malware without the user's consent. The Trojan's ability to run quietly in the background means a system can remain compromised for an extended period before any damage becomes apparent, increasing the risk of data loss, financial harm, or further infections.

Signs of Infection

Because this type of Trojan is designed to operate stealthily, obvious warning signs can be scarce. Users should watch for unexpected new files or folders appearing in system directories, unfamiliar processes launching automatically, unusual network activity, sluggish system performance, or security tools behaving erratically. Unexpected installer or updater files that do not match the software they claim to represent can also be a red flag.

How to Stay Protected

To reduce the risk of infection, avoid downloading software from unofficial or unverified websites, and never open email attachments from unknown or unexpected senders, regardless of the file extension shown. Keep the operating system and installed applications fully updated to close known security vulnerabilities that Trojans like this one often exploit. Regularly back up important files, use a reputable and up-to-date security solution to scan the system, and be cautious of installers or updaters that appear outside their normal update channels, since genuine software updates are typically delivered through the application itself rather than through downloads or email links.

Analysis Report

General information

Family Name: Trojan.Kryptik.BDRC
Signature status: Self Signed

Known Samples

MD5: f212b23bfe6f985fae67f335d2a9c3ca
SHA1: 55af3e62ebf5ae3f593ba293e76bbac23f509608
SHA256: 8D0EB5CD051E5098B7311C59D5D75C03CB6CA16F2436C83756BF2A775499731B
File Size: 2.24 MB, 2240928 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have exports table
  • File has TLS information
  • File is 64-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 Icons

Windows PE Version Information

Name Value
Build Id 27AFE00AEC4AB099B4D928E8686B5750
Company Name Google LLC
File Description Google Installer (x86)
File Version 152.0.7563.72
Internal Name Google Installer (x86)
Legal Copyright Copyright 2026 Google LLC. All rights reserved.
Original Filename UpdaterSetup.exe
Product Name Google Installer (x86)
Product Version 152.0.7563.72

Digital Signatures

Signer Root Status
Chrome Setup Chrome Setup Self Signed

File Traits

  • big overlay
  • Installer Version
  • x64

Block Information

Total Blocks: 507
Potentially Malicious Blocks: 142
Whitelisted Blocks: 197
Unknown Blocks: 168

Visual Map

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

Files Modified

File Attributes
c:\programdata\google\update\googleupdate.exe Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144
c:\programdata\google\update\googleupdate.exe Synchronize,Write Attributes
c:\programdata\google\update\gupdater2.dll Generic Write,Read Attributes
c:\programdata\google\update\gupdater2.dll Synchronize,Write Attributes

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtClose
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtGetContextThread
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationThread
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  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTerminateProcess
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtWriteFile
  • UNKNOWN
Process Manipulation Evasion
  • NtUnmapViewOfSection
Process Shell Execute
  • CreateProcess

Shell Command Execution

"C:\ProgramData\Google\Update\GoogleUpdate.exe"
"C:\ProgramData\Google\Update\GoogleUpdate.exe" -d "c:\users\user\downloads\55af3e62ebf5ae3f593ba293e76bbac23f509608_0002240928"