MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 749f17c6f9adb9378036f3e7c86cc5f7de353f0a8fbbe06d247d8ded4b198024. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
QuasarRAT
Vendor detections: 14
| SHA256 hash: | 749f17c6f9adb9378036f3e7c86cc5f7de353f0a8fbbe06d247d8ded4b198024 |
|---|---|
| SHA3-384 hash: | c2407bba9fbfe28fcae5006357f1e0e77f159ae72a4edcdf45d4fd16e7ae55347eaab5f74ea98e934fd72d6db64229a9 |
| SHA1 hash: | 9c423a866056a5eee6aff804ec398fd1daa320b0 |
| MD5 hash: | dffb1a80b478657a9b34af4c62d8a365 |
| humanhash: | timing-don-island-south |
| File name: | Client-built_ultra_protected.exe |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 14'627'597 bytes |
| First seen: | 2025-05-28 22:42:25 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 965e162fe6366ee377aa9bc80bdd5c65 (44 x BlankGrabber, 9 x Efimer, 7 x PythonStealer) |
| ssdeep | 196608:N0h8B24iMqWNo2mtKVNXMCHGLLc54i1wN+6fV0cSXl74w40wqQyH52:w8B2JtWNhqKVNXMCHWUjQVg74w9rQ48 |
| Threatray | 46 similar samples on MalwareBazaar |
| TLSH | T17DE633189AA47DB7D4B2833ED092ED2EE63179250BE6E6D743E550571F23380AC37B81 |
| TrID | 66.6% (.EXE) InstallShield setup (43053/19/16) 16.2% (.EXE) Win64 Executable (generic) (10522/11/4) 7.7% (.EXE) Win16 NE executable (generic) (5038/12/1) 3.1% (.EXE) OS/2 Executable (generic) (2029/13) 3.0% (.EXE) Generic Win/DOS Executable (2002/3) |
| Magika | pebin |
| dhash icon | c6c2ccc4f4e0e0f8 (37 x PythonStealer, 21 x CrealStealer, 19 x Empyrean) |
| Reporter |  BastianHein |
| Tags: | exe QuasarRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
613
Origin country :
CLVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Client-built_ultra_protected.exe
Verdict:
Malicious activity
Analysis date:
2025-05-28 22:45:15 UTC
Tags:
python evasion pyinstaller crypto-regex rust
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
99.9%
Tags:
installer vmdetect extens remo
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file
Restart of the analyzed sample
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Сreating synchronization primitives
Connecting to a non-recommended domain
Connection attempt
Sending a custom TCP request
DNS request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
base64 expand lolbin microsoft_visual_cc overlay overlay packed packed packer_detected
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Verdict:
Unknown
Result
Threat name:
Quasar
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus detection for dropped file
Contains functionality to infect the boot sector
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Score:
97%
Verdict:
Malware
File Type:
PE
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
quasarrat
Similar samples:
+ 36 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:quasar botnet:office04 pyinstaller spyware trojan
Behaviour
Modifies system certificate store
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Executes dropped EXE
Loads dropped DLL
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
45.138.16.192:4782
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
749f17c6f9adb9378036f3e7c86cc5f7de353f0a8fbbe06d247d8ded4b198024
MD5 hash:
dffb1a80b478657a9b34af4c62d8a365
SHA1 hash:
9c423a866056a5eee6aff804ec398fd1daa320b0
Malware family:
QuasarRAT
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
YARA Signatures
MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.
| Rule name: | crime_win32_ransom_avaddon_1 |
|---|---|
| Author: | @VK_Intel |
| Description: | Detects Avaddon ransomware |
| Reference: | https://twitter.com/VK_Intel/status/1300944441390370819 |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerException__SetConsoleCtrl |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | PyInstaller |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies executable converted using PyInstaller. This rule by itself does NOT necessarily mean the detected file is malicious. |
| Rule name: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP) |
| Rule name: | upxHook |
|---|---|
| Author: | @r3dbU7z |
| Description: | Detect artifacts from 'upxHook' - modification of UPX packer |
| Reference: | https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/ |
| Rule name: | vmdetect |
|---|---|
| Author: | nex |
| Description: | Possibly employs anti-virtualization techniques |
| Rule name: | Warp |
|---|---|
| Author: | Seth Hardy |
| Description: | Warp |
| Rule name: | WarpStrings |
|---|---|
| Author: | Seth Hardy |
| Description: | Warp Identifying Strings |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
BLint
The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.
Findings
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (FORCE_INTEGRITY) | high |
Reviews
| ID | Capabilities | Evidence |
|---|---|---|
| AUTH_API | Manipulates User Authorization | ADVAPI32.dll::ConvertSidToStringSidW ADVAPI32.dll::ConvertStringSecurityDescriptorToSecurityDescriptorW |
| SECURITY_BASE_API | Uses Security Base API | ADVAPI32.dll::GetTokenInformation |
| WIN32_PROCESS_API | Can Create Process and Threads | KERNEL32.dll::CreateProcessW ADVAPI32.dll::OpenProcessToken KERNEL32.dll::CloseHandle |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetDriveTypeW KERNEL32.dll::GetStartupInfoW KERNEL32.dll::GetCommandLineW KERNEL32.dll::GetCommandLineA |
| WIN_BASE_EXEC_API | Can Execute other programs | KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetConsoleCtrlHandler KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleMode KERNEL32.dll::GetConsoleOutputCP |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::FindFirstFileW KERNEL32.dll::RemoveDirectoryW KERNEL32.dll::SetDllDirectoryW |
| WIN_USER_API | Performs GUI Actions | USER32.dll::PeekMessageW USER32.dll::CreateWindowExW |
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