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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3f7c663787c2a28ec9cef7721cedc83d6bdf75fff5a54745981686c7f355c71. 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: 15


Intelligence 15 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3f7c663787c2a28ec9cef7721cedc83d6bdf75fff5a54745981686c7f355c71
SHA3-384 hash: ad3c70a032179b72f3dbd800c91193de6874932dab51728be76b49405df56148e91a49692fbc3a8fd04999bda76dea16
SHA1 hash: 2654ead8fc44a3fd7ba658039f1de05de3467e18
MD5 hash: c5c6ccefaec1268d1e02dbd65719631c
humanhash: winter-hamper-fish-robin
File name:c5c6ccefaec1268d1e02dbd65719631c.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'655'406 bytes
First seen:2026-09-23 09:37:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'247 x AgentTesla, 20'516 x Formbook, 12'378 x SnakeKeylogger)
ssdeep 24576:0yzYqjHyzZ4achmNEQ3I1dfgaGZpIj0qjQoBmihntftnNxW6d9+8A8riMs6bOxb9:tLjSzigEQ3eWaMIQnogiht1j9+dxh
TLSH T1937533C9B7D9610DED8A66770DC2C59AEBFF24D84B4825DE1E7F105C4672202A842FF8
TrID 70.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.2% (.EXE) Win64 Executable (generic) (6522/11/2)
4.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon 2ab232b2b2d1b231 (4 x QuasarRAT)
Reporter abuse_ch
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
178
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-09-23 11:39:58 UTC
Tags:
pulsar rat
Link:
https://app.any.run/tasks/25100d8a-4943-421c-b309-a05934321fd4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/88567/
Detection(s):
SecuriteInfo.com.Trojan.StarterNET.10.21450.32122.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Creating a file
Creating a window
Сreating synchronization primitives
DNS request
Connection attempt
Unauthorized injection to a recently created process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm anti-vm entropy evasive obfuscated overlay packed packed
Link:
https://www.filescan.io/uploads/6ab39e0b3de7c15dbbb5b9d0/reports/023cd6ef-3302-4499-aa2e-7e7f7d753388/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a3f7c663787c2a28ec9cef7721cedc83d6bdf75fff5a54745981686c7f355c71
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-09-03T23:05:00Z UTC
Last seen:
2026-09-24T18:30:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/a3f7c663787c2a28ec9cef7721cedc83d6bdf75fff5a54745981686c7f355c71/results?tab=lookup
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b003a320-4861-4142-8372-a555a620c3db
Result
Threat name:
Clipboard Hijacker, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1976683
Signature
.NET source code contains potential unpacker
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)
Uses dynamic DNS services
Yara detected Clipboard Hijacker
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a3f7c663787c2a28ec9cef7721cedc83d6bdf75fff5a54745981686c7f355c71
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.32 Win 32 Exe x86
Link:
https://app.malva.re/file/c5c6ccefaec1268d1e02dbd65719631c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3f7c663787c2a28ec9cef7721cedc83d6bdf75fff5a54745981686c7f355c71/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-09-03 22:03:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=up34my3ypqvcr3e4553sdtw4qpll352775nfi5czqfugy7zvlryq._file
Verdict:
malicious
Label(s):
QuasarRAT
Create hunting rule
Link:
https://reports.threatray.com/bf97e67d-47ed-4d20-8a39-bfb14fc03e99
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:zero3 spyware trojan
Link:
https://tria.ge/reports/260923-ll6cmszs2j/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Executes dropped EXE
Family: Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
zero2six1.duckdns.org:4782
Unpacked files
SH256 hash:
a3f7c663787c2a28ec9cef7721cedc83d6bdf75fff5a54745981686c7f355c71
MD5 hash:
c5c6ccefaec1268d1e02dbd65719631c
SHA1 hash:
2654ead8fc44a3fd7ba658039f1de05de3467e18
Link:
https://www.unpac.me/results/7daf0034-a5dd-4d0b-97a7-79aba5d82c61/
Malware family:
PulsarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a3f7c663787c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a3f7c663787c2a28ec9cef7721cedc83d6bdf75fff5a54745981686c7f355c71

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:Check_VBox_Guest_Additions
Create hunting rule
Rule name:Check_VmTools
Create hunting rule
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/88567/

Comments