MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 feec3cf0f4281220ada2bb20bd59a3254e7543d65631a4a0deae019ffc15d277. 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: 18


Intelligence 18 IOCs YARA 31 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: feec3cf0f4281220ada2bb20bd59a3254e7543d65631a4a0deae019ffc15d277
SHA3-384 hash: f34bcc1757961d588317754b13cf54b45f2cde98f67c26a4df0471b60d4bb8e85c2ac89526f5c5ade3221a581fe1bde3
SHA1 hash: 8370e6f71a2dea8dbdf739a549f740c98153246f
MD5 hash: a7ee0066dd2cf11a38226709c76c314d
humanhash: december-winner-sodium-ohio
File name:Service.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:2'027'008 bytes
First seen:2026-03-17 15:35:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'844 x AgentTesla, 19'775 x Formbook, 12'297 x SnakeKeylogger)
ssdeep 49152:DcSNWnn7wRPirm2NnPTKKm77LrwCB6uanKy:DR0MoZNn2Km77LrwkFW
Threatray 443 similar samples on MalwareBazaar
TLSH T17395F050B7F6811AF2FF6BB9A8B718490B37B903EA36D74E0888605D1EB77409D51363
TrID 59.5% (.RLL) Microsoft Resource Library (x86) (177572/6/26)
24.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
5.5% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
2.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
2.1% (.EXE) Win64 Executable (generic) (6522/11/2)
Magika pebin
Reporter burger
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
156
Origin country :
NL NL
Vendor Threat Intelligence
Malware configuration found for:
QuasarRAT
Details
Link:
https://research.acce.ciphertechsolutions.com/results/07553414-41d5-4547-ae43-0d36f0c6bf3f/
Malware family:
n/a
ID:
1
File name:
Service.exe
Verdict:
Malicious activity
Analysis date:
2026-03-17 15:24:34 UTC
Tags:
evasion crypto-regex pulsar rat stealer
Link:
https://app.any.run/tasks/d2f7553a-2ac5-4120-9a36-1262f2335052

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/57777/
Detection(s):
Win.Malware.Generic-9883083-0
Create hunting rule

Win.Malware.Bulz-9933026-0
Create hunting rule

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL
Create hunting rule

Win.Malware.Generic-6623004-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69b974ae88c80c01586b42eb
Tags:
vmdetect quasar emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Creating a file in the %AppData% directory
Launching a process
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Connection attempt
DNS request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/feec3cf0f4281220ada2bb20bd59a3254e7543d65631a4a0deae019ffc15d277
Verdict:
Malicious
File Type:
exe x32
Detections:
Trojan-PSW.MSIL.Agent.sb HEUR:Trojan-Banker.MSIL.ClipBanker.gen HEUR:Trojan.MSIL.SAgent.gen Backdoor.MSIL.PulsarRAT.sb PDM:Trojan.Win32.Tasker.cust PDM:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/feec3cf0f4281220ada2bb20bd59a3254e7543d65631a4a0deae019ffc15d277/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/119beb44-4aa7-45ed-968f-0e3e6a6f98f8
Result
Threat name:
Quasar, Xorium Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1884989
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Potential Privilege Escalation using Task Scheduler highest RunLevel
Sample uses string decryption to hide its real strings
Sigma detected: Capture Wi-Fi password
Tries to detect sandboxes / dynamic malware analysis system (Installed program check)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal WLAN passwords
Uses netsh to dump wireless credentials
Uses netsh to modify the Windows network and firewall settings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected EXE embedded in BAT file
Yara detected Quasar RAT
Yara detected Xorium Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1884989 Sample: Service.exe Startdate: 17/03/2026 Architecture: WINDOWS Score: 100 44 ipwho.is 2->44 46 icanhazip.com 2->46 62 Found malware configuration 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Antivirus detection for dropped file 2->66 68 11 other signatures 2->68 9 Service.exe 4 2->9         started        13 Service.exe 2 2->13         started        signatures3 process4 file5 40 C:\Users\user\AppData\Roaming\Service.exe, PE32 9->40 dropped 42 C:\Users\user\AppData\...\Service.exe.log, CSV 9->42 dropped 70 Uses schtasks.exe or at.exe to add and modify task schedules 9->70 72 Hides that the sample has been downloaded from the Internet (zone.identifier) 9->72 74 Potential Privilege Escalation using Task Scheduler highest RunLevel 9->74 15 Service.exe 14 20 9->15         started        20 schtasks.exe 1 9->20         started        signatures6 process7 dnsIp8 48 85.235.75.90, 25565, 49689 CMCSUS Turkey 15->48 50 icanhazip.com 104.16.185.241 CLOUDFLARENETUS United States 15->50 52 ipwho.is 104.20.44.133, 443, 49694 CLOUDFLARENETUS United States 15->52 36 C:\Users\user\AppData\...\Stealerv37.dll, PE32 15->36 dropped 38 C:\Users\user\AppData\...\K8yOIoVMg0rD.exe, PE32 15->38 dropped 54 Antivirus detection for dropped file 15->54 56 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->56 58 Found many strings related to Crypto-Wallets (likely being stolen) 15->58 60 7 other signatures 15->60 22 netsh.exe 2 15->22         started        24 netsh.exe 2 15->24         started        26 schtasks.exe 1 15->26         started        28 conhost.exe 20->28         started        file9 signatures10 process11 process12 30 conhost.exe 22->30         started        32 conhost.exe 24->32         started        34 conhost.exe 26->34         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/feec3cf0f4281220ada2bb20bd59a3254e7543d65631a4a0deae019ffc15d277
Verdict:
QuasarRat
YARA:
16 match(es)
Tags:
.Net Executable Fody/Costura Packer Html Malicious Managed .NET PDB Path PE (Portable Executable) PE File Layout QuasarRat RAT SOS: 0.14 SOS: 0.15 SOS: 0.18 SOS: 0.20 SOS: 0.22 SOS: 0.23 SOS: 0.24 SOS: 0.25 SOS: 0.26 SOS: 0.27 SOS: 0.29 SOS: 0.32 SOS: 0.34 SOS: 0.35 SOS: 0.61 Win 32 Exe x86
Malware Config
C2 Extraction:
PORT: ChainingModeGCM
CNC: ChainingModeGCM
Link:
https://app.malva.re/file/a7ee0066dd2cf11a38226709c76c314d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/feec3cf0f4281220ada2bb20bd59a3254e7543d65631a4a0deae019ffc15d277/
Verdict:
Malicious
Threat:
Family.PULSARRAT
Link:
https://tip.neiki.dev/file/feec3cf0f4281220ada2bb20bd59a3254e7543d65631a4a0deae019ffc15d277
Threat name:
Win32.Backdoor.PulsarRat
Create hunting rule
Status:
Malicious
First seen:
2026-03-17 16:22:30 UTC
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=73wdz4hufajcblncxmql2wndevhhkq6wkyy2jig6vyaz77av2j3q._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
51fe6cfaf0e1072a180b909dba8e7fd9e078f8e6180fea4526730a37b3c03737
QuasarRAT
803bf3bd01898d5f5ba4dbe0838e7db049710c17f4ede83cebc6d7f4bed8898a
QuasarRAT
c29ae3440fdedb73695e61c3b63cc272ead3850f4cb7d3c04599cd2531829eb8
QuasarRAT
ecc192b51f189d8a835a5d869b16446dedcfc6724843144b3b249d61be9460c5
QuasarRAT
error
QuasarRAT
f602c038f77842fd61953e3fbfa7ec9b085f829ce7376b77b22cb93fc4927d95
QuasarRAT
feec3cf0f4281220ada2bb20bd59a3254e7543d65631a4a0deae019ffc15d277
QuasarRAT
+ 433 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 execution persistence spyware trojan
Link:
https://tria.ge/reports/260317-s1224agv4y/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
85.235.75.90:25565
Unpacked files
SH256 hash:
feec3cf0f4281220ada2bb20bd59a3254e7543d65631a4a0deae019ffc15d277
MD5 hash:
a7ee0066dd2cf11a38226709c76c314d
SHA1 hash:
8370e6f71a2dea8dbdf739a549f740c98153246f
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/334fc9fb-51d8-4d4e-a681-b35703ab1668/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/feec3cf0f428/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/feec3cf0f4281220ada2bb20bd59a3254e7543d65631a4a0deae019ffc15d277

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_Dlls
Create hunting rule
Rule name:Costura_Protobuf
Create hunting rule
Author:@bartblaze
Description:Identifies Costura and Protobuf in .NET assemblies, respectively for storing resources and (de)serialization. Seen together might indicate a suspect binary.
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:detect_powershell
Create hunting rule
Author:daniyyell
Description:Detects suspicious PowerShell activity related to malware execution
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_EXE_Packed_Fody
Create hunting rule
Author:ditekSHen
Description:Detects executables manipulated with Fody
Rule name:Indicator_MiniDumpWriteDump
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects PE files and PowerShell scripts that use MiniDumpWriteDump either through direct imports or string references
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender
Create hunting rule
Author:ditekSHen
Description:Detects executables embedding registry key / value combination indicative of disabling Windows Defender features
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:MAL_BackNet_Nov18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects BackNet samples
Reference:https://github.com/valsov/BackNet
Rule name:MAL_BackNet_Nov18_1_RID2D6D
Create hunting rule
Author:Florian Roth
Description:Detects BackNet samples
Reference:https://github.com/valsov/BackNet
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
Description:Detects QuasarRAT malware
Rule name:MAL_QuasarRAT_May19_1_RID2E1E
Create hunting rule
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
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:Pulsar_RAT
Create hunting rule
Author:@bartblaze
Description:Identifies Pulsar RAT, based on Quasar RAT.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.pulsar_rat
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
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/57777/

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