MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f5238cef954ae8da144e56269c54e11f5861d7e11c7334a632b46e41c9ee65a4. 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: 16


Intelligence 16 IOCs YARA 28 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f5238cef954ae8da144e56269c54e11f5861d7e11c7334a632b46e41c9ee65a4
SHA3-384 hash: eca4b1c16f4b940529cad8e37f41003e5570da5507716801ba64496cd270d52234a5af9c582e44f23b71cdd8632fd152
SHA1 hash: c58940364c64aa487fc4d7783b175dfec3534761
MD5 hash: 7f3a4618e276841c190c23e11e2dda26
humanhash: hamper-burger-west-freddie
File name:Client.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:2'926'080 bytes
First seen:2025-11-23 00:10:44 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash baa93d47220682c04d92f7797d9224ce (139 x RiseProStealer, 26 x Xtrat, 18 x CoinMiner)
ssdeep 49152:8RiAHRqzdbd+y/wPNLRFcbVlJcWQiBrXiTLxjNNJngm4s2yRqqOIKJeYFMyqW5z3:8RFyXw1LRFcirNJngvs7MqOjTMyrz/gk
TLSH T1CED5335B1C550371C0B7DBFA1D72EEF64BE04E23A3819D25FEB8059136AF06435EAA24
TrID 52.9% (.EXE) Win32 Executable (generic) (4504/4/1)
23.5% (.EXE) Generic Win/DOS Executable (2002/3)
23.5% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter Hexastrike
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
103
Origin country :
IE IE
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
Client.exe
Verdict:
Malicious activity
Analysis date:
2025-11-23 10:18:49 UTC
Tags:
quasar themida
Link:
https://app.any.run/tasks/d66df719-6f83-4d5c-96df-d8f9bc045772

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/39994/
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=692263f0b6ee81118d2c73b0
Tags:
quasar virus remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for analyzing tools
Searching for the window
Creating a window
Connection attempt
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed packed quasarrat themidawinlicense
Link:
https://www.filescan.io/uploads/69225f2df96b58f0dc80682d/reports/e7b917fd-482a-478e-8823-27c0e37870fe/overview
Verdict:
Malicious
Labled as:
Dump:Generic.Qasar.B
Link:
https://www.hybrid-analysis.com/sample/f5238cef954ae8da144e56269c54e11f5861d7e11c7334a632b46e41c9ee65a4
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-02T23:17:00Z UTC
Last seen:
2025-11-04T10:59:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/f5238cef954ae8da144e56269c54e11f5861d7e11c7334a632b46e41c9ee65a4/results?tab=lookup
Gathering data
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f5238cef954ae8da144e56269c54e11f5861d7e11c7334a632b46e41c9ee65a4
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/7f3a4618e276841c190c23e11e2dda26
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f5238cef954ae8da144e56269c54e11f5861d7e11c7334a632b46e41c9ee65a4/
Threat name:
Win32.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2025-11-03 04:16:05 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6uryz34vjlunufcokytjyvhbd5mgdv7bdrztjjrswrxedspomwsa._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
error
QuasarRAT
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:sixseven67 defense_evasion discovery spyware trojan
Link:
https://tria.ge/reports/251123-bj8d4sgq3z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Checks BIOS information in registry
Identifies Wine through registry keys
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
127.0.0.1:4782
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9ce942a4-0120-4a79-88e1-e82d45ba44c8
Unpacked files
SH256 hash:
f5238cef954ae8da144e56269c54e11f5861d7e11c7334a632b46e41c9ee65a4
MD5 hash:
7f3a4618e276841c190c23e11e2dda26
SHA1 hash:
c58940364c64aa487fc4d7783b175dfec3534761
Link:
https://www.unpac.me/results/d5c80a56-7d78-4307-8378-c4915583c67b/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f5238cef954a/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/f5238cef954ae8da144e56269c54e11f5861d7e11c7334a632b46e41c9ee65a4

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_GENInfoStealer
Create hunting rule
Author:ditekSHen
Description:Detects executables containing common artifacts observed in infostealers
Rule name:Lumma_Stealer_Detection
Create hunting rule
Author:ashizZz
Description:Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/
Rule name:MALWARE_Win_QuasarStealer
Create hunting rule
Author:ditekshen
Description:Detects Quasar infostealer
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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
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:quasarrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:quasarrat_kingrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RC6_Constants
Create hunting rule
Author:chort (@chort0)
Description:Look for RC6 magic constants in binary
Reference:https://twitter.com/mikko/status/417620511397400576
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
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:Windows_Generic_Threat_803feff4
Create hunting rule
Author:Elastic Security
Rule name:win_quasar_rat_client
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in Quasar Rat Samples.

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/39994/

Comments