MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f1f65883c03e68ceff270b8cd6ab4daa300a07aa8f235baa0b5e20df6d43b618. 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: 20


Intelligence 20 IOCs YARA 37 File information Comments
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SHA256 hash: f1f65883c03e68ceff270b8cd6ab4daa300a07aa8f235baa0b5e20df6d43b618
SHA3-384 hash: 699dee9d040ed04243e07621ee2db03c1b5e55bf743f59e4e6f696455f29f8cb79c8321294c969b6b74b35e87e7f98aa
SHA1 hash: 92bc7809b0d09c58c7ac41f7b74450fae5d805e6
MD5 hash: 5abb508f185b282a7f7421ae4f497dc1
humanhash: mars-sierra-skylark-colorado
File name:Client.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:295'424 bytes
First seen:2025-11-23 00:10:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'854 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep 6144:E7zO0LSclT6FOwEP5Kq+SMv0VGb7bDcllbkvn:6lJtTF9zVGkllbk/
Threatray 710 similar samples on MalwareBazaar
TLSH T113545A2527F8A93BD8BE17B4F53141094B76FC07B517F38E6A5818B82C1A38985937E3
TrID 58.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
13.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
8.4% (.EXE) Win64 Executable (generic) (10522/11/4)
5.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
Reporter Hexastrike
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
110
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 10:36:49 UTC
Tags:
evasion rat quasar remote
Link:
https://app.any.run/tasks/27be2b07-d34e-47fe-9f04-009071a429c1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/39979/
Detection(s):
Win.Trojan.Barys-1
Create hunting rule

Win.Packed.Generic-9830106-0
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Win.Packed.QuasarRAT-10012744-0
Create hunting rule

Win.Trojan.Generic-6295765-0
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Win.Malware.Generic-6623004-0
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Win.Trojan.Generic-6898101-0
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Win.Trojan.Generic-6898102-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=692263ba140de26f6c2c7102
Tags:
vmdetect quasar
Result
Verdict:
Malware
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Setting a keyboard event handler
Creating a file in the %AppData% subdirectories
Creating a window
Connection attempt to an infection source
Sending a TCP request to an infection source
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm anti-vm base64 blackshades byteguard crypto fingerprint infostealer keylogger lolbin obfuscated packed quasar rat reconnaissance runonce stealer vbnet vermin xrat
Link:
https://www.filescan.io/uploads/69225edeeecb08e4aa4531b9/reports/d2b4ad5e-e5ce-48a8-8efe-86974f82fe37/overview
Verdict:
Malicious
Labled as:
Ransom.Imps.Generic
Link:
https://www.hybrid-analysis.com/sample/f1f65883c03e68ceff270b8cd6ab4daa300a07aa8f235baa0b5e20df6d43b618
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-25T02:31:00Z UTC
Last seen:
2025-10-26T17:34:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/f1f65883c03e68ceff270b8cd6ab4daa300a07aa8f235baa0b5e20df6d43b618/results?tab=lookup
Gathering data
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f1f65883c03e68ceff270b8cd6ab4daa300a07aa8f235baa0b5e20df6d43b618
Verdict:
QuasarRat
YARA:
17 match(es)
Tags:
.Net Executable Malicious Managed .NET PE (Portable Executable) PE File Layout QuasarRat RAT SOS: 0.26 Win 32 Exe x86
Malware Config
C2 Extraction:
PORT: 222
CNC: 51.15.17.193
Link:
https://app.malva.re/file/5abb508f185b282a7f7421ae4f497dc1
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f1f65883c03e68ceff270b8cd6ab4daa300a07aa8f235baa0b5e20df6d43b618/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2025-10-25 07:26:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6h3fra6ahzum57zhbognnk2nviyaub5kr4rvxkqllyqn63kdwyma._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
3764d5269cce0d687d2004f7ded8672abffe660a3140e046a8265ecb89053049
QuasarRAT
80d8926421adb3426b815a4851c5a560cb65dcc73dfb45a56bc9d555fcb3bcf6
QuasarRAT
dabe0f83548baa1bbece033284676e56caff0eea881740218443b390c4e71680
QuasarRAT
error
QuasarRAT
f1f65883c03e68ceff270b8cd6ab4daa300a07aa8f235baa0b5e20df6d43b618
QuasarRAT
f1fe3f793ad91f0be6a2574b98423ad51e5d38eb226be004c1004478d5d8c386
QuasarRAT
fac79110f89632dd781e18a2c7a546512b25be68fd0be7ed03ed2adde4bd6237
QuasarRAT
+ 700 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:test2 discovery spyware trojan
Link:
https://tria.ge/reports/251123-bh8y9awna1/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
System Location Discovery: System Language Discovery
Looks up external IP address via web service
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
51.15.17.193:222
Verdict:
Malicious
Tags:
rat quasar_rat vermin Win.Trojan.Barys-1 IP_address_lookup_website
YARA:
JPCERTCC_Quasar MALWARE_Win_QuasarRAT MAL_QuasarRAT_May19_1 Quasar_RAT_1 Quasar_RAT_2 Vermin_Keylogger_Jan18_1 Windows_Trojan_Quasarrat_e52df647 malware_Quasar_strings malware_windows_quasarrat win_quasar_rat_client
Link:
https://app.threat.zone/submission/5915e367-800a-41f9-a455-53b7b1afa0a7
Unpacked files
SH256 hash:
f1f65883c03e68ceff270b8cd6ab4daa300a07aa8f235baa0b5e20df6d43b618
MD5 hash:
5abb508f185b282a7f7421ae4f497dc1
SHA1 hash:
92bc7809b0d09c58c7ac41f7b74450fae5d805e6
Detections:
win_blackshades_w0
Create hunting rule
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/1cff3a7f-6431-43f0-b065-ecb821709225/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f1f65883c03e/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/f1f65883c03e68ceff270b8cd6ab4daa300a07aa8f235baa0b5e20df6d43b618

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:BlackShades_4
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Description:BlackShades
Rule name:CN_disclosed_20180208_KeyLogger_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
Rule name:CN_disclosed_20180208_KeyLogger_1_RID3227
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
Rule name:DebuggerCheck__API
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_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
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:INDICATOR_SUSPICIOUS_GENRansomware
Create hunting rule
Author:ditekSHen
Description:Detects command variations typically used by ransomware
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_Quasar_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:MALWARE_Win_QuasarRAT
Create hunting rule
Author:ditekSHen
Description:QuasarRAT payload
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:pe_imphash
Create hunting rule
Rule name:Quasar
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:QuasarRAT
Create hunting rule
Author:ditekshen
Description:QuasarRAT payload
Rule name:quasarrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:quasarrat_kingrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:Quasar_RAT_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_1
Create hunting rule
Author:@SOCRadar
Description:Detects Quasar RAT
Rule name:Quasar_RAT_1_RID2B54
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_2
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_2
Create hunting rule
Description:Detects Quasar RAT
Rule name:Quasar_RAT_2_RID2B55
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
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:Vermin_Keylogger_Jan18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Vermin Keylogger
Reference:https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/
Rule name:Windows_Trojan_Quasarrat_e52df647
Create hunting rule
Author:Elastic Security
Rule name:win_blackshades_w0
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Rule name:win_quasar_rat_client
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in Quasar Rat Samples.
Rule name:xRAT_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Patchwork malware
Reference:https://goo.gl/Pg3P4W
Rule name:xRAT_1_RID2900
Create hunting rule
Author:Florian Roth
Description:Detects Patchwork malware
Reference:https://goo.gl/Pg3P4W

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/39979/

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