MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 943699ed8f49842c31c0d7de09dce2b105e65b8931babc996d0beb67dd53aaeb. 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 1 YARA 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 943699ed8f49842c31c0d7de09dce2b105e65b8931babc996d0beb67dd53aaeb
SHA3-384 hash: f79757a715156900c55869f5bd8780c7b532b74ea4de25026861659e2019989d9a065c743b08f6a2dfe4c1b5da3deadd
SHA1 hash: 254cd717c711a3c43692a53ab27a0f6123eaca6d
MD5 hash: e8afe371b2d9c56b771befb5efc0e854
humanhash: red-low-november-charlie
File name:943699ed8f49842c31c0d7de09dce2b105e65b8931bab.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'266'048 bytes
First seen:2025-05-16 16:50:23 UTC
Last seen:2025-05-17 08:05:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 49152:3vyI22SsaNYfdPBldt698dBcjHq+momzTcoGd6tTHHB72eh2NT:3vf22SsaNYfdPBldt6+dBcjHq+myK
Threatray 1'188 similar samples on MalwareBazaar
TLSH T12CE54A0477F85E62E56AD3B3D5F0542363F0FC2AF3A3EB0B5191667A1C93B4098426A7
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 abuse_ch
Tags:exe QuasarRAT RAT


Avatar
abuse_ch
QuasarRAT C2:
150.241.93.127:4782

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
150.241.93.127:4782 https://threatfox.abuse.ch/ioc/1523967/

Intelligence

File Origin
# of uploads :
3
# of downloads :
591
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
amadey
Create hunting rule
ID:
1
File name:
random.exe
Verdict:
Malicious activity
Analysis date:
2025-05-16 16:28:36 UTC
Tags:
auto-sch loader amadey botnet stealer vidar telegram lumma auto-reg rdp credentialflusher rat quasar remote evasion redline lefthook metastealer miner gcleaner
Link:
https://app.any.run/tasks/cc3abef9-7d8d-48fd-a2e3-6e801ba3e00e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Malware.Generic-9883083-0
Create hunting rule

Win.Malware.Msilheracles-9900242-0
Create hunting rule

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

Win.Packed.Downeks-6898097-0
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68276ce14a59e5a2ce0546df
Tags:
infosteal autorun quasar
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm base64 certreq expand explorer fingerprint infostealer keylogger lolbin obfuscated obfuscated quasarrat rat reconnaissance remote runonce schtasks stealer stealer
Link:
https://www.filescan.io/uploads/68276d09bff72ff46b65449d/reports/44712e64-8f85-4f53-bad9-e63443d6777e/overview
Verdict:
Malicious
Labled as:
Trojan.Agent
Link:
https://www.hybrid-analysis.com/sample/943699ed8f49842c31c0d7de09dce2b105e65b8931babc996d0beb67dd53aaeb
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/94eba1e4-0b02-4abe-b183-a90ecbd495ce
Result
Threat name:
Quasar, AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1692235
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
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
Sample uses string decryption to hide its real strings
Sigma detected: Quasar
Suricata IDS alerts for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1692235 Sample: 943699ed8f49842c31c0d7de09d... Startdate: 16/05/2025 Architecture: WINDOWS Score: 100 31 ipwho.is 2->31 33 bg.microsoft.map.fastly.net 2->33 47 Suricata IDS alerts for network traffic 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 7 other signatures 2->53 9 943699ed8f49842c31c0d7de09dce2b105e65b8931bab.exe 5 2->9         started        13 Client.exe 3 2->13         started        signatures3 process4 file5 27 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 9->27 dropped 29 943699ed8f49842c31...e65b8931bab.exe.log, CSV 9->29 dropped 55 Uses schtasks.exe or at.exe to add and modify task schedules 9->55 57 Hides that the sample has been downloaded from the Internet (zone.identifier) 9->57 15 Client.exe 14 2 9->15         started        19 schtasks.exe 1 9->19         started        signatures6 process7 dnsIp8 35 150.241.93.127, 4782, 49681 TECNALIAES Spain 15->35 37 ipwho.is 108.181.47.111, 443, 49683 ASN852CA Canada 15->37 39 Antivirus detection for dropped file 15->39 41 Multi AV Scanner detection for dropped file 15->41 43 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->43 45 Installs a global keyboard hook 15->45 21 schtasks.exe 1 15->21         started        23 conhost.exe 19->23         started        signatures9 process10 process11 25 conhost.exe 21->25         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/943699ed8f49842c31c0d7de09dce2b105e65b8931babc996d0beb67dd53aaeb
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/943699ed8f49842c31c0d7de09dce2b105e65b8931babc996d0beb67dd53aaeb/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2025-05-16 16:51:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sq3jt3mpjgccymoa27patxhcwec6mw4jgg5lzglnbpvwpxktvlvq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
17abf2eb5bfc5f1be41bbba2e0b1cb59787e3879d152bf6ff9b4d91702a402c4
QuasarRAT
457e291dc62946ab2dc1cb558ffca2e90e5ebbd4a27013c5a23930339aedb978
QuasarRAT
468ba790ac48bf4dd494f11153ee26a5ea5a34da611a7f294f6917fa7ec107c4
QuasarRAT
64f51e7b139ab5cf5829321a7ea0e7cc8aad04f1ec1d872345ee029e679dd2af
QuasarRAT
d62ca6b35f3b5c4bdd55797a09e50fc29a017deaed82706ecc5606aec87ec782
QuasarRAT
error
QuasarRAT
+ 1'178 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 spyware trojan
Link:
https://tria.ge/reports/250516-vczyyayjt5/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
150.241.93.127:4782
Verdict:
Malicious
Tags:
stealer rat quasar_rat Win.Malware.Generic-9883083-0
YARA:
MALWARE_Win_Quasarstealer MAL_QuasarRAT_May19_1 malware_windows_quasarrat win_quasar_rat_client
Link:
https://app.threat.zone/submission/0e88d1bf-4ad6-47cc-84a7-8e24db1b1b5b
Unpacked files
SH256 hash:
943699ed8f49842c31c0d7de09dce2b105e65b8931babc996d0beb67dd53aaeb
MD5 hash:
e8afe371b2d9c56b771befb5efc0e854
SHA1 hash:
254cd717c711a3c43692a53ab27a0f6123eaca6d
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/b3713ac2-fcbb-4777-b39e-e7dbdfe362cf/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/943699ed8f49/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
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
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_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: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.

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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