MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 821a72cc451b8937d65c39ea4e7b04634a809e473945662f711f6870d932e84d. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 821a72cc451b8937d65c39ea4e7b04634a809e473945662f711f6870d932e84d
SHA3-384 hash: 8156126becdfcc2167ed70ab48f554f316225d995a81760adf5791e7f853921f7e52e231d60709929c7c95d7209aeba0
SHA1 hash: 009af7f85f80775d133434283d7092932d9ac3e4
MD5 hash: 0610a0045b51ebb20f65094835184059
humanhash: single-asparagus-chicken-east
File name:EdgeUpgrade.ps1
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:331'170 bytes
First seen:2025-12-27 01:04:51 UTC
Last seen:Never
File type:PowerShell (PS) ps1
MIME type:text/plain
ssdeep 6144:Z581i2otNkQqts0HeFMPEKSPlVY7dx+VJ:ZF
TLSH T197641971874599ED221FD2871D10686847AEA9F7302194DA6F6E0BB9CEE7F60CFC3814
Magika powershell
Reporter smica83
Tags:ps1 QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
186
Origin country :
HU HU
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=694f30d1038f10550b562fc0
Tags:
autorun quasar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
evasive persistence reconnaissance
Link:
https://www.filescan.io/uploads/694f30cce126b9ff4392bed4/reports/45142e29-e870-4c3f-a300-d87cb4a08cd3/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/821a72cc451b8937d65c39ea4e7b04634a809e473945662f711f6870d932e84d
Verdict:
Malicious
File Type:
ps1
First seen:
2025-12-26T23:06:00Z UTC
Last seen:
2025-12-27T02:28:00Z UTC
Hits:
~10
Detections:
Trojan-Spy.Quasar.HTTP.ServerRequest Trojan.PowerShell.Agent.jq PDM:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/821a72cc451b8937d65c39ea4e7b04634a809e473945662f711f6870d932e84d/results?tab=lookup
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1840182
Signature
Bypasses PowerShell execution policy
Detected Quasar RAT
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Sample uses string decryption to hide its real strings
Sigma detected: Execution of Powershell Script in Public Folder
Sigma detected: Potentially Suspicious PowerShell Child Processes
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1840182 Sample: EdgeUpgrade.ps1 Startdate: 27/12/2025 Architecture: WINDOWS Score: 100 37 imdeveloper.work.gd 2->37 39 ip-api.com 2->39 45 Suricata IDS alerts for network traffic 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 9 other signatures 2->51 8 wscript.exe 1 2->8         started        11 powershell.exe 21 2->11         started        signatures3 process4 file5 53 Wscript starts Powershell (via cmd or directly) 8->53 55 Bypasses PowerShell execution policy 8->55 57 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->57 14 powershell.exe 15 8->14         started        17 conhost.exe 8->17         started        33 C:\Users\PublicdgeUpgrade.ps1, ASCII 11->33 dropped 35 C:\Users\PublicdgeUpdater.vbs, ASCII 11->35 dropped 59 Uses schtasks.exe or at.exe to add and modify task schedules 11->59 61 Writes to foreign memory regions 11->61 63 Suspicious execution chain found 11->63 65 Injects a PE file into a foreign processes 11->65 19 RegAsm.exe 15 2 11->19         started        22 conhost.exe 11->22         started        24 schtasks.exe 1 11->24         started        signatures6 process7 dnsIp8 69 Writes to foreign memory regions 14->69 71 Suspicious execution chain found 14->71 73 Injects a PE file into a foreign processes 14->73 26 RegAsm.exe 3 14->26         started        29 conhost.exe 14->29         started        31 schtasks.exe 1 14->31         started        41 imdeveloper.work.gd 188.165.63.129, 1414, 49717, 49725 OVHFR France 19->41 43 ip-api.com 208.95.112.1, 49716, 80 TUT-ASUS United States 19->43 75 Detected Quasar RAT 19->75 signatures9 process10 signatures11 67 Detected Quasar RAT 26->67
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/821a72cc451b8937d65c39ea4e7b04634a809e473945662f711f6870d932e84d
Verdict:
Malware
YARA:
3 match(es)
Tags:
DeObfuscated PowerShell
Link:
https://app.malva.re/file/0610a0045b51ebb20f65094835184059
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/821a72cc451b8937d65c39ea4e7b04634a809e473945662f711f6870d932e84d/
Verdict:
Malicious
Threat:
Family.QUASAR
Link:
https://tip.neiki.dev/file/821a72cc451b8937d65c39ea4e7b04634a809e473945662f711f6870d932e84d
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qinhftcfdoetpvs4hhve46yemnfibhshhfcwml3rd5uhbwjs5bgq._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 discovery execution persistence spyware trojan
Link:
https://tria.ge/reports/251227-bfn63awjbm/
Behaviour
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
imdeveloper.work.gd:1414
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/821a72cc451b8937d65c39ea4e7b04634a809e473945662f711f6870d932e84d

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:NET
Create hunting rule
Author:malware-lu
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)

File information

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

Comments