MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b2ac73060b0d8fd731ebf79beefc02b79ffacc6262a57790e365db9f9cddd960. 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 28 File information Comments
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SHA256 hash: b2ac73060b0d8fd731ebf79beefc02b79ffacc6262a57790e365db9f9cddd960
SHA3-384 hash: f8f025b182d64b9e201364bafac8a8043dc8a880a68abc21b9fc8d0bb68057cd2886af3c24ee11e08884c58d980a6892
SHA1 hash: 392e4e1743f11f241ba0057e11bedd6bc4c56eaf
MD5 hash: f319a0df44a2c8f90cdd7377955553f5
humanhash: double-bakerloo-venus-edward
File name:eyiqd.ps1
Download: download sample
Signature QuasarRAT
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File size:3'812'674 bytes
First seen:2024-03-19 11:43:25 UTC
Last seen:Never
File type:PowerShell (PS) ps1
MIME type:text/plain
ssdeep 12288:+80rjp4ZEbqWo/65t++SxPDViVi11vtUNoMLpCgrkm7vwAeu7Bs6F3XLLx+mLhRf:pgoUUdnmEaDx8SYb8OkWEX
TLSH T11106BE142BAA251E31E6EB4B1EC5BCBD8E49F763E1D920B7541E024B5312D00BF993F9
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Reporter mossdinger
Tags:ps1 QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
216
Origin country :
TH TH
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Other.Malware-gen.32752.8842.UNOFFICIAL
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Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/65f97a8987137159d449fa76/reports/ac07c03b-2252-4324-9d73-0b79296cec5a/overview
Verdict:
Malicious
Labled as:
PowerShell/TrojanDownloader.Agent
Link:
https://www.hybrid-analysis.com/sample/b2ac73060b0d8fd731ebf79beefc02b79ffacc6262a57790e365db9f9cddd960
Result
Verdict:
MALICIOUS
Result
Threat name:
Clipboard Hijacker, Quasar
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Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1411675
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Contains functionality to hide user accounts
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Sigma detected: Potentially Suspicious Malware Callback Communication
Sigma detected: Silenttrinity Stager Msbuild Activity
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Clipboard Hijacker
Yara detected Generic Downloader
Yara detected Powershell download and execute
Yara detected Quasar RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
Score:
75%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/b2ac73060b0d8fd731ebf79beefc02b79ffacc6262a57790e365db9f9cddd960
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b2ac73060b0d8fd731ebf79beefc02b79ffacc6262a57790e365db9f9cddd960/
Threat name:
Win32.Trojan.Generic
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Status:
Suspicious
First seen:
2024-03-19 11:44:07 UTC
File Type:
Text (PowerShell)
AV detection:
6 of 24 (25.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wkwhgbqlbwh5ompl66n657acw6p7vtdcmksxpehdmxnz7hg53fqa._file
Verdict:
malicious
Result
Malware family:
quasar
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Score:
  10/10
Tags:
family:quasar botnet:novotrampo2 spyware trojan
Link:
https://tria.ge/reports/240319-nv55cabb92/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Blocklisted process makes network request
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
54.39.233.85:5552
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Quasar
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/b2ac73060b0d8fd731ebf79beefc02b79ffacc6262a57790e365db9f9cddd960

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:Disable_Defender
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Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
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Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
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Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL
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Author:ditekSHen
Description:Detects executables containing URLs to raw contents of a Github gist
Rule name:INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender
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Author:ditekSHen
Description:Detects executables embedding registry key / value combination indicative of disabling Windows Defender features
Rule name:INDICATOR_SUSPICIOUS_EXE_RegKeyComb_IExecuteCommandCOM
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Author:ditekSHen
Description:Detects executables embedding command execution via IExecuteCommand COM object
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCMD
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Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
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Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:malware_Quasar_strings
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Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:MALWARE_Win_ArrowRAT
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Author:ditekSHen
Description:Detects ArrowRAT
Rule name:MALWARE_Win_DLAgent09
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Author:ditekSHen
Description:Detects known downloader agent
Rule name:MALWARE_Win_DLAgent10
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Author:ditekSHen
Description:Detects known downloader agent
Rule name:MALWARE_Win_QuasarRAT
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Author:ditekSHen
Description:QuasarRAT payload
Rule name:masslogger_gcch
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Author:govcert_ch
Rule name:msil_suspicious_use_of_strreverse
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Author:dr4k0nia
Description:Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
Rule name:Multifamily_RAT_Detection
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Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
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Author:malware-lu
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
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Rule name:RDPWrap
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Author:@bartblaze
Description:Identifies RDP Wrapper, sometimes used by attackers to maintain persistence.
Reference:https://github.com/stascorp/rdpwrap
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_NET_Msil_Suspicious_Use_StrReverse
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Author:dr4k0nia, modified by Florian Roth
Description:Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
Reference:https://github.com/dr4k0nia/yara-rules
Rule name:SUSP_OneNote
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Author:spatronn
Description:Hard-Detect One
Rule name:ThreadControl__Context
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Typical_Malware_String_Transforms
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Author:Florian Roth (Nextron Systems)
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
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Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Windows_Trojan_MassLogger_511b001e
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Author:Elastic Security
Rule name:win_masslogger_w0
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Author:govcert_ch

File information

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

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