MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b3577d4ef4e553995842f1feae47df6fce2a1e77893dbea2ce5a5135f248507. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1b3577d4ef4e553995842f1feae47df6fce2a1e77893dbea2ce5a5135f248507
SHA3-384 hash: 4c71d4af9b77a7a7f1325886352a512256a48b89c3c8eb55cc7490ea4adcd1b78ee3bd6f4df4f6be0bf8152af52fb299
SHA1 hash: d8dd1a09f7daf11dae61cb993a700c4557d1b584
MD5 hash: 3c107fb4c98787e3daefd0264ee8eaa4
humanhash: equal-one-mango-massachusetts
File name:luomaÕôìÕ¦ö.msi
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:4'177'920 bytes
First seen:2026-04-25 21:21:50 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 98304:Hq3MHrF7PHAM/GQEeFeiqUcRHiAozWzh6LUth+pAeUALpK/Yuwsf:Hq34F7Pp/9EThUyiAoqzg1j0Mi
TLSH T169163357F6F0A259C60727B582664308DC288D6B97495C24F1ECB328637CB63A1F87DE
TrID 88.4% (.MST) Windows SDK Setup Transform script (61000/1/5)
11.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika msi
Reporter aachum
Tags:apt APT41 CHN msi QuasarRAT


Avatar
iamaachum
C2: btc23556gvbvc.icu

Intelligence

File Origin
# of uploads :
1
# of downloads :
107
Origin country :
ES ES
Vendor Threat Intelligence
Malware configuration found for:
MSI
Details
MSI
an embedded setup program or component
Link:
https://research.acce.ciphertechsolutions.com/results/c6b1d8f5-de04-4a1b-9c1c-fdd934c6acfb/
Detection:
QuasarRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/63615/
Verdict:
Clean
Score:
84.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69ed30784aed15d079306ee1
Tags:
n/a
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm base64 CAB crypto evasive installer installer opendir packed
Link:
https://www.filescan.io/uploads/69ed309bc06ec088bf5e8d7f/reports/2638e330-7d8b-4bef-adf3-2056123c85f6/overview
Verdict:
Malicious
Labled as:
Trojan/Generic
Link:
https://www.hybrid-analysis.com/sample/1b3577d4ef4e553995842f1feae47df6fce2a1e77893dbea2ce5a5135f248507
Verdict:
Malicious
File Type:
msi
First seen:
2026-04-12T11:29:00Z UTC
Last seen:
2026-04-26T01:27:00Z UTC
Hits:
~10
Detections:
PDM:Exploit.Win32.Generic Trojan.Win32.Quasar.sb HEUR:Trojan.Win32.Generic HEUR:Trojan.OLE2.Cobalt.gen Trojan.PowerShell.Cobalt.sb Trojan.MSIL.Quasar.sb Trojan-Spy.MSIL.Downeks.sb Trojan-PSW.MSIL.Virinom.sb Trojan.Win32.Shellcode.sb Trojan.MSIL.Quasar.a Trojan.Win64.Shlem.sb Trojan.Win64.Shelm.sb Trojan-PSW.Win32.Stealer.sb HEUR:Trojan.Win64.Shelma.a Trojan.Win32.Shelm.a
Link:
https://opentip.kaspersky.com/1b3577d4ef4e553995842f1feae47df6fce2a1e77893dbea2ce5a5135f248507/results?tab=lookup
Result
Threat name:
DonutLoader, Quasar, XRat
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1904739
Signature
Antivirus detection for URL or domain
Contains functionality to inject code into remote processes
Detected unpacking (creates a PE file in dynamic memory)
Drops executables to the windows directory (C:\Windows) and starts them
Found direct / indirect Syscall (likely to bypass EDR)
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 is not signed and drops a device driver
Unusual module load detection (module proxying)
Yara detected DonutLoader
Yara detected Quasar RAT
Yara detected XRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1904739 Sample: luoma#U00d5#U00f4#U00ec#U00... Startdate: 25/04/2026 Architecture: WINDOWS Score: 100 89 stzb.163.com 2->89 91 s-cache.nie.163.com 2->91 93 4 other IPs or domains 2->93 103 Malicious sample detected (through community Yara rule) 2->103 105 Antivirus detection for URL or domain 2->105 107 Multi AV Scanner detection for dropped file 2->107 109 6 other signatures 2->109 10 msiexec.exe 78 31 2->10         started        13 iQCgJTYFDVss.exe 1 2->13         started        15 iQCgJTYFDVss.exe 1 2->15         started        17 msiexec.exe 5 2->17         started        signatures3 process4 file5 79 C:\...\dVvzBSFqlEbSfVt.exe, PE32 10->79 dropped 19 msiexec.exe 1 12 10->19         started        23 conhost.exe 13->23         started        25 conhost.exe 15->25         started        process6 file7 69 C:\Windows\iQCgJTYFDVss.exe, PE32+ 19->69 dropped 71 C:\Windows\asLqfKUayVMkuoJBbXFmszTasrDPKk, PE32+ 19->71 dropped 73 C:\Windows\SodaMusicLauncher.exe, PE32 19->73 dropped 75 4 other malicious files 19->75 dropped 111 Sample is not signed and drops a device driver 19->111 27 iQCgJTYFDVss.exe 3 19->27         started        31 dVvzBSFqlEbSfVt.exe 33 19->31         started        34 dVvzBSFqlEbSfVt.exe 29 19->34         started        36 powershell.exe 19->36         started        signatures8 process9 dnsIp10 101 s-cache.nie.163.com 42.186.160.148, 49701, 49704, 49706 NETEASE-ASGuangzhouNetEaseComputerSystemCoLtdCN China 27->101 117 Multi AV Scanner detection for dropped file 27->117 119 Detected unpacking (creates a PE file in dynamic memory) 27->119 121 Drops executables to the windows directory (C:\Windows) and starts them 27->121 125 2 other signatures 27->125 38 iQCgJTYFDVss.exe 15 35 27->38         started        43 iQCgJTYFDVss.exe 27->43         started        45 iQCgJTYFDVss.exe 27->45         started        53 2 other processes 27->53 81 C:\...\asLqfKUayVMkuoJBbXFmszTasrDPKk, PE32+ 31->81 dropped 83 C:\...\SodaMusicLauncher.exe, PE32 31->83 dropped 85 C:\Program Files (x86)\...\2_iQCgJTYFDVss.exe, PE32+ 31->85 dropped 87 C:\Program Files (x86)\...\JKCLbFgc.sys, data 31->87 dropped 123 Sample is not signed and drops a device driver 31->123 47 conhost.exe 31->47         started        49 conhost.exe 34->49         started        51 conhost.exe 36->51         started        file11 signatures12 process13 dnsIp14 95 btc23556gvbvc.icu 156.245.234.13, 80 DXTL-HKDXTLTseungKwanOServiceHK Seychelles 38->95 97 ipwho.is 172.66.175.107, 49711, 49724, 80 CLOUDFLARENETUS United States 38->97 77 C:\ProgramData\...\TMark.sys, ASCII 38->77 dropped 113 Sample is not signed and drops a device driver 38->113 115 Found direct / indirect Syscall (likely to bypass EDR) 38->115 55 WerFault.exe 31 16 38->55         started        57 conhost.exe 38->57         started        99 104.20.44.133, 49719, 80 CLOUDFLARENETUS United States 43->99 59 conhost.exe 43->59         started        61 WerFault.exe 43->61         started        63 conhost.exe 45->63         started        65 WerFault.exe 45->65         started        67 conhost.exe 53->67         started        file15 signatures16 process17
Score:
87%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/1b3577d4ef4e553995842f1feae47df6fce2a1e77893dbea2ce5a5135f248507
Verdict:
Malware
YARA:
5 match(es)
Tags:
ADODB.Stream Batch Command CAB:COMPRESSION:MSZIP DeObfuscated Executable Office Document PE (Portable Executable) PE File Layout PowerShell PowerShell Call Scripting.FileSystemObject WScript.Shell
Link:
https://app.malva.re/file/3c107fb4c98787e3daefd0264ee8eaa4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1b3577d4ef4e553995842f1feae47df6fce2a1e77893dbea2ce5a5135f248507/
Verdict:
Malicious
Threat:
Trojan.MSIL.Quasar
Link:
https://tip.neiki.dev/file/1b3577d4ef4e553995842f1feae47df6fce2a1e77893dbea2ce5a5135f248507
Threat name:
Win32.Trojan.Ravartar
Create hunting rule
Status:
Malicious
First seen:
2026-04-12 14:37:01 UTC
File Type:
Binary (Archive)
Extracted files:
4
AV detection:
7 of 24 (29.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dm2xpvhpjzkttfmef4p6vzd5636ofiphpcj5x2rm4wsrgxzequdq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery execution persistence privilege_escalation ransomware
Link:
https://tria.ge/reports/260425-z77dqabz3q/
Behaviour
Checks SCSI registry key(s)
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy service COM API
Command and Scripting Interpreter: PowerShell
Event Triggered Execution: Installer Packages
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Enumerates connected drives
Executes dropped EXE
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1b3577d4ef4e/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/1b3577d4ef4e553995842f1feae47df6fce2a1e77893dbea2ce5a5135f248507

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: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:detect_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique

File information

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

Web download

QuasarRAT

Microsoft Software Installer (MSI) msi eaa88387f08ecfa568dc2f70e477c0aa46d6a9443ec383063d12fd7c7e715502

QuasarRAT

Microsoft Software Installer (MSI) msi 1b3577d4ef4e553995842f1feae47df6fce2a1e77893dbea2ce5a5135f248507

(this sample)

  
Link
https://tria.ge/260425-z2hs6sby5j/behavioral3
  
Dropped by
SHA256 eaa88387f08ecfa568dc2f70e477c0aa46d6a9443ec383063d12fd7c7e715502
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/63615/
  
Dropped by
MD5 f64c257e930a972f59c35e33fcfbf8d8

Comments