MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6b8231cfbb3eb07ecfc10da7e3a67071ef5a53243c113aa74f870734e8d17c3. 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


AsyncRAT


Vendor detections: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b6b8231cfbb3eb07ecfc10da7e3a67071ef5a53243c113aa74f870734e8d17c3
SHA3-384 hash: 94830d0e8282ec14e1af0e36a662f804d1604f6d46ab7a8ead3ab965645f3a64e4b2cdb85065b517db866e454c31aed7
SHA1 hash: 6068369f559fc773f7fc8ebe941a6a19867744f3
MD5 hash: 312c77c62d257957da6aab50f3f63ba2
humanhash: muppet-zebra-five-neptune
File name:loader.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:29'696 bytes
First seen:2026-01-20 20:38:55 UTC
Last seen:2026-01-21 08:24:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 994fec77863c87e5e434d9b420e4b3a1 (1 x AsyncRAT)
ssdeep 768:MqaDHqo4IgOWO6XfGg5hFb5Sxkpkh0+Yj2mLpUb5pVrayX3Qgis:MqYHxXdhmfjz10q5ot5pVx
TLSH T1BCD20953A6AC05ADE1B693B5C9725E01C736BC164BA2E3CF8350916E0F297C1BD35F0A
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter burger
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
134
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
64thServices.lnk
Verdict:
Malicious activity
Analysis date:
2026-01-20 20:35:59 UTC
Tags:
susp-lnk devtunnel rmm-tool loader anti-evasion
Link:
https://app.any.run/tasks/437a3a86-b2cc-4c3b-bc7e-8966685f061c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/49581/
Detection(s):
SecuriteInfo.com.Trojan.Siggen32.19509.7501.11747.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=696fe7cfbcad3327ec06f89e
Tags:
shell virus remo
Verdict:
Malicious
Labled as:
TrojanDownloader/Agent.bjl
Link:
https://www.hybrid-analysis.com/sample/b6b8231cfbb3eb07ecfc10da7e3a67071ef5a53243c113aa74f870734e8d17c3
Verdict:
Adware
File Type:
exe x64
First seen:
2026-01-17T17:36:00Z UTC
Last seen:
2026-01-22T06:23:00Z UTC
Hits:
~10
Detections:
NetTool.TunnelVisualStudio.UDP.C&C
Link:
https://opentip.kaspersky.com/b6b8231cfbb3eb07ecfc10da7e3a67071ef5a53243c113aa74f870734e8d17c3/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/313ed01f-b2f4-4665-bbad-3d8f732887cc
Result
Threat name:
AsyncRAT, Dacic, DcRat
Create hunting rule
Detection:
malicious
Classification:
phis.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1854385
Signature
Adds a directory exclusion to Windows Defender
AI detected malicious page (phishing or scam)
Antivirus detection for dropped file
Antivirus detection for URL or domain
Drops executables to the windows directory (C:\Windows) and starts them
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Queries memory information (via WMI often done to detect virtual machines)
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes)
Sample uses string decryption to hide its real strings
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: System File Execution Location Anomaly
Sigma detected: Windows Binaries Write Suspicious Extensions
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Dacic
Yara detected DcRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1854385 Sample: loader.exe Startdate: 20/01/2026 Architecture: WINDOWS Score: 100 68 gl1g7tts-5500.euw.devtunnels.ms 2->68 70 v3-euw.cluster.rel.tunnels.api.visualstudio.com 2->70 72 3 other IPs or domains 2->72 84 Found malware configuration 2->84 86 Malicious sample detected (through community Yara rule) 2->86 88 Antivirus detection for URL or domain 2->88 90 16 other signatures 2->90 10 loader.exe 15 2->10         started        15 WMIRegistrationServices.exe 2->15         started        signatures3 process4 dnsIp5 80 tunnels-prod-rel-euw-v3-cluster.westeurope.cloudapp.azure.com 20.103.221.187, 443, 49716, 49757 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 10->80 58 C:\Windows\System32\rvquxckm.exe, PE32+ 10->58 dropped 104 Suspicious powershell command line found 10->104 106 Drops executables to the windows directory (C:\Windows) and starts them 10->106 108 Adds a directory exclusion to Windows Defender 10->108 17 rvquxckm.exe 14 9 10->17         started        22 powershell.exe 23 10->22         started        24 chrome.exe 2 10->24         started        26 conhost.exe 10->26         started        82 157.97.11.134, 8080 NOVAIS-ASIS Iceland 15->82 110 Antivirus detection for dropped file 15->110 112 Multi AV Scanner detection for dropped file 15->112 114 Protects its processes via BreakOnTermination flag 15->114 116 Queries memory information (via WMI often done to detect virtual machines) 15->116 file6 signatures7 process8 dnsIp9 64 prod.keyauth.com 104.21.60.97, 443, 49759 CLOUDFLARENETUS United States 17->64 54 C:\Users\user\...\RuntimeBroker.exe (copy), PE32 17->54 dropped 56 C:\Users\user\AppData\Local\Temp\1.pdb, PE32 17->56 dropped 92 Multi AV Scanner detection for dropped file 17->92 94 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 17->94 96 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 17->96 100 2 other signatures 17->100 28 RuntimeBroker.exe 17->28         started        98 Loading BitLocker PowerShell Module 22->98 32 conhost.exe 22->32         started        34 WmiPrvSE.exe 22->34         started        66 192.168.2.4, 138, 443, 49258 unknown unknown 24->66 36 chrome.exe 24->36         started        file10 signatures11 process12 dnsIp13 60 C:\Users\user\...\WMIRegistrationServices.exe, PE32 28->60 dropped 62 C:\Users\user\...\RuntimeBroker.exe.log, CSV 28->62 dropped 118 Protects its processes via BreakOnTermination flag 28->118 120 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 28->120 122 Queries memory information (via WMI often done to detect virtual machines) 28->122 39 cmd.exe 28->39         started        42 cmd.exe 28->42         started        74 www.google.com 142.250.72.132, 443, 49739 GOOGLEUS United States 36->74 76 a.nel.cloudflare.com 35.190.80.1, 443, 49729, 49732 GOOGLEUS United States 36->76 78 5 other IPs or domains 36->78 file14 signatures15 process16 signatures17 102 Uses schtasks.exe or at.exe to add and modify task schedules 39->102 44 conhost.exe 39->44         started        46 schtasks.exe 39->46         started        48 conhost.exe 42->48         started        50 timeout.exe 42->50         started        52 WMIRegistrationServices.exe 42->52         started        process18
Score:
92%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b6b8231cfbb3eb07ecfc10da7e3a67071ef5a53243c113aa74f870734e8d17c3
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/312c77c62d257957da6aab50f3f63ba2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b6b8231cfbb3eb07ecfc10da7e3a67071ef5a53243c113aa74f870734e8d17c3/
Verdict:
Malicious
Threat:
NetTool.TunnelVisualStudio.UDP
Link:
https://tip.neiki.dev/file/b6b8231cfbb3eb07ecfc10da7e3a67071ef5a53243c113aa74f870734e8d17c3
Threat name:
Win64.Downloader.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-01-17 19:40:25 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
17 of 38 (44.74%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w24cghh3wpvqp3h4cdnh4otha4ppljjsiparhktu7byhgtunc7bq._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
defense_evasion discovery execution
Link:
https://tria.ge/reports/260120-zfevdsav5e/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Browser Information Discovery
Enumerates physical storage devices
System Time Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Checks computer location settings
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
Looks for VMWare Tools registry key
Looks for VMWare services registry key.
Enumerates VirtualBox registry keys
Looks for VirtualBox Guest Additions in registry
Unpacked files
SH256 hash:
b6b8231cfbb3eb07ecfc10da7e3a67071ef5a53243c113aa74f870734e8d17c3
MD5 hash:
312c77c62d257957da6aab50f3f63ba2
SHA1 hash:
6068369f559fc773f7fc8ebe941a6a19867744f3
Link:
https://www.unpac.me/results/b8f6ece5-631a-4e64-abb1-22b6798ea07b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b6b8231cfbb3/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/b6b8231cfbb3eb07ecfc10da7e3a67071ef5a53243c113aa74f870734e8d17c3

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
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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.

AsyncRAT

rar f43f3b219f27796ee12728eab47196ca3f331f5daccbb3e010f82a860ec12367

AsyncRAT

Shortcut (lnk) lnk c880eb64e7ffc7b6b75a4bd994ca8c0c98943ffd77ddfd918e2851d7a61887dd

AsyncRAT

Executable exe b6b8231cfbb3eb07ecfc10da7e3a67071ef5a53243c113aa74f870734e8d17c3

(this sample)

  
Dropped by
SHA256 c880eb64e7ffc7b6b75a4bd994ca8c0c98943ffd77ddfd918e2851d7a61887dd
  
Dropped by
MD5 6d5c12b0a083f3ca5be7a37c41768bb6
Cape
Cape
https://www.capesandbox.com/analysis/49581/
  
URLhaus
https://urlhaus.abuse.ch/url/3761146/
  
Delivery method
Distributed via web download

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