MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6350738bfa77cac9f7d5fa6d37be84e5ae6cc48aed2baba6c78b88fe812834f. 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: 14


Intelligence 14 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b6350738bfa77cac9f7d5fa6d37be84e5ae6cc48aed2baba6c78b88fe812834f
SHA3-384 hash: 3a94ed170deea122538c09136e44588681125d51654c4efb221ab1819effb6d1e9f7e2c5e4f796488710de94e511e2d9
SHA1 hash: fd99aaf479a20a8e91b57308000334b9e9447bdc
MD5 hash: fef6cb0ab73a8f719cb2bde9675a6c65
humanhash: lactose-beryllium-fillet-beryllium
File name:doc20260830_900019990001.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:988'160 bytes
First seen:2026-08-31 07:02:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'202 x AgentTesla, 20'373 x Formbook, 12'365 x SnakeKeylogger)
ssdeep 24576:cfUNuA6gK9vNGQyzEzN2Vm/8OGzuzmbE9Yp1xMEYEIHz:6UggK91GQSGYVm/8OGxp1xM0+
TLSH T10A25F14423ADDA16D1E21BF00A70D3B41BB89E45A521D3079FFABDEFB93A7446904363
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
dhash icon 50b074e4c4e434d0 (2 x Formbook, 1 x AsyncRAT, 1 x RemcosRAT)
Reporter threatcat_ch
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
162
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/29656901-5ba0-4d9a-a2cc-222351e861eb/
Detection:
XWorm
Create hunting rule
Link:
https://www.capesandbox.com/analysis/83385/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.96768394.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Creating a window
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Launching a process
Blocking the Windows Defender launch
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Connection attempt to an infection source
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b6350738bfa77cac9f7d5fa6d37be84e5ae6cc48aed2baba6c78b88fe812834f
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-08-30T21:48:00Z UTC
Last seen:
2026-09-02T04:21:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/b6350738bfa77cac9f7d5fa6d37be84e5ae6cc48aed2baba6c78b88fe812834f/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/fc116abf-43ce-4b48-b388-11bcab1cd79c
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1966005
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Creates an autostart registry key pointing to binary in C:\Windows
Creates autostart registry keys with suspicious values (likely registry only malware)
Found malware configuration
Injects a PE file into a foreign processes
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
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Silenttrinity Stager Msbuild Activity
Suricata IDS alerts for network traffic
Suspicious powershell command line found
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1966005 Sample: doc20260830_900019990001.exe Startdate: 31/08/2026 Architecture: WINDOWS Score: 100 36 pki-goog.l.google.com 2->36 38 mr-b01.tm-azurefd.net 2->38 40 7 other IPs or domains 2->40 46 Suricata IDS alerts for network traffic 2->46 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 15 other signatures 2->52 8 doc20260830_900019990001.exe 1 6 2->8         started        12 powershell.exe 11 2->12         started        14 powershell.exe 2->14         started        signatures3 process4 file5 30 C:\Users\user\AppData\Roaming\mea.exe, PE32 8->30 dropped 32 C:\Users\...\doc20260830_900019990001.exe.log, ASCII 8->32 dropped 54 Creates autostart registry keys with suspicious values (likely registry only malware) 8->54 56 Creates an autostart registry key pointing to binary in C:\Windows 8->56 58 Writes to foreign memory regions 8->58 60 3 other signatures 8->60 16 MSBuild.exe 2 8->16         started        20 powershell.exe 23 8->20         started        22 conhost.exe 12->22         started        24 conhost.exe 14->24         started        signatures6 process7 dnsIp8 34 217.60.195.74, 443, 49706 NETPOOLIN Netherlands 16->34 42 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 16->42 44 Loading BitLocker PowerShell Module 20->44 26 WmiPrvSE.exe 20->26         started        28 conhost.exe 20->28         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b6350738bfa77cac9f7d5fa6d37be84e5ae6cc48aed2baba6c78b88fe812834f
Verdict:
inconclusive
YARA:
6 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.33 Win 32 Exe x86
Link:
https://app.malva.re/file/fef6cb0ab73a8f719cb2bde9675a6c65
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b6350738bfa77cac9f7d5fa6d37be84e5ae6cc48aed2baba6c78b88fe812834f/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Suspicious
First seen:
2026-08-31 03:28:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
25 of 37 (67.57%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wy2qoof7u56kzh35l6tng67ijznontciv3jlvotmpc4i72asqnhq._file
Verdict:
malicious
Label(s):
XWorm
Create hunting rule
Link:
https://reports.threatray.com/374c37ee-3f86-47d2-8e54-60955f0eaf11
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm discovery evasion execution persistence rat trojan
Link:
https://tria.ge/reports/260831-hvgh4aen4y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Detect Xworm Payload
Family: Xworm
Modifies Windows Defender DisableAntiSpyware settings
Malware Config
C2 Extraction:
217.60.195.74:443
Unpacked files
SH256 hash:
b6350738bfa77cac9f7d5fa6d37be84e5ae6cc48aed2baba6c78b88fe812834f
MD5 hash:
fef6cb0ab73a8f719cb2bde9675a6c65
SHA1 hash:
fd99aaf479a20a8e91b57308000334b9e9447bdc
Link:
https://www.unpac.me/results/0761100b-c289-4b91-8808-1f81fa1097df/
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b6350738bfa7/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/b6350738bfa77cac9f7d5fa6d37be84e5ae6cc48aed2baba6c78b88fe812834f

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:detect_powershell
Create hunting rule
Author:daniyyell
Description:Detects suspicious PowerShell activity related to malware execution
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Malspam

AsyncRAT

Executable exe b6350738bfa77cac9f7d5fa6d37be84e5ae6cc48aed2baba6c78b88fe812834f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/83385/

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