MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 536c0da703e83f003d6a8902a4d7a9c75a0ef93cb6809349729dd733813b0c99. 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: 18


Intelligence 18 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 536c0da703e83f003d6a8902a4d7a9c75a0ef93cb6809349729dd733813b0c99
SHA3-384 hash: 591a34efdf2b6e3661258eaab29f001eca45e8518d3642b29b347039ef5ccc29a44b453d15fa90670c15405a666bb576
SHA1 hash: 12be6d26f6f4385213a0a9557b35e1f4171f23aa
MD5 hash: ff7ed8e6f30e2d7f44f5414f9465d413
humanhash: failed-september-louisiana-ceiling
File name:Steam.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:156'672 bytes
First seen:2025-03-13 11:25:09 UTC
Last seen:2025-03-13 13:36:27 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 3072:40PB6TYWbi0EsjQo5O3ttZj7Iq+gJTefW:4065blEsMvznh+g
TLSH T15DE39F9877D54415FBFF9A7828EA73159A3AFE93ED03A10F01D432CE29336894D81866
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon d4e6e6d3f2bcc870 (3 x RedLineStealer, 1 x BitRAT, 1 x LaplasClipper)
Reporter BastianHein
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
426
Origin country :
CL CL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Steam.exe
Verdict:
Suspicious activity
Analysis date:
2025-03-13 11:30:12 UTC
Tags:
evasion
Link:
https://app.any.run/tasks/5aaf9080-bff8-4b24-94ce-a3978eb955ed

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67d2c33e3962f1a6f470c882
Tags:
asyncrat autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Creating a process with a hidden window
Creating a file in the %AppData% directory
Launching a process
Sending a custom TCP request
Creating a window
Enabling the 'hidden' option for recently created files
Connection attempt to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
Creating a file in the mass storage device
Query of malicious DNS domain
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/536c0da703e83f003d6a8902a4d7a9c75a0ef93cb6809349729dd733813b0c99
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/136424ab-b64c-4d54-a624-7a31ede39abd
Result
Threat name:
AsyncRAT, XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1637236
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
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Connects to a pastebin service (likely for C&C)
Connects to many ports of the same IP (likely port scanning)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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 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: Powershell Base64 Encoded MpPreference Cmdlet
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 XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1637236 Sample: Steam.exe Startdate: 13/03/2025 Architecture: WINDOWS Score: 100 40 pastebin.com 2->40 42 sywaxeha-41850.portmap.host 2->42 44 ip-api.com 2->44 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 Antivirus / Scanner detection for submitted sample 2->56 60 12 other signatures 2->60 8 Steam.exe 15 6 2->8         started        13 Steam 2->13         started        15 OpenWith.exe 2->15         started        17 2 other processes 2->17 signatures3 58 Connects to a pastebin service (likely for C&C) 40->58 process4 dnsIp5 46 sywaxeha-41850.portmap.host 193.161.193.99, 41850, 49724, 49725 BITREE-ASRU Russian Federation 8->46 48 ip-api.com 208.95.112.1, 49714, 80 TUT-ASUS United States 8->48 50 pastebin.com 104.20.3.235, 443, 49722 CLOUDFLARENETUS United States 8->50 38 C:\Users\user\AppData\Roaming\Steam, PE32 8->38 dropped 64 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 8->64 66 Protects its processes via BreakOnTermination flag 8->66 68 Bypasses PowerShell execution policy 8->68 74 4 other signatures 8->74 19 powershell.exe 23 8->19         started        22 powershell.exe 23 8->22         started        24 powershell.exe 21 8->24         started        26 2 other processes 8->26 70 Antivirus detection for dropped file 13->70 72 Multi AV Scanner detection for dropped file 13->72 file6 signatures7 process8 signatures9 62 Loading BitLocker PowerShell Module 19->62 28 conhost.exe 19->28         started        30 conhost.exe 22->30         started        32 conhost.exe 24->32         started        34 conhost.exe 26->34         started        36 conhost.exe 26->36         started        process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/536c0da703e83f003d6a8902a4d7a9c75a0ef93cb6809349729dd733813b0c99
Detection:
xworm
Create hunting rule
Link:
https://mwdb.cert.pl/sample/536c0da703e83f003d6a8902a4d7a9c75a0ef93cb6809349729dd733813b0c99/
Threat name:
Win32.Exploit.Xworm
Create hunting rule
Status:
Malicious
First seen:
2025-03-13 11:26:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
26
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=knwa3jyd5a7qaplkrebkjv5jy5na56j4w2ajgslstxlthaj3bsmq._file
Verdict:
malicious
Label(s):
xworm
Create hunting rule
Similar samples:
error
AsyncRAT
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm rat trojan
Link:
https://tria.ge/reports/250313-njcnna1whv/
Behaviour
Suspicious use of AdjustPrivilegeToken
Looks up external IP address via web service
Detect Xworm Payload
Xworm
Xworm family
Verdict:
Malicious
Tags:
rat xworm Win.Packed.njRAT-10002074-1 external_ip_lookup
YARA:
win_mal_XWorm EXE_RAT_XWorm_April2024 MALWARE_Win_XWorm win_xworm_bytestring
Link:
https://app.threat.zone/submission/267eb891-571a-4d1e-a191-0f36635e1f42
Unpacked files
SH256 hash:
536c0da703e83f003d6a8902a4d7a9c75a0ef93cb6809349729dd733813b0c99
MD5 hash:
ff7ed8e6f30e2d7f44f5414f9465d413
SHA1 hash:
12be6d26f6f4385213a0a9557b35e1f4171f23aa
Detections:
win_xworm_w0
Create hunting rule
Link:
https://www.unpac.me/results/2dc933ba-78f5-434b-ab3f-63b4ac40609a/
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/536c0da703e8/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/536c0da703e83f003d6a8902a4d7a9c75a0ef93cb6809349729dd733813b0c99

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:ByteCode_MSIL_Backdoor_AsyncRAT
Create hunting rule
Author:ReversingLabs
Description:Yara rule that detects AsyncRAT backdoor.
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
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:EXE_RAT_XWorm_April2024
Create hunting rule
Author:Yashraj Solanki - Cyber Threat Intelligence Analyst at Bridewell
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:MALWARE_Win_AsyncRAT
Create hunting rule
Author:ditekSHen
Description:Detects AsyncRAT
Rule name:MALWARE_Win_XWorm
Create hunting rule
Author:ditekSHen
Description:Detects XWorm
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NETexecutableMicrosoft
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:SUSP_DOTNET_PE_List_AV
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detecs .NET Binary that lists installed AVs
Rule name:win_xworm_bytestring
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects bytestring present in unobfuscated xworm
Rule name:win_xworm_w0
Create hunting rule
Author:jeFF0Falltrades
Description:Detects win.xworm.
Rule name:xworm
Create hunting rule
Author:jeFF0Falltrades
Rule name:XWorm
Create hunting rule
Author:ditekSHen
Description:Detects XWorm
Rule name:xworm_kingrat
Create hunting rule
Author:jeFF0Falltrades

File information

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

Web download

AsyncRAT

Executable exe 536c0da703e83f003d6a8902a4d7a9c75a0ef93cb6809349729dd733813b0c99

(this sample)

  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments