MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 10c414a03c052e4e9a249d2398cba72a47469c1314b04d534e5f7a06b5f29781. 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: 21


Intelligence 21 IOCs YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 10c414a03c052e4e9a249d2398cba72a47469c1314b04d534e5f7a06b5f29781
SHA3-384 hash: 5a4120e301857a9e331e91a084a86f0e8e0d1b1450eff6d2426cffe00e03738864b518a330847bbf8053b5df7103be8d
SHA1 hash: 8f746fcad9e6b82696eea32362604fd1eb83c721
MD5 hash: 074b40d4a7198837cad1739a50031fc3
humanhash: echo-thirteen-don-eighteen
File name:Umbral.builder.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:45'056 bytes
First seen:2025-08-21 11:20:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 768:50LIQRRgS/QjHFKuu3amxHpufFWPr9056POwhNaQDC1:yL3fr/GHFKuu3am5EFS9056POwP2
TLSH T10A135B087B904221D9AD7BF019B2D67A0B31EE03A913D74E4DD0BE9B3B776948D807E5
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 8271cc8eb0984992 (1 x XWorm, 1 x AsyncRAT)
Reporter burger
Tags:AsyncRAT exe xworm

Intelligence

File Origin
# of uploads :
1
# of downloads :
119
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Umbral.builder.exe
Verdict:
Malicious activity
Analysis date:
2025-08-21 11:19:49 UTC
Tags:
auto-startup auto-reg xworm
Link:
https://app.any.run/tasks/b69b2336-cf34-4fed-8ae4-963794ab8755

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
XWorm
Create hunting rule
Link:
https://www.capesandbox.com/analysis/22760/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68a7010fc2f5296a1a288556
Tags:
asyncrat autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Launching a process
Creating a window
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
Query of malicious DNS domain
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm base64 fingerprint lolbin njrat njrat rat reconnaissance schtasks vbnet xworm
Link:
https://www.filescan.io/uploads/68a701164a87ed796766cf00/reports/8e16823c-8bdd-4562-9682-d9c53c9e9778/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/10c414a03c052e4e9a249d2398cba72a47469c1314b04d534e5f7a06b5f29781
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/970b5c69-59cf-4e5d-b472-e85cd266f83a
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1761928
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
Contains functionality to log keystrokes (.Net Source)
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
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1761928 Sample: Umbral.builder.exe Startdate: 21/08/2025 Architecture: WINDOWS Score: 100 42 may-steering.gl.at.ply.gg 2->42 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus / Scanner detection for submitted sample 2->50 52 9 other signatures 2->52 8 Umbral.builder.exe 1 6 2->8         started        13 svhost.exe 2->13         started        15 svhost.exe 2->15         started        17 3 other processes 2->17 signatures3 process4 dnsIp5 44 may-steering.gl.at.ply.gg 147.185.221.30, 62208 SALSGIVERUS United States 8->44 40 C:\Users\user\AppData\Roaming\svhost.exe, PE32 8->40 dropped 56 Protects its processes via BreakOnTermination flag 8->56 58 Bypasses PowerShell execution policy 8->58 60 Uses schtasks.exe or at.exe to add and modify task schedules 8->60 62 Adds a directory exclusion to Windows Defender 8->62 19 powershell.exe 23 8->19         started        22 powershell.exe 23 8->22         started        24 powershell.exe 23 8->24         started        26 4 other processes 8->26 64 Antivirus detection for dropped file 13->64 66 Multi AV Scanner detection for dropped file 13->66 file6 signatures7 process8 signatures9 54 Loading BitLocker PowerShell Module 19->54 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        38 WerFault.exe 26->38         started        process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/10c414a03c052e4e9a249d2398cba72a47469c1314b04d534e5f7a06b5f29781
Verdict:
njRat
YARA:
18 match(es)
Tags:
.Net Executable Managed .NET njRat PE (Portable Executable) PE File Layout RAT SOS: 0.23 Win 32 Exe x86 XWorm
Malware Config
C2 Extraction:
CNC: may-steering.gl.at.ply.gg
PORT: 62208
Link:
https://app.malva.re/file/074b40d4a7198837cad1739a50031fc3
Detection:
xworm
Create hunting rule
Link:
https://mwdb.cert.pl/sample/10c414a03c052e4e9a249d2398cba72a47469c1314b04d534e5f7a06b5f29781/
Verdict:
Malicious
Threat:
Family.XWORM
Link:
https://tip.neiki.dev/file/10c414a03c052e4e9a249d2398cba72a47469c1314b04d534e5f7a06b5f29781
Threat name:
ByteCode-MSIL.Backdoor.XWormRAT
Create hunting rule
Status:
Malicious
First seen:
2025-08-21 11:19:49 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
32 of 37 (86.49%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cdcbjib4auxe5greturzrs5hfjdunhatcsye2u2ol55annpss6aq._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 defense_evasion execution persistence rat trojan
Link:
https://tria.ge/reports/250821-nfqfcaspw3/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Adds Run key to start application
Checks computer location settings
Drops startup file
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Modifies trusted root certificate store through registry
Detect Xworm Payload
Xworm
Xworm family
Malware Config
C2 Extraction:
may-steering.gl.at.ply.gg:62208
Verdict:
Malicious
Tags:
rat xworm Win.Packed.njRAT-10002074-1
YARA:
MALWARE_Win_XWorm win_mal_XWorm win_xworm_bytestring
Link:
https://app.threat.zone/submission/1a4a758d-f26d-455c-a196-927296360090
Unpacked files
SH256 hash:
10c414a03c052e4e9a249d2398cba72a47469c1314b04d534e5f7a06b5f29781
MD5 hash:
074b40d4a7198837cad1739a50031fc3
SHA1 hash:
8f746fcad9e6b82696eea32362604fd1eb83c721
Detections:
win_xworm_w0
Create hunting rule
Link:
https://www.unpac.me/results/519d8d08-90cd-46b7-b0b0-abc4bade97e7/
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/10c414a03c05/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/10c414a03c052e4e9a249d2398cba72a47469c1314b04d534e5f7a06b5f29781

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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: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:Njrat
Create hunting rule
Author:botherder https://github.com/botherder
Description:Njrat
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: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)
Rule name:Windows_Trojan_XWorm_b7d6eaa8
Create hunting rule
Author:Elastic Security
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.

Cape
Cape
https://www.capesandbox.com/analysis/22760/

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