MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b60cc2b3d4b652eb9fa07324b40ddf65ed4f61f45a7ff903ac3d1687a096b90. 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: 17


Intelligence 17 IOCs YARA 16 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b60cc2b3d4b652eb9fa07324b40ddf65ed4f61f45a7ff903ac3d1687a096b90
SHA3-384 hash: 509973ed0a884d278e41f3238c45364e394a7dd60349f73213a92b2eb5f9746e23668321f16a409d00732bc1363eb6d8
SHA1 hash: d041d0ca8303bd2956f08b27360a61cd0788c76b
MD5 hash: b3b324c1e2170e9f366987fece3338e1
humanhash: washington-green-video-six
File name:Clientbuild.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:69'632 bytes
First seen:2025-05-21 22:36:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 1536:a1aY75MSslhZdUHQfp1s7p9bZz9ILL6KdO63O2SceFWfab:a1aY75wVB699bZz+5hOuhab
TLSH T1D1637C5C7BE50529E4FFABB11EF27252CA79F7231803EB5F24C5058A1623A88CE416F5
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
Reporter skocherhan
Tags:AsyncRAT exe thomson101


Avatar
skocherhan
https://github.com/thomson101/wantest/releases/download/Release/Clientbuild.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
515
Origin country :
GB GB
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Clientbuild.exe
Verdict:
Malicious activity
Analysis date:
2025-05-21 22:53:18 UTC
Tags:
crypto-regex xworm auto-reg auto-startup
Link:
https://app.any.run/tasks/88ac14f9-71ef-4050-a57f-eadb7d4098ee

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.njRAT-10002074-1
Create hunting rule

Win.Packed.Msilzilla-10002982-0
Create hunting rule

Win.Packed.Msilzilla-10019837-0
Create hunting rule

Win.Packed.Loveletter-10023052-0
Create hunting rule

Win.Dropper.Nanocore-10024427-0
Create hunting rule

Win.Packed.Loveletter-10024677-0
Create hunting rule

Win.Packed.Msilzilla-10026193-0
Create hunting rule

Win.Malware.Deepscan-10028866-0
Create hunting rule

ditekSHen.MALWARE.Win.Trojan.AsyncRAT.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=682e57e0c28c67d66643fa12
Tags:
asyncrat autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Creating a window
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm asyncrat backdoor base64 fingerprint lolbin obfuscated obfuscated rat reconnaissance schtasks vbnet xworm
Link:
https://www.filescan.io/uploads/682e55ad985349514e5cae09/reports/a9e97e0c-920c-4a3d-a772-770c7ab14aa2/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/4b60cc2b3d4b652eb9fa07324b40ddf65ed4f61f45a7ff903ac3d1687a096b90
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/57fe5327-341f-4dcd-87b1-7a5fdc6eea38
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1696376
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
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: 1696376 Sample: Clientbuild.exe Startdate: 22/05/2025 Architecture: WINDOWS Score: 100 40 pki-goog.l.google.com 2->40 42 c.pki.goog 2->42 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus / Scanner detection for submitted sample 2->52 54 8 other signatures 2->54 8 Clientbuild.exe 1 6 2->8         started        13 write64.exe 2->13         started        15 write64.exe 2->15         started        17 4 other processes 2->17 signatures3 process4 dnsIp5 44 103.245.237.11, 49693, 49695, 49696 ABOVE-AS-APAboveNetCommunicationsTaiwanTW unknown 8->44 46 127.0.0.1 unknown unknown 8->46 38 C:\Users\user\AppData\Roaming\write64.exe, PE32 8->38 dropped 58 Protects its processes via BreakOnTermination flag 8->58 60 Bypasses PowerShell execution policy 8->60 62 Uses schtasks.exe or at.exe to add and modify task schedules 8->62 64 Adds a directory exclusion to Windows Defender 8->64 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 66 Antivirus detection for dropped file 13->66 68 Multi AV Scanner detection for dropped file 13->68 file6 signatures7 process8 signatures9 56 Loading BitLocker PowerShell Module 19->56 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/4b60cc2b3d4b652eb9fa07324b40ddf65ed4f61f45a7ff903ac3d1687a096b90
Detection:
xworm
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b60cc2b3d4b652eb9fa07324b40ddf65ed4f61f45a7ff903ac3d1687a096b90/
Threat name:
ByteCode-MSIL.Backdoor.XWormRAT
Create hunting rule
Status:
Malicious
First seen:
2025-05-21 22:37:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jnqmykz5jnss5op2a4zewqg56zpnj5q7iwt77eb2ypiwq6qjnoia._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 execution persistence rat trojan
Link:
https://tria.ge/reports/250521-2j1blsek4w/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
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
Detect Xworm Payload
Xworm
Xworm family
Malware Config
C2 Extraction:
103.245.237.11:8888
127.0.0.1:8888
Unpacked files
SH256 hash:
4b60cc2b3d4b652eb9fa07324b40ddf65ed4f61f45a7ff903ac3d1687a096b90
MD5 hash:
b3b324c1e2170e9f366987fece3338e1
SHA1 hash:
d041d0ca8303bd2956f08b27360a61cd0788c76b
Detections:
win_xworm_w0
Create hunting rule
Link:
https://www.unpac.me/results/ca6a5198-9bee-43d1-adc9-a9456dbf5289/
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4b60cc2b3d4b/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/4b60cc2b3d4b652eb9fa07324b40ddf65ed4f61f45a7ff903ac3d1687a096b90

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: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: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.

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


Avatar
commented on 2025-05-21 22:40:48 UTC

RAT King Parser (https://github.com/jeFF0Falltrades/rat_king_parser) Output:

{
"sha256": "4b60cc2b3d4b652eb9fa07324b40ddf65ed4f61f45a7ff903ac3d1687a096b90",
"yara_possible_family": "xworm",
"key": "a137fb776cf0d11e3d1b0bc7e4c8f5a137fb776cf0d11e3d1b0bc7e4c8f5ab00",
"salt": "None",
"config": {
"7x2LoslgVYjzVCojyFqHeayQkp0sj": "103.245.237.11,127.0.0.1",
"L33R47TlVdY5bpg9sc5B5gNVyeR00": "8888",
"4jbipniczzGDvYt073FjR4OpBZ2Eo": "<123456789>",
"O7nDGd5PjdShY0qJuST1uP5GMRFny": "<Xwormmm>",
"0SMVwj6lqozUPj7hX6ZXQrODzvzRDbL8Y8ZPK7ZrI7vLnOyE3fTnhHM6vFpaVjW41LEuwBKGmyUlA90MVahIG4H": null,
"traDvyt2l0PbacMwcD4YoHyNdg99hlgiydVuh3U2Io52wVWlPVglIN0Bzs8q0dNOqK1jjDiSm6BJvMliA2k7lM8": "XWorm V5.6",
"kCnFl34fZBNlnVyAKo7bxAl9yXk40RvqvDRczhIUpvceeX4YsFAUjjNNtoNuQLCpJcdmHDxE8yGZ70gCg9Lk0I3": "USB.exe",
"VJCWrz61qF0bpFln6XLWeXrznRqKn0e8ZFKsDCn5WZPyHnaLX6m1gmeixDJBM4rjNeWELMVpwANMg70vOX4DGAd": "%AppData%",
"JtcO0vd8zkN7ZaHFKgaBzxzpqlWRjUhAP28Vva4pnFpINiKWEYWxMEvu8XDozz6gp5iWCPZgLRHZkri8fZQeepZ": "write64.exe",
"0NpVAJLIYvluSvNqpjI6kOvJPhILYvvD2jnCYXmZYyEHzBpHYJ53PzpQMNcKMwJp8aOK1nKYFCD2VjGPcB1kL3C": "oIOCWQ9riXWhCXk3",
"UfNlmMXVi2aIoouYWNp6y6k4wAOKVQcYTk8nILEEwp8dGmyiV75vllkiPXGSENdWbQGK9v38TWe1r5r1xTjL2lL": "\\Log.tmp",
"PMEBbgKy6J4zT4kvBHQ4yPkMHsvbpBqGDk5O2FLDIv4mLQ2wy6TQCMhjoyVxpcch3SnetjhsiTjCcfsEhyBisoS": "bc1qljn79w6vzqmcmycvnqqw06835kd4qagmqkp5c9",
"Jv4Vq0loLI5JVtxzMoD3mZVkXV5hxxoX5mVXHjnhZUY9BgYaCuU8qUUbG8QidBdIZC0lZnP8UmDU6Uxtofa9Hzj": "0xd706789Ac7E61CBf44030f1265C5Bd5793BE9017",
"mqGUErAy9SuukYCqesB5JzCWF9hKLTqy6ye9auy0qFHV8qLHnoxQfxWcQyqapQYSBatk8IbEo2dBKEePwDceLMD": "Trc20 TAxtD13zzfE42o2RXAsKY47M1bfuH2ntXt"
}
}