MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 73b3bcf1b9e69c85170700551a9028d21ad93e2dde55e8c7939e66c82b3eb2ec. 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: 10
| SHA256 hash: | 73b3bcf1b9e69c85170700551a9028d21ad93e2dde55e8c7939e66c82b3eb2ec |
|---|---|
| SHA3-384 hash: | 632e35e8b51c60393bb857aba3d951b6e5f0a02a494eb974e72d6d8cf2380adddcef45bc3a6f698e3185e83153910077 |
| SHA1 hash: | aca1fe417e4a07a3928381b9fafc6278bf8caf05 |
| MD5 hash: | 6f67ca695bae95a13f4b398e2eede338 |
| humanhash: | snake-double-lactose-uranus |
| File name: | Contract.vbs |
| Download: | download sample |
| Signature | AsyncRAT |
| File size: | 1'271'934 bytes |
| First seen: | 2026-02-27 17:13:55 UTC |
| Last seen: | Never |
| File type: |  vbs |
| MIME type: | text/plain |
| ssdeep | 768:W7NtEXSB4Phb6IHC6IdVG/tmbTyjTM55NM:j |
| TLSH | T15F451273867246B475CAD7381E1A18D7F436D9B014EA2D7725C20B84F7B1A8F58CA2EC |
| Magika | txt |
| Reporter |  abuse_ch |
| Tags: | AsyncRAT RAT vbs |
Intelligence
File Origin
# of uploads :
1
# of downloads :
56
Origin country :
SEVendor Threat Intelligence
No detections
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
97.4%
Tags:
autorun xtreme shell sage
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-vm base64 fingerprint obfuscated powershell
Verdict:
Malicious
Labled as:
PSH/Agent.WL
Verdict:
Malicious
File Type:
vbs
Detections:
HEUR:Trojan.Script.Generic Trojan.Agentb.TCP.C&C PDM:Trojan.Win32.Generic PDM:Trojan.Win32.GenAutorunSchedulerTaskRun.c Backdoor.Agent.TCP.C&C Trojan.Win32.Zapchast.bhgd Trojan.JS.SAgent.sb HEUR:Trojan.Win32.Agentb.gen
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Signature
Creates processes via WMI
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Score:
9%
Verdict:
Benign
File Type:
SCRIPT
Gathering data
Verdict:
Malicious
Threat:
Family.ASYNCRAT
Threat name:
Script-WScript.Backdoor.Xworm
Status:
Suspicious
First seen:
2026-02-26 06:41:37 UTC
File Type:
Binary
AV detection:
8 of 24 (33.33%)
Threat level:
5/5
Detection(s):
Malicious file
Result
Malware family:
n/a
Score:
10/10
Tags:
execution
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Process spawned unexpected child process
Malware Config
Dropper Extraction:
https://firebasestorage.googleapis.com/v0/b/tropa-14f0e.appspot.com/o/MSI_PRO_with_b64.png?alt=media&token=57781f14-c689-48cf-abec-fa2f33a56f0d
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
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 |
|---|---|
| Author: | ReversingLabs |
| Description: | Yara rule that detects AsyncRAT backdoor. |
| Rule name: | ClamAV_Emotet_String_Aggregate |
|---|
| Rule name: | Detect_PowerShell_Obfuscation |
|---|---|
| Author: | daniyyell |
| Description: | Detects obfuscated PowerShell commands commonly used in malicious scripts. |
| Rule name: | Disable_Defender |
|---|---|
| Author: | iam-py-test |
| Description: | Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Windows executables referencing non-Windows User-Agents |
| Rule name: | MALWARE_Win_AsyncRAT |
|---|---|
| Author: | ditekSHen |
| Description: | Detects AsyncRAT |
| Rule name: | MALWARE_Win_XWorm |
|---|---|
| Author: | ditekSHen |
| Description: | Detects XWorm |
| Rule name: | Multifamily_RAT_Detection |
|---|---|
| Author: | Lucas Acha (http://www.lukeacha.com) |
| Description: | Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | Njrat |
|---|---|
| Author: | botherder https://github.com/botherder |
| Description: | Njrat |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | SUSP_DOTNET_PE_List_AV |
|---|---|
| Author: | SECUINFRA Falcon Team |
| Description: | Detecs .NET Binary that lists installed AVs |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | win_xworm_w0 |
|---|---|
| Author: | jeFF0Falltrades |
| Description: | Detects win.xworm. |
| Rule name: | XWorm |
|---|---|
| Author: | ditekSHen |
| Description: | Detects XWorm |
| Rule name: | xworm_kingrat |
|---|---|
| Author: | jeFF0Falltrades |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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