MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 531fb63826f4d36eb31debe554073a4f4a73eaca264699b21e24e912b831f81a. 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: 15


Intelligence 15 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 531fb63826f4d36eb31debe554073a4f4a73eaca264699b21e24e912b831f81a
SHA3-384 hash: 742afc303cbe60ddc61886259cb1c822ba5e537fcf8ad9b038fc215f97c69e41971e69136574a8d7dc24ec2155eb5681
SHA1 hash: d984a3b537114a8005a59e922c4cbaec6f3dcd2c
MD5 hash: df6e8e8955acdb9b0864f25d442f43c5
humanhash: pasta-massachusetts-gee-oxygen
File name:xffRCvQIkXWb.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:33'792 bytes
First seen:2024-04-13 19:20:38 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 384:Jl+PkjD9+E5MFs7iui8L7zKM42pfL3iB7OxVqWFiRApkFXBLTsOZwpGN2v99Ikuo:r+CD93W03v42JiB70SVF49jocOjhQbN
TLSH T107E24B4877E44626DAEE6FF528F391050270D917C923EFAE0CE485DA2B67AC187407F6
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter pmelson
Tags:AsyncRAT exe xworm

Intelligence

File Origin
# of uploads :
1
# of downloads :
317
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
531fb63826f4d36eb31debe554073a4f4a73eaca264699b21e24e912b831f81a.exe
Verdict:
Malicious activity
Analysis date:
2024-04-13 19:36:15 UTC
Tags:
xworm
Link:
https://app.any.run/tasks/332b8e58-e152-4444-8bdd-f10ec121ae1f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Connection attempt
Launching a process
Moving a file to the Program Files subdirectory
Replacing files
Sending an HTTP GET request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm njrat
Link:
https://www.filescan.io/uploads/661adb21acb99fc8ffbf4312/reports/25a612fa-6660-4240-8eec-575401aa536e/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/531fb63826f4d36eb31debe554073a4f4a73eaca264699b21e24e912b831f81a
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/f42d3bfa-2ff4-4227-99c7-f82363ee60ce
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1425525
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Uses dynamic DNS services
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/531fb63826f4d36eb31debe554073a4f4a73eaca264699b21e24e912b831f81a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/531fb63826f4d36eb31debe554073a4f4a73eaca264699b21e24e912b831f81a/
Threat name:
ByteCode-MSIL.Backdoor.XWorm
Create hunting rule
Status:
Malicious
First seen:
2024-04-13 19:21:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 23 (95.65%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kmp3mobg6tjw5my55psvibz2j5fhh2wkezdjtmq6eturfobr7ana._file
Verdict:
malicious
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm rat trojan
Link:
https://tria.ge/reports/240413-x2m2sabf6z/
Behaviour
Suspicious use of AdjustPrivilegeToken
Detect Xworm Payload
Xworm
Malware Config
C2 Extraction:
warzones12.duckdns.org:7000
Unpacked files
SH256 hash:
531fb63826f4d36eb31debe554073a4f4a73eaca264699b21e24e912b831f81a
MD5 hash:
df6e8e8955acdb9b0864f25d442f43c5
SHA1 hash:
d984a3b537114a8005a59e922c4cbaec6f3dcd2c
Detections:
XWorm
Create hunting rule
MALWARE_Win_XWorm
Create hunting rule
win_mal_XWorm
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
MALWARE_Win_AsyncRAT
Create hunting rule
Link:
https://www.unpac.me/results/670b7ac7-fa18-41e8-b02c-27963d7bb99a/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.92
Link:
https://yomi.yoroi.company/submissions/531fb63826f4d36eb31debe554073a4f4a73eaca264699b21e24e912b831f81a

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: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:Windows_Generic_Threat_dbae6542
Create hunting rule
Author:Elastic Security

File information

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

Web download

AsyncRAT

Executable exe 531fb63826f4d36eb31debe554073a4f4a73eaca264699b21e24e912b831f81a

(this sample)

  
Link
https://www.virustotal.com/gui/file/531fb63826f4d36eb31debe554073a4f4a73eaca264699b21e24e912b831f81a/detection
  
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