MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f3831d6ca373f539fec77e975ae4fc26451bfb3113513813819ea1111f31a81a. 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 12 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f3831d6ca373f539fec77e975ae4fc26451bfb3113513813819ea1111f31a81a
SHA3-384 hash: 04ef65b25594bf624fc037ced13c877a097656891a91cca915f255d0c2a25b34f07ed69634bf1021a5a1066cfaaf30a7
SHA1 hash: 476b00d10869e5931bbb799d16f563ac803b50e3
MD5 hash: 230ef121bcb5b8c9b91a2c35788d60ca
humanhash: butter-purple-yellow-diet
File name:230ef121bcb5b8c9b91a2c35788d60ca
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:565'248 bytes
First seen:2024-06-19 07:12:33 UTC
Last seen:2024-06-19 08:24:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:Lk4LkZ1TeEfWh95SJ2nBjHsmFfLUQyih4+REAmD:bEfk90yMJ+R
TLSH T137C47D24A3968C4BFD0F667AA5D4B9A032232CB9C435730104FF3A6E35743AF199567E
TrID 35.4% (.EXE) Win64 Executable (generic) (10523/12/4)
22.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.1% (.EXE) Win32 Executable (generic) (4504/4/1)
6.9% (.ICL) Windows Icons Library (generic) (2059/9)
6.8% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 68d8d8c8d9a9c1d9 (96 x SnakeKeylogger, 67 x RemcosRAT, 66 x Formbook)
Reporter zbetcheckin
Tags:32 AsyncRAT exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
403
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f3831d6ca373f539fec77e975ae4fc26451bfb3113513813819ea1111f31a81a.exe
Verdict:
Malicious activity
Analysis date:
2024-06-19 07:13:57 UTC
Tags:
remote xworm
Link:
https://app.any.run/tasks/d7cd6eb3-0252-4211-8d9e-40fee13775da

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.TrojanX-gen.11557.8159.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6672871589a0563951fea5bbwin7simulatehigh_evasion
Tags:
Encryption Execution Generic Network Stealth Generic
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Launching a process
Enabling the 'hidden' option for analyzed file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Connection attempt
Using the Windows Management Instrumentation requests
Sending a custom TCP request
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/667284feef9fdf64aa6cb5e8/reports/36ae8cce-1201-4f3a-8650-1ec4764a709c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/f3831d6ca373f539fec77e975ae4fc26451bfb3113513813819ea1111f31a81a
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/1d0f5597-666f-4bbc-89be-b01cd5136da2
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1459346
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
AI detected suspicious sample
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Drops PE files to the startup folder
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
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: Copy file to startup via Powershell
Snort IDS alert for network traffic
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1459346 Sample: SiVbQ2bhla.exe Startdate: 19/06/2024 Architecture: WINDOWS Score: 100 45 Snort IDS alert for network traffic 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 13 other signatures 2->51 7 SiVbQ2bhla.exe 3 2->7         started        11 winxs.exe 3 2->11         started        13 svchost.exe 1 1 2->13         started        process3 dnsIp4 35 C:\Users\user\AppData\...\SiVbQ2bhla.exe.log, ASCII 7->35 dropped 53 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 7->53 55 Bypasses PowerShell execution policy 7->55 57 Injects a PE file into a foreign processes 7->57 16 powershell.exe 13 7->16         started        20 SiVbQ2bhla.exe 2 7->20         started        23 powershell.exe 11 11->23         started        25 winxs.exe 11->25         started        39 127.0.0.1 unknown unknown 13->39 file5 signatures6 process7 dnsIp8 31 C:\Users\user\AppData\Roaming\...\winxs.exe, PE32 16->31 dropped 33 C:\Users\user\...\winxs.exe:Zone.Identifier, ASCII 16->33 dropped 41 Drops PE files to the startup folder 16->41 43 Powershell drops PE file 16->43 27 conhost.exe 16->27         started        37 64.226.123.178, 49710, 6098 COGECO-PEER1CA Canada 20->37 29 conhost.exe 23->29         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f3831d6ca373f539fec77e975ae4fc26451bfb3113513813819ea1111f31a81a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f3831d6ca373f539fec77e975ae4fc26451bfb3113513813819ea1111f31a81a/
Threat name:
ByteCode-MSIL.Trojan.Snakelogger
Create hunting rule
Status:
Malicious
First seen:
2024-06-15 01:27:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6obr23fdop2tt7whp2lvvzh4ezcrx6zrcnitqe4bt2qrchzrvana._file
Verdict:
malicious
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm execution rat trojan
Link:
https://tria.ge/reports/240619-h13nhszhrq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Suspicious use of SetThreadContext
Drops startup file
Executes dropped EXE
Loads dropped DLL
Detect Xworm Payload
Xworm
Malware Config
C2 Extraction:
64.226.123.178:6098
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/500970cd-753d-4a73-a5fb-6707ffdb17d7
Unpacked files
SH256 hash:
45c7b64a55dca23ee1239649e03a7c361813dbcfc2a0817b0d8e94c907d6ed4b
MD5 hash:
fb1bc19121c4e190d83672bc71b493f0
SHA1 hash:
c3488b969ba578e28ee360be24b6416425a224a0
Link:
https://www.unpac.me/results/11698793-3ed9-4eee-a41a-c92d3c9c5656/
SH256 hash:
45455f1c7b23e9d84640ebaf720dd6b3ab16172c6a4262ead71d56fd0abed3ed
MD5 hash:
c2e6ffce0fba5a820b4e90db10639837
SHA1 hash:
b11d0d5da07297bfa17b418c2794c9054f2e8ccc
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/11698793-3ed9-4eee-a41a-c92d3c9c5656/
Parent samples :
522d14faeaa7b2b8886bcd75304ae4db1a9392477e9b465a458f9bfd8cfdd6a3
72db350204141827d99c4938c7e38d101e1a2d74250463070a1edbf4e49350bd
a8602f61da135d8dd308b6acb0338f9b9da4024f9ff302490800af85b242eeed
b6f14127cfa1cdd9fa4e8827ea094235a8328bdbb00d6b934d6832dd61401c7a
f3831d6ca373f539fec77e975ae4fc26451bfb3113513813819ea1111f31a81a
SH256 hash:
159697ff44d7cbc942ae55697b06096b8d87611631272e02e60622b012cbd69c
MD5 hash:
d15b5272a5c47d9c883b535d41b50629
SHA1 hash:
7da1c4fbf8b4f6688a6b82bc8e599d915113267a
Detections:
MALWARE_Win_DLInjector02
Create hunting rule
Link:
https://www.unpac.me/results/11698793-3ed9-4eee-a41a-c92d3c9c5656/
SH256 hash:
f3831d6ca373f539fec77e975ae4fc26451bfb3113513813819ea1111f31a81a
MD5 hash:
230ef121bcb5b8c9b91a2c35788d60ca
SHA1 hash:
476b00d10869e5931bbb799d16f563ac803b50e3
Link:
https://www.unpac.me/results/11698793-3ed9-4eee-a41a-c92d3c9c5656/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f3831d6ca373f539fec77e975ae4fc26451bfb3113513813819ea1111f31a81a

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: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:NET
Create hunting rule
Author:malware-lu
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

File information

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

Web download

AsyncRAT

Executable exe f3831d6ca373f539fec77e975ae4fc26451bfb3113513813819ea1111f31a81a

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2896832/

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
zbet commented on 2024-06-19 07:12:34 UTC

url : hxxp://77.91.77.81/lend/msa.exe