MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a3a25ec628702692e852048f22f3254bf976b8e71b0a71a7d789de8313ac349. 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: 13


Intelligence 13 IOCs YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a3a25ec628702692e852048f22f3254bf976b8e71b0a71a7d789de8313ac349
SHA3-384 hash: b519e74ab080bc0246484a3eb7c7a0417b40572b56f4f6f9ccd164cceb27a468ecd0f7b025fa5bd5035bd37c01f70070
SHA1 hash: 0b8cdaf89419175b462144404feb513657d1c728
MD5 hash: 81d18e9a342730023cf9c8f4fb752487
humanhash: earth-leopard-pluto-washington
File name:MSDS-001_VRLA電池SDS(UN2800)_英文_2024.06.18. - 此筆核單尚未收到再麻煩您pdf.scr
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:458'752 bytes
First seen:2024-06-17 05:12:14 UTC
Last seen:2024-06-17 06:56:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:60/iFIsPAb/z/WREG/zQ/VdQFLQquvUMpkOo0xBXelvB7K/:HkIKybVG/gV6lx1yxcA
TLSH T1AAA412047AE81763CAF647BA69298558D2BB7B012023EBCD5C8635DF4CD5F80A713B87
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter threatcat_ch
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
4
# of downloads :
370
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4a3a25ec628702692e852048f22f3254bf976b8e71b0a71a7d789de8313ac349.exe
Verdict:
Malicious activity
Analysis date:
2024-06-17 05:13:23 UTC
Tags:
xworm remote
Link:
https://app.any.run/tasks/3c9ce393-c820-44ac-9081-29edb42bc9e6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.15594.23568.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=666fdf1f0f8138dd4eaad72dwin7simulatehigh_evasion
Tags:
Banker Encryption Execution Generic Stealth Msil Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4a3a25ec628702692e852048f22f3254bf976b8e71b0a71a7d789de8313ac349
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/f366b32e-c967-4b37-a9f6-10ca27b08d4b
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1458164
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
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
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted 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: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
Yara detected AntiVM3
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1458164 Sample: 8pdf.scr.exe Startdate: 17/06/2024 Architecture: WINDOWS Score: 100 42 Snort IDS alert for network traffic 2->42 44 Multi AV Scanner detection for domain / URL 2->44 46 Found malware configuration 2->46 48 16 other signatures 2->48 8 8pdf.scr.exe 3 2->8         started        process3 file4 34 C:\Users\user\AppData\...\8pdf.scr.exe.log, ASCII 8->34 dropped 50 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 8->50 52 Bypasses PowerShell execution policy 8->52 54 Adds a directory exclusion to Windows Defender 8->54 56 Injects a PE file into a foreign processes 8->56 12 8pdf.scr.exe 6 8->12         started        signatures5 process6 dnsIp7 38 104.250.180.178, 49742, 7061 M247GB United States 12->38 36 C:\Users\user\AppData\Roaming\XClient.exe, PE32 12->36 dropped 58 Adds a directory exclusion to Windows Defender 12->58 17 powershell.exe 23 12->17         started        20 powershell.exe 23 12->20         started        22 powershell.exe 23 12->22         started        24 powershell.exe 12->24         started        file8 signatures9 process10 signatures11 40 Loading BitLocker PowerShell Module 17->40 26 conhost.exe 17->26         started        28 conhost.exe 20->28         started        30 conhost.exe 22->30         started        32 conhost.exe 24->32         started        process12
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4a3a25ec628702692e852048f22f3254bf976b8e71b0a71a7d789de8313ac349
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a3a25ec628702692e852048f22f3254bf976b8e71b0a71a7d789de8313ac349/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2024-06-17 04:08:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
25 of 37 (67.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ji5cl3dcq4bgslufebepelzsks7zo24oogykogt5pco6qmj2yneq._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/240617-fwed1szenm/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Unpacked files
SH256 hash:
94c1b83e9181e597748af34aa30324fa001324bd12d33b12aa01e2a05ba779d6
MD5 hash:
090b76b0c6152ea71f08d1e9ae8f3742
SHA1 hash:
ff5ca08e6d69cb68a76422e804b0574d551ed20e
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/a1dbcb5b-9d60-43d2-ab27-0c1bdedd5d41/
Parent samples :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 hash:
08535713447f65bc81663aa80a80a23a8ed3460c17df3a33bb586f1b286f6936
MD5 hash:
a58c38227ba100c6a336592f2c49dadf
SHA1 hash:
ebb9b3f249a63f7e67eb86e8990755414ba9f464
Link:
https://www.unpac.me/results/a1dbcb5b-9d60-43d2-ab27-0c1bdedd5d41/
SH256 hash:
c4b12039bfed4c8bbb9d1376004da60480e49a379a84c9e60565bbd5caef07b2
MD5 hash:
144f7fcaaa3b81b0a3706203a7f1add8
SHA1 hash:
4bc14913fd448b4a2664e1e9ba664a1c6e9a9194
Link:
https://www.unpac.me/results/a1dbcb5b-9d60-43d2-ab27-0c1bdedd5d41/
SH256 hash:
ecf1257cb2839319c722daf5323ba2ed7060368b46f84610b6b6823323297826
MD5 hash:
cba51dcdec84ac14ce1eaf2ede86f28b
SHA1 hash:
2e77e64525600817d96b4d9c497135c989e608ee
Link:
https://www.unpac.me/results/a1dbcb5b-9d60-43d2-ab27-0c1bdedd5d41/
SH256 hash:
4a3a25ec628702692e852048f22f3254bf976b8e71b0a71a7d789de8313ac349
MD5 hash:
81d18e9a342730023cf9c8f4fb752487
SHA1 hash:
0b8cdaf89419175b462144404feb513657d1c728
Link:
https://www.unpac.me/results/a1dbcb5b-9d60-43d2-ab27-0c1bdedd5d41/
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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:NET
Create hunting rule
Author:malware-lu
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

File information

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

Malspam

AsyncRAT

Executable exe 4a3a25ec628702692e852048f22f3254bf976b8e71b0a71a7d789de8313ac349

(this sample)

  
Delivery method
Distributed via e-mail attachment

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

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