MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf. 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: 16


Intelligence 16 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf
SHA3-384 hash: 9025e2718da0a1a466c3be3f2e13a776307b628992511ecbe5b94623ece9a66a8116aebdfa28de978ac126480984679e
SHA1 hash: 0a8f9bb8e9058beb4bd67ea08b8ef82bc90fcd8c
MD5 hash: 4a5f7263d5e978024e4d3c7abed82307
humanhash: one-uniform-snake-glucose
File name:DRAFT BL - HUMPERT-WH (SO#5649) 521 (BL TELEX RELEASE).scr
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:573'440 bytes
First seen:2024-05-21 01:14:17 UTC
Last seen:2024-05-21 02:28:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:IzxKn6yWn7fcpVZlu/6uHqa9XnWsh9P5u7JwdprNLUgNYGutA:rn698VVYFlRu7J6ZUgNiA
Threatray 937 similar samples on MalwareBazaar
TLSH T1C9C42212BBE04F1AC0270B7A7DE8412203F76B5B6962F7501ECE64EB1D27B904455E6F
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon f0ccece8e0e8ccf0 (2 x AgentTesla, 1 x RemcosRAT, 1 x AsyncRAT)
Reporter threatcat_ch
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
322
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe
Verdict:
Malicious activity
Analysis date:
2024-05-21 01:17:05 UTC
Tags:
remote xworm
Link:
https://app.any.run/tasks/d56960c5-a8b9-42cb-81f7-310ee772b842

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.16223.5320.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Tags:
Banker Encryption Execution Stealth Msil Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Setting a global event handler for the keyboard
Creating a file in the mass storage device
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/664bf59981ea6b1eef490bf5/reports/5c2ec9b3-044a-4a5a-9960-abd9b21e273c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7ce0a4c7-0b00-4600-82f9-96d5ea2712ed
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1444649
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
Antivirus detection for URL or domain
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 dnsIp2 2 Behavior Graph ID: 1444649 Sample: DRAFT BL - HUMPERT-WH (SO#5... Startdate: 21/05/2024 Architecture: WINDOWS Score: 100 36 15.164.165.52.in-addr.arpa 2->36 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 18 other signatures 2->48 9 DRAFT BL - HUMPERT-WH (SO#5649) 521 (BL TELEX RELEASE).scr.exe 3 2->9         started        signatures3 process4 signatures5 50 Injects a PE file into a foreign processes 9->50 12 DRAFT BL - HUMPERT-WH (SO#5649) 521 (BL TELEX RELEASE).scr.exe 6 9->12         started        process6 dnsIp7 38 104.250.180.178, 49717, 7061 M247GB United States 12->38 34 C:\Users\user\AppData\Roaming\XClient.exe, PE32 12->34 dropped 52 Adds a directory exclusion to Windows Defender 12->52 17 powershell.exe 23 12->17         started        20 powershell.exe 22 12->20         started        22 powershell.exe 23 12->22         started        24 powershell.exe 23 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/4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2024-05-21 01:15:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=j62i5d6vjr63ufbcjcotgexfyc66b6he2n2rapbicycagysk7k7q._file
Verdict:
malicious
Similar samples:
1ea45894bbfc448142256e5eec21349889852f550b4ed53f0aca814a6c642335
AsyncRAT
4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf
AsyncRAT
6dd41bfc65feff17a243f97340729b3472f519c1029127c5e9fee03bafcde338
AsyncRAT
6f4fbb8059780db756519fae97b7f00148f1df2b96ddaf9752d9409d45c1a37e
AsyncRAT
8d8533278822162961e4bc205ed8e8ca33254c6653ce90bf22f8f25580d72ab1
AsyncRAT
c25d781622e9ddef33c0c90d29dbc0ca53e48e3384417aedb0b6dcdf27ba53e4
AsyncRAT
c39365657b596c0e0d5599d177ec383659d23d24d1e529fcf2eeef2c8f82e5f0
AsyncRAT
+ 927 additional samples on MalwareBazaar
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm execution rat trojan
Link:
https://tria.ge/reports/240521-bl84esdd24/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Drops startup file
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Detect Xworm Payload
Xworm
Malware Config
C2 Extraction:
104.250.180.178:7061
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/32fa53e1-c234-488c-92e5-3e46f1e8ad64/
Parent samples :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 hash:
a13c3bdf634477fa29c8364adb717f0c3b08967f2ef94d3aac36736231026a1a
MD5 hash:
2bafe3a29094a33403b83b3dbe7369f8
SHA1 hash:
ebeff033d50a05a1e401cf7bf9309ad392e5b3cd
Link:
https://www.unpac.me/results/32fa53e1-c234-488c-92e5-3e46f1e8ad64/
SH256 hash:
f540e8d603962027b3a1f8b86d035281bfbdd3a05a621ead255825bc2082632a
MD5 hash:
d172f59251b97b415b621d302e1be2b7
SHA1 hash:
b1534e603749c901b5ac185f20e281f6be7fa908
Link:
https://www.unpac.me/results/32fa53e1-c234-488c-92e5-3e46f1e8ad64/
SH256 hash:
434452bff979e9dbb9dcad8d6b1df1ed7e09262ca491fae725aff1f5aa5d3721
MD5 hash:
bede35dbdbba1d0dca629abe5d715618
SHA1 hash:
4c512b8fe40b3f67863bad4e904dbb1849d6eb50
Link:
https://www.unpac.me/results/32fa53e1-c234-488c-92e5-3e46f1e8ad64/
SH256 hash:
4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf
MD5 hash:
4a5f7263d5e978024e4d3c7abed82307
SHA1 hash:
0a8f9bb8e9058beb4bd67ea08b8ef82bc90fcd8c
Link:
https://www.unpac.me/results/32fa53e1-c234-488c-92e5-3e46f1e8ad64/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4fb48e8fd54c/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/4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf

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: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 4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf

(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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