MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bbbceb4adf8900e5df33d28d9bac03afe37cff41166e475ae42166949006610a. 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 6 File information Comments
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SHA256 hash: bbbceb4adf8900e5df33d28d9bac03afe37cff41166e475ae42166949006610a
SHA3-384 hash: 73c1133f6e01d55a5cb725affe909a490d6314433c438c58121372c687740c9e2568acc865f0322a85d537a0799a64dc
SHA1 hash: ee036c2ce6f1a18a6ae6a35f6c11c014ebacec74
MD5 hash: 66c48b67691a79f7d7ba957dac4b98ff
humanhash: beryllium-cola-fillet-skylark
File name:stub.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:11'531'171 bytes
First seen:2025-05-09 23:34:38 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 965e162fe6366ee377aa9bc80bdd5c65 (44 x BlankGrabber, 9 x Efimer, 7 x PythonStealer)
ssdeep 196608:p0kVuovSQ24iMqWNo2mtKVzurH2P/XRL2aPF2wKmF:ZVuiSQ2JtWNhqKVzuYXAaPv
TLSH T100C633385BA841F7F6F5DB39E84198A6C36BBE121B52C28383E9907A1D336C09D37751
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
dhash icon 70d8cacabedafa3c (1 x LummaStealer, 1 x AsyncRAT)
Reporter FeeDataExceptio
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
536
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
stub.exe
Verdict:
Malicious activity
Analysis date:
2025-05-09 18:28:06 UTC
Tags:
python evasion
Link:
https://app.any.run/tasks/b99d84df-fcdb-4d7d-a36d-ec42ca823bea

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Python.Packed.104.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=681e92254a59e5a2ce037b86
Tags:
installer shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Restart of the analyzed sample
Creating a window
Searching for the window
Creating a file
Running batch commands
Creating a process with a hidden window
Creating a process from a recently created file
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file in the %AppData% directory
Launching a process
Enabling the 'hidden' option for recently created files
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
expand lolbin microsoft_visual_cc overlay overlay packed packed packer_detected
Link:
https://www.filescan.io/uploads/681e912cbab2591d065567f1/reports/da987fc9-c8fa-44c8-8cd3-7ea4702b6f21/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/bbbceb4adf8900e5df33d28d9bac03afe37cff41166e475ae42166949006610a
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/8bc56218-4609-4880-b491-21a1345d992d
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1686262
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 detection for dropped file
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Found pyInstaller with non standard icon
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Protects its processes via BreakOnTermination flag
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
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1686262 Sample: stub.exe Startdate: 10/05/2025 Architecture: WINDOWS Score: 100 70 dudn.xyz 2->70 72 ip-api.com 2->72 82 Found malware configuration 2->82 84 Malicious sample detected (through community Yara rule) 2->84 86 Antivirus detection for dropped file 2->86 90 18 other signatures 2->90 11 stub.exe 70 2->11         started        15 JavaRuntime.exe 2->15         started        17 JavaRuntime.exe 2->17         started        19 JavaRuntime.exe 2->19         started        signatures3 88 Performs DNS queries to domains with low reputation 70->88 process4 file5 60 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 11->60 dropped 62 C:\Users\user\AppData\Local\...\ucrtbase.dll, PE32+ 11->62 dropped 64 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 11->64 dropped 66 52 other malicious files 11->66 dropped 100 Adds a directory exclusion to Windows Defender 11->100 102 Found pyInstaller with non standard icon 11->102 21 stub.exe 1 11->21         started        104 Multi AV Scanner detection for dropped file 15->104 signatures6 process7 file8 58 C:\Users\user\AppData\...\Runtime Broker.exe, PE32 21->58 dropped 92 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 21->92 94 Adds a directory exclusion to Windows Defender 21->94 25 cmd.exe 1 21->25         started        27 powershell.exe 23 21->27         started        signatures9 process10 signatures11 30 Runtime Broker.exe 15 6 25->30         started        35 conhost.exe 25->35         started        98 Loading BitLocker PowerShell Module 27->98 37 conhost.exe 27->37         started        process12 dnsIp13 74 dudn.xyz 45.201.0.219, 1000, 49728 IKGUL-26484US Seychelles 30->74 76 ip-api.com 208.95.112.1, 49720, 80 TUT-ASUS United States 30->76 68 C:\Users\user\AppData\...\JavaRuntime.exe, PE32 30->68 dropped 78 Protects its processes via BreakOnTermination flag 30->78 80 Adds a directory exclusion to Windows Defender 30->80 39 powershell.exe 23 30->39         started        42 powershell.exe 30->42         started        44 powershell.exe 30->44         started        46 2 other processes 30->46 file14 signatures15 process16 signatures17 96 Loading BitLocker PowerShell Module 39->96 48 conhost.exe 39->48         started        50 conhost.exe 42->50         started        52 conhost.exe 44->52         started        54 conhost.exe 46->54         started        56 conhost.exe 46->56         started        process18
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/bbbceb4adf8900e5df33d28d9bac03afe37cff41166e475ae42166949006610a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bbbceb4adf8900e5df33d28d9bac03afe37cff41166e475ae42166949006610a/
Threat name:
ByteCode-MSIL.Infostealer.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-05-09 23:35:13 UTC
File Type:
PE+ (Exe)
Extracted files:
541
AV detection:
10 of 37 (27.03%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xo6owsw7reaolxzt2kgzxladv7rxz72bczxeowxeeftjjeagmefa._file
Verdict:
malicious
Label(s):
xworm
Create hunting rule
Similar samples:
error
AsyncRAT
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm execution persistence pyinstaller rat trojan
Link:
https://tria.ge/reports/250509-3k229s1sdv/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Detect Xworm Payload
Xworm
Xworm family
Malware Config
C2 Extraction:
dudn.xyz:1000
Verdict:
Malicious
Tags:
external_ip_lookup
YARA:
n/a
Link:
https://app.threat.zone/submission/f188f996-4181-439a-abda-800d8452d031
Unpacked files
SH256 hash:
bbbceb4adf8900e5df33d28d9bac03afe37cff41166e475ae42166949006610a
MD5 hash:
66c48b67691a79f7d7ba957dac4b98ff
SHA1 hash:
ee036c2ce6f1a18a6ae6a35f6c11c014ebacec74
Link:
https://www.unpac.me/results/bf906f6a-7e4c-453c-bb7b-109c218f3671/
SH256 hash:
052ad6a20d375957e82aa6a3c441ea548d89be0981516ca7eb306e063d5027f4
MD5 hash:
32da96115c9d783a0769312c0482a62d
SHA1 hash:
2ea840a5faa87a2fe8d7e5cb4367f2418077d66b
Link:
https://www.unpac.me/results/bf906f6a-7e4c-453c-bb7b-109c218f3671/
SH256 hash:
c04daeba7e7c4b711d33993ab4c51a2e087f98f4211aea0dcb3a216656ba0ab7
MD5 hash:
3b337c2d41069b0a1e43e30f891c3813
SHA1 hash:
ebee2827b5cb153cbbb51c9718da1549fa80fc5c
Link:
https://www.unpac.me/results/bf906f6a-7e4c-453c-bb7b-109c218f3671/
SH256 hash:
ccfffddcd3defb8d899026298af9af43bc186130f8483d77e97c93233d5f27d7
MD5 hash:
ae5b2e9a3410839b31938f24b6fc5cd8
SHA1 hash:
9f9a14efc15c904f408a0d364d55a144427e4949
Link:
https://www.unpac.me/results/bf906f6a-7e4c-453c-bb7b-109c218f3671/
SH256 hash:
eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
MD5 hash:
0f8e4992ca92baaf54cc0b43aaccce21
SHA1 hash:
c7300975df267b1d6adcbac0ac93fd7b1ab49bd2
Link:
https://www.unpac.me/results/bf906f6a-7e4c-453c-bb7b-109c218f3671/
SH256 hash:
fdd54b6c495e9278e73d68203fff0c300e416e704852908cf5b06666cffead51
MD5 hash:
d6dfb6a9518a57e180980f7a07098d7d
SHA1 hash:
6026120461f5cbcd9255670b6a906fd8f5329073
Link:
https://www.unpac.me/results/bf906f6a-7e4c-453c-bb7b-109c218f3671/
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bbbceb4adf89/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/bbbceb4adf8900e5df33d28d9bac03afe37cff41166e475ae42166949006610a

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:PyInstaller
Create hunting rule
Author:@bartblaze
Description:Identifies executable converted using PyInstaller. This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:upxHook
Create hunting rule
Author:@r3dbU7z
Description:Detect artifacts from 'upxHook' - modification of UPX packer
Reference:https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/

File information

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

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 (FORCE_INTEGRITY)high
CHECK_TRUST_INFORequires Elevated Execution (level:requireAdministrator)high
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::ConvertSidToStringSidW
ADVAPI32.dll::ConvertStringSecurityDescriptorToSecurityDescriptorW
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::GetTokenInformation
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDriveTypeW
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineW
KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetConsoleCtrlHandler
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::FindFirstFileW
KERNEL32.dll::RemoveDirectoryW
KERNEL32.dll::SetDllDirectoryW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

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