MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f3f98734dec69010e88c027fd37ee6dc9ff3d35afd200c6bc95c6ddba649eb91. 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


DonutLoader


Vendor detections: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f3f98734dec69010e88c027fd37ee6dc9ff3d35afd200c6bc95c6ddba649eb91
SHA3-384 hash: 95a5988e18b72b1089424c124b57cc702b62a4d76a5383af4ed81248663e0a8c262e40282388ec0c5bcbd402c18e109e
SHA1 hash: 5c1151a97957392ded9d737defff98e0f6919d9a
MD5 hash: 1e6c0d5464b0c0b0ea1d0741e050cc12
humanhash: carolina-missouri-hotel-queen
File name:nKZsLGUM.bat
Download: download sample
Signature DonutLoader
Create hunting rule
File size:776 bytes
First seen:2025-09-04 07:52:41 UTC
Last seen:2025-09-04 08:23:28 UTC
File type:Batch (bat) bat
MIME type:text/x-msdos-batch
ssdeep 12:XMlPTl98XI1k3C9dcdD8J8ZSVRvmcP2zZ8uU20W+zCYvGPqJiZCY5waIS1xy0fmv:clJWGJJ8MVRvmk2Cr2V8G38C1xNmv
Threatray 344 similar samples on MalwareBazaar
TLSH T1C201206D16BD91A605C0B7E3C1776440C2150D7E1165EBEB238BC35DA3F08D0A05D696
Magika batch
Reporter lowmal3
Tags:bat donutloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
47
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
nKZsLGUM.bat
Verdict:
Malicious activity
Analysis date:
2025-09-04 07:55:57 UTC
Tags:
auto-reg auto-startup remote xworm
Link:
https://app.any.run/tasks/5b07f865-7c82-4fdd-827b-ba624d7c8895

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/25002/
Detection(s):
SecuriteInfo.com.Heur.BZC.PZQ.Boxter.922.1670A257.3827.15526.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Heur.BZC.PZQ.Boxter.922.13D0FE26.6400.12512.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68b94a41eb163e0ec1844da9
Tags:
emotet xtreme shell sage
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Launching a process
Creating a file
Downloading the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/68b945bb6212e2f74268f8ed/reports/81be8164-0522-4490-9443-71a207cfe864/overview
Verdict:
Malicious
Labled as:
BZC.PZQ.Boxter.922
Link:
https://www.hybrid-analysis.com/sample/f3f98734dec69010e88c027fd37ee6dc9ff3d35afd200c6bc95c6ddba649eb91
Verdict:
Malicious
File Type:
unix shell
First seen:
2025-09-03T23:11:00Z UTC
Last seen:
2025-09-03T23:11:00Z UTC
Hits:
~1000
Detections:
Backdoor.Win32.Androm Backdoor.MSIL.Cardinal.sb Trojan.BAT.Agent.sb HEUR:Trojan.Script.Generic HEUR:Trojan.MSIL.Rozena.gen Trojan.Win32.Agent.sb HEUR:Trojan-Downloader.Script.Generic PDM:Trojan.Win32.Generic HEUR:Trojan.BAT.Agent.gen Backdoor.Agent.TCP.C&C Trojan-Dropper.Win32.Injector.sb Trojan.Win32.Shellcode.sb
Link:
https://opentip.kaspersky.com/f3f98734dec69010e88c027fd37ee6dc9ff3d35afd200c6bc95c6ddba649eb91/results?tab=lookup
Result
Threat name:
VioletWorm, XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1770945
Signature
.NET source code contains potential unpacker
.NET source code contains suspicious base64 encoded strings
.NET source code contains very large strings
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Drops VBS files to the startup folder
Encrypted powershell cmdline option found
Found malware configuration
Injects code into the Windows Explorer (explorer.exe)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Query firmware table information (likely to detect VMs)
Sample uses string decryption to hide its real strings
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Drops script at startup location
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded IEX Cmdlet
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Yara detected Process Injector
Yara detected VioletWorm
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1770945 Sample: nKZsLGUM.bat Startdate: 04/09/2025 Architecture: WINDOWS Score: 100 54 ax-0003.ax-msedge.net 2->54 56 api.robquiz.com 2->56 58 3 other IPs or domains 2->58 74 Found malware configuration 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 Multi AV Scanner detection for submitted file 2->78 80 17 other signatures 2->80 12 cmd.exe 1 2->12         started        15 explorer.exe 80 127 2->15         started        signatures3 process4 dnsIp5 94 Suspicious powershell command line found 12->94 96 Wscript starts Powershell (via cmd or directly) 12->96 18 powershell.exe 24 22 12->18         started        22 conhost.exe 12->22         started        24 timeout.exe 1 12->24         started        64 ax-0003.ax-msedge.net 150.171.27.12, 443, 49697 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 15->64 98 System process connects to network (likely due to code injection or exploit) 15->98 100 Query firmware table information (likely to detect VMs) 15->100 signatures6 process7 dnsIp8 60 api.robquiz.com 198.54.121.118, 443, 49693 NAMECHEAP-NETUS United States 18->60 82 Injects code into the Windows Explorer (explorer.exe) 18->82 84 Writes to foreign memory regions 18->84 86 Creates a thread in another existing process (thread injection) 18->86 26 explorer.exe 17 6 18->26 injected 31 csc.exe 3 18->31         started        signatures9 process10 dnsIp11 62 91.219.237.195, 49694, 6339 SERVERASTRA-ASHU Hungary 26->62 50 C:\Users\user\...\AudioSvcMangment.vbs, ASCII 26->50 dropped 102 System process connects to network (likely due to code injection or exploit) 26->102 104 Drops VBS files to the startup folder 26->104 33 wscript.exe 1 26->33         started        52 C:\Users\user\AppData\Local\...\iqpasoqn.dll, PE32 31->52 dropped 36 cvtres.exe 1 31->36         started        file12 signatures13 process14 signatures15 66 Suspicious powershell command line found 33->66 68 Wscript starts Powershell (via cmd or directly) 33->68 70 Encrypted powershell cmdline option found 33->70 72 3 other signatures 33->72 38 powershell.exe 23 33->38         started        process16 signatures17 88 Injects code into the Windows Explorer (explorer.exe) 38->88 90 Writes to foreign memory regions 38->90 92 Creates a thread in another existing process (thread injection) 38->92 41 csc.exe 3 38->41         started        44 conhost.exe 38->44         started        process18 file19 48 C:\Users\user\AppData\Local\...\4nbqienw.dll, PE32 41->48 dropped 46 cvtres.exe 1 41->46         started        process20
Score:
94%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/f3f98734dec69010e88c027fd37ee6dc9ff3d35afd200c6bc95c6ddba649eb91
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f3f98734dec69010e88c027fd37ee6dc9ff3d35afd200c6bc95c6ddba649eb91/
Verdict:
Malicious
Threat:
Family.DONUTLOADER
Link:
https://tip.neiki.dev/file/f3f98734dec69010e88c027fd37ee6dc9ff3d35afd200c6bc95c6ddba649eb91
Threat name:
Script-BAT.Downloader.DonutLoader
Create hunting rule
Status:
Malicious
First seen:
2025-09-04 06:50:26 UTC
File Type:
Text (Batch)
AV detection:
9 of 24 (37.50%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6p4yong6y2ibb2emaj75g7xg3sp7hu227uqay26jlrw5xjsj5oiq._file
Verdict:
malicious
Label(s):
donut_injector
Create hunting rule
Similar samples:
1cc62d774236839a8067b217ed9844b475d78eca9b27c5f6419ad1ffa35b9d64
DonutLoader
4bce5c43d01102b83bf0cb0b85d09ea8a758262b98b04aeccff957aad024f7bd
DonutLoader
65039817a944e3adf00f0111c57c11f659b32ed8938a96a9fe533eabbf039559
DonutLoader
a2f4d6c6eb8eed62a39b756f2bc1a96d2c4a563d5d9026e12f464f85e314b261
DonutLoader
b2ca99555886133450668ed69366ffcabb9860cd5fba4340b2c1dcf7d365cfca
DonutLoader
ca9e57426ab9e6e2ef4d9b50fa9b468d775f26812828a444ae112003f1e3dc80
DonutLoader
e36eee6a572b2c5e45cfaffae49ee361f55915375a4b7c938983fe8f8b5aa539
DonutLoader
error
DonutLoader
f58c71a74d72d71ebfef10ae4020dd1a0ce310ebc0c2ad44acb5f186d2e006ce
DonutLoader
+ 334 additional samples on MalwareBazaar
Result
Malware family:
donutloader
Create hunting rule
Score:
  10/10
Tags:
family:donutloader adware defense_evasion execution loader persistence spyware
Link:
https://tria.ge/reports/250904-jr1cgacj8s/
Behaviour
Checks SCSI registry key(s)
Delays execution with timeout.exe
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Adds Run key to start application
Enumerates connected drives
Checks computer location settings
Drops startup file
Badlisted process makes network request
Boot or Logon Autostart Execution: Active Setup
Command and Scripting Interpreter: PowerShell
Detects DonutLoader
DonutLoader
Donutloader family
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/f3f98734dec69010e88c027fd37ee6dc9ff3d35afd200c6bc95c6ddba649eb91

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:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

File information

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

Malspam

DonutLoader

Batch (bat) bat f3f98734dec69010e88c027fd37ee6dc9ff3d35afd200c6bc95c6ddba649eb91

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/25002/

Comments