MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5731d0fec3b864f35d7711803d93db4b80cde7a52bc81d89053ad11c0ac9f10c. 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: 17


Intelligence 17 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5731d0fec3b864f35d7711803d93db4b80cde7a52bc81d89053ad11c0ac9f10c
SHA3-384 hash: 2feee8c0a71c19e38ee70121282ed64faf503fdcc146020884b26db2231ebc607bb4d374317574618dcebfe022accd05
SHA1 hash: 5f3ffd893eab616fe7396e5bd73de27284781e16
MD5 hash: b906c5eb758c80b7a9519ee1670c0252
humanhash: one-maryland-leopard-social
File name:mscorsvc.dll
Download: download sample
Signature DonutLoader
Create hunting rule
File size:217'600 bytes
First seen:2025-12-18 12:33:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 889d7d9bd78af47c7881d69d79690e91 (3 x MaskGramStealer, 2 x DonutLoader)
ssdeep 6144:k2Nwu23v7eDkEZICLtPjYOdCVtXQ0jvIQhgHK0Jb7j3S2a:k2NwuYRL6xjYO87xvIioN3La
TLSH T18A24F12E5E7AEA8EF1EDACB5D4001F01A850B68C8D55C3E7CEB9D57067778400F29AD1
TrID 38.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
15.6% (.ICL) Windows Icons Library (generic) (2059/9)
15.4% (.EXE) OS/2 Executable (generic) (2029/13)
15.2% (.EXE) Generic Win/DOS Executable (2002/3)
15.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter burger
Tags:donutloader exe vidar

Intelligence

File Origin
# of uploads :
1
# of downloads :
126
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Malware family:
vidar
Create hunting rule
ID:
1
File name:
mscorsvc.dll
Verdict:
Malicious activity
Analysis date:
2025-12-18 12:31:30 UTC
Tags:
telegram vidar
Link:
https://app.any.run/tasks/f0b12ae4-6476-477d-aff8-c516f9c584a0

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/45428/
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6943f4ccc97f4a807a3ba444
Tags:
emotet virus remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Connection attempt
Sending a custom TCP request
Behavior that indicates a threat
Sending an HTTP GET request
Launching the default Windows debugger (dwwin.exe)
Launching a process
Searching for the window
Creating a window
Сreating synchronization primitives
Searching for synchronization primitives
Launching a service
Changing a file
Query of malicious DNS domain
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
anti-debug hacktool krypt masm masquerade packed
Link:
https://www.filescan.io/uploads/6943f4cae126b9ff4386e7dc/reports/fcb2af84-fd14-44b9-9871-b55c9f37eace/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/5731d0fec3b864f35d7711803d93db4b80cde7a52bc81d89053ad11c0ac9f10c
Verdict:
Malicious
File Type:
dll x64
First seen:
2025-12-18T09:40:00Z UTC
Last seen:
2025-12-19T02:55:00Z UTC
Hits:
~100
Detections:
HEUR:Trojan.Win32.Agentb.gen HEUR:Trojan.Win32.Agent.gen MEM:Trojan.Win64.Shellcode.a HEUR:Trojan.Win64.Donut.a Trojan-PSW.Vidar.HTTP.C&C Trojan.Win32.Inject.sb MEM:Trojan.Win64.Shellcode.gen MEM:Trojan.Win64.Cometer.gen HEUR:Trojan.Multi.Donut.b Trojan.Win64.DonutInjector.sb Trojan.Win64.Donut.sb Trojan.Win64.Agentb.sb Trojan.Win32.Shellcode.sb PDM:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/5731d0fec3b864f35d7711803d93db4b80cde7a52bc81d89053ad11c0ac9f10c/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/fccdcd9f-5274-4a65-860c-bf8146a24161
Result
Threat name:
DonutLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1835640
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Creates a thread in another existing process (thread injection)
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)
System process connects to network (likely due to code injection or exploit)
Unusual module load detection (module proxying)
Writes to foreign memory regions
Yara detected DonutLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1835640 Sample: mscorsvc.dll.exe Startdate: 18/12/2025 Architecture: WINDOWS Score: 100 33 sleepyfur2017.top 2->33 35 hazystripe2004.shop 2->35 37 13 other IPs or domains 2->37 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for URL or domain 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 2 other signatures 2->51 8 loaddll64.exe 1 2->8         started        11 explorer.exe 49 138 2->11         started        signatures3 process4 dnsIp5 61 Injects code into the Windows Explorer (explorer.exe) 8->61 63 Writes to foreign memory regions 8->63 65 Allocates memory in foreign processes 8->65 71 2 other signatures 8->71 14 cmd.exe 1 8->14         started        16 explorer.exe 8 6 8->16 injected 20 conhost.exe 8->20         started        39 ax-0003.ax-msedge.net 150.171.28.12, 443, 49741 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 11->39 67 System process connects to network (likely due to code injection or exploit) 11->67 69 Query firmware table information (likely to detect VMs) 11->69 signatures6 process7 dnsIp8 22 rundll32.exe 14->22         started        27 t.me 149.154.167.99, 443, 49738, 49739 TELEGRAMRU United Kingdom 16->27 29 atc.spotify.map.fastly.net 151.101.3.42, 443, 49737 FASTLYUS United States 16->29 31 2 other IPs or domains 16->31 41 System process connects to network (likely due to code injection or exploit) 16->41 43 Unusual module load detection (module proxying) 16->43 25 WerFault.exe 21 16->25         started        signatures9 process10 signatures11 53 Injects code into the Windows Explorer (explorer.exe) 22->53 55 Writes to foreign memory regions 22->55 57 Allocates memory in foreign processes 22->57 59 Creates a thread in another existing process (thread injection) 22->59
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/5731d0fec3b864f35d7711803d93db4b80cde7a52bc81d89053ad11c0ac9f10c
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/b906c5eb758c80b7a9519ee1670c0252
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5731d0fec3b864f35d7711803d93db4b80cde7a52bc81d89053ad11c0ac9f10c/
Verdict:
Malicious
Threat:
Trojan.Win64.Shellcode
Link:
https://tip.neiki.dev/file/5731d0fec3b864f35d7711803d93db4b80cde7a52bc81d89053ad11c0ac9f10c
Threat name:
Win64.Trojan.Donut
Create hunting rule
Status:
Malicious
First seen:
2025-12-18 12:34:21 UTC
File Type:
PE+ (Dll)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=k4y5b7wdxbspgxlxcgad3e63joam3z5ffpeb3cifhlirycwj6ega._file
Verdict:
malicious
Label(s):
donutloader
Create hunting rule
Similar samples:
error
DonutLoader
Result
Malware family:
donutloader
Create hunting rule
Score:
  10/10
Tags:
family:donutloader discovery loader persistence ransomware spyware
Link:
https://tria.ge/reports/251223-pz7z6syrdy/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Enumerates system info in registry
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
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
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
System Time Discovery
Accesses cryptocurrency files/wallets, possible credential harvesting
Enumerates connected drives
Boot or Logon Autostart Execution: Active Setup
Detects DonutLoader
DonutLoader
Donutloader family
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/93f3ecfe-cc13-4eb2-9b44-7830a3a68b20
Unpacked files
SH256 hash:
5731d0fec3b864f35d7711803d93db4b80cde7a52bc81d89053ad11c0ac9f10c
MD5 hash:
b906c5eb758c80b7a9519ee1670c0252
SHA1 hash:
5f3ffd893eab616fe7396e5bd73de27284781e16
Link:
https://www.unpac.me/results/68874da5-5631-4973-8fd4-fb12ade1558c/
Malware family:
DonutLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/5731d0fec3b8/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/5731d0fec3b864f35d7711803d93db4b80cde7a52bc81d89053ad11c0ac9f10c

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:Check_Debugger
Create hunting rule
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/45428/

Comments