MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f2fa42ddcbe57d2cf7d7dec3c0461b0cbdf6d6fa2ac937cce6d4c7980befbe0d. 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


MaskGramStealer


Vendor detections: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f2fa42ddcbe57d2cf7d7dec3c0461b0cbdf6d6fa2ac937cce6d4c7980befbe0d
SHA3-384 hash: 45fcf5a2e40a3404fd2f4cc652a63c557be96a08a3a8fb379f8c4c53a1adaaca8597595a2a204678a17b77d74c6b4a2d
SHA1 hash: 1f70d81f33c1dc9f29ac599b9403ae765b5cb200
MD5 hash: 5009e707ef7ceac22ed1d505a9f6eab9
humanhash: uranus-paris-magazine-edward
File name:mscorsvc.dll
Download: download sample
Signature MaskGramStealer
Create hunting rule
File size:152'576 bytes
First seen:2025-11-23 14:48:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 889d7d9bd78af47c7881d69d79690e91 (2 x MaskGramStealer)
ssdeep 3072:/gLCKYeSxNrW/SjdLc/bag2jfvnSn41gSkCTaMBamyGuhaWHWg4R3J:iYeSvWkYbx2zqn43+aahh1fy3J
TLSH T1D9E3F1384C79E247F6ADE0F5E9680FC5FC71B0159F60626B9D7C96B023238744EA96E0
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:exe MaskGramStealer

Intelligence

File Origin
# of uploads :
1
# of downloads :
72
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
mscorsvc.dll
Verdict:
Malicious activity
Analysis date:
2025-11-23 14:47:53 UTC
Tags:
stealer
Link:
https://app.any.run/tasks/3ad1e2b5-ec70-4028-bfd3-83bbd0a2a652

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/41137/
Gathering data
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Connection attempt
Sending a custom TCP request
Behavior that indicates a threat
Connection attempt to an infection source
Query of malicious DNS domain
Sending a TCP request to an infection source
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
anti-debug hacktool masm masquerade packed
Link:
https://www.filescan.io/uploads/69231eb2eecb08e4aa45d9b1/reports/58d45da4-0247-43ad-a098-851d5de8c390/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f2fa42ddcbe57d2cf7d7dec3c0461b0cbdf6d6fa2ac937cce6d4c7980befbe0d
Result
Gathering data
Verdict:
Malicious
File Type:
dll x64
First seen:
2025-11-23T10:28:00Z UTC
Last seen:
2025-11-23T11:25:00Z UTC
Hits:
~100
Detections:
HEUR:Trojan.Multi.Donut.b HEUR:Trojan.Win32.Agentb.gen Trojan-PSW.Vidar.HTTP.C&C Trojan.Win64.DonutInjector.sb Trojan.Win64.Donut.sb Trojan.Win64.Agentb.sb Trojan.Win32.Inject.sb HEUR:Trojan.Win32.Agent.gen Trojan.Win32.Shellcode.sb PDM:Trojan.Win32.Generic MEM:Trojan.Win64.Shellcode.gen MEM:Trojan.Win64.Shellcode.a MEM:Trojan.Win64.Cometer.gen HEUR:Trojan.Win64.Donut.a
Link:
https://opentip.kaspersky.com/f2fa42ddcbe57d2cf7d7dec3c0461b0cbdf6d6fa2ac937cce6d4c7980befbe0d/results?tab=lookup
Result
Threat name:
DonutLoader, MaskGram Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1819536
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)
Found API chain indicative of debugger detection
Injects a PE file into a foreign processes
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)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Crypto Currency Wallets
Writes to foreign memory regions
Yara detected DonutLoader
Yara detected MaskGram Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1819536 Sample: mscorsvc.dll.exe Startdate: 23/11/2025 Architecture: WINDOWS Score: 100 29 easternwhiskerholdings.sbs 2->29 31 www.chess.com 2->31 33 5 other IPs or domains 2->33 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus detection for URL or domain 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 3 other signatures 2->49 8 loaddll64.exe 1 2->8         started        11 explorer.exe 58 140 2->11         started        signatures3 process4 dnsIp5 51 Found API chain indicative of debugger detection 8->51 53 Injects code into the Windows Explorer (explorer.exe) 8->53 55 Writes to foreign memory regions 8->55 63 3 other signatures 8->63 14 explorer.exe 501 7 8->14 injected 18 cmd.exe 1 8->18         started        20 conhost.exe 8->20         started        35 ax-0003.ax-msedge.net 150.171.28.12, 443, 49706 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 11->35 57 System process connects to network (likely due to code injection or exploit) 11->57 59 Query firmware table information (likely to detect VMs) 11->59 61 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 11->61 signatures6 process7 dnsIp8 37 easternwhiskerholdings.sbs 104.21.84.128, 443, 49694, 49695 CLOUDFLARENETUS United States 14->37 39 204.79.197.203, 443 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 14->39 41 2 other IPs or domains 14->41 73 System process connects to network (likely due to code injection or exploit) 14->73 75 Tries to harvest and steal browser information (history, passwords, etc) 14->75 77 Writes to foreign memory regions 14->77 79 4 other signatures 14->79 22 msedge.exe 14->22         started        24 chrome.exe 14->24         started        26 rundll32.exe 18->26         started        signatures9 process10 signatures11 65 Injects code into the Windows Explorer (explorer.exe) 26->65 67 Writes to foreign memory regions 26->67 69 Allocates memory in foreign processes 26->69 71 Creates a thread in another existing process (thread injection) 26->71
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f2fa42ddcbe57d2cf7d7dec3c0461b0cbdf6d6fa2ac937cce6d4c7980befbe0d
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/5009e707ef7ceac22ed1d505a9f6eab9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f2fa42ddcbe57d2cf7d7dec3c0461b0cbdf6d6fa2ac937cce6d4c7980befbe0d/
Verdict:
Malicious
Threat:
Family.DONUTLOADER
Link:
https://tip.neiki.dev/file/f2fa42ddcbe57d2cf7d7dec3c0461b0cbdf6d6fa2ac937cce6d4c7980befbe0d
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6l5efxol4v6sz56x33b4arq3bs67nvx2fletpthg2tdzqc7pxygq._file
Verdict:
malicious
Label(s):
donutloader
Create hunting rule
maskgramstealer
Create hunting rule
Similar samples:
error
MaskGramStealer
Result
Malware family:
donutloader
Create hunting rule
Score:
  10/10
Tags:
family:donutloader loader persistence ransomware spyware
Link:
https://tria.ge/reports/251123-r6j8sssncj/
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
Drops file in Windows directory
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/f52cc52a-84ae-4f57-a271-19187ba6130d
Unpacked files
SH256 hash:
f2fa42ddcbe57d2cf7d7dec3c0461b0cbdf6d6fa2ac937cce6d4c7980befbe0d
MD5 hash:
5009e707ef7ceac22ed1d505a9f6eab9
SHA1 hash:
1f70d81f33c1dc9f29ac599b9403ae765b5cb200
Link:
https://www.unpac.me/results/7dcdbed1-faca-4fe7-ab0e-21180c789333/
Malware family:
DonutLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f2fa42ddcbe5/report/overview.html
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: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/41137/

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