MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f81dfdc31288fffe6ff8304adaa7646ede528e8b25031d19d061ab05281e0a12. 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


Threat unknown


Vendor detections: 10


Intelligence 10 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f81dfdc31288fffe6ff8304adaa7646ede528e8b25031d19d061ab05281e0a12
SHA3-384 hash: d787cba5fefeeef3b74851dc82c45028756a5ac54c49093668a03a306cc4c051f1599a41470697729593bba3166f415a
SHA1 hash: 07ec98038cb552362fa54e6cfa683cc0809deeab
MD5 hash: 0a39a028622626809415a0c158720676
humanhash: equal-nevada-papa-delaware
File name:Mksynf.dll
Download: download sample
File size:1'094'144 bytes
First seen:2025-03-16 17:32:48 UTC
Last seen:2025-03-16 18:24:18 UTC
File type:DLL dll
MIME type:application/x-dosexec
imphash dae02f32a21e03ce65412f6e56942daa (123 x YellowCockatoo, 60 x CobaltStrike, 44 x JanelaRAT)
ssdeep 24576:DsPifUdKp7Ydl/YL7ftQvhnZlEWb4SBvrdgv:2+a27VO7Z84zd0
TLSH T10D35C006B6F68FC1DB492F75E467C0009BE0A0833563F39DA65492A73E523E6CC56BB4
TrID 86.5% (.DLL) Generic .NET DLL/Assembly (236632/4/32)
3.8% (.EXE) Win64 Executable (generic) (10522/11/4)
2.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
1.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.6% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter BastianHein
Tags:dll

Intelligence

File Origin
# of uploads :
2
# of downloads :
451
Origin country :
CL CL
Vendor Threat Intelligence
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67d7204808116ce425718a1a
Tags:
msil
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Verdict:
Malicious
Labled as:
MSILHeracles.Generic
Link:
https://www.hybrid-analysis.com/sample/f81dfdc31288fffe6ff8304adaa7646ede528e8b25031d19d061ab05281e0a12
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.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/d3f5b421-c01f-403f-b9a9-2bbd1a87616d
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/1639939
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1639939 Sample: Mksynf.dll Startdate: 16/03/2025 Architecture: WINDOWS Score: 56 15 Multi AV Scanner detection for submitted file 2->15 17 .NET source code contains method to dynamically call methods (often used by packers) 2->17 19 Joe Sandbox ML detected suspicious sample 2->19 7 loaddll32.exe 1 2->7         started        process3 process4 9 cmd.exe 1 7->9         started        11 conhost.exe 7->11         started        process5 13 rundll32.exe 9->13         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f81dfdc31288fffe6ff8304adaa7646ede528e8b25031d19d061ab05281e0a12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f81dfdc31288fffe6ff8304adaa7646ede528e8b25031d19d061ab05281e0a12/
Threat name:
Win32.Trojan.Whispergate
Create hunting rule
Status:
Malicious
First seen:
2025-03-16 17:33:12 UTC
File Type:
PE (.Net Dll)
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7ao73qysrd77437ygbfnvj3en3pffduleubr2goqmgvqkka6bija._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/250316-v4xb5awtaw/
Unpacked files
SH256 hash:
f81dfdc31288fffe6ff8304adaa7646ede528e8b25031d19d061ab05281e0a12
MD5 hash:
0a39a028622626809415a0c158720676
SHA1 hash:
07ec98038cb552362fa54e6cfa683cc0809deeab
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/9e785790-c71a-43ca-be7e-e264251759ef/
Parent samples :
df52744df9ff4bd8dfb0b6e6e86f94d1d885caba0f2deb2f8a429978b475508a
f81dfdc31288fffe6ff8304adaa7646ede528e8b25031d19d061ab05281e0a12
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/f81dfdc31288fffe6ff8304adaa7646ede528e8b25031d19d061ab05281e0a12

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:Lumma_Stealer_Detection
Create hunting rule
Author:ashizZz
Description:Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
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)

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 (HIGH_ENTROPY_VA)high

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