MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 900af3c79e54bdabcb7d1764a81658fa96af772c1da57d8a3c5326e874cf8232. 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


Worm.Mofksys


Vendor detections: 11


Intelligence 11 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 900af3c79e54bdabcb7d1764a81658fa96af772c1da57d8a3c5326e874cf8232
SHA3-384 hash: 63bbce137645d45fdd098023bdb62771eade35520e3ad1d6821ae0915df0a8c7a4cdffcb38eb74d0b6f91038624bf1fe
SHA1 hash: 6580e6db54bb474198c1f824974a05870c7b86a1
MD5 hash: 2a06bca81303b0a9368b9e253a262d6a
humanhash: king-tango-crazy-oxygen
File name:svchost.exe
Download: download sample
Signature Worm.Mofksys
Create hunting rule
File size:211'787 bytes
First seen:2025-11-23 09:26:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 98f67c550a7da65513e63ffd998f6b2e (60 x Worm.Mofksys, 21 x SnakeKeylogger, 13 x MassLogger)
ssdeep 3072:zvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unR:zvEN2U+T6i5LirrllHy4HUcMQY6y
TLSH T16D24D82BEE48601BD56285F09C62B6EEBA353D222F916C4B23D0AF457870653F5B131F
TrID 58.0% (.EXE) Win32 Executable Microsoft Visual Basic 6 (82067/2/8)
22.0% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
7.4% (.EXE) Win64 Executable (generic) (10522/11/4)
3.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
3.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter Hexastrike
Tags:exe Worm.Mofksys

Intelligence

File Origin
# of uploads :
1
# of downloads :
14
Origin country :
IE IE
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/40622/
Detection(s):
Win.Malware.Swisyn-7610494-0
Create hunting rule

Win.Virus.Sality-6335700-2
Create hunting rule

Win.Malware.Swisyn-9942393-0
Create hunting rule

Win.Trojan.VBGeneric-6735885-0
Create hunting rule

Win.Virus.Sality-6747602-0
Create hunting rule

Win.Trojan.Kazy-304
Create hunting rule

PUA.Win.Packer.ProtectSharewar-2
Create hunting rule

PUA.Win.Packer.ProtectSharewar-3
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Creating a file in the Windows subdirectories
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a process with a hidden window
Setting a keyboard event handler
Setting a global event handler
Creating a file in the %AppData% directory
Sending a custom TCP request
Setting a single autorun event
Launching the process to create tasks for the scheduler
Enabling autorun
Enabling a "Do not show hidden files" option
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
explorer lolbin overlay overlay visual_basic
Link:
https://www.filescan.io/uploads/6922dbd4f96b58f0dc80b538/reports/42e457ae-ade5-4c31-8358-09fcc954749d/overview
Verdict:
Malicious
Labled as:
Trojan.Swisyn
Link:
https://www.hybrid-analysis.com/sample/900af3c79e54bdabcb7d1764a81658fa96af772c1da57d8a3c5326e874cf8232
Result
Gathering data
Score:
88%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/900af3c79e54bdabcb7d1764a81658fa96af772c1da57d8a3c5326e874cf8232
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Visual Basic Visual Basic 6 Win 32 Exe x86
Link:
https://app.malva.re/file/2a06bca81303b0a9368b9e253a262d6a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/900af3c79e54bdabcb7d1764a81658fa96af772c1da57d8a3c5326e874cf8232/
Threat name:
Win32.Worm.Mofksys
Create hunting rule
Status:
Malicious
First seen:
2025-11-22 20:14:06 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
35 of 36 (97.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=safphr46ks62xs35c5skqfsy7klk65zmdwsx3cr4kmtoq5gpqiza._file
Result
Malware family:
mofksys
Create hunting rule
Score:
  10/10
Tags:
family:mofksys defense_evasion discovery persistence worm
Link:
https://tria.ge/reports/251123-l3a8tsynbj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Adds Run key to start application
Executes dropped EXE
Boot or Logon Autostart Execution: Active Setup
Detects Mofksys worm
Modifies WinLogon for persistence
Modifies visibility of hidden/system files in Explorer
Mofksys
Mofksys family
Verdict:
Malicious
Tags:
trojan Win.Malware.Swisyn-7610494-0
YARA:
Windows_Generic_Threat_2bb7fbe3
Link:
https://app.threat.zone/submission/670fdeb7-afe4-4d67-8fb9-5e9e612ea503
Unpacked files
SH256 hash:
900af3c79e54bdabcb7d1764a81658fa96af772c1da57d8a3c5326e874cf8232
MD5 hash:
2a06bca81303b0a9368b9e253a262d6a
SHA1 hash:
6580e6db54bb474198c1f824974a05870c7b86a1
Detections:
win_mofksys_auto
Create hunting rule
Link:
https://www.unpac.me/results/dede56fa-fe87-47be-992d-b2fa3bc5e762/
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/900af3c79e54bdabcb7d1764a81658fa96af772c1da57d8a3c5326e874cf8232

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:ProtectSharewareV11eCompservCMS
Create hunting rule
Author:malware-lu
Rule name:SEH__vba
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SUSP_Imphash_Mar23_2
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Zero hits with with search for 'imphash:x p:0' on Virustotal)
Reference:Internal Research
Rule name:Windows_Generic_Threat_2bb7fbe3
Create hunting rule
Author:Elastic Security
Rule name:win_mofksys_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.mofksys.

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/40622/

Comments