MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ab3dbc83eb8d3ce1d82d584dff0af04d0ce17c5510c2d8f00fd22c5d6bb551bc. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ab3dbc83eb8d3ce1d82d584dff0af04d0ce17c5510c2d8f00fd22c5d6bb551bc
SHA3-384 hash: f102a735da99e236a7c7800fed66913e4abd62c9fe5a25632df4de5fc811c97cfa6771e8181b49bbdb13d64803595dce
SHA1 hash: 5a9742a090b017047a3f000e5d99550680f3e8a7
MD5 hash: 89c45793ca41ea31be5c2cae3eecc5e7
humanhash: batman-oscar-emma-november
File name:svchost.exe
Download: download sample
Signature Worm.Mofksys
Create hunting rule
File size:230'157 bytes
First seen:2025-11-23 09:28:14 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:YvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6u4Pmug:YvEN2U+T6i5LirrllHy4HUcMQY6i
TLSH T138242A27FE04B02ED492E9F0246661B5B5252E761FD1EC4B6781AF4938B1943B2B530F
TrID 28.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
25.5% (.EXE) Win32 Executable (generic) (4504/4/1)
11.6% (.ICL) Windows Icons Library (generic) (2059/9)
11.5% (.EXE) OS/2 Executable (generic) (2029/13)
11.3% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter Hexastrike
Tags:exe Worm.Mofksys

Intelligence

File Origin
# of uploads :
1
# of downloads :
12
Origin country :
IE IE
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/40741/
Gathering data
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
DNS request
Connection attempt
Setting a keyboard event handler
Setting a global event handler
Creating a file in the %AppData% directory
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 overlay packed packed visual_basic
Link:
https://www.filescan.io/uploads/6922de345d3feebe12d813f9/reports/e409964b-a8d9-48be-aec5-e2ef634b095c/overview
Verdict:
Malicious
Labled as:
Trojan.Swisyn
Link:
https://www.hybrid-analysis.com/sample/ab3dbc83eb8d3ce1d82d584dff0af04d0ce17c5510c2d8f00fd22c5d6bb551bc
Result
Gathering data
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ab3dbc83eb8d3ce1d82d584dff0af04d0ce17c5510c2d8f00fd22c5d6bb551bc
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/89c45793ca41ea31be5c2cae3eecc5e7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ab3dbc83eb8d3ce1d82d584dff0af04d0ce17c5510c2d8f00fd22c5d6bb551bc/
Threat name:
Win32.Trojan.Swisyn
Create hunting rule
Status:
Malicious
First seen:
2025-11-23 06:58:35 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
34 of 36 (94.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vm63za7lru6odwbnlbg76cxqjugoc7cvcdbnr4ap2iwf225vkg6a._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-l86lxstmfy/
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/93c9c650-d336-4d44-8445-cf268525a853
Unpacked files
SH256 hash:
ab3dbc83eb8d3ce1d82d584dff0af04d0ce17c5510c2d8f00fd22c5d6bb551bc
MD5 hash:
89c45793ca41ea31be5c2cae3eecc5e7
SHA1 hash:
5a9742a090b017047a3f000e5d99550680f3e8a7
Detections:
win_mofksys_auto
Create hunting rule
Link:
https://www.unpac.me/results/7e436af1-2892-4208-b2b1-69d3af45334e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.72
Link:
https://yomi.yoroi.company/submissions/ab3dbc83eb8d3ce1d82d584dff0af04d0ce17c5510c2d8f00fd22c5d6bb551bc

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/40741/

Comments