MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ef1baf100ca217e6cd4763e11fd43b3a69629ea09fae37bfee6155d368e61460. 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
| SHA256 hash: | ef1baf100ca217e6cd4763e11fd43b3a69629ea09fae37bfee6155d368e61460 |
|---|---|
| SHA3-384 hash: | 88aad707fe01dd1323638b5eeece0b58f6d61b4d406594820295ea40979168b6e3c4ffc2caca1663842da3df763d6012 |
| SHA1 hash: | c898fbfecb92fd06702d38227c355ff1b9ee4219 |
| MD5 hash: | 051538afd28e8ce6731b5ed11edad6c2 |
| humanhash: | berlin-seven-mirror-whiskey |
| File name: | svchost.exe |
| Download: | download sample |
| Signature | Worm.Mofksys |
| File size: | 211'940 bytes |
| First seen: | 2025-11-23 09:32:07 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 98f67c550a7da65513e63ffd998f6b2e (60 x Worm.Mofksys, 21 x SnakeKeylogger, 13 x MassLogger) |
| ssdeep | 3072:zvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unm2:zvEN2U+T6i5LirrllHy4HUcMQY6b2 |
| Threatray | 171 similar samples on MalwareBazaar |
| TLSH | T1AE24E82BEA04716BE4628AF0582773A5B7323D321B85AD0F6391AF457476A03B5F431F |
| 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 :
61
Origin country :
IEVendor Threat Intelligence
Detection:
n/a
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
Setting a keyboard event handler
Setting a global event handler
Creating a file in the %AppData% directory
DNS request
Connection attempt
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
Verdict:
Malicious
Labled as:
Trojan.Swisyn
Result
Gathering data
Score:
86%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Visual Basic Visual Basic 6 Win 32 Exe x86
Threat name:
Win32.Worm.Mofksys
Status:
Malicious
First seen:
2025-11-22 10:35:03 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
35 of 36 (97.22%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
mofksys
Similar samples:
+ 161 additional samples on MalwareBazaar
Result
Malware family:
mofksys
Score:
10/10
Tags:
family:mofksys defense_evasion discovery persistence worm
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
Unpacked files
SH256 hash:
ef1baf100ca217e6cd4763e11fd43b3a69629ea09fae37bfee6155d368e61460
MD5 hash:
051538afd28e8ce6731b5ed11edad6c2
SHA1 hash:
c898fbfecb92fd06702d38227c355ff1b9ee4219
Detections:
win_mofksys_auto
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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 |
|---|---|
| Author: | malware-lu |
| Rule name: | SEH__vba |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | SUSP_Imphash_Mar23_2 |
|---|---|
| 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 |
|---|---|
| Author: | Elastic Security |
| Rule name: | win_mofksys_auto |
|---|---|
| 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.
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