MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 889d87031d12f9675ec59b08bda719e74cd5c0f3fe8731060df8ee645e21f4e3. 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: 9
| SHA256 hash: | 889d87031d12f9675ec59b08bda719e74cd5c0f3fe8731060df8ee645e21f4e3 |
|---|---|
| SHA3-384 hash: | 7cca76e6589dd1854aeff8006952dd1928d5a3fe3c63385b841f6053361febcbfad59bfe92b45f4dbefde5b6db9e5d41 |
| SHA1 hash: | c31d4920d2142fd8dd2b945eef7d7839efc1c8f7 |
| MD5 hash: | f07b943297a5dded43cbf0e66e9f40c1 |
| humanhash: | ack-vermont-two-blossom |
| File name: | svchost.exe |
| Download: | download sample |
| Signature | Worm.Mofksys |
| File size: | 77'511 bytes |
| First seen: | 2025-11-23 09:25:34 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | de3863888c83837b13b7c1a90a18d46c (2 x Worm.Mofksys, 1 x Mimikatz, 1 x REntS) |
| ssdeep | 1536:EqmwDnVOwg24L7US5n1AZjzlwBkW1hm5bK2HMEb2yK3mF:+w7VOE4keqzuBT1hgHtCyK2F |
| TLSH | T15B73D0BE63331324C7F9507691D5939B4224BC5F247C426AEBAC749A2A58B3C5C8EC73 |
| TrID | 60.5% (.EXE) UPX compressed Win32 Executable (27066/9/6) 11.2% (.EXE) Win16 NE executable (generic) (5038/12/1) 10.0% (.EXE) Win32 Executable (generic) (4504/4/1) 4.6% (.ICL) Windows Icons Library (generic) (2059/9) 4.5% (.EXE) OS/2 Executable (generic) (2029/13) |
| Magika | pebin |
| Reporter |  Hexastrike |
| Tags: | exe UPX |
UPX packed
This file is packed with UPX. We have therefore unpacked the file. Below is furhter information about the unpacked (de-compressed) file.
| File size (compressed) : | 77'511 bytes |
|---|---|
| File size (de-compressed) : | 197'319 bytes |
| Format: | win32/pe |
| Unpacked file: | 806fef1f890ebcf0749e98eaccae82d6b2f200147c7d7c6dad61f2c4675bc25b |
Intelligence
File Origin
# of uploads :
1
# of downloads :
9
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
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:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
overlay packed packed packed upx visual_basic
Verdict:
Malicious
Labled as:
Trojan.Swisyn
Result
Gathering data
Score:
90%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 32 Exe x86
Threat name:
Win32.Trojan.Swisyn
Status:
Malicious
First seen:
2025-11-22 07:41:00 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
35 of 36 (97.22%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
10/10
Tags:
defense_evasion discovery persistence upx
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
UPX packed file
Adds Run key to start application
Executes dropped EXE
Boot or Logon Autostart Execution: Active Setup
Modifies WinLogon for persistence
Modifies visibility of hidden/system files in Explorer
Verdict:
Malicious
Tags:
Win.Malware.Swisyn-7610494-0
YARA:
n/a
Unpacked files
SH256 hash:
889d87031d12f9675ec59b08bda719e74cd5c0f3fe8731060df8ee645e21f4e3
MD5 hash:
f07b943297a5dded43cbf0e66e9f40c1
SHA1 hash:
c31d4920d2142fd8dd2b945eef7d7839efc1c8f7
SH256 hash:
9fb429a7151db67e485912f66a3c701f54c40971ce59dab2c2edb4a50ce3e337
MD5 hash:
d45295c8b4b260041fef6c793ccf87a2
SHA1 hash:
726671ee1ef2f18b5ec246d211af698db2757e3a
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: | UPX290LZMAMarkusOberhumerLaszloMolnarJohnReiser |
|---|---|
| Author: | malware-lu |
| Rule name: | UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser |
|---|---|
| Author: | malware-lu |
| Rule name: | UPXv20MarkusLaszloReiser |
|---|---|
| Author: | malware-lu |
| Rule name: | upx_3 |
|---|---|
| Author: | Kevin Falcoz |
| Description: | UPX 3.X |
| 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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