MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8939141fb565c044895627bbeb522d840d24899dec53545e4a925012dbf83230. 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


MedusaLocker


Vendor detections: 14


Intelligence 14 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8939141fb565c044895627bbeb522d840d24899dec53545e4a925012dbf83230
SHA3-384 hash: 660e9ffcd78e8893bbb63bd3bbd4338cf82e39f2963a341c6a89780386ae467769ef630506089b6a3df5d4d2ff6931ff
SHA1 hash: dd19f66b3ea50e325ee07af5b1e348ed0721a86a
MD5 hash: 61b0906f31ce772130b0ee9c4b86dc92
humanhash: violet-georgia-mexico-robin
File name:8939141fb565c044895627bbeb522d840d24899dec53545e4a925012dbf83230
Download: download sample
Signature MedusaLocker
Create hunting rule
File size:685'568 bytes
First seen:2022-04-08 10:47:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1a395bd10b20c116b11c2db5ee44c225 (42 x MedusaLocker)
ssdeep 12288:dQA0FfTcwpBuV2UxqDmuiLZeUaoFi2XZWfGe615HhAZV8DCKD/KeX:Tuf4wTuV2Ux3uIZeUBi2Te6HWLKrKe
Threatray 15 similar samples on MalwareBazaar
TLSH T11FE49E1035818132EAB301718EBDA66D517DF9220B6A59DBA3CC256D4F7D9F27E32233
Reporter JAMESWT_WT
Tags:exe MedusaLocker

Intelligence

File Origin
# of uploads :
1
# of downloads :
268
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
8939141fb565c044895627bbeb522d840d24899dec53545e4a925012dbf83230
Verdict:
No threats detected
Analysis date:
2022-04-08 11:50:08 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/9f7f98d6-1a9f-4611-afe2-ca061de3fcc7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
MedusaLocker
Create hunting rule
Link:
https://www.capesandbox.com/analysis/262107/
Detection(s):
Win.Ransomware.Medusalocker-9811271-0
Create hunting rule

Win.Ransomware.MedusaLocker-9811277-1
Create hunting rule

Win.Ransomware.MedusaLocker-9811280-1
Create hunting rule

Win.Ransomware.MedusaLocker-9811361-1
Create hunting rule

ditekSHen.MALWARE.Win.Ransomware.MedusaLocker.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Changing a file
Creating a file
Launching a process
Enabling the 'hidden' option for recently created files
Sending a custom TCP request
Moving a recently created file
Network activity
Blocking the User Account Control
Creating a file in the mass storage device
Enabling autorun by creating a file
Encrypting user's files
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/13168/overview
Behaviour
MalwareBazaar
MeasuringTime
CheckCmdLine
EvasionQueryPerformanceCounter
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe evasive exploit filecoder greyware locky medusa medusalocker ransomware shell32.dll wmic.exe
Link:
https://www.filescan.io/uploads/625012e6d53a7479dada6763/reports/09182cce-91fc-4e61-840b-93d76f0eb17a/overview
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.
Malware family:
Medusa
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ece7775e-274b-4d97-94df-96e8e58d842a
Result
Threat name:
MedusaLocker
Create hunting rule
Detection:
malicious
Classification:
rans.spre.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/973075
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to modify Windows User Account Control (UAC) settings
Deletes shadow drive data (may be related to ransomware)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Shadow Copies Deletion Using Operating Systems Utilities
Spreads via windows shares (copies files to share folders)
Writes a notice file (html or txt) to demand a ransom
Writes many files with high entropy
Yara detected MedusaLocker Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 605560 Sample: 59ADfxZ2X9 Startdate: 08/04/2022 Architecture: WINDOWS Score: 100 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus / Scanner detection for submitted sample 2->50 52 Multi AV Scanner detection for submitted file 2->52 54 5 other signatures 2->54 7 59ADfxZ2X9.exe 244 36 2->7         started        12 svhost.exe 2->12         started        process3 dnsIp4 42 192.168.2.1, 274 unknown unknown 7->42 44 192.168.2.10 unknown unknown 7->44 46 98 other IPs or domains 7->46 34 C:\Users\user\AppData\Roaming\svhost.exe, PE32 7->34 dropped 36 Z:\Recovery\...\boot.sdi.ntlock18 (copy), data 7->36 dropped 38 Z:\Recovery\...\Winre.wim.ntlock18 (copy), data 7->38 dropped 40 81 other files (79 malicious) 7->40 dropped 56 Contains functionality to bypass UAC (CMSTPLUA) 7->56 58 Deletes shadow drive data (may be related to ransomware) 7->58 60 Writes a notice file (html or txt) to demand a ransom 7->60 68 3 other signatures 7->68 14 WMIC.exe 1 7->14         started        16 WMIC.exe 1 7->16         started        18 WMIC.exe 1 7->18         started        20 3 other processes 7->20 62 Antivirus detection for dropped file 12->62 64 Multi AV Scanner detection for dropped file 12->64 66 Machine Learning detection for dropped file 12->66 file5 signatures6 process7 process8 22 conhost.exe 14->22         started        24 conhost.exe 16->24         started        26 conhost.exe 18->26         started        28 conhost.exe 20->28         started        30 conhost.exe 20->30         started        32 conhost.exe 20->32         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8939141fb565c044895627bbeb522d840d24899dec53545e4a925012dbf83230/
Threat name:
Win32.Ransomware.MedusaLocker
Create hunting rule
Status:
Malicious
First seen:
2021-12-01 02:21:00 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
27 of 28 (96.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=re4rih5vmxaejckwe656wurnqqgsjcm55rjvixsksjibfw7ygiya._file
Verdict:
malicious
Label(s):
ryuk
Create hunting rule
Similar samples:
461f8a55ea2eecfcc26562326af4b56fbaf8e4957a4a6e0b75bec8ee90ace078
MedusaLocker
4f9a833e79092006c06203a66b41fc9250bcebcee148fea404db75d52035131c
MedusaLocker
8597f458f1dcc5ecdf209d9c98b1f72c2fce2486236a3ae73adbe26fb6f9c671
MedusaLocker
bc8487f444ed159dc422bc062c47141357eb64fc49838e5bfd758e05a8317343
MedusaLocker
cb12325d13acb03ad4f9977f426baf8b4688af04d4ffe23aa5f1bbd747a147c0
MedusaLocker
d595339cbbf415eca195eb3a0d9a8b6c9ff82a0cf36e4e867f5cef24503bb532
MedusaLocker
dbac4f2fffcb4e09aad772895647e8f161b1ac713592fe47c5e8207c85722f13
MedusaLocker
+ 5 additional samples on MalwareBazaar
Result
Malware family:
medusalocker
Create hunting rule
Score:
  10/10
Tags:
family:medusalocker evasion ransomware spyware stealer trojan
Link:
https://tria.ge/reports/220408-mv4e3scde5/
Behaviour
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Checks whether UAC is enabled
Drops desktop.ini file(s)
Enumerates connected drives
Reads user/profile data of web browsers
Executes dropped EXE
Modifies extensions of user files
Deletes shadow copies
MedusaLocker
MedusaLocker Payload
UAC bypass
Unpacked files
SH256 hash:
b7634d96d331a872a41bdf67df0fd4cca5b0705388bc96a441c029ec1c5c86d9
MD5 hash:
e6976968fc62f389e34f4e5599e9254c
SHA1 hash:
7db5f4359f3c8fffbe9fa23d83f2de7852c0edba
Link:
https://www.unpac.me/results/0a3ead56-feb1-455b-ac5b-fe02e8a39c22/
SH256 hash:
8bbd2fe90567197faebeb7ab11329a1843897d4cacce99fc0020b043509b40af
MD5 hash:
bddf3bb99c6c7657b6efdfe596b4f8c9
SHA1 hash:
25da2c474a3961ee4a86b65aa90d4e41420723be
Link:
https://www.unpac.me/results/0a3ead56-feb1-455b-ac5b-fe02e8a39c22/
SH256 hash:
22e3170cc418e2703c9579ab0988870bf3ef7edff2b6181158f3d4d2455b33c5
MD5 hash:
d3f7226f971df2704a50a5e1228b482d
SHA1 hash:
facc12bb5683d3402cd6ab0c30430bfcb6bb3864
Link:
https://www.unpac.me/results/0a3ead56-feb1-455b-ac5b-fe02e8a39c22/
SH256 hash:
f5926b3eb4cf4307e1a30600739f36c6875408609e44a7f3816de4b158dc9f59
MD5 hash:
75d3ef175872e9abb452f0238dc0a776
SHA1 hash:
9972006e582fe7a1ff6d7867ccd240f6bae1569d
Link:
https://www.unpac.me/results/0a3ead56-feb1-455b-ac5b-fe02e8a39c22/
SH256 hash:
2d83ba09f6dece1dc85dc9ae1814cc3b882fada56003a87f1489ba2e8d98bc67
MD5 hash:
e0a75c86c260c6a44ff23aaabeb0a20c
SHA1 hash:
d300997572da16caa73c0c9248ba68d9aaf2a5aa
Link:
https://www.unpac.me/results/0a3ead56-feb1-455b-ac5b-fe02e8a39c22/
SH256 hash:
a24b15869a883b405c5368c002f51086a3199744be4809bbbd04a7416f7b1db3
MD5 hash:
972ab5e9cef912813e59c58a9576b656
SHA1 hash:
080c87e36aada3c5ad27aac49fe668285808a709
Link:
https://www.unpac.me/results/0a3ead56-feb1-455b-ac5b-fe02e8a39c22/
SH256 hash:
7916c7ad1a33531f941d9ada771ade2f5825ef4fc9f8473f8a988ecb16525dd8
MD5 hash:
2da8ab1192187d1f9cf02aed04b0d0b7
SHA1 hash:
326db513af5a9f898c4870ebbc62e7cd5fd71690
Link:
https://www.unpac.me/results/0a3ead56-feb1-455b-ac5b-fe02e8a39c22/
SH256 hash:
38f803929f3400537abce3adb27fb360a562bb58ef6fef5670d8eda1af042cb9
MD5 hash:
901ae11d5e7648350343469a92fad606
SHA1 hash:
29ba6d7d33c1b73033258f5c353e6f3077c45109
Link:
https://www.unpac.me/results/0a3ead56-feb1-455b-ac5b-fe02e8a39c22/
SH256 hash:
8939141fb565c044895627bbeb522d840d24899dec53545e4a925012dbf83230
MD5 hash:
61b0906f31ce772130b0ee9c4b86dc92
SHA1 hash:
dd19f66b3ea50e325ee07af5b1e348ed0721a86a
Detections:
win_medusalocker_auto
Create hunting rule
Link:
https://www.unpac.me/results/0a3ead56-feb1-455b-ac5b-fe02e8a39c22/
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/8939141fb565c044895627bbeb522d840d24899dec53545e4a925012dbf83230

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:ICMLuaUtil_UACMe_M41
Create hunting rule
Author:Marius 'f0wL' Genheimer <hello@dissectingmalwa.re>
Description:A Yara rule for UACMe Method 41 -> ICMLuaUtil Elevated COM interface
Reference:https://github.com/hfiref0x/UACME
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:INDICATOR_SUSPICIOUS_GENRansomware
Create hunting rule
Author:ditekSHen
Description:detects command variations typically used by ransomware
Rule name:MALWARE_Win_MedusaLocker
Create hunting rule
Author:ditekshen
Description:Detects MedusaLocker ransomware
Rule name:RAN_MedusaLocker_Aug_2021_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect MedusaLocker ransomware
Reference:Internal Research
Rule name:win_medusalocker_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.medusalocker.

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/262107/

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