MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb12325d13acb03ad4f9977f426baf8b4688af04d4ffe23aa5f1bbd747a147c0. 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: 13


Intelligence 13 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cb12325d13acb03ad4f9977f426baf8b4688af04d4ffe23aa5f1bbd747a147c0
SHA3-384 hash: 4f9d2336158e6ff6b664611a1c18f7bc1ba7889e6bc577ecb57cbf5f7208181241a9b504614bbbafb1567482c4f98a92
SHA1 hash: 064acf069b7e319f33a36d0eb456fb5cdb9c6c94
MD5 hash: effc3a4432ac7993f35d8e8239d56f26
humanhash: march-six-music-happy
File name:cb12325d13acb03ad4f9977f426baf8b4688af04d4ffe23aa5f1bbd747a147c0
Download: download sample
Signature MedusaLocker
Create hunting rule
File size:685'568 bytes
First seen:2022-04-08 10:47:38 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1a395bd10b20c116b11c2db5ee44c225 (42 x MedusaLocker)
ssdeep 12288:dQA0FfTcwpBuV2UxqDmuiLZeUaoFi2XZWfGe615HhAZV8DEKD/KeX:Tuf4wTuV2Ux3uIZeUBi2Te6HWpKrKe
Threatray 15 similar samples on MalwareBazaar
TLSH T17BE49E1075818132EAB301718EBDA66D517DF9220B2A58DBA3CC656D4F7D9F27E32233
Reporter JAMESWT_WT
Tags:exe MedusaLocker

Intelligence

File Origin
# of uploads :
1
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
cb12325d13acb03ad4f9977f426baf8b4688af04d4ffe23aa5f1bbd747a147c0
Verdict:
No threats detected
Analysis date:
2022-04-08 11:44:59 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/9617f4dc-f20e-4f9e-80d9-2dfb1e309f0c

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/262110/
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
Сreating synchronization primitives
Creating a file in the %AppData% directory
Changing a file
Creating a file
Creating a window
Launching a process
Enabling the 'hidden' option for recently created files
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/13171/overview
Behaviour
MalwareBazaar
MeasuringTime
CheckCmdLine
EvasionQueryPerformanceCounter
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe evasive exploit greyware shell32.dll wmic.exe
Link:
https://www.filescan.io/uploads/625012eabbd90911a296f6ff/reports/4f640899-ea22-4329-a7c2-02c035ecd940/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/a69ca785-5cb2-4ddd-bfe5-a80a2cdcc1df
Result
Threat name:
MedusaLocker
Create hunting rule
Detection:
malicious
Classification:
rans.spre.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/973103
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: 605593 Sample: Hc7sXS6NL1 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 Hc7sXS6NL1.exe 184 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:\...\tracking.log.exlock20 (copy), data 7->36 dropped 38 Z:\Recovery\...\boot.sdi.exlock20 (copy), data 7->38 dropped 40 78 other malicious files 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/cb12325d13acb03ad4f9977f426baf8b4688af04d4ffe23aa5f1bbd747a147c0/
Threat name:
Win32.Ransomware.MedusaLocker
Create hunting rule
Status:
Malicious
First seen:
2021-12-13 17:43:00 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=zmjdexitvsydvvhzs57ue25prndirlye2t76eovf6g55or5bi7aa._file
Verdict:
malicious
Label(s):
ryuk
Create hunting rule
Similar samples:
461f8a55ea2eecfcc26562326af4b56fbaf8e4957a4a6e0b75bec8ee90ace078
MedusaLocker
4f9a833e79092006c06203a66b41fc9250bcebcee148fea404db75d52035131c
MedusaLocker
8597f458f1dcc5ecdf209d9c98b1f72c2fce2486236a3ae73adbe26fb6f9c671
MedusaLocker
8939141fb565c044895627bbeb522d840d24899dec53545e4a925012dbf83230
MedusaLocker
bc8487f444ed159dc422bc062c47141357eb64fc49838e5bfd758e05a8317343
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-mv4e3scde6/
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:
cb12325d13acb03ad4f9977f426baf8b4688af04d4ffe23aa5f1bbd747a147c0
MD5 hash:
effc3a4432ac7993f35d8e8239d56f26
SHA1 hash:
064acf069b7e319f33a36d0eb456fb5cdb9c6c94
Detections:
win_medusalocker_auto
Create hunting rule
Link:
https://www.unpac.me/results/7b746cf0-c254-4559-ad85-792a2ff85205/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/cb12325d13ac/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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/262110/

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