MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa4cd5e9ff8ef8e4a72601c03154231631a5179167400a5478ca4282188b1163. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aa4cd5e9ff8ef8e4a72601c03154231631a5179167400a5478ca4282188b1163
SHA3-384 hash: c0f3fe4ffa158bc6ed722ac03ad5f1d423031015dfa9c0f35f767645cbb515b58a91e56ef3185cd93412ca473901316d
SHA1 hash: 6054922a051ce8d25d5d39565a9ad23575b7fe7f
MD5 hash: 5b780f32105ff92593db7b30ea2ac9ed
humanhash: quiet-bacon-johnny-moon
File name:aa4cd5e9ff8ef8e4a72601c03154231631a5179167400a5478ca4282188b1163
Download: download sample
Signature MedusaLocker
Create hunting rule
File size:681'984 bytes
First seen:2022-10-12 21:24:03 UTC
Last seen:2022-10-18 06:46:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 1a395bd10b20c116b11c2db5ee44c225 (42 x MedusaLocker)
ssdeep 12288:ZYW1LNT35lDbK/LIVaN8+T7vwqyqhYMhWt918vulAWC9+m:dd35lDbKDIwWUDyqS5omDC9+
Threatray 49 similar samples on MalwareBazaar
TLSH T13AE4AF1035C28033EAB301718EBD966D916DF9220B266DD7A3D8465E5FB99F27E31233
TrID 32.2% (.EXE) Win64 Executable (generic) (10523/12/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4505/5/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter petikvx
Tags:MedusaLocker

Intelligence

File Origin
# of uploads :
2
# of downloads :
229
Origin country :
n/a
Vendor Threat Intelligence
Detection:
MedusaLocker
Create hunting rule
Link:
https://www.capesandbox.com/analysis/319582/
Detection(s):
ditekSHen.MALWARE.Win.Ransomware.MedusaLocker.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Changing a file
Creating a file in the %AppData% directory
Creating a file
Creating a window
Launching a process
Sending a custom TCP request
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/42785/overview
Behaviour
MalwareBazaar
MeasuringTime
CheckCmdLine
EvasionQueryPerformanceCounter
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm evasive exploit greyware medusalocker shell32.dll wmic.exe
Link:
https://www.filescan.io/uploads/6347307567135c9da246a2ea/reports/f522c6b1-870b-472f-a0c8-48f0c2cea70e/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/47886c46-7e88-410c-91f7-1e7c2e7446a3
Result
Threat name:
Unknown
Detection:
malicious
Classification:
rans.spre.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1089185
Signature
Antivirus / Scanner detection for submitted sample
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)
Disables UAC (registry)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Spreads via windows shares (copies files to share folders)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to shutdown other security tools via broadcasted WM_QUERYENDSESSION
Writes a notice file (html or txt) to demand a ransom
Writes many files with high entropy
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 721784 Sample: 2CmYNFlGfn.exe Startdate: 12/10/2022 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 2 other signatures 2->54 7 2CmYNFlGfn.exe 503 66 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.bulwark9 (copy), data 7->36 dropped 38 Z:\Recovery\...\boot.sdi.bulwark9 (copy), data 7->38 dropped 40 275 other malicious files 7->40 dropped 56 Deletes shadow drive data (may be related to ransomware) 7->56 58 Writes a notice file (html or txt) to demand a ransom 7->58 60 Spreads via windows shares (copies files to share folders) 7->60 66 4 other signatures 7->66 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 Contains functionality to bypass UAC (CMSTPLUA) 12->62 64 Contains functionality to modify Windows User Account Control (UAC) settings 12->64 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/aa4cd5e9ff8ef8e4a72601c03154231631a5179167400a5478ca4282188b1163/
Threat name:
Win32.Ransomware.MedusaLocker
Create hunting rule
Status:
Malicious
First seen:
2022-10-12 21:25:07 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
24 of 26 (92.31%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vjgnl2p7r34ojjzgahadcvbdcyy2kf4rm5aauvdyzjbiegelcfrq._file
Verdict:
malicious
Similar samples:
465ab4311a7db9f0bc10921cf6a0da7a746c4023dd78fdcec1c253eee69e5b9d
MedusaLocker
54b8ca90cd5c6b8053a612d2e8d99bf05f427b36e7fccc0f63427e1f386db186
MedusaLocker
6066e91a9b651a9061d3f0941e6686ff476e5e84e11a51ec3bcae049d84b366b
MedusaLocker
a5fdfacc22914d12eec28fb085f026401db10ae51d4e549dfec6160501be0dcf
MedusaLocker
abbaff145b18d26db84d52669d1279e928d51f1f571f686cb100d7893cb69295
MedusaLocker
ba87d97a4c7dec4e2eef997190f5f875c8564395bf3c95bd95055f447c495387
MedusaLocker
f064dfde1338a45c76c9cbbe9d7c8b358884c32c21510df14ab9b72df9ead1ba
MedusaLocker
+ 39 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/221012-z82vmadahj/
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
Verdict:
Informative
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/82d6b333-d8b3-4c33-b8c0-9f573bfec04f
Unpacked files
SH256 hash:
b7634d96d331a872a41bdf67df0fd4cca5b0705388bc96a441c029ec1c5c86d9
MD5 hash:
e6976968fc62f389e34f4e5599e9254c
SHA1 hash:
7db5f4359f3c8fffbe9fa23d83f2de7852c0edba
Link:
https://www.unpac.me/results/4c31886f-2d7a-4c68-bea7-31a1f6ccadde/
SH256 hash:
8bbd2fe90567197faebeb7ab11329a1843897d4cacce99fc0020b043509b40af
MD5 hash:
bddf3bb99c6c7657b6efdfe596b4f8c9
SHA1 hash:
25da2c474a3961ee4a86b65aa90d4e41420723be
Link:
https://www.unpac.me/results/4c31886f-2d7a-4c68-bea7-31a1f6ccadde/
SH256 hash:
22e3170cc418e2703c9579ab0988870bf3ef7edff2b6181158f3d4d2455b33c5
MD5 hash:
d3f7226f971df2704a50a5e1228b482d
SHA1 hash:
facc12bb5683d3402cd6ab0c30430bfcb6bb3864
Link:
https://www.unpac.me/results/4c31886f-2d7a-4c68-bea7-31a1f6ccadde/
SH256 hash:
f5926b3eb4cf4307e1a30600739f36c6875408609e44a7f3816de4b158dc9f59
MD5 hash:
75d3ef175872e9abb452f0238dc0a776
SHA1 hash:
9972006e582fe7a1ff6d7867ccd240f6bae1569d
Link:
https://www.unpac.me/results/4c31886f-2d7a-4c68-bea7-31a1f6ccadde/
SH256 hash:
2d83ba09f6dece1dc85dc9ae1814cc3b882fada56003a87f1489ba2e8d98bc67
MD5 hash:
e0a75c86c260c6a44ff23aaabeb0a20c
SHA1 hash:
d300997572da16caa73c0c9248ba68d9aaf2a5aa
Link:
https://www.unpac.me/results/4c31886f-2d7a-4c68-bea7-31a1f6ccadde/
SH256 hash:
a24b15869a883b405c5368c002f51086a3199744be4809bbbd04a7416f7b1db3
MD5 hash:
972ab5e9cef912813e59c58a9576b656
SHA1 hash:
080c87e36aada3c5ad27aac49fe668285808a709
Link:
https://www.unpac.me/results/4c31886f-2d7a-4c68-bea7-31a1f6ccadde/
SH256 hash:
7916c7ad1a33531f941d9ada771ade2f5825ef4fc9f8473f8a988ecb16525dd8
MD5 hash:
2da8ab1192187d1f9cf02aed04b0d0b7
SHA1 hash:
326db513af5a9f898c4870ebbc62e7cd5fd71690
Link:
https://www.unpac.me/results/4c31886f-2d7a-4c68-bea7-31a1f6ccadde/
SH256 hash:
38f803929f3400537abce3adb27fb360a562bb58ef6fef5670d8eda1af042cb9
MD5 hash:
901ae11d5e7648350343469a92fad606
SHA1 hash:
29ba6d7d33c1b73033258f5c353e6f3077c45109
Link:
https://www.unpac.me/results/4c31886f-2d7a-4c68-bea7-31a1f6ccadde/
SH256 hash:
aa4cd5e9ff8ef8e4a72601c03154231631a5179167400a5478ca4282188b1163
MD5 hash:
5b780f32105ff92593db7b30ea2ac9ed
SHA1 hash:
6054922a051ce8d25d5d39565a9ad23575b7fe7f
Detections:
win_medusalocker_auto
Create hunting rule
Link:
https://www.unpac.me/results/4c31886f-2d7a-4c68-bea7-31a1f6ccadde/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/aa4cd5e9ff8e/report/overview.html
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/aa4cd5e9ff8ef8e4a72601c03154231631a5179167400a5478ca4282188b1163

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
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:QbotStuff
Create hunting rule
Author:anonymous
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/319582/

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