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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca57455fd148754bf443a2c8b06dc2a295f014b071e3990dd99916250d21bc75. 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


LockBit


Vendor detections: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ca57455fd148754bf443a2c8b06dc2a295f014b071e3990dd99916250d21bc75
SHA3-384 hash: 91cf4db17b39416066c0c1502755b2a2031cac678e51469960413efcd4f23831b137c41de6da423ccb8ab982aa47da59
SHA1 hash: 488e532e55100da68eaeee30ba342cc05810e296
MD5 hash: e4179bca5bf5b1fd51172d629f5521f8
humanhash: cardinal-hydrogen-sink-music
File name:ca57455fd148754bf443a2c8b06dc2a295f014b071e3990dd99916250d21bc75.bin
Download: download sample
Signature LockBit
Create hunting rule
File size:559'104 bytes
First seen:2022-05-04 15:40:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'234 x AgentTesla, 20'488 x Formbook, 12'372 x SnakeKeylogger)
ssdeep 12288:eE+eJEf0D+DKSu2eyFS5QBjzLHbhlCKCyTHxTwztt0v93aOy1032Du4IafBEqJX:KC8bbE0wFH
TLSH T1D6C438343DEA501AB173EFA99BE4749ADA6FB7333B03645D1091038A4723A81DEC153E
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter Arkbird_SOLG
Tags:exe lockbit Ransomware

Intelligence

File Origin
# of uploads :
1
# of downloads :
980
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ca57455fd148754bf443a2c8b06dc2a295f014b071e3990dd99916250d21bc75.exe
Verdict:
Malicious activity
Analysis date:
2022-04-05 18:55:11 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/49d0e0e5-bbfb-414c-ad43-f67a2f74bde2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Lockbit
Create hunting rule
Link:
https://www.capesandbox.com/analysis/268678/
Detection(s):
Win.Ransomware.LockBitCombined-9375766-1
Create hunting rule

Win.Trojan.Ursu-9794867-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file
Creating a window
Searching for synchronization primitives
Enabling the 'hidden' option for recently created files
Running batch commands
Replacing files
Changing a file
Moving a file to the Program Files subdirectory
Creating a file in the Program Files subdirectories
Launching a service
Creating a file in the Windows subdirectories
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Creating a file in the mass storage device
Deleting volume shadow copies
Preventing system recovery
Unauthorized injection to a system process
Forced shutdown of a browser
Encrypting user's files
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed vbc.exe
Link:
https://www.filescan.io/uploads/62729e7262b1ae4451d6a9cd/reports/66275d8e-4a9c-4c81-8d37-bde59d2e0f70/overview
Malware family:
LockBit Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e7f52d29-569f-4241-9a95-5dbc9145700f
Result
Threat name:
LockBit ransomware
Create hunting rule
Detection:
malicious
Classification:
rans.spre.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/987909
Signature
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Connects to many different private IPs (likely to spread or exploit)
Connects to many different private IPs via SMB (likely to spread or exploit)
Creates an autostart registry key pointing to binary in C:\Windows
Creates files inside the volume driver (system volume information)
Deletes shadow drive data (may be related to ransomware)
Deletes the backup plan of Windows
Found ransom note / readme
Found Tor onion address
Hides threads from debuggers
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May disable shadow drive data (uses vssadmin)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sample uses process hollowing technique
Spreads via windows shares (copies files to share folders)
Uses bcdedit to modify the Windows boot settings
Writes a notice file (html or txt) to demand a ransom
Yara detected LockBit ransomware
Yara detected RansomwareGeneric
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 620405 Sample: VWv6MRa8Jk.bin Startdate: 04/05/2022 Architecture: WINDOWS Score: 100 56 Multi AV Scanner detection for domain / URL 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 Antivirus detection for URL or domain 2->60 62 10 other signatures 2->62 8 VWv6MRa8Jk.exe 3 2->8         started        12 wbengine.exe 2->12         started        14 vbc.exe 1 2->14         started        16 3 other processes 2->16 process3 file4 48 C:\Users\user\AppData\...\VWv6MRa8Jk.exe.log, ASCII 8->48 dropped 72 Sample uses process hollowing technique 8->72 18 vbc.exe 7 110 8->18         started        74 Creates files inside the volume driver (system volume information) 12->74 23 conhost.exe 14->23         started        25 conhost.exe 16->25         started        signatures5 process6 dnsIp7 50 192.168.2.100 unknown unknown 18->50 52 192.168.2.101 unknown unknown 18->52 54 98 other IPs or domains 18->54 40 C:\Users\user\Desktop\Restore-My-Files.txt, ASCII 18->40 dropped 42 C:\Users\user\...\Restore-My-Files.txt, ASCII 18->42 dropped 44 C:\Users\user\...\Restore-My-Files.txt, ASCII 18->44 dropped 46 10 other files (7 malicious) 18->46 dropped 64 Connects to many different private IPs via SMB (likely to spread or exploit) 18->64 66 Connects to many different private IPs (likely to spread or exploit) 18->66 68 Deletes shadow drive data (may be related to ransomware) 18->68 70 6 other signatures 18->70 27 cmd.exe 1 18->27         started        30 conhost.exe 18->30         started        file8 signatures9 process10 signatures11 76 May disable shadow drive data (uses vssadmin) 27->76 78 Deletes shadow drive data (may be related to ransomware) 27->78 80 Uses bcdedit to modify the Windows boot settings 27->80 82 Deletes the backup plan of Windows 27->82 32 bcdedit.exe 8 1 27->32         started        34 bcdedit.exe 7 1 27->34         started        36 WMIC.exe 1 27->36         started        38 3 other processes 27->38 process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ca57455fd148754bf443a2c8b06dc2a295f014b071e3990dd99916250d21bc75/
Threat name:
Win32.Ransomware.LockBit
Create hunting rule
Status:
Malicious
First seen:
2020-02-24 22:03:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
38 of 42 (90.48%)
Threat level:
  5/5
Verdict:
malicious
Result
Malware family:
lockbit
Create hunting rule
Score:
  10/10
Tags:
family:lockbit evasion persistence ransomware
Link:
https://tria.ge/reports/220504-s4rersebg8/
Behaviour
Checks SCSI registry key(s)
Interacts with shadow copies
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Program Files directory
Drops file in Windows directory
Sets desktop wallpaper using registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Uses the VBS compiler for execution
Deletes backup catalog
Modifies extensions of user files
Deletes shadow copies
Modifies boot configuration data using bcdedit
Lockbit
Unpacked files
SH256 hash:
26b6a9fecfc9d4b4b2c2ff02885b257721687e6b820f72cf2e66c1cae2675739
MD5 hash:
207718c939673a5f674ce51f402cfc06
SHA1 hash:
791f60a24f9b6589a2afed48b3ec17fad43bc1db
Detections:
win_lockbit_auto
Create hunting rule
Link:
https://www.unpac.me/results/d18e0865-413a-4f4a-bc21-b6ad5bfb1922/
Parent samples :
ca57455fd148754bf443a2c8b06dc2a295f014b071e3990dd99916250d21bc75
26b6a9fecfc9d4b4b2c2ff02885b257721687e6b820f72cf2e66c1cae2675739
SH256 hash:
ca57455fd148754bf443a2c8b06dc2a295f014b071e3990dd99916250d21bc75
MD5 hash:
e4179bca5bf5b1fd51172d629f5521f8
SHA1 hash:
488e532e55100da68eaeee30ba342cc05810e296
Link:
https://www.unpac.me/results/d18e0865-413a-4f4a-bc21-b6ad5bfb1922/
Malware family:
LockBit
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ca57455fd148/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ca57455fd148754bf443a2c8b06dc2a295f014b071e3990dd99916250d21bc75

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_lockbit_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

The table below shows additional information about this malware sample such as delivery method and external references.

  
Link
https://www.mcafee.com/blogs/other-blogs/mcafee-labs/tales-from-the-trenches-a-lockbit-ransomware-story/
Cape
Cape
https://www.capesandbox.com/analysis/268678/

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