MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fa126a21c23cf57eb2ebbc8cd9df0a39707dd64a090f0f299416fca5a7fc63fb. 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


VirLock


Vendor detections: 6


Intelligence 6 IOCs YARA File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fa126a21c23cf57eb2ebbc8cd9df0a39707dd64a090f0f299416fca5a7fc63fb
SHA3-384 hash: 51fa1f73c151ac47c7eeece815dc19edb52bb1ae4e5f60b1804c8b5d974cad1cb7929842be2b1a5640fdf9b269ed604e
SHA1 hash: 053b7954128083258c1c1f106763f18e5c26fbf1
MD5 hash: a0be7f64f2215888a783b36e9d0a1f6d
humanhash: summer-helium-pluto-blue
File name:a0be7f64_by_Libranalysis
Download: download sample
Signature VirLock
Create hunting rule
File size:637'952 bytes
First seen:2021-05-05 08:08:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 19ead757bce1b9d38f22fdb907e3fee2 (1 x VirLock)
ssdeep 12288:7k4A5MNVaikHZl6dD+oaj/RsElKv45sA65HXUTS6WYR7I6urFBMDU6:Kr5KD+oK/3SXUTS6WYlIyb
Threatray 54 similar samples on MalwareBazaar
TLSH 5FD4F11AC0D7E6C3F97B3F71E9E44284388CAFC54D39A116BD69A4CA5CC59E8D18138E
Reporter Libranalysis


Avatar
Libranalysis
Uploaded as part of the sample sharing project

Intelligence

File Origin
# of uploads :
1
# of downloads :
101
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/150064/
Detection(s):
Win.Virus.Virlock-6332874-0
Create hunting rule

Win.Virus.Virlock-6804475-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file
Creating a process from a recently created file
Creating a service
DNS request
Launching a service
Creating a file in the Windows subdirectories
Searching for the window
Creating a file in the %temp% directory
Running batch commands
Deleting a recently created file
Launching a process
Creating a process with a hidden window
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun for a service
Enabling autorun
Brute forcing passwords of local accounts
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.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/711654
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Changes the view of files in windows explorer (hidden files and folders)
Command shell drops VBS files
Contains functionality to automate explorer (e.g. start an application)
Contains functionality to check if Internet connection is working
Creates an undocumented autostart registry key
Delayed program exit found
Drops batch files with force delete cmd (self deletion)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Sigma detected: WScript or CScript Dropper
Tries to detect virtualization through RDTSC time measurements
Uses cmd line tools excessively to alter registry or file data
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 404754 Sample: a0be7f64_by_Libranalysis Startdate: 05/05/2021 Architecture: WINDOWS Score: 100 103 Antivirus / Scanner detection for submitted sample 2->103 105 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->105 107 Multi AV Scanner detection for submitted file 2->107 109 2 other signatures 2->109 11 a0be7f64_by_Libranalysis.exe 3 16 2->11         started        15 wsAwYQYg.exe 4 2->15         started        17 svchost.exe 2->17         started        20 3 other processes 2->20 process3 dnsIp4 87 C:\Users\user\ekcscEEcbehaviorgraphQcQsosU.exe, PE32 11->87 dropped 89 C:\ProgramData\xWUUoYMw\DGgQkgos.exe, PE32 11->89 dropped 91 C:\ProgramData\TsAAwocw\wsAwYQYg.exe, PE32 11->91 dropped 93 C:\Users\user\AppData\Local\...\XswYYAcE.bat, ASCII 11->93 dropped 127 Creates an undocumented autostart registry key 11->127 129 Uses cmd line tools excessively to alter registry or file data 11->129 131 Drops batch files with force delete cmd (self deletion) 11->131 133 Delayed program exit found 11->133 22 cmd.exe 1 11->22         started        24 DGgQkgos.exe 22 11->24         started        28 GQcQsosU.exe 24 11->28         started        30 4 other processes 11->30 135 Antivirus detection for dropped file 15->135 137 Machine Learning detection for dropped file 15->137 139 Tries to detect virtualization through RDTSC time measurements 15->139 97 127.0.0.1 unknown unknown 17->97 file5 signatures6 process7 dnsIp8 32 a0be7f64_by_Libranalysis.exe 4 22->32         started        36 conhost.exe 22->36         started        99 192.168.2.1 unknown unknown 24->99 111 Antivirus detection for dropped file 24->111 113 Contains functionality to check if Internet connection is working 24->113 115 Machine Learning detection for dropped file 24->115 117 Contains functionality to automate explorer (e.g. start an application) 28->117 119 Tries to detect virtualization through RDTSC time measurements 28->119 121 Delayed program exit found 28->121 123 Changes the view of files in windows explorer (hidden files and folders) 30->123 38 conhost.exe 30->38         started        40 conhost.exe 30->40         started        42 conhost.exe 30->42         started        signatures9 process10 file11 83 C:\Users\user\...\a0be7f64_by_Libranalysis, Microsoft 32->83 dropped 85 C:\Users\user\AppData\Local\...\yqoQUYEc.bat, ASCII 32->85 dropped 101 Uses cmd line tools excessively to alter registry or file data 32->101 44 cmd.exe 32->44         started        48 cmd.exe 1 32->48         started        50 reg.exe 32->50         started        52 2 other processes 32->52 signatures12 process13 file14 95 C:\Users\user\AppData\Local\Temp\file.vbs, ASCII 44->95 dropped 141 Command shell drops VBS files 44->141 54 conhost.exe 44->54         started        56 cscript.exe 44->56         started        58 a0be7f64_by_Libranalysis.exe 48->58         started        61 conhost.exe 48->61         started        63 conhost.exe 50->63         started        65 conhost.exe 50->65         started        67 conhost.exe 52->67         started        69 conhost.exe 52->69         started        signatures15 process16 signatures17 125 Uses cmd line tools excessively to alter registry or file data 58->125 71 reg.exe 58->71         started        73 reg.exe 58->73         started        75 reg.exe 58->75         started        process18 process19 77 conhost.exe 71->77         started        79 conhost.exe 73->79         started        81 conhost.exe 75->81         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fa126a21c23cf57eb2ebbc8cd9df0a39707dd64a090f0f299416fca5a7fc63fb/
Threat name:
Win32.Ransomware.VirLock
Create hunting rule
Status:
Malicious
First seen:
2020-05-07 00:57:29 UTC
AV detection:
46 of 48 (95.83%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
0a9e2160871be8409cb531b94c71e5411d8f5dcfcfc40c37b65a56923ec71daf
VirLock
30a028001a68cdf37581ab6f3ce9a246ace357589a0f01105f432c09746e317d
VirLock
671fb988c777ad27531f39dd4fb5f4c4483fb7b07e8e493cd72ee8a6572db576
VirLock
89164a030c95d2445557ae7a793a7ab7d849b628fbafb0f483100c580a043a93
VirLock
8926a917f30b552fa4aa51861c526754c8033c286526a2fb95ed7663fbd690ab
VirLock
8a139fcd70cf23b397ef1bb31a6b8a5990bd2018bd7e42da6db865a52d49549d
VirLock
c3cab87bb11691778b8aa91cd39945710eeb947e34ed4b980f0df655ed557b32
VirLock
d662eebe16b90f597adeb4a215b05fc65db54078ad55e1d2bd013fda84a64b96
VirLock
e7f4ee5fe23b5c2d98044b31c5e858b451ef78539c708f1cf14dbfc152617817
VirLock
fe0d1bf3cfb9d2c9efa26530095d4541d82b5b80bc73d21d387ca3e37846b5c8
VirLock
+ 44 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion persistence ransomware spyware stealer trojan
Link:
https://tria.ge/reports/210505-bc9wt8db3n/
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Drops file in Windows directory
Drops file in System32 directory
Adds Run key to start application
Checks whether UAC is enabled
Checks computer location settings
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
Modifies extensions of user files
Modifies WinLogon for persistence
Modifies visibility of file extensions in Explorer
UAC bypass
Unpacked files
SH256 hash:
9078d8e1213ac404f66d98591b90ca70ddde60e6982b0a9186b3eb9695c2a04a
MD5 hash:
37973fea3a8d4f630c35ee595c599231
SHA1 hash:
65c41470bed8216fefcfde8d414305c8582c5b8b
Link:
https://www.unpac.me/results/d70b3281-de83-4835-945e-7398d4aeafda/
SH256 hash:
fa126a21c23cf57eb2ebbc8cd9df0a39707dd64a090f0f299416fca5a7fc63fb
MD5 hash:
a0be7f64f2215888a783b36e9d0a1f6d
SHA1 hash:
053b7954128083258c1c1f106763f18e5c26fbf1
Link:
https://www.unpac.me/results/d70b3281-de83-4835-945e-7398d4aeafda/
Please note that we are no longer able to provide a coverage score for Virus Total.

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/150064/

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-05 09:05:56 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0030.001] Data Micro-objective::MurmurHash::Non-Cryptographic Hash