MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 59266059bf9ed1325138907f3f74f4838600be78e310b8165333935e18817d5a. 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


QuasarRAT


Vendor detections: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 59266059bf9ed1325138907f3f74f4838600be78e310b8165333935e18817d5a
SHA3-384 hash: 50d68c7572f9130165dd86f7862910afcb95f2fbb4e93c9e1c91044622accf853e2b9789f9677c3c176d345b347a4515
SHA1 hash: fbc9830b1903ef19e85711f6b38152399d2997be
MD5 hash: 210d15b6794a2e1a3889ed6d3c418fa3
humanhash: mars-robert-butter-beer
File name:SecuriteInfo.com.Generic.mg.210d15b6794a2e1a.11305
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:472'064 bytes
First seen:2020-08-31 11:13:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:f7eS0bIXQjo2vJyjQGHoKIPf/K1nyieH:f6S0bIXQjopjQGIzrd
TLSH 5FA41260717C0037EA2C43FE161D149C0322E2596CA1E7E63DD9254EAFE7B86639768F
Reporter SecuriteInfoCom
Tags:QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Ispy
Create hunting rule
Link:
https://www.capesandbox.com/analysis/53433/
Detection(s):
SecuriteInfo.com.Generic.mg.210d15b6794a2e1a.11305.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
DNS request
Unauthorized injection to a recently created process
Creating a file
Sending an HTTP GET request
Using the Windows Management Instrumentation requests
Reading critical registry keys
Setting a global event handler for the keyboard
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/455314
Signature
.NET source code contains very large array initializations
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to steal Mail credentials (via file access)
Yara detected Costura Assembly Loader
Yara detected MassLogger RAT
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/59266059bf9ed1325138907f3f74f4838600be78e310b8165333935e18817d5a/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2020-08-31 03:05:08 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=letgawn7t3iteujysb7t65huqodabpty4milqfstgojv4gebpvna._file
Verdict:
malicious
Label(s):
dridex
Create hunting rule
Result
Malware family:
n/a
Score:
  7/10
Tags:
spyware
Link:
https://tria.ge/reports/200831-lsfpndfxts/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies data under HKEY_USERS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops file in Windows directory
Suspicious use of SetThreadContext
Suspicious use of SetThreadContext
Looks up external IP address via web service
Looks up external IP address via web service
Reads user/profile data of web browsers
Reads user/profile data of web browsers
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/59266059bf9ed1325138907f3f74f4838600be78e310b8165333935e18817d5a

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:masslogger_gcch
Create hunting rule
Author:govcert_ch
Rule name:Quasar_RAT_1
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:win_masslogger_w0
Create hunting rule
Author:govcert_ch

File information

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

Web download

QuasarRAT

Executable exe 59266059bf9ed1325138907f3f74f4838600be78e310b8165333935e18817d5a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/447250/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/53433/

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