MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a7583a0415eb3b464f3f3fc250e8009b7c941c9223e550d9ecfac14fa2e1c66. 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: 4


Intelligence 4 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a7583a0415eb3b464f3f3fc250e8009b7c941c9223e550d9ecfac14fa2e1c66
SHA3-384 hash: d11e71a12b8806f774c41eb8558e221fd9294e6012c8af501492176cc0433ff22566fe71ad1985a536c2a73713217437
SHA1 hash: 019f6ce110f42a6ad24fa946da87de224c52bbb4
MD5 hash: a443be2bfafce5b341dfce1b5c406895
humanhash: alpha-edward-potato-five
File name:4a7583a0415eb3b464f3f3fc250e8009b7c941c9223e550d9ecfac14fa2e1c66
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:7'701'024 bytes
First seen:2020-06-25 10:43:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 196608:umN+22ZIYiyAUHtkCUp1EQaeA44m12GXhyGnQtB0yCY:3Nf26VyVkTpBaE4Q1gB3CY
TLSH A87633B8EDE5DE1DD16E4DB8839D98CE9DFD5E63025047E4CCBB7910A331242D4932A2
Reporter JAMESWT_WT
Tags:QuasarRAT

Code Signing Certificate

Organisation:Microsoft Software Solutions
Issuer:Microsoft Software Solutions
Algorithm:sha256WithRSAEncryption
Valid from:Jun 20 18:30:36 2020 GMT
Valid to:Jun 20 18:30:36 2021 GMT
Serial number: 39A735649A3572E1ADD4E6C0B2FEA60F
Intelligence: 3 malware samples on MalwareBazaar are signed with this code signing certificate
Thumbprint Algorithm:SHA256
Thumbprint: 9D038CE5140EDBBABD444DBCBB27E478540C30EC970C1BD53ECC563F1C8DCE9F
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/14188/
Detection(s):
SecuriteInfo.com.Generic-EXE.UNOFFICIAL
Create hunting rule

PUA.Win.Adware.Browsefox-6628766-0
Create hunting rule

PUA.Win.Trojan.Generic-6629274-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Running batch commands
Launching a process
Creating a file in the %AppData% directory
Sending a custom TCP request
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Deleting a recently created file
Unauthorized injection to a recently created process
Forced shutdown of a system process
Blocking a possibility to launch for the Windows Task Manager (taskmgr)
Unauthorized injection to a system process
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a7583a0415eb3b464f3f3fc250e8009b7c941c9223e550d9ecfac14fa2e1c66/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-06-25 08:54:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
18 of 31 (58.06%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jj2yhicbl2z3izht6p6ckduabg34sqojei7fkdm6z6wbj6rodrta._file
Verdict:
unknown
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion
Link:
https://tria.ge/reports/200625-lj39x5htxe/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: AddClipboardFormatListener
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetThreadContext
Suspicious use of NtSetInformationThreadHideFromDebugger
Looks up external IP address via web service
Loads dropped DLL
Disables Task Manager via registry modification
Executes dropped EXE
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: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

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/14188/

Comments