mời bạn vào blog của tôi

Thứ Sáu, 2 tháng 6, 2023

2020-12-13 SUNBURST SolarWinds Backdoor Samples

2020-12-13 Fireeye
Highly Evasive Attacker Leverages SolarWinds Supply Chain to Compromise Multiple Global Victims With SUNBURST Backdoor

The Resurgence of Russian Threat Actor, NOBELIUM

Download (627.7 MB). Email me if you need the password (see in my profile)

Malware Inventory (work in progress)

Reference

I am sure you all saw the news.

Links updated: Jan 19, 2023

2020-12-13 Microsoft

Customer Guidance on Recent Nation-State Cyber Attacks

The Resurgence of Russian Threat Actor, NOBELIUM

Well, here are the Sunburst binaries.

Here is a Sunburst malware analysis walk-through video by Colin Hardy

https://www.youtube.com/watch?v=JoMwrkijTZ8&feature=youtu.be

Hashes

SolarWinds.Orion.Core.BusinessLayer.dll

Trojan:MSIL/Solorigate.B!dha

A Variant Of MSIL/SunBurst.A

SolarWinds.Orion.Core.BusinessLayer.dll

32519b85c0b422e4656de6e6c41878e95fd95026267daab4215ee59c107d6c77

dab758bf98d9b36fa057a66cd0284737abf89857b73ca89280267ee7caf62f3b

eb6fab5a2964c5817fb239a7a5079cabca0a00464fb3e07155f28b0a57a2c0ed

c09040d35630d75dfef0f804f320f8b3d16a481071076918e9b236a321c1ea77

ac1b2b89e60707a20e9eb1ca480bc3410ead40643b386d624c5d21b47c02917c

019085a76ba7126fff22770d71bd901c325fc68ac55aa743327984e89f4b0134

ce77d116a074dab7a22a0fd4f2c1ab475f16eec42e1ded3c0b0aa8211fe858d6

a25cadd48d70f6ea0c4a241d99c5241269e6faccb4054e62d16784640f8e53bc

d3c6785e18fba3749fb785bc313cf8346182f532c59172b69adfb31b96a5d0af

0f5d7e6dfdd62c83eb096ba193b5ae394001bac036745495674156ead6557589

6e4050c6a2d2e5e49606d96dd2922da480f2e0c70082cc7e54449a7dc0d20f8d

CORE-2019.4.5220.20574-SolarWinds-Core-v2019.4.5220-Hotfix5.msp

d0d626deb3f9484e649294a8dfa814c5568f846d5aa02d4cdad5d041a29d5600

appweblogoimagehandler.ashx.b6031896.dll

c15abaf51e78ca56c0376522d699c978217bf041a3bd3c71d09193efa5717c71

TEARDROP

b820e8a2057112d0ed73bd7995201dbed79a79e13c79d4bdad81a22f12387e07

1817a5bf9c01035bcf8a975c9f1d94b0ce7f6a200339485d8f93859f8f6d730c

RAINDROP

be9dbbec6937dfe0a652c0603d4972ba354e83c06b8397d6555fd1847da36725

This is the compromised installer file ( was still on Solarwinds update downloads on Dec 14, 2020)

File size 419.76 MB

CoreInstaller.msi

ad2fbf4add71f61173975989d1a18395afb8538ed889012b9d2e21c19e98bbd1

2020-04-21 17:31:02

SolarWinds Orion Core Services 2020.2

{77E2D294-3D5C-4D93-ADF1-884CCEAD93B0}

File Version Information

Date signed 05:32 PM 04/21/2020

Signers

Solarwinds Worldwide, LLC

Symantec Class 3 SHA256 Code Signing CA

VeriSign

VT - 0 (Dec 14, 2020)

If you unzip, check

019085a76ba7126fff22770d71bd901c325fc68ac55aa743327984e89f4b0134 (36 detections , part of the IOC set)

SolarWinds.Orion.Core.BusinessLayer.dll under OrionCore

More information

Thứ Năm, 1 tháng 6, 2023

Learning Web Pentesting With DVWA Part 3: Blind SQL Injection

In this article we are going to do the SQL Injection (Blind) challenge of DVWA.
OWASP describes Blind SQL Injection as:
"Blind SQL (Structured Query Language) injection is a type of attack that asks the database true or false questions and determines the answer based on the applications response. This attack is often used when the web application is configured to show generic error messages, but has not mitigated the code that is vulnerable to SQL injection.

When an attacker exploits SQL injection, sometimes the web application displays error messages from the database complaining that the SQL Query's syntax is incorrect. Blind SQL injection is nearly identical to normal , the only difference being the way the data is retrieved from the database. When the database does not output data to the web page, an attacker is forced to steal data by asking the database a series of true or false questions. This makes exploiting the SQL Injection vulnerability more difficult, but not impossible."

To follow along click on the SQL Injection (Blind) navigation link. You will be presented with a page like this:

Lets first try to enter a valid User ID to see what the response looks like. Enter 1 in the User ID field and click submit. The result should look like this:

Lets call this response as valid response for the ease of reference in the rest of the article. Now lets try to enter an invalid ID to see what the response for that would be. Enter something like 1337 the response would be like this:

We will call this invalid response. Since we know both the valid and invalid response, lets try to attack the app now. We will again start with a single quote (') and see the response. The response we got back is the one which we saw when we entered the wrong User ID. This indicates that our query is either invalid or incomplete. Lets try to add an or statement to our query like this:

' or 1=1-- -

This returns a valid response. Which means our query is complete and executes without errors. Lets try to figure out the size of the query output columns like we did with the sql injection before in Learning Web Pentesting With DVWA Part 2: SQL Injection.
Enter the following in the User ID field:

' or 1=1 order by 1-- -

Again we get a valid response lets increase the number to 2.

' or 1=1 order by 2-- -

We get a valid response again lets go for 3.

' or 1=1 order by 3-- -

We get an invalid response so that confirms the size of query columns (number of columns queried by the server SQL statement) is 2.
Lets try to get some data using the blind sql injection, starting by trying to figure out the version of dbms used by the server like this:

1' and substring(version(), 1,1) = 1-- -

Since we don't see any output we have to extract data character by character. Here we are trying to guess the first character of the string returned by version() function which in my case is 1. You'll notice the output returns a valid response when we enter the query above in the input field.
Lets examine the query a bit to further understand what we are trying to accomplish. We know 1 is the valid user id and it returns a valid response, we append it to the query. Following 1, we use a single quote to end the check string. After the single quote we start to build our own query with the and conditional statement which states that the answer is true if and only if both conditions are true. Since the user id 1 exists we know the first condition of the statement is true. In the second condition, we extract first character from the version() function using the substring() function and compare it with the value of 1 and then comment out the rest of server query. Since first condition is true, if the second condition is true as well we will get a valid response back otherwise we will get an invalid response. Since my the version of mariadb installed by the docker container starts with a 1 we will get a valid response. Lets see if we will get an invalid response if we compare the first character of the string returned by the version() function to 2 like this:

1' and substring(version(),1,1) = 2-- -

And we get the invalid response. To determine the second character of the string returned by the version() function, we will write our query like this:
1' and substring(version(),2,2) = 1-- -
We get invalid response. Changing 1 to 2 then 3 and so on we get invalid response back, then we try 0 and we get a valid response back indicating the second character in the string returned by the version() function is 0. Thus we have got so for 10 as the first two characters of the database version. We can try to get the third and fourth characters of the string but as you can guess it will be time consuming. So its time to automate the boring stuff. We can automate this process in two ways. One is to use our awesome programming skills to write a program that will automate this whole thing. Another way is not to reinvent the wheel and try sqlmap. I am going to show you how to use sqlmap but you can try the first method as well, as an exercise.
Lets use sqlmap to get data from the database. Enter 1 in the User ID field and click submit.
Then copy the URL from the URL bar which should look something like this
http://localhost:9000/vulnerabilities/sqli_blind/?id=1&Submit=Submit
Now open a terminal and type this command:

sqlmap --version

this will print the version of your sqlmap installation otherwise it will give an error indicating the package is not installed on your computer. If its not installed then go ahead and install it.
Now type the following command to get the names of the databases:

sqlmap -u "http://localhost:9000/vulnerabilities/sqli_blind/?id=1&Submit=Submit" --cookie="security=low; PHPSESSID=aks68qncbmtnd59q3ue7bmam30" -p id

Here replace the PHPSESSID with your session id which you can get by right clicking on the page and then clicking inspect in your browser (Firefox here). Then click on storage tab and expand cookie to get your PHPSESSID. Also your port for dvwa web app can be different so replace the URL with yours.
The command above uses -u to specify the url to be attacked, --cookie flag specifies the user authentication cookies, and -p is used to specify the parameter of the URL that we are going to attack.
We will now dump the tables of dvwa database using sqlmap like this:

sqlmap -u "http://localhost:9000/vulnerabilities/sqli_blind/?id=1&Submit=Submit" --cookie="security=low; PHPSESSID=aks68qncbmtnd59q3ue7bmam30" -p id -D dvwa --tables

After getting the list of tables its time to dump the columns of users table like this:

sqlmap -u "http://localhost:9000/vulnerabilities/sqli_blind/?id=1&Submit=Submit" --cookie="security=low; PHPSESSID=aks68qncbmtnd59q3ue7bmam30" -p id -D dvwa -T users --columns

And at last we will dump the passwords column of the users table like this:

sqlmap -u "http://localhost:9000/vulnerabilities/sqli_blind/?id=1&Submit=Submit" --cookie="security=low; PHPSESSID=aks68qncbmtnd59q3ue7bmam30" -p id -D dvwa -T users -C password --dump

Now you can see the password hashes.
As you can see automating this blind sqli using sqlmap made it simple. It would have taken us a lot of time to do this stuff manually. That's why in pentests both manual and automated testing is necessary. But its not a good idea to rely on just one of the two rather we should leverage power of both testing types to both understand and exploit the vulnerability.
By the way we could have used something like this to dump all databases and tables using this sqlmap command:

sqlmap -u "http://localhost:9000/vulnerabilities/sqli_blind/?id=1&Submit=Submit" --cookie="security=low; PHPSESSID=aks68qncbmtnd59q3ue7bmam30" -p id --dump-all

But obviously it is time and resource consuming so we only extracted what was interested to us rather than dumping all the stuff.
Also we could have used sqlmap in the simple sql injection that we did in the previous article. As an exercise redo the SQL Injection challenge using sqlmap.

References:

1. Blind SQL Injection: https://owasp.org/www-community/attacks/Blind_SQL_Injection
2. sqlmap: http://sqlmap.org/
3. MySQL SUBSTRING() Function: https://www.w3schools.com/sql/func_mysql_substring.asp

Hackerhubb.blogspot.com

Hackerhubb.blogspot.comMore info

mời bạn vào blog của tôi

Thứ Sáu, 2 tháng 6, 2023

2020-12-13 SUNBURST SolarWinds Backdoor Samples

More information

Thứ Năm, 1 tháng 6, 2023

Learning Web Pentesting With DVWA Part 3: Blind SQL Injection

References:

More articles

Hackerhubb.blogspot.com

Người theo dõi

Lưu trữ Blog

Giới thiệu về tôi