Malware Analysis Report

2024-11-15 06:34

Sample ID 240613-egqm3atcne
Target 2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware
SHA256 3b362a61193dddcab3f3d7c7d150108b7fcb027a689560cefbffa11d40c478f7
Tags
persistence spyware stealer
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

3b362a61193dddcab3f3d7c7d150108b7fcb027a689560cefbffa11d40c478f7

Threat Level: Shows suspicious behavior

The file 2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence spyware stealer

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of web browsers

Adds Run key to start application

Drops file in Windows directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 03:54

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 03:54

Reported

2024-06-13 03:57

Platform

win7-20240221-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\E90L1zMdjxUq8h7.exe N/A
N/A N/A C:\Windows\CTS.exe N/A
N/A N/A N/A N/A

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" C:\Windows\CTS.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\CTS.exe C:\Windows\CTS.exe N/A
File created C:\Windows\CTS.exe C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\CTS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe"

C:\Users\Admin\AppData\Local\Temp\E90L1zMdjxUq8h7.exe

C:\Users\Admin\AppData\Local\Temp\E90L1zMdjxUq8h7.exe

C:\Windows\CTS.exe

"C:\Windows\CTS.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\E90L1zMdjxUq8h7.exe

MD5 abbd49c180a2f8703f6306d6fa731fdc
SHA1 d63f4bfe7f74936b2fbace803e3da6103fbf6586
SHA256 5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1
SHA512 290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

C:\Windows\CTS.exe

MD5 66df4ffab62e674af2e75b163563fc0b
SHA1 dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA512 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

memory/2256-15-0x0000000000400000-0x000000000040D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 03:54

Reported

2024-06-13 03:57

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\COKEZpDUUJb1I3F.exe N/A
N/A N/A C:\Windows\CTS.exe N/A

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" C:\Windows\CTS.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\CTS.exe C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe N/A
File created C:\Windows\CTS.exe C:\Windows\CTS.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\CTS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_fae16e4b6c2754512cd232f6ec1311be_bkransomware.exe"

C:\Users\Admin\AppData\Local\Temp\COKEZpDUUJb1I3F.exe

C:\Users\Admin\AppData\Local\Temp\COKEZpDUUJb1I3F.exe

C:\Windows\CTS.exe

"C:\Windows\CTS.exe"

Network

Files

C:\Users\Admin\AppData\Local\Temp\COKEZpDUUJb1I3F.exe

MD5 abbd49c180a2f8703f6306d6fa731fdc
SHA1 d63f4bfe7f74936b2fbace803e3da6103fbf6586
SHA256 5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1
SHA512 290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

C:\Windows\CTS.exe

MD5 66df4ffab62e674af2e75b163563fc0b
SHA1 dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA512 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

memory/1224-8-0x0000000000400000-0x000000000040D000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

MD5 d7db552f3b735605769344828927c283
SHA1 3ecedb24c1e893b5288abe0de24c9582b7c07602
SHA256 06a86a5e1faad9b3335fdc6a2923922e3dd859294739daeb8562baf07f9fb9a2
SHA512 eaf915b3782acbd4ab940bc687e3fb1bddad30c272077d3adbc7f15b9770ab141da64d6605a6e14baa8db84d1b7a63e5d451a058e2ad9a664a3caeb50318d6af