Malware Analysis Report

2024-12-07 03:04

Sample ID 241113-xzn63a1mcm
Target 04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a
SHA256 04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a
Tags
discovery persistence spyware stealer
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a

Threat Level: Shows suspicious behavior

The file 04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery persistence spyware stealer

Reads user/profile data of web browsers

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 19:17

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 19:17

Reported

2024-11-13 19:20

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
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\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.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\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe N/A
File created C:\Windows\CTS.exe C:\Windows\CTS.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\CTS.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\CTS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe

"C:\Users\Admin\AppData\Local\Temp\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe"

C:\Windows\CTS.exe

"C:\Windows\CTS.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

C:\Windows\CTS.exe

MD5 0f736d30fbdaebed364c4cd9f084e500
SHA1 d7e96b736463af4b3edacd5cc5525cb70c593334
SHA256 431b7f30b7f8d520f69066b03b8dccbb35a6cb40a53c5e2320c6b5acf96b2e34
SHA512 570a2f76d653414fedc12ed486f2bf0333dc860f52d70faa895d6b9951ac185317637d7b076e05c932f4c536259e19a952a716e9516d506d2a19de73c50f2566

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

MD5 924f132559795b66e20a4a3b862a7558
SHA1 cbd64e2d63bfbe7dce70d50360c2e98fa49789b7
SHA256 5340697b6ace6647a3a5d04bfb8e8acb2266433ebc59a6a130006cd63bb2670a
SHA512 7e60d3701b47a89d9e73cad83e99dcc0ac1ccb334931243209e9adda80e67500041b94593edcd3990f27af8da253215f703c19b42d36b1b05378eceae5a77c22

C:\Users\Admin\AppData\Local\Temp\OkOqEo6k31yuAYo.exe

MD5 5cce892bfe1943094d2d866a284defea
SHA1 b5f7210b27f01500425834b067fad2d63c57811b
SHA256 c15f4492b0df686cce025b10d7e58fe9f04be12e0b9f50090f2bfaaf4465cc46
SHA512 22e6549782d306519fa19f54bc2f67b57d27571ed7ef13a2bee9e5fa34a887b62058c728add287d0bcb22734407ec85122cbbfa71ff7cc3873286ae2ce24d3b1

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 19:17

Reported

2024-11-13 19:20

Platform

win7-20240903-en

Max time kernel

120s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
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\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.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\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe N/A
File created C:\Windows\CTS.exe C:\Windows\CTS.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\CTS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe

"C:\Users\Admin\AppData\Local\Temp\04ca0910136a3fd10928c27b6b16c08e3230e17671db3ef9969e8d9717fdda3a.exe"

C:\Windows\CTS.exe

"C:\Windows\CTS.exe"

Network

N/A

Files

C:\Windows\CTS.exe

MD5 0f736d30fbdaebed364c4cd9f084e500
SHA1 d7e96b736463af4b3edacd5cc5525cb70c593334
SHA256 431b7f30b7f8d520f69066b03b8dccbb35a6cb40a53c5e2320c6b5acf96b2e34
SHA512 570a2f76d653414fedc12ed486f2bf0333dc860f52d70faa895d6b9951ac185317637d7b076e05c932f4c536259e19a952a716e9516d506d2a19de73c50f2566

C:\Users\Admin\AppData\Local\Temp\RPwlOt3kcj1Pwdd.exe

MD5 7fdae0eb7ad754e94e4a42be2b372870
SHA1 0e6877a78c252037692f3182447b5484d64fe48b
SHA256 6477b1b36fff4b5243c7f0f7de5a12011398e1a7c3404ad4ca321ad21ee376ea
SHA512 187f945df914f7169f1c195102a3217294e678033549ee988ed86ad9fd49fc5ee1e557e324f9065b869f8ccc729fe730bbd2702aad85d7d234bb435f86920fe1