Malware Analysis Report

2025-08-05 10:00

Sample ID 240403-x7myzaag93
Target 25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66
SHA256 25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66
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

25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66

Threat Level: Shows suspicious behavior

The file 25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66 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

2024-04-03 19:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-03 19:29

Reported

2024-04-03 19:32

Platform

win7-20240221-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\zEHsvgHi8NzTGu6.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\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.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\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.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\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\CTS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.exe

"C:\Users\Admin\AppData\Local\Temp\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.exe"

C:\Users\Admin\AppData\Local\Temp\zEHsvgHi8NzTGu6.exe

C:\Users\Admin\AppData\Local\Temp\zEHsvgHi8NzTGu6.exe

C:\Windows\CTS.exe

"C:\Windows\CTS.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\zEHsvgHi8NzTGu6.exe

MD5 abbd49c180a2f8703f6306d6fa731fdc
SHA1 d63f4bfe7f74936b2fbace803e3da6103fbf6586
SHA256 5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1
SHA512 290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

C:\Windows\CTS.exe

MD5 66df4ffab62e674af2e75b163563fc0b
SHA1 dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA512 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

memory/2980-15-0x0000000000400000-0x000000000040D000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\zEHsvgHi8NzTGu6.exe

MD5 c7572251e167a0f9798fb7671be00b82
SHA1 b2dee87ff7c95887def2d6d798bffb6ca8d0114b
SHA256 ec774ee624f0f708be405e419bfbbfe57311a6a67a837014e10d91b306ed3404
SHA512 35b9f1f263821e6fe0ed50531384dc26e24b5bff66436b29f752c4b0049414ddaa3dccf8d9f84a1dfe8324c9d4d4bd73d661eb146774d03e7d926b98c340b4f2

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-03 19:29

Reported

2024-04-03 19:32

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\q8hnreN8HYDi1Ym.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\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.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\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\CTS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.exe

"C:\Users\Admin\AppData\Local\Temp\25389f99c8da6503e094dac9215eb5f71d868e3df51b41aa37149c57ef973d66.exe"

C:\Users\Admin\AppData\Local\Temp\q8hnreN8HYDi1Ym.exe

C:\Users\Admin\AppData\Local\Temp\q8hnreN8HYDi1Ym.exe

C:\Windows\CTS.exe

"C:\Windows\CTS.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 98.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 35.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 210.108.222.173.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 100.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 6.173.189.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\q8hnreN8HYDi1Ym.exe

MD5 abbd49c180a2f8703f6306d6fa731fdc
SHA1 d63f4bfe7f74936b2fbace803e3da6103fbf6586
SHA256 5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1
SHA512 290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

C:\Windows\CTS.exe

MD5 66df4ffab62e674af2e75b163563fc0b
SHA1 dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA512 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

memory/3812-8-0x0000000000400000-0x000000000040D000-memory.dmp

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

MD5 4e9af261ec59b19993c7632ac239c866
SHA1 1f67f97062aa8fe8fbd4733ca8bfe016b6987020
SHA256 083195240ea335e8825cc6429431c3635a41fd97a96dbf7d8b23fd1921c327b1
SHA512 4baf0ce5f7e4991331c69af061818aabb2224c45fc7111c40db44e12c44f316ffb882832f220b53f140314a984adcf831e267505cf4b7f6deb3718126d437d5c