Malware Analysis Report

2025-01-22 08:55

Sample ID 241027-qja6yavrdr
Target 5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N
SHA256 5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391
Tags
upx discovery 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

5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391

Threat Level: Shows suspicious behavior

The file 5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx discovery persistence spyware stealer

Executes dropped EXE

Reads user/profile data of web browsers

Adds Run key to start application

UPX packed file

Drops file in Windows directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-27 13:16

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-27 13:16

Reported

2024-10-27 13:19

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.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\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.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

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.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\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\CTS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.exe

"C:\Users\Admin\AppData\Local\Temp\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.exe"

C:\Windows\CTS.exe

"C:\Windows\CTS.exe"

Network

N/A

Files

memory/2256-0-0x0000000000DE0000-0x0000000000DF7000-memory.dmp

C:\Windows\CTS.exe

MD5 93e5f18caebd8d4a2c893e40e5f38232
SHA1 fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6
SHA256 a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8
SHA512 986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

memory/1800-12-0x0000000000350000-0x0000000000367000-memory.dmp

memory/2256-9-0x0000000000DE0000-0x0000000000DF7000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Ivo0qLo10MvVO5w.exe

MD5 0232ecd39229cd505f535ba8d788e013
SHA1 b75821e44bc402b0011b045ebeb180b63269e074
SHA256 8a52f761704fd8cf6a8c7bea60334dbeb76f40670cf145e1a1dd797f8f39ea66
SHA512 caf2b3b299dd9f6c90aa6c30256901c7bf6a0d244c8198ef10ae4419218d42281b22ce4e913058bc6935ee306d4761a42fa88c75aa93e5bd178f0887f4b48e9a

memory/1800-16-0x0000000000350000-0x0000000000367000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-27 13:16

Reported

2024-10-27 13:19

Platform

win10v2004-20241007-en

Max time kernel

111s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.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\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.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

UPX packed file

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

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\CTS.exe C:\Users\Admin\AppData\Local\Temp\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.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\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.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\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\CTS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.exe

"C:\Users\Admin\AppData\Local\Temp\5544194117a2fe75ea1144d52af26f7d6491014506f3abb2bfe5fb0589d87391N.exe"

C:\Windows\CTS.exe

"C:\Windows\CTS.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 69.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/1968-0-0x0000000000520000-0x0000000000537000-memory.dmp

C:\Windows\CTS.exe

MD5 93e5f18caebd8d4a2c893e40e5f38232
SHA1 fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6
SHA256 a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8
SHA512 986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

memory/1968-10-0x0000000000520000-0x0000000000537000-memory.dmp

memory/4756-7-0x0000000000460000-0x0000000000477000-memory.dmp

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

MD5 67549b7a6affb9610d7e915d17f11b7b
SHA1 3598feddcd77c373aae010be163b1d2ee1e3dcf0
SHA256 3879cd188c33cabc0b5aef3f22ade09d0108aebc0103ee6b3e778532edf1c79d
SHA512 cea44916b9079386c19d7f9caf2a9989a9c9f942f97cf592860f910709d23db4e3ba171a2359c26a050ac068f8bcdacadf93098d1cdb2a31e8775cd75e4fda56

C:\Users\Admin\AppData\Local\Temp\lBNzgek9mT4gwuq.exe

MD5 ec408fa5654c32483945a91ca34cadca
SHA1 efbe9ba16068f3f0741fdf8110a8453ca279ffe2
SHA256 79b5eb7b235be99955a7b7f941eafffe36160def7cd95849f04a698dc6c3a169
SHA512 6ba870ff9d6177a8a60dd8a95785313b5b5dc13d12e6a58b5fe87233d24ff3df3dd21e024dc52ab56f103d43ae78ca5001dfb5aaeb0c570ee154d4c2a29dcf36

memory/4756-33-0x0000000000460000-0x0000000000477000-memory.dmp