Malware Analysis Report

2025-01-22 08:47

Sample ID 241027-ss785syfke
Target 576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N
SHA256 576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57
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

576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57

Threat Level: Shows suspicious behavior

The file 576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N 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

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-27 15:24

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 15:24

Reported

2024-10-27 15:26

Platform

win7-20240903-en

Max time kernel

110s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.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\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.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:\Users\Admin\AppData\Local\Temp\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.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\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\CTS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.exe

"C:\Users\Admin\AppData\Local\Temp\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.exe"

C:\Windows\CTS.exe

"C:\Windows\CTS.exe"

Network

N/A

Files

memory/1260-1-0x00000000008E0000-0x00000000008F7000-memory.dmp

C:\Windows\CTS.exe

MD5 5efd390d5f95c8191f5ac33c4db4b143
SHA1 42d81b118815361daa3007f1a40f1576e9a9e0bc
SHA256 6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74
SHA512 720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

memory/1260-10-0x00000000001A0000-0x00000000001B7000-memory.dmp

memory/2428-14-0x0000000000F90000-0x0000000000FA7000-memory.dmp

memory/1260-11-0x00000000008E0000-0x00000000008F7000-memory.dmp

memory/1260-5-0x00000000001A0000-0x00000000001B7000-memory.dmp

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

MD5 8da8a87c331b45d4fb959ed70e0ece8c
SHA1 16e5563d692b4b5d72f2d8fa5b82770f2e7280b2
SHA256 8f41aa0ae5a795cbd162e32baf695c8311419a93fc86f8ee0a7c028945688f18
SHA512 b4d5a706cf12dd0415507984eb48d3120a578b8daff8bbef1f71ed4b37afa1147db12b214d91fbcf1904822fe2d00044bfbf7feeb566d7f48badd872f9140dfd

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-27 15:24

Reported

2024-10-27 15:26

Platform

win10v2004-20241007-en

Max time kernel

111s

Max time network

105s

Command Line

"C:\Users\Admin\AppData\Local\Temp\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.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:\Windows\CTS.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" C:\Users\Admin\AppData\Local\Temp\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.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\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.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\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.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\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\CTS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.exe

"C:\Users\Admin\AppData\Local\Temp\576ceb4b2d88ab16a5355975d5606c96a907477a50657253f908836b96339a57N.exe"

C:\Windows\CTS.exe

"C:\Windows\CTS.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 78.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.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

Files

memory/1252-0-0x0000000000A50000-0x0000000000A67000-memory.dmp

C:\Windows\CTS.exe

MD5 5efd390d5f95c8191f5ac33c4db4b143
SHA1 42d81b118815361daa3007f1a40f1576e9a9e0bc
SHA256 6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74
SHA512 720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

memory/1252-10-0x0000000000A50000-0x0000000000A67000-memory.dmp

memory/2236-7-0x00000000008D0000-0x00000000008E7000-memory.dmp

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

MD5 500c92ef2d7dae7c02b29b63cc9cf1e8
SHA1 30a73927a8e149f11e711dbf5374fd477cceea7f
SHA256 a32267d82e81c08631de3c4f04ab9392a7bf977fc0c43f9cc90dad27f0b26ec9
SHA512 b1332234f720a9b434ef5b4665a4b42c8e4f766179b9c3eee619bc04e31c5c18fb77179864d22cb88dab0a3180bddb4fdb3d5ca85f5650a7bb774b73b600cd91

C:\Users\Admin\AppData\Local\Temp\Ms1xnPCqCcTaBRo.exe

MD5 154b0cd6ca86811fc93cce60afb2a7ce
SHA1 6da712829a4e867ad007a5623cbb51c5cfd54ed8
SHA256 a4b18600c71d5b4dba481a3b2a353b67297375fc62370434093037a898c794f7
SHA512 b19a75f12b7b0c797bcb7d2ca73b2a9dbac83a3bb69d9315a871e9dfa92b0df5cb7f17c3dd77192f661a9fda86d345afa4391d9be6b8d71b9fbe89b8af1c5389

memory/2236-32-0x00000000008D0000-0x00000000008E7000-memory.dmp