Malware Analysis Report

2024-09-11 01:53

Sample ID 230822-kxcn2abb79
Target 11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a
SHA256 11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a
Tags
medusalocker nitro persistence ransomware spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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
10/10

SHA256

11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a

Threat Level: Known bad

The file 11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a was found to be: Known bad.

Malicious Activity Summary

medusalocker nitro persistence ransomware spyware stealer

MedusaLocker payload

Medusalocker family

Nitro

Reads user/profile data of web browsers

Adds Run key to start application

Legitimate hosting services abused for malware hosting/C2

Drops desktop.ini file(s)

Looks up external IP address via web service

Sets desktop wallpaper using registry

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2023-08-22 08:58

Signatures

MedusaLocker payload

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

Medusalocker family

medusalocker

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-22 08:58

Reported

2023-08-22 09:01

Platform

win7-20230712-en

Max time kernel

122s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe"

Signatures

Nitro

ransomware nitro

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe\"" C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File opened for modification C:\Users\Admin\Documents\desktop.ini C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A
File opened for modification C:\Users\Admin\Desktop\desktop.ini C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A
File opened for modification C:\Users\Admin\Pictures\desktop.ini C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A

Legitimate hosting services abused for malware hosting/C2

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A api.ipify.org N/A N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg" C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png" C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe

"C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe"

C:\Windows\SysWOW64\cmd.exe

"cmd.exe"

C:\Windows\SysWOW64\Wbem\WMIC.exe

wmic csproduct get uuid

Network

Country Destination Domain Proto
US 8.8.8.8:53 api.ipify.org udp
US 104.237.62.211:443 api.ipify.org tcp
US 8.8.8.8:53 discord.com udp
US 162.159.136.232:443 discord.com tcp
US 162.159.136.232:443 discord.com tcp
US 162.159.136.232:443 discord.com tcp
US 162.159.136.232:443 discord.com tcp
US 162.159.136.232:443 discord.com tcp

Files

memory/2924-53-0x00000000008D0000-0x00000000008E6000-memory.dmp

memory/2924-54-0x0000000074830000-0x0000000074F1E000-memory.dmp

memory/2924-55-0x0000000004590000-0x00000000045D0000-memory.dmp

memory/2924-59-0x0000000074830000-0x0000000074F1E000-memory.dmp

memory/2924-63-0x0000000004590000-0x00000000045D0000-memory.dmp

memory/2924-142-0x0000000004590000-0x00000000045D0000-memory.dmp

memory/2924-143-0x0000000004590000-0x00000000045D0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-22 08:58

Reported

2023-08-22 09:01

Platform

win10v2004-20230703-en

Max time kernel

136s

Max time network

161s

Command Line

"C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe"

Signatures

Nitro

ransomware nitro

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe\"" C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File opened for modification C:\Users\Admin\Documents\desktop.ini C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A
File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A
File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A
File opened for modification C:\Users\Admin\Pictures\desktop.ini C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A
File opened for modification C:\Users\Admin\Desktop\desktop.ini C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A

Legitimate hosting services abused for malware hosting/C2

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A api.ipify.org N/A N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png" C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 36 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A
Token: 36 N/A C:\Windows\SysWOW64\Wbem\WMIC.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe

"C:\Users\Admin\AppData\Local\Temp\11792ee86d2847e73686ec5530b120ed9cef93393290f147336866626cd5797a.exe"

C:\Windows\SysWOW64\cmd.exe

"cmd.exe"

C:\Windows\SysWOW64\Wbem\WMIC.exe

wmic csproduct get uuid

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1608 -ip 1608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 2320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1608 -ip 1608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 2368

Network

Country Destination Domain Proto
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 126.136.241.8.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 api.ipify.org udp
US 173.231.16.76:443 api.ipify.org tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 76.16.231.173.in-addr.arpa udp
US 8.8.8.8:53 discord.com udp
US 162.159.135.232:443 discord.com tcp
US 162.159.135.232:443 discord.com tcp
US 162.159.135.232:443 discord.com tcp
US 162.159.135.232:443 discord.com tcp
US 8.8.8.8:53 232.135.159.162.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 162.159.135.232:443 discord.com tcp
US 8.8.8.8:53 89.16.208.104.in-addr.arpa udp

Files

memory/1608-133-0x0000000074DB0000-0x0000000075560000-memory.dmp

memory/1608-134-0x0000000000D90000-0x0000000000DA6000-memory.dmp

memory/1608-135-0x0000000005C40000-0x00000000061E4000-memory.dmp

memory/1608-136-0x0000000005790000-0x0000000005822000-memory.dmp

memory/1608-137-0x00000000059C0000-0x00000000059D0000-memory.dmp

memory/1608-138-0x0000000074DB0000-0x0000000075560000-memory.dmp

memory/1608-139-0x00000000059C0000-0x00000000059D0000-memory.dmp

memory/1608-250-0x0000000001530000-0x000000000153A000-memory.dmp

memory/1608-251-0x0000000074DB0000-0x0000000075560000-memory.dmp