Malware Analysis Report

2024-11-15 06:03

Sample ID 240922-rtgbdatgkp
Target Installer_Kms.exe
SHA256 9f18caf887db4cccec90f1d018538b77fd5b6e2f7bcaaecbd66fee016f98e10d
Tags
rhadamanthys discovery stealer
score
10/10

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
10/10

SHA256

9f18caf887db4cccec90f1d018538b77fd5b6e2f7bcaaecbd66fee016f98e10d

Threat Level: Known bad

The file Installer_Kms.exe was found to be: Known bad.

Malicious Activity Summary

rhadamanthys discovery stealer

Rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Legitimate hosting services abused for malware hosting/C2

Drops file in System32 directory

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-22 14:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-22 14:28

Reported

2024-09-22 14:33

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

98s

Command Line

sihost.exe

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 1788 created 2452 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\system32\sihost.exe

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A bitbucket.org N/A N/A
N/A bitbucket.org N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\shell32.dll C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
File created C:\Windows\SysWOW64\temp.000 C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2508 set thread context of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\openwith.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2508 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2508 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2508 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2508 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2508 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2508 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2508 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2508 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2508 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2508 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1788 wrote to memory of 2212 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\openwith.exe
PID 1788 wrote to memory of 2212 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\openwith.exe
PID 1788 wrote to memory of 2212 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\openwith.exe
PID 1788 wrote to memory of 2212 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\openwith.exe
PID 1788 wrote to memory of 2212 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\openwith.exe

Processes

C:\Windows\system32\sihost.exe

sihost.exe

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

"C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"

C:\Windows\SysWOW64\openwith.exe

"C:\Windows\system32\openwith.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1788 -ip 1788

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1788 -s 432

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1788 -ip 1788

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1788 -s 420

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 bitbucket.org udp
IE 185.166.142.23:443 bitbucket.org tcp
US 8.8.8.8:53 42.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 23.142.166.185.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 44.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/1788-6-0x0000000000400000-0x000000000047E000-memory.dmp

memory/1788-8-0x0000000000400000-0x000000000047E000-memory.dmp

memory/1788-7-0x0000000000400000-0x000000000047E000-memory.dmp

memory/1788-9-0x0000000000400000-0x000000000047E000-memory.dmp

memory/1788-10-0x0000000003CD0000-0x00000000040D0000-memory.dmp

memory/1788-11-0x0000000003CD0000-0x00000000040D0000-memory.dmp

memory/1788-12-0x0000000003CD0000-0x00000000040D0000-memory.dmp

memory/1788-14-0x0000000003CD0000-0x00000000040D0000-memory.dmp

memory/1788-13-0x00007FFF7A690000-0x00007FFF7A885000-memory.dmp

memory/2212-17-0x00000000008F0000-0x00000000008F9000-memory.dmp

memory/1788-16-0x0000000076690000-0x00000000768A5000-memory.dmp

memory/2212-19-0x00000000025E0000-0x00000000029E0000-memory.dmp

memory/2212-20-0x00007FFF7A690000-0x00007FFF7A885000-memory.dmp

memory/2212-22-0x0000000076690000-0x00000000768A5000-memory.dmp

memory/1788-23-0x0000000003CD0000-0x00000000040D0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-22 14:28

Reported

2024-09-22 14:33

Platform

win11-20240802-en

Max time kernel

90s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe"

Signatures

Rhadamanthys

stealer rhadamanthys

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A bitbucket.org N/A N/A
N/A bitbucket.org N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\temp.000 C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
File opened for modification C:\Windows\SysWOW64\shell32.dll C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1388 set thread context of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

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\Installer_Kms.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1388 wrote to memory of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1388 wrote to memory of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1388 wrote to memory of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1388 wrote to memory of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1388 wrote to memory of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1388 wrote to memory of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1388 wrote to memory of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1388 wrote to memory of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1388 wrote to memory of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1388 wrote to memory of 4492 N/A C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

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

"C:\Users\Admin\AppData\Local\Temp\Installer_Kms.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4492 -ip 4492

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4492 -s 412

Network

Country Destination Domain Proto
US 8.8.8.8:53 bitbucket.org udp
IE 185.166.142.22:443 bitbucket.org tcp
US 8.8.8.8:53 22.142.166.185.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp

Files

memory/4492-8-0x0000000000400000-0x000000000047E000-memory.dmp

memory/4492-9-0x0000000000400000-0x000000000047E000-memory.dmp

memory/4492-12-0x0000000000400000-0x000000000047E000-memory.dmp

memory/4492-10-0x0000000000400000-0x000000000047E000-memory.dmp