Malware Analysis Report

2024-11-15 06:02

Sample ID 240923-ekdsnswajf
Target InstallerKms.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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

9f18caf887db4cccec90f1d018538b77fd5b6e2f7bcaaecbd66fee016f98e10d

Threat Level: Known bad

The file InstallerKms.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

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-23 03:59

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-23 03:59

Reported

2024-09-23 04:02

Platform

win10v2004-20240802-en

Max time kernel

95s

Max time network

124s

Command Line

sihost.exe

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 2252 created 2588 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.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\InstallerKms.exe N/A
File created C:\Windows\SysWOW64\temp.000 C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3180 set thread context of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.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\InstallerKms.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\openwith.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3180 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 3180 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 3180 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 3180 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 3180 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 3180 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 3180 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 3180 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 3180 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 3180 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\InstallerKms.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2252 wrote to memory of 4916 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\SysWOW64\openwith.exe
PID 2252 wrote to memory of 4916 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\SysWOW64\openwith.exe
PID 2252 wrote to memory of 4916 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\SysWOW64\openwith.exe
PID 2252 wrote to memory of 4916 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\SysWOW64\openwith.exe
PID 2252 wrote to memory of 4916 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\SysWOW64\openwith.exe

Processes

C:\Windows\system32\sihost.exe

sihost.exe

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

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

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

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.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 2252 -ip 2252

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2252 -s 432

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2252 -ip 2252

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2252 -s 428

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.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 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 23.142.166.185.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/2252-6-0x0000000000400000-0x000000000047E000-memory.dmp

memory/2252-8-0x0000000000400000-0x000000000047E000-memory.dmp

memory/2252-7-0x0000000000400000-0x000000000047E000-memory.dmp

memory/2252-9-0x0000000000400000-0x000000000047E000-memory.dmp

memory/2252-11-0x0000000003A60000-0x0000000003E60000-memory.dmp

memory/2252-10-0x0000000003A60000-0x0000000003E60000-memory.dmp

memory/2252-12-0x0000000003A60000-0x0000000003E60000-memory.dmp

memory/2252-14-0x0000000003A60000-0x0000000003E60000-memory.dmp

memory/2252-13-0x00007FFEDF1B0000-0x00007FFEDF3A5000-memory.dmp

memory/4916-17-0x0000000000F60000-0x0000000000F69000-memory.dmp

memory/2252-16-0x00000000760B0000-0x00000000762C5000-memory.dmp

memory/4916-20-0x0000000000F60000-0x0000000000F69000-memory.dmp

memory/4916-19-0x0000000002E30000-0x0000000003230000-memory.dmp

memory/4916-21-0x00007FFEDF1B0000-0x00007FFEDF3A5000-memory.dmp

memory/4916-23-0x00000000760B0000-0x00000000762C5000-memory.dmp

memory/2252-24-0x0000000003A60000-0x0000000003E60000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-23 03:59

Reported

2024-09-23 04:02

Platform

win7-20240903-en

Max time kernel

119s

Max time network

121s

Command Line

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

Signatures

N/A

Processes

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

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

Network

N/A

Files

N/A