Malware Analysis Report

2024-10-10 13:33

Sample ID 240524-a341csfa7y
Target maisakura.exexx
SHA256 8fdf1b2809850293e4b76744a01e9497a4fa3cc0cadbda7c566d718762340c03
Tags
rhadamanthys stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

8fdf1b2809850293e4b76744a01e9497a4fa3cc0cadbda7c566d718762340c03

Threat Level: Known bad

The file maisakura.exexx was found to be: Known bad.

Malicious Activity Summary

rhadamanthys stealer

Rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-24 00:45

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-24 00:45

Reported

2024-05-24 00:47

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

149s

Command Line

sihost.exe

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 4856 created 2584 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\system32\sihost.exe

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1548 set thread context of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1548 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4856 wrote to memory of 3756 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 4856 wrote to memory of 3756 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 4856 wrote to memory of 3756 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 4856 wrote to memory of 3756 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 4856 wrote to memory of 3756 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe

Processes

C:\Windows\system32\sihost.exe

sihost.exe

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

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

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

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

C:\Windows\SysWOW64\dialer.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4856 -ip 4856

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 584

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4856 -ip 4856

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 600

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 201.64.52.20.in-addr.arpa udp

Files

memory/1548-0-0x000000007495E000-0x000000007495F000-memory.dmp

memory/1548-1-0x0000000000F20000-0x0000000000F82000-memory.dmp

memory/4856-4-0x0000000000400000-0x000000000046D000-memory.dmp

memory/4856-8-0x0000000000400000-0x000000000046D000-memory.dmp

memory/4856-10-0x0000000000400000-0x000000000046D000-memory.dmp

memory/1548-9-0x0000000074950000-0x0000000075100000-memory.dmp

memory/4856-13-0x0000000003B70000-0x0000000003F70000-memory.dmp

memory/4856-12-0x0000000003B70000-0x0000000003F70000-memory.dmp

memory/4856-14-0x00007FFEE98B0000-0x00007FFEE9AA5000-memory.dmp

memory/4856-15-0x0000000003B70000-0x0000000003F70000-memory.dmp

memory/3756-18-0x0000000001200000-0x0000000001209000-memory.dmp

memory/4856-17-0x00000000760E0000-0x00000000762F5000-memory.dmp

memory/3756-21-0x0000000002E40000-0x0000000003240000-memory.dmp

memory/3756-20-0x0000000002E40000-0x0000000003240000-memory.dmp

memory/4856-11-0x0000000003B70000-0x0000000003F70000-memory.dmp

memory/4856-22-0x0000000003B70000-0x0000000003F70000-memory.dmp

memory/3756-25-0x00000000760E0000-0x00000000762F5000-memory.dmp

memory/3756-23-0x00007FFEE98B0000-0x00007FFEE9AA5000-memory.dmp

memory/3756-26-0x0000000002E40000-0x0000000003240000-memory.dmp

memory/3756-27-0x0000000002E40000-0x0000000003240000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-24 00:45

Reported

2024-05-24 00:47

Platform

win7-20240221-en

Max time kernel

120s

Max time network

124s

Command Line

C:\Windows\Explorer.EXE

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 1744 created 1352 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\Explorer.EXE

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2860 set thread context of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2860 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\maisakura.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1744 wrote to memory of 2520 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 1744 wrote to memory of 2520 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 1744 wrote to memory of 2520 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 1744 wrote to memory of 2520 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 1744 wrote to memory of 2520 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 1744 wrote to memory of 2520 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

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

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

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

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

C:\Windows\SysWOW64\dialer.exe

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

Network

N/A

Files

memory/2860-0-0x000000007434E000-0x000000007434F000-memory.dmp

memory/2860-1-0x0000000000EF0000-0x0000000000F52000-memory.dmp

memory/1744-7-0x0000000000400000-0x000000000046D000-memory.dmp

memory/1744-4-0x0000000000400000-0x000000000046D000-memory.dmp

memory/1744-14-0x0000000000400000-0x000000000046D000-memory.dmp

memory/1744-11-0x0000000000400000-0x000000000046D000-memory.dmp

memory/1744-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1744-9-0x0000000000400000-0x000000000046D000-memory.dmp

memory/1744-8-0x0000000000400000-0x000000000046D000-memory.dmp

memory/1744-6-0x0000000000400000-0x000000000046D000-memory.dmp

memory/1744-5-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2860-15-0x0000000074340000-0x0000000074A2E000-memory.dmp

memory/1744-16-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2860-12-0x0000000002360000-0x0000000004360000-memory.dmp

memory/1744-17-0x00000000034A0000-0x00000000038A0000-memory.dmp

memory/1744-18-0x00000000034A0000-0x00000000038A0000-memory.dmp

memory/1744-19-0x00000000034A0000-0x00000000038A0000-memory.dmp

memory/1744-20-0x0000000077140000-0x00000000772E9000-memory.dmp

memory/1744-23-0x0000000076820000-0x0000000076867000-memory.dmp

memory/1744-24-0x0000000077141000-0x0000000077242000-memory.dmp

memory/1744-22-0x00000000034A0000-0x00000000038A0000-memory.dmp

memory/2520-25-0x0000000000100000-0x0000000000109000-memory.dmp

memory/2520-28-0x0000000077140000-0x00000000772E9000-memory.dmp

memory/2520-29-0x0000000001DC0000-0x00000000021C0000-memory.dmp

memory/1744-27-0x00000000034A0000-0x00000000038A0000-memory.dmp

memory/2520-33-0x0000000077140000-0x00000000772E9000-memory.dmp

memory/2520-32-0x0000000076820000-0x0000000076867000-memory.dmp