Analysis Overview
SHA256
8fdf1b2809850293e4b76744a01e9497a4fa3cc0cadbda7c566d718762340c03
Threat Level: Known bad
The file maisakura.exexx was found to be: Known bad.
Malicious Activity Summary
Rhadamanthys
Suspicious use of NtCreateUserProcessOtherParentProcess
Suspicious use of SetThreadContext
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
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
Signatures
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 |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\dialer.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\dialer.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\dialer.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\dialer.exe | N/A |
Suspicious use of WriteProcessMemory
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
Signatures
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 behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\dialer.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\dialer.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\dialer.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\dialer.exe | N/A |
Suspicious use of WriteProcessMemory
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
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