Malware Analysis Report

2024-11-13 13:50

Sample ID 240405-n1dx2sbf53
Target open.exe
SHA256 4fb58687a364c3f6d6f7e0ca03654f9dec0f8832a499d61d40b0d424db1b1b14
Tags
rhadamanthys stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

4fb58687a364c3f6d6f7e0ca03654f9dec0f8832a499d61d40b0d424db1b1b14

Threat Level: Known bad

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

Malicious Activity Summary

rhadamanthys stealer

Rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Deletes itself

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-05 11:51

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-05 11:51

Reported

2024-04-05 11:54

Platform

win7-20240221-en

Max time kernel

121s

Max time network

123s

Command Line

C:\Windows\Explorer.EXE

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 2176 created 1192 N/A C:\Users\Admin\AppData\Local\Temp\open.exe C:\Windows\Explorer.EXE

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\open.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\open.exe N/A
N/A N/A C:\Windows\system32\dialer.exe N/A
N/A N/A C:\Windows\system32\dialer.exe N/A

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

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

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

C:\Windows\system32\dialer.exe

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

Network

N/A

Files

memory/2176-0-0x0000000000190000-0x00000000001EE000-memory.dmp

memory/2176-1-0x000007FEF5F20000-0x000007FEF690C000-memory.dmp

memory/2176-2-0x000000001AE90000-0x000000001AF10000-memory.dmp

memory/2176-3-0x0000000000220000-0x0000000000230000-memory.dmp

memory/2176-4-0x000000001B3F0000-0x000000001B7F0000-memory.dmp

memory/2176-6-0x000000001B3F0000-0x000000001B7F0000-memory.dmp

memory/2176-5-0x000000001B3F0000-0x000000001B7F0000-memory.dmp

memory/2176-7-0x0000000077CA0000-0x0000000077E49000-memory.dmp

memory/2176-8-0x000000001B3F0000-0x000000001B7F0000-memory.dmp

memory/2176-9-0x0000000077B80000-0x0000000077C9F000-memory.dmp

memory/2176-10-0x000007FEFDB80000-0x000007FEFDBEC000-memory.dmp

memory/2176-13-0x0000000077CA0000-0x0000000077E49000-memory.dmp

memory/2268-11-0x0000000000060000-0x0000000000069000-memory.dmp

memory/2268-14-0x0000000001C10000-0x0000000002010000-memory.dmp

memory/2176-16-0x000000001B3F0000-0x000000001B7F0000-memory.dmp

memory/2268-18-0x0000000001C10000-0x0000000002010000-memory.dmp

memory/2268-17-0x0000000077CA0000-0x0000000077E49000-memory.dmp

memory/2176-15-0x0000000000220000-0x0000000000230000-memory.dmp

memory/2268-21-0x0000000077CA0000-0x0000000077E49000-memory.dmp

memory/2176-19-0x000007FEF5F20000-0x000007FEF690C000-memory.dmp

memory/2268-20-0x0000000077B80000-0x0000000077C9F000-memory.dmp

memory/2268-22-0x000007FEFDB80000-0x000007FEFDBEC000-memory.dmp

memory/2268-23-0x0000000001C10000-0x0000000002010000-memory.dmp

memory/2268-24-0x0000000077CA0000-0x0000000077E49000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-05 11:51

Reported

2024-04-05 11:54

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

150s

Command Line

sihost.exe

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 3936 created 2868 N/A C:\Users\Admin\AppData\Local\Temp\open.exe C:\Windows\system32\sihost.exe

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\system32\dialer.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\open.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\open.exe N/A
N/A N/A C:\Windows\system32\dialer.exe N/A
N/A N/A C:\Windows\system32\dialer.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3936 wrote to memory of 468 N/A C:\Users\Admin\AppData\Local\Temp\open.exe C:\Windows\system32\dialer.exe
PID 3936 wrote to memory of 468 N/A C:\Users\Admin\AppData\Local\Temp\open.exe C:\Windows\system32\dialer.exe
PID 3936 wrote to memory of 468 N/A C:\Users\Admin\AppData\Local\Temp\open.exe C:\Windows\system32\dialer.exe
PID 3936 wrote to memory of 468 N/A C:\Users\Admin\AppData\Local\Temp\open.exe C:\Windows\system32\dialer.exe

Processes

C:\Windows\system32\sihost.exe

sihost.exe

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

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

C:\Windows\system32\dialer.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 88.136.73.23.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
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 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 81.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 121.136.73.23.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 130.136.73.23.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/3936-0-0x0000000000AD0000-0x0000000000B2E000-memory.dmp

memory/3936-1-0x0000000002B80000-0x0000000002B90000-memory.dmp

memory/3936-2-0x000000001B760000-0x000000001BB60000-memory.dmp

memory/3936-3-0x000000001B760000-0x000000001BB60000-memory.dmp

memory/3936-4-0x00007FFD93AC0000-0x00007FFD94581000-memory.dmp

memory/3936-5-0x00007FFDB19D0000-0x00007FFDB1BC5000-memory.dmp

memory/3936-9-0x000000001B760000-0x000000001BB60000-memory.dmp

memory/3936-8-0x00007FFDAF5F0000-0x00007FFDAF8B9000-memory.dmp

memory/468-10-0x0000022777300000-0x0000022777309000-memory.dmp

memory/3936-7-0x00007FFDB18D0000-0x00007FFDB198E000-memory.dmp

memory/3936-13-0x000000001B760000-0x000000001BB60000-memory.dmp

memory/3936-6-0x0000000002B80000-0x0000000002B90000-memory.dmp

memory/468-15-0x0000022778E80000-0x0000022779280000-memory.dmp

memory/3936-16-0x00007FFD93AC0000-0x00007FFD94581000-memory.dmp

memory/468-14-0x0000022778E80000-0x0000022779280000-memory.dmp

memory/468-17-0x00007FFDB19D0000-0x00007FFDB1BC5000-memory.dmp

memory/468-18-0x0000022778E80000-0x0000022779280000-memory.dmp

memory/468-19-0x00007FFDB18D0000-0x00007FFDB198E000-memory.dmp

memory/468-20-0x00007FFDAF5F0000-0x00007FFDAF8B9000-memory.dmp

memory/468-21-0x0000022778E80000-0x0000022779280000-memory.dmp