Malware Analysis Report

2024-11-30 02:15

Sample ID 240326-w6tvfsha46
Target 28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1
SHA256 28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1
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

28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1

Threat Level: Known bad

The file 28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1 was found to be: Known bad.

Malicious Activity Summary

rhadamanthys stealer

Suspicious use of NtCreateUserProcessOtherParentProcess

Rhadamanthys

Suspicious use of SetThreadContext

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-26 18:32

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-26 18:32

Reported

2024-03-26 18:35

Platform

win10v2004-20240319-en

Max time kernel

148s

Max time network

155s

Command Line

sihost.exe

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 4504 created 2492 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 2480 set thread context of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2480 wrote to memory of 3312 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 3312 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 3312 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 5024 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 5024 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 5024 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 3296 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 3296 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 3296 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2480 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4504 wrote to memory of 3244 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 4504 wrote to memory of 3244 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 4504 wrote to memory of 3244 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 4504 wrote to memory of 3244 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 4504 wrote to memory of 3244 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\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe

"C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe"

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

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

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

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

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

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.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 176 -p 4504 -ip 4504

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4504 -s 588

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4504 -ip 4504

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4504 -s 608

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=5032 --field-trial-handle=2288,i,11069632825633797559,14829202121434726371,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 20.231.121.79:80 tcp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.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
GB 13.105.221.16:443 tcp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 61.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 90.65.42.20.in-addr.arpa udp

Files

memory/2480-0-0x00000000749A0000-0x0000000075150000-memory.dmp

memory/2480-1-0x0000000000960000-0x00000000009D0000-memory.dmp

memory/4504-4-0x0000000000400000-0x000000000046D000-memory.dmp

memory/4504-8-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2480-9-0x00000000749A0000-0x0000000075150000-memory.dmp

memory/2480-10-0x0000000002DB0000-0x0000000004DB0000-memory.dmp

memory/4504-11-0x0000000000400000-0x000000000046D000-memory.dmp

memory/4504-12-0x0000000003890000-0x0000000003C90000-memory.dmp

memory/4504-13-0x0000000003890000-0x0000000003C90000-memory.dmp

memory/4504-14-0x0000000003890000-0x0000000003C90000-memory.dmp

memory/4504-15-0x00007FFC64410000-0x00007FFC64605000-memory.dmp

memory/4504-17-0x0000000003890000-0x0000000003C90000-memory.dmp

memory/4504-18-0x0000000076220000-0x0000000076435000-memory.dmp

memory/3244-19-0x0000000000CD0000-0x0000000000CD9000-memory.dmp

memory/3244-21-0x00000000027F0000-0x0000000002BF0000-memory.dmp

memory/3244-22-0x00000000027F0000-0x0000000002BF0000-memory.dmp

memory/3244-23-0x00007FFC64410000-0x00007FFC64605000-memory.dmp

memory/3244-24-0x00000000027F0000-0x0000000002BF0000-memory.dmp

memory/3244-26-0x0000000076220000-0x0000000076435000-memory.dmp

memory/3244-27-0x00000000027F0000-0x0000000002BF0000-memory.dmp

memory/4504-28-0x0000000003890000-0x0000000003C90000-memory.dmp

memory/2480-29-0x0000000002DB0000-0x0000000004DB0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-26 18:32

Reported

2024-03-26 18:35

Platform

win7-20240221-en

Max time kernel

118s

Max time network

129s

Command Line

C:\Windows\Explorer.EXE

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 2504 created 1212 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 2300 set thread context of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2300 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2504 wrote to memory of 2656 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 2504 wrote to memory of 2656 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 2504 wrote to memory of 2656 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 2504 wrote to memory of 2656 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 2504 wrote to memory of 2656 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\dialer.exe
PID 2504 wrote to memory of 2656 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\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.exe

"C:\Users\Admin\AppData\Local\Temp\28fa3eeb30117a0f4db4a0b85ac98bb6c9587d7c48d0fee091522cae66564ea1.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/2300-0-0x0000000000EF0000-0x0000000000F60000-memory.dmp

memory/2300-1-0x00000000745D0000-0x0000000074CBE000-memory.dmp

memory/2504-4-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2504-5-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2300-6-0x0000000002360000-0x0000000004360000-memory.dmp

memory/2504-8-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2504-7-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2504-10-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2504-9-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2504-13-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2504-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2504-17-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2300-16-0x00000000745D0000-0x0000000074CBE000-memory.dmp

memory/2504-18-0x0000000000400000-0x000000000046D000-memory.dmp

memory/2504-19-0x00000000033C0000-0x00000000037C0000-memory.dmp

memory/2504-20-0x00000000033C0000-0x00000000037C0000-memory.dmp

memory/2504-21-0x00000000033C0000-0x00000000037C0000-memory.dmp

memory/2504-22-0x00000000773D0000-0x0000000077579000-memory.dmp

memory/2504-24-0x0000000075480000-0x00000000754C7000-memory.dmp

memory/2504-25-0x00000000033C0000-0x00000000037C0000-memory.dmp

memory/2656-26-0x0000000000080000-0x0000000000089000-memory.dmp

memory/2504-27-0x00000000033C0000-0x00000000037C0000-memory.dmp

memory/2656-29-0x0000000001DC0000-0x00000000021C0000-memory.dmp

memory/2656-30-0x0000000001DC0000-0x00000000021C0000-memory.dmp

memory/2656-31-0x00000000773D0000-0x0000000077579000-memory.dmp

memory/2656-33-0x0000000001DC0000-0x00000000021C0000-memory.dmp

memory/2656-35-0x00000000773D0000-0x0000000077579000-memory.dmp

memory/2656-34-0x0000000075480000-0x00000000754C7000-memory.dmp

memory/2656-36-0x0000000001DC0000-0x00000000021C0000-memory.dmp