Malware Analysis Report

2024-11-13 13:50

Sample ID 240405-nzkzzaba7w
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: 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

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

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-05 11:50

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-05 11:50

Reported

2024-04-05 11:52

Platform

win10v2004-20240319-en

Max time kernel

147s

Max time network

154s

Command Line

sihost.exe

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 2568 created 2452 N/A C:\Users\Admin\AppData\Local\Temp\open.exe C:\Windows\system32\sihost.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2568 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\open.exe C:\Windows\system32\dialer.exe
PID 2568 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\open.exe C:\Windows\system32\dialer.exe
PID 2568 wrote to memory of 768 N/A C:\Users\Admin\AppData\Local\Temp\open.exe C:\Windows\system32\dialer.exe
PID 2568 wrote to memory of 768 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"

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=4140 --field-trial-handle=2228,i,8155065313278028490,17854605419281052753,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 105.136.73.23.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 11.2.37.23.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
NL 142.250.179.202:443 tcp
IE 94.245.104.56:443 tcp
GB 51.140.242.104:443 tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
GB 51.140.244.186:443 tcp
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
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.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 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 92.16.208.104.in-addr.arpa udp

Files

memory/2568-0-0x00000000001D0000-0x000000000022E000-memory.dmp

memory/2568-1-0x0000000002290000-0x00000000022A0000-memory.dmp

memory/2568-2-0x000000001AF10000-0x000000001B310000-memory.dmp

memory/2568-4-0x0000000002290000-0x00000000022A0000-memory.dmp

memory/2568-3-0x00007FFC41610000-0x00007FFC420D1000-memory.dmp

memory/2568-6-0x000000001AF10000-0x000000001B310000-memory.dmp

memory/2568-7-0x000000001AE00000-0x000000001AE10000-memory.dmp

memory/2568-9-0x000000001AF10000-0x000000001B310000-memory.dmp

memory/2568-8-0x00007FFC60F30000-0x00007FFC61125000-memory.dmp

memory/2568-10-0x00007FFC5EF80000-0x00007FFC5F03E000-memory.dmp

memory/2568-11-0x00007FFC5E930000-0x00007FFC5EBF9000-memory.dmp

memory/768-12-0x000001E9FB880000-0x000001E9FB889000-memory.dmp

memory/2568-15-0x000000001AF10000-0x000000001B310000-memory.dmp

memory/768-17-0x000001E9FD410000-0x000001E9FD810000-memory.dmp

memory/2568-18-0x00007FFC41610000-0x00007FFC420D1000-memory.dmp

memory/768-16-0x000001E9FD410000-0x000001E9FD810000-memory.dmp

memory/768-20-0x00007FFC60F30000-0x00007FFC61125000-memory.dmp

memory/768-19-0x000001E9FD410000-0x000001E9FD810000-memory.dmp

memory/768-21-0x00007FFC5EF80000-0x00007FFC5F03E000-memory.dmp

memory/768-22-0x00007FFC5E930000-0x00007FFC5EBF9000-memory.dmp

memory/768-23-0x000001E9FD410000-0x000001E9FD810000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-05 11:50

Reported

2024-04-05 11:52

Platform

win7-20240319-en

Max time kernel

118s

Max time network

121s

Command Line

C:\Windows\Explorer.EXE

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 2184 created 1308 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/2184-0-0x0000000000EC0000-0x0000000000F1E000-memory.dmp

memory/2184-1-0x000007FEF5CA0000-0x000007FEF668C000-memory.dmp

memory/2184-2-0x000000001AD80000-0x000000001AE00000-memory.dmp

memory/2184-3-0x0000000000440000-0x0000000000450000-memory.dmp

memory/2184-4-0x000000001B2E0000-0x000000001B6E0000-memory.dmp

memory/2184-7-0x000000001B2E0000-0x000000001B6E0000-memory.dmp

memory/2184-5-0x0000000000440000-0x0000000000450000-memory.dmp

memory/2184-9-0x000000001B2E0000-0x000000001B6E0000-memory.dmp

memory/2184-8-0x0000000077890000-0x0000000077A39000-memory.dmp

memory/2184-10-0x0000000077670000-0x000000007778F000-memory.dmp

memory/2184-11-0x000007FEFD700000-0x000007FEFD76C000-memory.dmp

memory/3056-12-0x0000000000060000-0x0000000000069000-memory.dmp

memory/2184-15-0x000007FEF5CA0000-0x000007FEF668C000-memory.dmp

memory/3056-17-0x0000000077890000-0x0000000077A39000-memory.dmp

memory/2184-16-0x000000001B2E0000-0x000000001B6E0000-memory.dmp

memory/3056-14-0x0000000001C30000-0x0000000002030000-memory.dmp

memory/2184-20-0x0000000077890000-0x0000000077A39000-memory.dmp

memory/3056-22-0x000007FEFD700000-0x000007FEFD76C000-memory.dmp

memory/3056-19-0x0000000077670000-0x000000007778F000-memory.dmp

memory/3056-21-0x0000000077890000-0x0000000077A39000-memory.dmp

memory/3056-18-0x0000000001C30000-0x0000000002030000-memory.dmp

memory/3056-23-0x0000000001C30000-0x0000000002030000-memory.dmp

memory/3056-24-0x0000000077890000-0x0000000077A39000-memory.dmp