Malware Analysis Report

2024-11-13 13:53

Sample ID 240917-edwpxashrg
Target da3ef6613f3b3a7ae9d7b7583c8f71d4
SHA256 7e349519630ee5375d6dd2671aa8137fd91cd03b05c453450ce66e13f84e3419
Tags
rhadamanthys discovery persistence stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

7e349519630ee5375d6dd2671aa8137fd91cd03b05c453450ce66e13f84e3419

Threat Level: Known bad

The file da3ef6613f3b3a7ae9d7b7583c8f71d4 was found to be: Known bad.

Malicious Activity Summary

rhadamanthys discovery persistence stealer

Rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Adds Run key to start application

Suspicious use of NtCreateThreadExHideFromDebugger

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-17 03:50

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-17 03:50

Reported

2024-09-17 03:52

Platform

win7-20240903-en

Max time kernel

117s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\da3ef6613f3b3a7ae9d7b7583c8f71d4.dll,#1

Signatures

Rhadamanthys

stealer rhadamanthys

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\*ChromeUpdate = "rundll32.exe C:\\Users\\Admin\\Documents\\FirefoxData.dll,EntryPoint" C:\Windows\SysWOW64\reg.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1288 wrote to memory of 2076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1288 wrote to memory of 2076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1288 wrote to memory of 2076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1288 wrote to memory of 2076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1288 wrote to memory of 2076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1288 wrote to memory of 2076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1288 wrote to memory of 2076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2076 wrote to memory of 2528 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2076 wrote to memory of 2528 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2076 wrote to memory of 2528 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2076 wrote to memory of 2528 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2076 wrote to memory of 2528 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2076 wrote to memory of 2528 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2076 wrote to memory of 2528 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2076 wrote to memory of 2528 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2076 wrote to memory of 2528 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2076 wrote to memory of 2528 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2528 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2528 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2528 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2528 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2076 wrote to memory of 2720 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2076 wrote to memory of 2720 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2076 wrote to memory of 2720 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2076 wrote to memory of 2720 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2720 wrote to memory of 2716 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2720 wrote to memory of 2716 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2720 wrote to memory of 2716 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2720 wrote to memory of 2716 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\da3ef6613f3b3a7ae9d7b7583c8f71d4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\da3ef6613f3b3a7ae9d7b7583c8f71d4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\SysWOW64\rundll32.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2528 -s 196

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f & exit

C:\Windows\SysWOW64\reg.exe

reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f

Network

N/A

Files

memory/2076-1-0x000000001000C000-0x0000000010025000-memory.dmp

memory/2076-0-0x0000000010000000-0x0000000010636000-memory.dmp

memory/2076-2-0x0000000010000000-0x0000000010636000-memory.dmp

memory/2528-13-0x0000000000110000-0x000000000018E000-memory.dmp

memory/2528-14-0x0000000000110000-0x000000000018E000-memory.dmp

memory/2528-16-0x0000000000110000-0x000000000018E000-memory.dmp

memory/2076-12-0x0000000010000000-0x0000000010636000-memory.dmp

memory/2076-17-0x0000000010000000-0x0000000010636000-memory.dmp

memory/2076-10-0x0000000010000000-0x0000000010636000-memory.dmp

memory/2528-8-0x0000000000190000-0x0000000000191000-memory.dmp

memory/2528-7-0x0000000000190000-0x0000000000191000-memory.dmp

memory/2528-5-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2528-3-0x0000000000110000-0x000000000018E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-17 03:50

Reported

2024-09-17 03:52

Platform

win10v2004-20240802-en

Max time kernel

96s

Max time network

134s

Command Line

sihost.exe

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 3968 created 2452 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\system32\sihost.exe

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\*ChromeUpdate = "rundll32.exe C:\\Users\\Admin\\Documents\\FirefoxData.dll,EntryPoint" C:\Windows\SysWOW64\reg.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\openwith.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\openwith.exe N/A
N/A N/A C:\Windows\SysWOW64\openwith.exe N/A
N/A N/A C:\Windows\SysWOW64\openwith.exe N/A
N/A N/A C:\Windows\SysWOW64\openwith.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 524 wrote to memory of 1712 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 524 wrote to memory of 1712 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 524 wrote to memory of 1712 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1712 wrote to memory of 3968 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1712 wrote to memory of 3968 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1712 wrote to memory of 3968 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1712 wrote to memory of 3968 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1712 wrote to memory of 3968 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1712 wrote to memory of 3968 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1712 wrote to memory of 2244 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1712 wrote to memory of 2244 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1712 wrote to memory of 2244 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2244 wrote to memory of 4156 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2244 wrote to memory of 4156 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2244 wrote to memory of 4156 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 3968 wrote to memory of 5048 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\openwith.exe
PID 3968 wrote to memory of 5048 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\openwith.exe
PID 3968 wrote to memory of 5048 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\openwith.exe
PID 3968 wrote to memory of 5048 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\openwith.exe
PID 3968 wrote to memory of 5048 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\openwith.exe

Processes

C:\Windows\system32\sihost.exe

sihost.exe

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\da3ef6613f3b3a7ae9d7b7583c8f71d4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\da3ef6613f3b3a7ae9d7b7583c8f71d4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\SysWOW64\rundll32.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f & exit

C:\Windows\SysWOW64\reg.exe

reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f

C:\Windows\SysWOW64\openwith.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3968 -ip 3968

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3968 -s 592

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3968 -ip 3968

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3968 -s 588

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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/1712-1-0x000000001000C000-0x0000000010025000-memory.dmp

memory/1712-0-0x0000000010000000-0x0000000010636000-memory.dmp

memory/1712-3-0x0000000010000000-0x0000000010636000-memory.dmp

memory/3968-4-0x0000000000950000-0x0000000000951000-memory.dmp

memory/1712-8-0x0000000010000000-0x0000000010636000-memory.dmp

memory/3968-10-0x00000000008D0000-0x000000000094E000-memory.dmp

memory/3968-9-0x00000000008D0000-0x000000000094E000-memory.dmp

memory/1712-7-0x0000000010000000-0x0000000010636000-memory.dmp

memory/1712-6-0x0000000010000000-0x0000000010636000-memory.dmp

memory/1712-2-0x0000000010000000-0x0000000010636000-memory.dmp

memory/3968-11-0x00000000008D0000-0x000000000094E000-memory.dmp

memory/1712-12-0x00000000105D2000-0x00000000105D9000-memory.dmp

memory/1712-13-0x000000001000C000-0x0000000010025000-memory.dmp

memory/3968-14-0x00000000039C0000-0x0000000003DC0000-memory.dmp

memory/3968-15-0x00000000039C0000-0x0000000003DC0000-memory.dmp

memory/3968-16-0x00000000039C0000-0x0000000003DC0000-memory.dmp

memory/3968-20-0x00000000039C0000-0x0000000003DC0000-memory.dmp

memory/3968-19-0x00000000763A0000-0x00000000765B5000-memory.dmp

memory/3968-17-0x00007FFBE4C90000-0x00007FFBE4E85000-memory.dmp

memory/5048-21-0x00000000004E0000-0x00000000004E9000-memory.dmp

memory/5048-24-0x00000000020F0000-0x00000000024F0000-memory.dmp

memory/5048-23-0x00000000020F0000-0x00000000024F0000-memory.dmp

memory/5048-25-0x00007FFBE4C90000-0x00007FFBE4E85000-memory.dmp

memory/5048-28-0x00000000763A0000-0x00000000765B5000-memory.dmp

memory/5048-27-0x00000000020F0000-0x00000000024F0000-memory.dmp

memory/5048-29-0x00000000020F0000-0x00000000024F0000-memory.dmp

memory/3968-31-0x00000000039C0000-0x0000000003DC0000-memory.dmp