Malware Analysis Report

2024-11-15 06:03

Sample ID 240926-2a1k1s1bpj
Target App_Installer.exe
SHA256 4bdbf8c72c59d5d804c4f3e128f1326a00c7df5822d341988737f5b74ccfefa2
Tags
rhadamanthys discovery 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

4bdbf8c72c59d5d804c4f3e128f1326a00c7df5822d341988737f5b74ccfefa2

Threat Level: Known bad

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

Malicious Activity Summary

rhadamanthys discovery stealer

Rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Legitimate hosting services abused for malware hosting/C2

Drops file in System32 directory

Suspicious use of SetThreadContext

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-26 22:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-26 22:23

Reported

2024-09-26 22:25

Platform

win7-20240903-en

Max time kernel

38s

Max time network

22s

Command Line

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

Signatures

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\system32\NOTEPAD.EXE N/A

Processes

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

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

C:\Windows\system32\NOTEPAD.EXE

"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\ur a fucking loser faggot.txt

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-26 22:23

Reported

2024-09-26 22:25

Platform

win10v2004-20240802-en

Max time kernel

63s

Max time network

67s

Command Line

sihost.exe

Signatures

Rhadamanthys

stealer rhadamanthys

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 4648 created 2968 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\system32\sihost.exe

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A bitbucket.org N/A N/A
N/A bitbucket.org N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\temp.000 C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
File opened for modification C:\Windows\SysWOW64\shell32.dll C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2836 set thread context of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\openwith.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2836 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2836 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2836 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2836 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2836 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2836 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2836 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2836 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2836 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2836 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\App_Installer.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 4648 wrote to memory of 2420 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\SysWOW64\openwith.exe
PID 4648 wrote to memory of 2420 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\SysWOW64\openwith.exe
PID 4648 wrote to memory of 2420 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\SysWOW64\openwith.exe
PID 4648 wrote to memory of 2420 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\SysWOW64\openwith.exe
PID 4648 wrote to memory of 2420 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Windows\SysWOW64\openwith.exe

Processes

C:\Windows\system32\sihost.exe

sihost.exe

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

"C:\Users\Admin\AppData\Local\Temp\App_Installer.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 --field-trial-handle=1028,i,12470628711992022444,7767535593390851522,262144 --variations-seed-version --mojo-platform-channel-handle=4080 /prefetch:8

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

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

C:\Windows\SysWOW64\openwith.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4648 -ip 4648

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4648 -s 432

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4648 -ip 4648

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4648 -s 464

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 bitbucket.org udp
IE 185.166.142.21:443 bitbucket.org tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 98.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 21.142.166.185.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/4648-6-0x0000000000400000-0x000000000047E000-memory.dmp

memory/4648-7-0x0000000000400000-0x000000000047E000-memory.dmp

memory/4648-8-0x0000000000400000-0x000000000047E000-memory.dmp

memory/4648-9-0x0000000000400000-0x000000000047E000-memory.dmp

memory/4648-11-0x0000000003AE0000-0x0000000003EE0000-memory.dmp

memory/4648-10-0x0000000003AE0000-0x0000000003EE0000-memory.dmp

memory/4648-12-0x0000000003AE0000-0x0000000003EE0000-memory.dmp

memory/4648-14-0x0000000003AE0000-0x0000000003EE0000-memory.dmp

memory/4648-13-0x00007FFEB4890000-0x00007FFEB4A85000-memory.dmp

memory/4648-16-0x0000000075A50000-0x0000000075C65000-memory.dmp

memory/2420-17-0x0000000000B60000-0x0000000000B69000-memory.dmp

memory/2420-20-0x00007FFEB4890000-0x00007FFEB4A85000-memory.dmp

memory/2420-19-0x00000000029C0000-0x0000000002DC0000-memory.dmp

memory/2420-22-0x0000000075A50000-0x0000000075C65000-memory.dmp

memory/4648-23-0x0000000003AE0000-0x0000000003EE0000-memory.dmp