xorium_stealer | 13b39c4c9c2b6f9341907803680d928cb6b820d0a7cf51c51791e3502bf71e2c

General

Target
Stealerv371.exe
Size 292KB
Sample260706-ltj5dahs8k
SHA256 13b39c4c9c2b6f9341907803680d928cb6b820d0a7cf51c51791e3502bf71e2c
MD5 8ce6c8956a5d14788da99fe5396eddc6
SHA1 8a0816b5f75046599ed55fc2f98b851ef825a028
SHA512 ac397b96b024cf3cdadebb1798d2afb05a74f2a3120e29a7fb674939c9125aad61e2879ad3b8ab52c914562b443b03a77291adcfca8284f1936e577b36b5aaec
SSDEEP 3072:H9+Fa9m3L3aI3FXIkdkFq0+n3r3StLBUL3w3EUCiuj50AfySFirKohsnWPzDXf/c:HQx3F7d773StNkOuQrKonrLA42Hrz
TLSH
T140545A9437F81A19F2BF8B39F87461144BB6F427A916D31E1D8668DD2A32750EE00B73
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

collection discovery xorium_stealer persistence privilege_escalation spyware stealer

Malware Config

Extracted

Family

xorium_stealer

C2

https://api.telegram.org/bot8411431993:AAEfSmY06vKocYc98OuqgKAVox4ZvamireQ/sendDocument

Attributes

user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36

Signatures

Family: XoriumStealer
XoriumStealer is an information stealer written in C#.
stealer xorium_stealer

Detects XoriumStealer payload 1 IoCs

resource	yara_rule
behavioral2/memory/5980-1-0x0000028CB0AA0000-0x0000028CB0AEC000-memory.dmp	family_xorium_stealer

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1797646245-3139070211-3019596475-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Stealerv371.exe
Key opened	\REGISTRY\USER\S-1-5-21-1797646245-3139070211-3019596475-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Stealerv371.exe
Key opened	\REGISTRY\USER\S-1-5-21-1797646245-3139070211-3019596475-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Stealerv371.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	icanhazip.com
1	ip-api.com

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 1 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
5032	netsh.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Stealerv371.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Stealerv371.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5980	Stealerv371.exe
5980	Stealerv371.exe
5980	Stealerv371.exe
5980	Stealerv371.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5980	Stealerv371.exe
Token: SeDebugPrivilege	5980	Stealerv371.exe
Token: SeDebugPrivilege	5980	Stealerv371.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5980 wrote to memory of 5216	5980	Stealerv371.exe	89
PID 5980 wrote to memory of 5032	5980	Stealerv371.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1797646245-3139070211-3019596475-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Stealerv371.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1797646245-3139070211-3019596475-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Stealerv371.exe

C:\Users\Admin\AppData\Local\Temp\Stealerv371.exe
"C:\Users\Admin\AppData\Local\Temp\Stealerv371.exe"
1⤵
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:5980
- C:\Windows\SYSTEM32\netsh.exe
  "netsh" wlan export profile key=clear folder="C:\Users\Admin\AppData\Local\Temp\IntelixWifiExport_f52e1bb3641e428a975d861cda1bdffa"
  2⤵
  - Event Triggered Execution: Netsh Helper DLL
  PID:5216
- C:\Windows\SYSTEM32\netsh.exe
  "netsh" wlan show profiles
  2⤵
  - Event Triggered Execution: Netsh Helper DLL
  - System Network Configuration Discovery: Wi-Fi Discovery
  PID:5032