Analysis
- max time kernel
96s - max time network
133s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
04/09/2024, 18:10
General
- Target USBDeviceDriver.exe
- Size 1.6MB
- Sample240904-wr4fcavanm
- SHA256 9089bccfa710cd957de9f0fd104404567761ff673e6825c0348fd32be2b17b19
Malware Config
Extracted
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stealerium
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https://discord.com/api/webhooks/1280952350231629894/1mdRkbbzR_6C99iW4uWgeL0y_HGUMMZhQ7G13dDZ5FnZ3YEBxLJWQ0E9wnPwPV33a-oK
Signatures
- Stealerium
An open source info stealer written in C# first seen in May 2022.
- Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- 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.
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs
Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 29 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\USBDeviceDriver.exe"C:\Users\Admin\AppData\Local\Temp\USBDeviceDriver.exe"1⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Wi-Fi Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\netsh.exenetsh wlan show profile3⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Wi-Fi Discovery
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C:\Windows\SysWOW64\findstr.exefindstr All3⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\netsh.exenetsh wlan show networks mode=bssid3⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 28762⤵
- Program crash
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1244 -ip 12441⤵
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
Bookmarks.txt
OneDrive.txt
Startup.txt
Videos.txt
Apps.txt
Process.txt
ProductKey.txt
memory/1244-6-0x0000000005BE0000-0x0000000005BE8000-memory.dmp
memory/1244-5-0x0000000005BB0000-0x0000000005BD6000-memory.dmp
memory/1244-9-0x0000000006C90000-0x0000000006CAE000-memory.dmp
memory/1244-7-0x0000000006C60000-0x0000000006C6A000-memory.dmp
memory/1244-62-0x00000000072D0000-0x0000000007362000-memory.dmp
memory/1244-64-0x0000000007A20000-0x0000000007FC4000-memory.dmp
memory/1244-108-0x00000000752AE000-0x00000000752AF000-memory.dmp
memory/1244-0-0x00000000752AE000-0x00000000752AF000-memory.dmp
memory/1244-155-0x00000000752A0000-0x0000000075A50000-memory.dmp
memory/1244-8-0x0000000006C70000-0x0000000006C78000-memory.dmp
memory/1244-194-0x0000000006D80000-0x0000000006DFA000-memory.dmp
memory/1244-4-0x0000000005B20000-0x0000000005BB2000-memory.dmp
memory/1244-3-0x00000000752A0000-0x0000000075A50000-memory.dmp
memory/1244-2-0x00000000055A0000-0x0000000005606000-memory.dmp
memory/1244-1-0x0000000000A70000-0x0000000000C02000-memory.dmp
memory/1244-261-0x0000000006EF0000-0x0000000006FA2000-memory.dmp
memory/1244-262-0x00000000752A0000-0x0000000075A50000-memory.dmp