Analysis
- max time kernel
148s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
18/12/2024, 14:05
General
- Target 830c7205f281af8e8be936566c40d1a5.exe
- Size 1.8MB
- Sample241218-rdvtts1pew
- SHA256 343b51b34ac69ba9e09927634079bb0632509d3a2d9bafdba15d75a8f05b98ec
Malware Config
Extracted
-
lumma
Extracted
-
stealc
-
stok
-
http://185.215.113.206
-
url_path
/c4becf79229cb002.php
Signatures
- Lumma Stealer, LummaC
Lumma or LummaC is an infostealer written in C++ first seen in August 2022.
- Lumma family
- Modifies Windows Defender Real-time Protection settings 3 TTPs 6 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Stealc family
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
- Downloads MZ/PE file
- Checks BIOS information in registry 2 TTPs 6 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Executes dropped EXE 2 IoCs
- Identifies Wine through registry keys 2 TTPs 3 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Windows security modification 2 TTPs 2 IoCs
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 12 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\830c7205f281af8e8be936566c40d1a5.exe"C:\Users\Admin\AppData\Local\Temp\830c7205f281af8e8be936566c40d1a5.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\QX02RRJI5M6M3F6D51L8AN97X0.exe"C:\Users\Admin\AppData\Local\Temp\QX02RRJI5M6M3F6D51L8AN97X0.exe"2⤵
- Modifies Windows Defender Real-time Protection settings
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Windows security modification
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\7FLWXTGAA8O09J0U.exe"C:\Users\Admin\AppData\Local\Temp\7FLWXTGAA8O09J0U.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Defense Evasion
Impair Defenses
2Disable or Modify Tools
2Modify Registry
2Virtualization/Sandbox Evasion
2Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
3Credentials In Files
3Replay Monitor
Loading Replay Monitor...
Downloads
7FLWXTGAA8O09J0U.exe
QX02RRJI5M6M3F6D51L8AN97X0.exe
memory/928-20-0x0000000000BF0000-0x00000000010E7000-memory.dmp
memory/928-17-0x0000000000BF0000-0x00000000010E7000-memory.dmp
memory/2624-12-0x0000000000E10000-0x0000000001280000-memory.dmp
memory/2624-25-0x0000000000E10000-0x0000000001280000-memory.dmp
memory/2624-21-0x0000000000E10000-0x0000000001280000-memory.dmp
memory/2624-10-0x0000000000E10000-0x0000000001280000-memory.dmp
memory/2624-11-0x0000000000E10000-0x0000000001280000-memory.dmp
memory/3720-4-0x0000000000480000-0x000000000092B000-memory.dmp
memory/3720-5-0x0000000000480000-0x000000000092B000-memory.dmp
memory/3720-0-0x0000000000480000-0x000000000092B000-memory.dmp
memory/3720-18-0x0000000000480000-0x000000000092B000-memory.dmp
memory/3720-3-0x00007FFA32290000-0x00007FFA32485000-memory.dmp
memory/3720-2-0x0000000000480000-0x000000000092B000-memory.dmp
memory/3720-1-0x00007FFA32290000-0x00007FFA32485000-memory.dmp