Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
18/12/2024, 19:55
General
- Target cedd75f3a781795bab964212a7e781e1.exe
- Size 1.8MB
- Sample241218-ym477azlat
- SHA256 3a7fac7bd67e9b5e65ba91e95a49df1ca38d64be20f24342efb7cd29e22b4aec
Malware Config
Extracted
-
lumma
Extracted
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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\cedd75f3a781795bab964212a7e781e1.exe"C:\Users\Admin\AppData\Local\Temp\cedd75f3a781795bab964212a7e781e1.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\Q25L44DMFHW8HLP7XJ688E.exe"C:\Users\Admin\AppData\Local\Temp\Q25L44DMFHW8HLP7XJ688E.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\X2IMN8HOCGXZGRJYSX6J3ESOXTC19KI.exe"C:\Users\Admin\AppData\Local\Temp\X2IMN8HOCGXZGRJYSX6J3ESOXTC19KI.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
Q25L44DMFHW8HLP7XJ688E.exe
X2IMN8HOCGXZGRJYSX6J3ESOXTC19KI.exe
memory/772-29-0x0000000000320000-0x0000000000830000-memory.dmp
memory/772-24-0x0000000000320000-0x0000000000830000-memory.dmp
memory/1356-5-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/1356-2-0x00000000007F1000-0x0000000000816000-memory.dmp
memory/1356-6-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/1356-7-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/1356-8-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/1356-9-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/1356-4-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/1356-1-0x0000000077254000-0x0000000077256000-memory.dmp
memory/1356-26-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/1356-0-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/1356-17-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/1356-18-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/1356-3-0x00000000007F0000-0x0000000000C91000-memory.dmp
memory/3408-16-0x0000000000B90000-0x0000000000FF0000-memory.dmp
memory/3408-23-0x0000000000B90000-0x0000000000FF0000-memory.dmp
memory/3408-15-0x0000000000B90000-0x0000000000FF0000-memory.dmp
memory/3408-14-0x0000000000B90000-0x0000000000FF0000-memory.dmp
memory/3408-32-0x0000000000B90000-0x0000000000FF0000-memory.dmp