Analysis
- max time kernel
91s - max time network
130s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
22/09/2024, 09:23
General
- Target f1bb608fc3469071c9e53176a8ed4b1c_JaffaCakes118.exe
- Size 4.7MB
- Sample240922-lcqktssdrf
- SHA256 954f8c802c2dff2bcd7712c2a7a89b1f566eb76d347a7f9cb3b4a2a21832dd45
Malware Config
Signatures
- Taurus Stealer
Taurus is an infostealer first seen in June 2020.
- Taurus Stealer payload 6 IoCs
- Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 8 IoCs
Detects Themida, an advanced Windows software protection system.
- Accesses 2FA software files, 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.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 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.
- Delays execution with timeout.exe 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\f1bb608fc3469071c9e53176a8ed4b1c_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\f1bb608fc3469071c9e53176a8ed4b1c_JaffaCakes118.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe/c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\f1bb608fc3469071c9e53176a8ed4b1c_JaffaCakes118.exe2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout /t 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
3Credentials In Files
2Credentials in Registry
1Replay Monitor
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Downloads
memory/4292-0-0x0000000000250000-0x0000000000BF2000-memory.dmp
memory/4292-3-0x0000000000250000-0x0000000000BF2000-memory.dmp
memory/4292-6-0x0000000077374000-0x0000000077376000-memory.dmp
memory/4292-7-0x0000000000250000-0x0000000000BF2000-memory.dmp
memory/4292-10-0x0000000000250000-0x0000000000BF2000-memory.dmp
memory/4292-8-0x0000000000250000-0x0000000000BF2000-memory.dmp
memory/4292-9-0x0000000000250000-0x0000000000BF2000-memory.dmp
memory/4292-11-0x0000000000250000-0x0000000000BF2000-memory.dmp
memory/4292-13-0x0000000000250000-0x0000000000BF2000-memory.dmp