Analysis
- max time kernel
146s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
04/04/2024, 23:13
General
- Target c4593aa7331ef905049cdc25937dcb14_JaffaCakes118.exe
- Size 2.2MB
- Sample240404-27fxwadb2v
- SHA256 a38b4029f5a2f408750ea88b1c07ca5c760a380402be50297ec4cb949813d7fb
Malware Config
Signatures
- PureLog Stealer
PureLog Stealer is an infostealer written in C#.
- PureLog Stealer payload 2 IoCs
- 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.
- Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\c4593aa7331ef905049cdc25937dcb14_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\c4593aa7331ef905049cdc25937dcb14_JaffaCakes118.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/1540-0-0x0000000000D90000-0x0000000001336000-memory.dmp
memory/1540-1-0x00000000772A4000-0x00000000772A6000-memory.dmp
memory/1540-4-0x0000000000D90000-0x0000000001336000-memory.dmp
memory/1540-3-0x0000000074010000-0x00000000747C0000-memory.dmp
memory/1540-5-0x0000000000D90000-0x0000000001336000-memory.dmp
memory/1540-6-0x00000000078D0000-0x00000000078E0000-memory.dmp
memory/1540-7-0x00000000076E0000-0x00000000076E6000-memory.dmp
memory/1540-8-0x0000000007F00000-0x0000000008518000-memory.dmp
memory/1540-9-0x00000000077B0000-0x00000000077C2000-memory.dmp
memory/1540-10-0x00000000079F0000-0x0000000007AFA000-memory.dmp
memory/1540-11-0x0000000007810000-0x000000000784C000-memory.dmp
memory/1540-12-0x0000000007870000-0x00000000078BC000-memory.dmp
memory/1540-14-0x0000000000D90000-0x0000000001336000-memory.dmp
memory/1540-16-0x0000000074010000-0x00000000747C0000-memory.dmp
memory/1540-18-0x00000000078D0000-0x00000000078E0000-memory.dmp