Analysis
- max time kernel
115s - max time network
140s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
- submitted
17/10/2022, 09:07
General
- Target file.exe
- Size 3.2MB
- Sample221017-k3a3dsbdgj
- SHA256 6ed5e19aac6c1cf5f1d2cd08f1db7fec2f1455fc79a9ddaa7cc45a8ce43a9fbe
Malware Config
Extracted
-
vidar
-
55
-
1679
-
http://138.201.90.120:80
-
profile_id
1679
Signatures
- Vidar
Vidar is an infostealer based on Arkei stealer.
- 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.
- Loads dropped DLL 2 IoCs
- 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
- 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.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
memory/1500-61-0x0000000000A70000-0x0000000001398000-memory.dmp
memory/1500-57-0x0000000000A70000-0x0000000001398000-memory.dmp
memory/1500-58-0x0000000000A70000-0x0000000001398000-memory.dmp
memory/1500-59-0x0000000000A70000-0x0000000001398000-memory.dmp
memory/1500-54-0x0000000075B41000-0x0000000075B43000-memory.dmp
memory/1500-63-0x00000000778D0000-0x0000000077A50000-memory.dmp
memory/1500-62-0x0000000000A70000-0x0000000001398000-memory.dmp
memory/1500-64-0x0000000000A70000-0x0000000001398000-memory.dmp
memory/1500-65-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1500-56-0x0000000000A70000-0x0000000001398000-memory.dmp
memory/1500-55-0x0000000000A70000-0x0000000001398000-memory.dmp