Analysis
- max time kernel
72s - max time network
123s - platform
windows10_x64 - resource
win10-en-20211014 - submitted
20/10/2021, 23:33
General
- Target BF2042.exe
- Size 4.9MB
- Sample211020-3jva2ahff3
- SHA256 6dbd32bc93ae550752cb2f00a9b7d9a2e0d7146dcaa0b5a9b93a1351f93cc419
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 1 IoCs
Detects Themida, an advanced Windows software protection system.
- 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
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\BF2042.exe"C:\Users\Admin\AppData\Local\Temp\BF2042.exe"1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1916-117-0x0000000077660000-0x00000000777EE000-memory.dmp
memory/1916-118-0x0000000000C10000-0x0000000000C11000-memory.dmp
memory/1916-120-0x00000000060C0000-0x00000000060C1000-memory.dmp
memory/1916-121-0x0000000003980000-0x0000000003981000-memory.dmp
memory/1916-122-0x0000000005BC0000-0x0000000005BC1000-memory.dmp
memory/1916-123-0x0000000005AF0000-0x0000000005AF1000-memory.dmp
memory/1916-124-0x0000000005AB0000-0x00000000060B6000-memory.dmp
memory/1916-125-0x0000000005B30000-0x0000000005B31000-memory.dmp
memory/1916-126-0x0000000007060000-0x0000000007061000-memory.dmp
memory/1916-127-0x0000000007760000-0x0000000007761000-memory.dmp
memory/1916-128-0x0000000006FF0000-0x0000000006FF1000-memory.dmp
memory/1916-129-0x0000000008190000-0x0000000008191000-memory.dmp
memory/1916-130-0x0000000007430000-0x0000000007431000-memory.dmp
memory/1916-131-0x0000000007550000-0x0000000007551000-memory.dmp
memory/1916-132-0x00000000076F0000-0x00000000076F1000-memory.dmp
memory/1916-133-0x0000000007E70000-0x0000000007E71000-memory.dmp