Analysis
- max time kernel
148s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
07/07/2022, 21:39
General
- Target 43d43cae0a7432a80a3ea1f12b6d134ee9814a46dbe8d5d7556f6d50f0a1506f.exe
- Size 4.0MB
- Sample220707-1hta8sehf8
- SHA256 43d43cae0a7432a80a3ea1f12b6d134ee9814a46dbe8d5d7556f6d50f0a1506f
Malware Config
Extracted
-
cryptbot
-
briybc32.top
Signatures
- CryptBot
A C++ stealer distributed widely in bundle with other software.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- 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\43d43cae0a7432a80a3ea1f12b6d134ee9814a46dbe8d5d7556f6d50f0a1506f.exe"C:\Users\Admin\AppData\Local\Temp\43d43cae0a7432a80a3ea1f12b6d134ee9814a46dbe8d5d7556f6d50f0a1506f.exe"1⤵
- 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
memory/3400-130-0x0000000000400000-0x0000000000D52000-memory.dmp
memory/3400-131-0x0000000000400000-0x0000000000D52000-memory.dmp
memory/3400-133-0x0000000002EB0000-0x0000000002EF1000-memory.dmp
memory/3400-132-0x0000000000400000-0x0000000000D52000-memory.dmp
memory/3400-134-0x0000000000400000-0x0000000000D52000-memory.dmp
memory/3400-135-0x0000000000400000-0x0000000000D52000-memory.dmp
memory/3400-136-0x0000000000400000-0x0000000000D52000-memory.dmp
memory/3400-137-0x0000000003010000-0x0000000003057000-memory.dmp
memory/3400-143-0x0000000000400000-0x0000000000D52000-memory.dmp
memory/3400-144-0x0000000002EB0000-0x0000000002EF1000-memory.dmp