Analysis
- max time kernel
139s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
19/11/2022, 01:36
General
- Target 4488e2e5a11c0c872a2047ab9429f953aa9f2e209fbd2.exe
- Size 7.0MB
- Sample221119-bz9bcage83
- SHA256 4488e2e5a11c0c872a2047ab9429f953aa9f2e209fbd2390f8a4a280e0aaead5
Malware Config
Extracted
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cryptbot
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http://yawtil52.top/gate.php
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payload_url
http://sectow07.top/turbeh.dat
Signatures
- CryptBot
A C++ stealer distributed widely in bundle with other software.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
- Executes dropped EXE 2 IoCs
- Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 16 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 2 IoCs
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 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 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\4488e2e5a11c0c872a2047ab9429f953aa9f2e209fbd2.exe"C:\Users\Admin\AppData\Local\Temp\4488e2e5a11c0c872a2047ab9429f953aa9f2e209fbd2.exe"1⤵
- Checks computer location settings
- Maps connected drives based on registry
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c C:\Users\Admin\AppData\Roaming\A3A745C525E8A0AD\turbeh.exe2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\A3A745C525E8A0AD\turbeh.exeC:\Users\Admin\AppData\Roaming\A3A745C525E8A0AD\turbeh.exe3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe"C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe"4⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: AddClipboardFormatListener
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-
-
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout -t 5 && del "C:\Users\Admin\AppData\Local\Temp\4488e2e5a11c0c872a2047ab9429f953aa9f2e209fbd2.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout -t 53⤵
- Delays execution with timeout.exe
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
turbeh.exe
turbeh.exe
DpEditor.exe
DpEditor.exe
memory/3616-157-0x00000000773C0000-0x0000000077563000-memory.dmp
memory/3616-160-0x0000000000380000-0x0000000000A7A000-memory.dmp
memory/3616-159-0x0000000000380000-0x0000000000A7A000-memory.dmp
memory/3616-158-0x0000000000380000-0x0000000000A7A000-memory.dmp
memory/3616-156-0x0000000000380000-0x0000000000A7A000-memory.dmp
memory/3616-155-0x0000000000380000-0x0000000000A7A000-memory.dmp
memory/3616-154-0x0000000000380000-0x0000000000A7A000-memory.dmp
memory/3616-161-0x00000000773C0000-0x0000000077563000-memory.dmp
memory/4464-140-0x00000000002C0000-0x0000000000E03000-memory.dmp
memory/4464-132-0x00000000002C0000-0x0000000000E03000-memory.dmp
memory/4464-135-0x00000000002C0000-0x0000000000E03000-memory.dmp
memory/5048-148-0x0000000000580000-0x0000000000C7A000-memory.dmp
memory/5048-147-0x0000000000580000-0x0000000000C7A000-memory.dmp
memory/5048-152-0x0000000000580000-0x0000000000C7A000-memory.dmp
memory/5048-153-0x00000000773C0000-0x0000000077563000-memory.dmp
memory/5048-145-0x0000000000580000-0x0000000000C7A000-memory.dmp
memory/5048-144-0x0000000000580000-0x0000000000C7A000-memory.dmp
memory/5048-146-0x00000000773C0000-0x0000000077563000-memory.dmp
memory/5048-143-0x0000000000580000-0x0000000000C7A000-memory.dmp