Analysis
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max time kernel
35s -
max time network
40s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
14/05/2021, 01:23
Static task
static1
Behavioral task
behavioral1
Sample
a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe
Resource
win7v20210410
0 signatures
0 seconds
General
Malware Config
Extracted
Family
cryptbot
C2
remdvz22.top
morjgs02.top
Attributes
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payload_url
http://sulsxq03.top/download.php?file=lv.exe
Signatures
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CryptBot Payload 2 IoCs
resource yara_rule behavioral2/memory/740-115-0x0000000000400000-0x00000000004E5000-memory.dmp family_cryptbot behavioral2/memory/740-114-0x00000000023B0000-0x0000000002491000-memory.dmp family_cryptbot -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 1416 timeout.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 740 a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe 740 a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 740 wrote to memory of 776 740 a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe 78 PID 740 wrote to memory of 776 740 a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe 78 PID 740 wrote to memory of 776 740 a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe 78 PID 776 wrote to memory of 1416 776 cmd.exe 80 PID 776 wrote to memory of 1416 776 cmd.exe 80 PID 776 wrote to memory of 1416 776 cmd.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe"C:\Users\Admin\AppData\Local\Temp\a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe"1⤵
- Checks processor information in registry
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:740 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\WZVgnyfPoLqw & timeout 3 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a5c463db805e356cb6e73e5676b397eab265e061c6797e27b626b8b4aee892a3.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:776 -
C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:1416
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