Analysis
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max time kernel
119s -
max time network
122s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
09-01-2022 14:50
Static task
static1
Behavioral task
behavioral1
Sample
2145121fd426cf719e3b418108bb0215.exe
Resource
win7-en-20211208
General
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Target
2145121fd426cf719e3b418108bb0215.exe
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Size
2.7MB
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MD5
2145121fd426cf719e3b418108bb0215
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SHA1
256d36d145d164f7c97d667cc35592f27d6aa8ea
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SHA256
d36d4465c570673839d1139e66b284072a9d9f88ea7e2733c1751bd77e9afb2c
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SHA512
de0794d204e269f4b79cd42678b6c7493b94348f0388685c9759f3a762e5d8bf1d8f0eba5d3398e2d66975e98d4b7ae270c16f13d6034dcd8d7f029150765cc0
Malware Config
Extracted
cryptbot
zyodef72.top
morvue07.top
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payload_url
http://yapkbc10.top/download.php?file=luzhou.exe
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
2145121fd426cf719e3b418108bb0215.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 2145121fd426cf719e3b418108bb0215.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 2145121fd426cf719e3b418108bb0215.exe -
Deletes itself 1 IoCs
Processes:
cmd.exepid process 520 cmd.exe -
Processes:
resource yara_rule behavioral1/memory/1588-55-0x0000000000910000-0x000000000100B000-memory.dmp themida behavioral1/memory/1588-56-0x0000000000910000-0x000000000100B000-memory.dmp themida behavioral1/memory/1588-57-0x0000000000910000-0x000000000100B000-memory.dmp themida behavioral1/memory/1588-58-0x0000000000910000-0x000000000100B000-memory.dmp themida -
Processes:
2145121fd426cf719e3b418108bb0215.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 2145121fd426cf719e3b418108bb0215.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
2145121fd426cf719e3b418108bb0215.exepid process 1588 2145121fd426cf719e3b418108bb0215.exe -
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.
Processes:
2145121fd426cf719e3b418108bb0215.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 2145121fd426cf719e3b418108bb0215.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 2145121fd426cf719e3b418108bb0215.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1064 timeout.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
2145121fd426cf719e3b418108bb0215.exepid process 1588 2145121fd426cf719e3b418108bb0215.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
2145121fd426cf719e3b418108bb0215.execmd.exedescription pid process target process PID 1588 wrote to memory of 520 1588 2145121fd426cf719e3b418108bb0215.exe cmd.exe PID 1588 wrote to memory of 520 1588 2145121fd426cf719e3b418108bb0215.exe cmd.exe PID 1588 wrote to memory of 520 1588 2145121fd426cf719e3b418108bb0215.exe cmd.exe PID 1588 wrote to memory of 520 1588 2145121fd426cf719e3b418108bb0215.exe cmd.exe PID 520 wrote to memory of 1064 520 cmd.exe timeout.exe PID 520 wrote to memory of 1064 520 cmd.exe timeout.exe PID 520 wrote to memory of 1064 520 cmd.exe timeout.exe PID 520 wrote to memory of 1064 520 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2145121fd426cf719e3b418108bb0215.exe"C:\Users\Admin\AppData\Local\Temp\2145121fd426cf719e3b418108bb0215.exe"1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- 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 rd /s /q C:\Users\Admin\AppData\Local\Temp\iHvlWnPfxf & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\2145121fd426cf719e3b418108bb0215.exe"2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 43⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/520-59-0x0000000000000000-mapping.dmp
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memory/1064-60-0x0000000000000000-mapping.dmp
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memory/1588-54-0x0000000076151000-0x0000000076153000-memory.dmpFilesize
8KB
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memory/1588-55-0x0000000000910000-0x000000000100B000-memory.dmpFilesize
7.0MB
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memory/1588-56-0x0000000000910000-0x000000000100B000-memory.dmpFilesize
7.0MB
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memory/1588-57-0x0000000000910000-0x000000000100B000-memory.dmpFilesize
7.0MB
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memory/1588-58-0x0000000000910000-0x000000000100B000-memory.dmpFilesize
7.0MB