Analysis
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max time kernel
119s -
max time network
119s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
26-12-2021 16:15
Static task
static1
Behavioral task
behavioral1
Sample
file(3).exe
Resource
win7-en-20211208
General
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Target
file(3).exe
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Size
2.6MB
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MD5
ce0aa3844956e370576fac306fadb2e0
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SHA1
bce852a9d235d82f7e176e0c2eb705d93b20e8e1
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SHA256
dbc94d25f9cb7839460ed68929538f1a953919dbf08b849e549d953499ecded7
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SHA512
0c3ca3441e2ed0fdb38c94734e13ab78dc664fd9a1d5ea886fb0c5d97b93af7d191a1af2560da48e853d16929b139903f4566c2aec51e8b825f3c7735ce71930
Malware Config
Extracted
cryptbot
daipey72.top
morboh07.top
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:
file(3).exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion file(3).exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion file(3).exe -
Deletes itself 1 IoCs
Processes:
cmd.exepid process 1028 cmd.exe -
Processes:
resource yara_rule behavioral1/memory/600-55-0x00000000008A0000-0x0000000000F80000-memory.dmp themida behavioral1/memory/600-56-0x00000000008A0000-0x0000000000F80000-memory.dmp themida behavioral1/memory/600-58-0x00000000008A0000-0x0000000000F80000-memory.dmp themida behavioral1/memory/600-57-0x00000000008A0000-0x0000000000F80000-memory.dmp themida -
Processes:
file(3).exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA file(3).exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
file(3).exepid process 600 file(3).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:
file(3).exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 file(3).exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString file(3).exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 544 timeout.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
file(3).exepid process 600 file(3).exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
file(3).execmd.exedescription pid process target process PID 600 wrote to memory of 1028 600 file(3).exe cmd.exe PID 600 wrote to memory of 1028 600 file(3).exe cmd.exe PID 600 wrote to memory of 1028 600 file(3).exe cmd.exe PID 600 wrote to memory of 1028 600 file(3).exe cmd.exe PID 1028 wrote to memory of 544 1028 cmd.exe timeout.exe PID 1028 wrote to memory of 544 1028 cmd.exe timeout.exe PID 1028 wrote to memory of 544 1028 cmd.exe timeout.exe PID 1028 wrote to memory of 544 1028 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file(3).exe"C:\Users\Admin\AppData\Local\Temp\file(3).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\kgnFsmbMoAZA & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file(3).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/544-60-0x0000000000000000-mapping.dmp
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memory/600-54-0x0000000076151000-0x0000000076153000-memory.dmpFilesize
8KB
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memory/600-55-0x00000000008A0000-0x0000000000F80000-memory.dmpFilesize
6.9MB
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memory/600-56-0x00000000008A0000-0x0000000000F80000-memory.dmpFilesize
6.9MB
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memory/600-58-0x00000000008A0000-0x0000000000F80000-memory.dmpFilesize
6.9MB
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memory/600-57-0x00000000008A0000-0x0000000000F80000-memory.dmpFilesize
6.9MB
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memory/1028-59-0x0000000000000000-mapping.dmp