Analysis
- max time kernel
25s - max time network
151s - platform
windows10_x64 - resource
win10v20210408 - submitted
15/06/2021, 08:47
Static task
static1
Behavioral task
behavioral1
Sample
12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe
Resource
win7v20210408
0 signatures
0 seconds
General
- Target 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe
- Size 712KB
- Sample210615-7r81bc1a3a
- SHA256 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98d857eb33251b6f357fe
- MD5 000385ebbd5e91d09746b2de4af54ad4
- SHA1 4c20b44df5e55711d0faaf34d081a66098bd9843
- SHA512 2ec796a49456d4b950bcf6808e24c5564b12debdea49b4b551dc93c7fabe3cd6fc4679cff28c6f5542cebed3b91c4fa31b49196e5a55ebaf0eb42c082594f6d3
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
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cryptbot
C2
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kiykci22.top
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morhap02.top
Attributes
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payload_url
http://peouts02.top/download.php?file=lv.exe
Signatures
- CryptBot Payload 2 IoCs
resource yara_rule behavioral2/memory/580-114-0x0000000002AB0000-0x0000000002B91000-memory.dmp family_cryptbot behavioral2/memory/580-115-0x0000000000400000-0x0000000000C7A000-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.
- 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.
- 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.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe - Delays execution with timeout.exe 1 IoCs
pid Process 2576 timeout.exe - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 580 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe 580 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 580 wrote to memory of 2164 580 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe 78 PID 580 wrote to memory of 2164 580 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe 78 PID 580 wrote to memory of 2164 580 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe 78 PID 580 wrote to memory of 3872 580 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe 80 PID 580 wrote to memory of 3872 580 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe 80 PID 580 wrote to memory of 3872 580 12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe 80 PID 3872 wrote to memory of 2576 3872 cmd.exe 82 PID 3872 wrote to memory of 2576 3872 cmd.exe 82 PID 3872 wrote to memory of 2576 3872 cmd.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe"C:\Users\Admin\AppData\Local\Temp\12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe"1⤵
- Checks processor information in registry
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:580 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\ZZIeXQLh.exe"2⤵PID:2164
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\lbchgESbwfssX & timeout 3 & del /f /q "C:\Users\Admin\AppData\Local\Temp\12dcd1bdd0cae0600249bccca37eb78756f4bec7b9e98.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:3872 -
C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:2576
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