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Analysis
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max time kernel
150s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
31/12/2022, 22:49
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220901-en
General
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Target
file.exe
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Size
240KB
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MD5
35817a81791ad31cb6aea5d412416519
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SHA1
c1dc83a9d6bfc1be7a1fd31ad3388c0187debe5d
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SHA256
413dfa98d485fb9cf21af75dc88475fd55176fbd3f9fae020ec26fe1b095cccf
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SHA512
f31561e29b6b2a0b0289745b6ced9aa248aa58718edebdecdbfb81ad3c97741269c1976e8faf7a16add46aeee0f7610e0543f1a6c38c43d67070f9ab89af7598
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SSDEEP
3072:rX5fqyL/3/sidC9YU15Z2xcJv0R9uDC54Omqg727hZY:DRLhdC9YEuRgDMsnWZY
Malware Config
Signatures
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Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/2412-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2016-135-0x0000000002190000-0x0000000002199000-memory.dmp family_smokeloader behavioral2/memory/2412-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2412-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2572-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2572-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader -
SmokeLoader
Modular backdoor trojan in use since 2014.
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Executes dropped EXE 2 IoCs
pid Process 2552 rcaurtd 2572 rcaurtd -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2016 set thread context of 2412 2016 file.exe 81 PID 2552 set thread context of 2572 2552 rcaurtd 90 -
Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rcaurtd Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rcaurtd Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rcaurtd -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2412 file.exe 2412 file.exe 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found 2248 Process not Found -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2248 Process not Found -
Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 2412 file.exe 2572 rcaurtd -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2248 Process not Found Token: SeCreatePagefilePrivilege 2248 Process not Found -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2016 wrote to memory of 2412 2016 file.exe 81 PID 2016 wrote to memory of 2412 2016 file.exe 81 PID 2016 wrote to memory of 2412 2016 file.exe 81 PID 2016 wrote to memory of 2412 2016 file.exe 81 PID 2016 wrote to memory of 2412 2016 file.exe 81 PID 2016 wrote to memory of 2412 2016 file.exe 81 PID 2552 wrote to memory of 2572 2552 rcaurtd 90 PID 2552 wrote to memory of 2572 2552 rcaurtd 90 PID 2552 wrote to memory of 2572 2552 rcaurtd 90 PID 2552 wrote to memory of 2572 2552 rcaurtd 90 PID 2552 wrote to memory of 2572 2552 rcaurtd 90 PID 2552 wrote to memory of 2572 2552 rcaurtd 90
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2016 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2412
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C:\Users\Admin\AppData\Roaming\rcaurtdC:\Users\Admin\AppData\Roaming\rcaurtd1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2552 -
C:\Users\Admin\AppData\Roaming\rcaurtdC:\Users\Admin\AppData\Roaming\rcaurtd2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2572
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
240KB
MD535817a81791ad31cb6aea5d412416519
SHA1c1dc83a9d6bfc1be7a1fd31ad3388c0187debe5d
SHA256413dfa98d485fb9cf21af75dc88475fd55176fbd3f9fae020ec26fe1b095cccf
SHA512f31561e29b6b2a0b0289745b6ced9aa248aa58718edebdecdbfb81ad3c97741269c1976e8faf7a16add46aeee0f7610e0543f1a6c38c43d67070f9ab89af7598
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Filesize
240KB
MD535817a81791ad31cb6aea5d412416519
SHA1c1dc83a9d6bfc1be7a1fd31ad3388c0187debe5d
SHA256413dfa98d485fb9cf21af75dc88475fd55176fbd3f9fae020ec26fe1b095cccf
SHA512f31561e29b6b2a0b0289745b6ced9aa248aa58718edebdecdbfb81ad3c97741269c1976e8faf7a16add46aeee0f7610e0543f1a6c38c43d67070f9ab89af7598
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Filesize
240KB
MD535817a81791ad31cb6aea5d412416519
SHA1c1dc83a9d6bfc1be7a1fd31ad3388c0187debe5d
SHA256413dfa98d485fb9cf21af75dc88475fd55176fbd3f9fae020ec26fe1b095cccf
SHA512f31561e29b6b2a0b0289745b6ced9aa248aa58718edebdecdbfb81ad3c97741269c1976e8faf7a16add46aeee0f7610e0543f1a6c38c43d67070f9ab89af7598