Analysis
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max time kernel
139s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
22-04-2024 16:53
Static task
static1
Behavioral task
behavioral1
Sample
fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
Resource
win10v2004-20240412-en
General
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Target
fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
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Size
329KB
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MD5
5fc6f24d43bc7ca45a81d159291955d1
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SHA1
72fc3ce96bd9406215cec015d70bbb67318f1e23
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SHA256
fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934
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SHA512
b39488cfaec3bbe93fc4b22f92edfc3b2b729e6f75a472d722418b259fc9c74faae60f5126384dc242ba1b42300e60428c7c530982550625cd59e1684f7c9380
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SSDEEP
6144:8OZsdXcUIAoUKjiXeZtna8UtDpiyeMTHSN+5qm:8OZQXcDkLuTa8UtteCHP
Malware Config
Extracted
smokeloader
1106
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Loads dropped DLL 1 IoCs
pid Process 3412 fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4340 set thread context of 3412 4340 fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe 86 -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4340 wrote to memory of 3412 4340 fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe 86 PID 4340 wrote to memory of 3412 4340 fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe 86 PID 4340 wrote to memory of 3412 4340 fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe 86 PID 4340 wrote to memory of 3412 4340 fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe 86 PID 4340 wrote to memory of 3412 4340 fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe 86 PID 4340 wrote to memory of 3412 4340 fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4340 -
C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"2⤵
- Loads dropped DLL
- Checks SCSI registry key(s)
PID:3412
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"1⤵PID:924
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD54f3387277ccbd6d1f21ac5c07fe4ca68
SHA1e16506f662dc92023bf82def1d621497c8ab5890
SHA256767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA5129da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219