Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
22/09/2023, 15:56
Static task
static1
Behavioral task
behavioral1
Sample
82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe
Resource
win10v2004-20230915-en
General
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Target
82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe
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Size
186KB
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MD5
c1f257065788ec87d854c19262f60e2d
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SHA1
d6f451114cc0a397b8e4ec8fa656ea167f1ed42d
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SHA256
82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08
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SHA512
6557a074a6e646d11b0dcb0d438ff2b819f32c47e9a0d761dcdbe973c8235702221a5b384a7b5a1c75c97f974ba51dab58d9216a3c779cc7ead436b79b8f6343
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SSDEEP
3072:mr0mAdMFyW1OA71gAeS+u2QkPK0OPCHIIpvd51QnNtz:mxAdMFyW1ORAeS+ZQkfwOIKdQ
Malware Config
Extracted
smokeloader
pub1
Extracted
smokeloader
2020
http://host-file-host6.com/
http://host-host-file8.com/
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Executes dropped EXE 2 IoCs
pid Process 4992 bfcrcbi 1808 bfcrcbi -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2224 set thread context of 972 2224 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe 92 PID 4992 set thread context of 1808 4992 bfcrcbi 99 -
Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bfcrcbi Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bfcrcbi Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bfcrcbi -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 972 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe 972 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found 3116 Process not Found -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3116 Process not Found -
Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 972 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe 1808 bfcrcbi -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 3116 Process not Found Token: SeCreatePagefilePrivilege 3116 Process not Found -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2224 wrote to memory of 972 2224 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe 92 PID 2224 wrote to memory of 972 2224 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe 92 PID 2224 wrote to memory of 972 2224 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe 92 PID 2224 wrote to memory of 972 2224 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe 92 PID 2224 wrote to memory of 972 2224 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe 92 PID 2224 wrote to memory of 972 2224 82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe 92 PID 4992 wrote to memory of 1808 4992 bfcrcbi 99 PID 4992 wrote to memory of 1808 4992 bfcrcbi 99 PID 4992 wrote to memory of 1808 4992 bfcrcbi 99 PID 4992 wrote to memory of 1808 4992 bfcrcbi 99 PID 4992 wrote to memory of 1808 4992 bfcrcbi 99 PID 4992 wrote to memory of 1808 4992 bfcrcbi 99 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe"C:\Users\Admin\AppData\Local\Temp\82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2224 -
C:\Users\Admin\AppData\Local\Temp\82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe"C:\Users\Admin\AppData\Local\Temp\82a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:972
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C:\Users\Admin\AppData\Roaming\bfcrcbiC:\Users\Admin\AppData\Roaming\bfcrcbi1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4992 -
C:\Users\Admin\AppData\Roaming\bfcrcbiC:\Users\Admin\AppData\Roaming\bfcrcbi2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1808
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
186KB
MD5c1f257065788ec87d854c19262f60e2d
SHA1d6f451114cc0a397b8e4ec8fa656ea167f1ed42d
SHA25682a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08
SHA5126557a074a6e646d11b0dcb0d438ff2b819f32c47e9a0d761dcdbe973c8235702221a5b384a7b5a1c75c97f974ba51dab58d9216a3c779cc7ead436b79b8f6343
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Filesize
186KB
MD5c1f257065788ec87d854c19262f60e2d
SHA1d6f451114cc0a397b8e4ec8fa656ea167f1ed42d
SHA25682a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08
SHA5126557a074a6e646d11b0dcb0d438ff2b819f32c47e9a0d761dcdbe973c8235702221a5b384a7b5a1c75c97f974ba51dab58d9216a3c779cc7ead436b79b8f6343
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Filesize
186KB
MD5c1f257065788ec87d854c19262f60e2d
SHA1d6f451114cc0a397b8e4ec8fa656ea167f1ed42d
SHA25682a134920474a148dffde34ac05d858980f8e2b702c9195e961b0446dbf3eb08
SHA5126557a074a6e646d11b0dcb0d438ff2b819f32c47e9a0d761dcdbe973c8235702221a5b384a7b5a1c75c97f974ba51dab58d9216a3c779cc7ead436b79b8f6343