Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system - submitted
15/02/2024, 22:38
Static task
static1
Behavioral task
behavioral1
Sample
b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6.exe
Resource
win7-20231129-en
General
- Target b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6.exe
- Size 240KB
- Sample240215-2kefjabb89
- SHA256 b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6
- MD5 32a338d19e0ae30d5f03936bbd64a997
- SHA1 d74f6a5673fc0ae1e61042c7d6ba1d2907bc062f
- SHA512 1203ed34a31679aecd07e4ca091ee484caf919a84a0c8a31fa81b5f51df54718162ec8bb81bb5f05288b60f426f8e13a6efc596f40bf1f44bd147fe334975ce5
- SSDEEP 3072:K0WtGRxpvxGVgyAtgKro3rNebFjli/YcEokXEWrMvvxJQUTjJ6WLBGWU54yJp8bt:KRtOvcVgyyWkb5cEQZvIIJBTyr8c
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
smokeloader
-
pub3
Extracted
-
smokeloader
-
2022
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http://sjyey.com/tmp/index.php
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http://babonwo.ru/tmp/index.php
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http://mth.com.ua/tmp/index.php
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http://piratia.pw/tmp/index.php
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http://go-piratia.ru/tmp/index.php
Extracted
-
amadey
-
4.14
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http://anfesq.com
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http://cbinr.com
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http://rimakc.ru
-
install_dir
68fd3d7ade
-
install_file
Utsysc.exe
-
strings_key
27ec7fd6f50f63b8af0c1d3deefcc8fe
-
url_paths
/forum/index.php
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Downloads MZ/PE file
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation C6EA.exe Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation Utsysc.exe - Deletes itself 1 IoCs
pid Process 3396 Process not Found - Executes dropped EXE 9 IoCs
pid Process 3480 C6EA.exe 3712 C6EA.exe 3232 Utsysc.exe 1528 Utsysc.exe 5032 Utsysc.exe 1620 Utsysc.exe 4368 Utsysc.exe 4516 Utsysc.exe 872 avsatfh - Loads dropped DLL 9 IoCs
pid Process 1748 rundll32.exe 4676 rundll32.exe 232 rundll32.exe 4564 rundll32.exe 1624 rundll32.exe 2660 rundll32.exe 744 rundll32.exe 5116 rundll32.exe 4916 rundll32.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 3480 set thread context of 3712 3480 C6EA.exe 93 PID 3232 set thread context of 1528 3232 Utsysc.exe 96 PID 5032 set thread context of 1620 5032 Utsysc.exe 105 PID 4368 set thread context of 4516 4368 Utsysc.exe 118 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI avsatfh Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI avsatfh Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI avsatfh Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6.exe - Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1588 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4700 b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6.exe 4700 b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6.exe 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found 3396 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4700 b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6.exe 872 avsatfh - Suspicious use of AdjustPrivilegeToken 36 IoCs
description pid Process Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found Token: SeShutdownPrivilege 3396 Process not Found Token: SeCreatePagefilePrivilege 3396 Process not Found - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3712 C6EA.exe - Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 3396 wrote to memory of 3480 3396 Process not Found 92 PID 3396 wrote to memory of 3480 3396 Process not Found 92 PID 3396 wrote to memory of 3480 3396 Process not Found 92 PID 3480 wrote to memory of 3712 3480 C6EA.exe 93 PID 3480 wrote to memory of 3712 3480 C6EA.exe 93 PID 3480 wrote to memory of 3712 3480 C6EA.exe 93 PID 3480 wrote to memory of 3712 3480 C6EA.exe 93 PID 3480 wrote to memory of 3712 3480 C6EA.exe 93 PID 3480 wrote to memory of 3712 3480 C6EA.exe 93 PID 3480 wrote to memory of 3712 3480 C6EA.exe 93 PID 3480 wrote to memory of 3712 3480 C6EA.exe 93 PID 3480 wrote to memory of 3712 3480 C6EA.exe 93 PID 3480 wrote to memory of 3712 3480 C6EA.exe 93 PID 3712 wrote to memory of 3232 3712 C6EA.exe 95 PID 3712 wrote to memory of 3232 3712 C6EA.exe 95 PID 3712 wrote to memory of 3232 3712 C6EA.exe 95 PID 3232 wrote to memory of 1528 3232 Utsysc.exe 96 PID 3232 wrote to memory of 1528 3232 Utsysc.exe 96 PID 3232 wrote to memory of 1528 3232 Utsysc.exe 96 PID 3232 wrote to memory of 1528 3232 Utsysc.exe 96 PID 3232 wrote to memory of 1528 3232 Utsysc.exe 96 PID 3232 wrote to memory of 1528 3232 Utsysc.exe 96 PID 3232 wrote to memory of 1528 3232 Utsysc.exe 96 PID 3232 wrote to memory of 1528 3232 Utsysc.exe 96 PID 3232 wrote to memory of 1528 3232 Utsysc.exe 96 PID 3232 wrote to memory of 1528 3232 Utsysc.exe 96 PID 1528 wrote to memory of 1588 1528 Utsysc.exe 97 PID 1528 wrote to memory of 1588 1528 Utsysc.exe 97 PID 1528 wrote to memory of 1588 1528 Utsysc.exe 97 PID 1528 wrote to memory of 1748 1528 Utsysc.exe 99 PID 1528 wrote to memory of 1748 1528 Utsysc.exe 99 PID 1528 wrote to memory of 1748 1528 Utsysc.exe 99 PID 1748 wrote to memory of 4676 1748 rundll32.exe 100 PID 1748 wrote to memory of 4676 1748 rundll32.exe 100 PID 5032 wrote to memory of 1620 5032 Utsysc.exe 105 PID 5032 wrote to memory of 1620 5032 Utsysc.exe 105 PID 5032 wrote to memory of 1620 5032 Utsysc.exe 105 PID 5032 wrote to memory of 1620 5032 Utsysc.exe 105 PID 5032 wrote to memory of 1620 5032 Utsysc.exe 105 PID 5032 wrote to memory of 1620 5032 Utsysc.exe 105 PID 5032 wrote to memory of 1620 5032 Utsysc.exe 105 PID 5032 wrote to memory of 1620 5032 Utsysc.exe 105 PID 5032 wrote to memory of 1620 5032 Utsysc.exe 105 PID 5032 wrote to memory of 1620 5032 Utsysc.exe 105 PID 1528 wrote to memory of 232 1528 Utsysc.exe 106 PID 1528 wrote to memory of 232 1528 Utsysc.exe 106 PID 1528 wrote to memory of 232 1528 Utsysc.exe 106 PID 232 wrote to memory of 4564 232 rundll32.exe 107 PID 232 wrote to memory of 4564 232 rundll32.exe 107 PID 1528 wrote to memory of 1624 1528 Utsysc.exe 110 PID 1528 wrote to memory of 1624 1528 Utsysc.exe 110 PID 1528 wrote to memory of 1624 1528 Utsysc.exe 110 PID 1624 wrote to memory of 2660 1624 rundll32.exe 111 PID 1624 wrote to memory of 2660 1624 rundll32.exe 111 PID 1528 wrote to memory of 744 1528 Utsysc.exe 114 PID 1528 wrote to memory of 744 1528 Utsysc.exe 114 PID 1528 wrote to memory of 744 1528 Utsysc.exe 114 PID 1528 wrote to memory of 5116 1528 Utsysc.exe 115 PID 1528 wrote to memory of 5116 1528 Utsysc.exe 115 PID 1528 wrote to memory of 5116 1528 Utsysc.exe 115 PID 1528 wrote to memory of 4916 1528 Utsysc.exe 116 PID 1528 wrote to memory of 4916 1528 Utsysc.exe 116 PID 1528 wrote to memory of 4916 1528 Utsysc.exe 116 PID 4368 wrote to memory of 4516 4368 Utsysc.exe 118 - 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\b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6.exe"C:\Users\Admin\AppData\Local\Temp\b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4700
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C:\Users\Admin\AppData\Local\Temp\C6EA.exeC:\Users\Admin\AppData\Local\Temp\C6EA.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3480 -
C:\Users\Admin\AppData\Local\Temp\C6EA.exeC:\Users\Admin\AppData\Local\Temp\C6EA.exe2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3712 -
C:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exe"C:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3232 -
C:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exe"C:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exe"4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1528 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN Utsysc.exe /TR "C:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exe" /F5⤵
- Creates scheduled task(s)
PID:1588
-
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\2eed656dd58e95\cred64.dll, Main5⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1748 -
C:\Windows\system32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\2eed656dd58e95\cred64.dll, Main6⤵
- Loads dropped DLL
PID:4676
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\2eed656dd58e95\cred64.dll, Main5⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:232 -
C:\Windows\system32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\2eed656dd58e95\cred64.dll, Main6⤵
- Loads dropped DLL
PID:4564
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-
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\2eed656dd58e95\cred64.dll, Main5⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1624 -
C:\Windows\system32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\2eed656dd58e95\cred64.dll, Main6⤵
- Loads dropped DLL
PID:2660
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-
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\2eed656dd58e95\clip64.dll, Main5⤵
- Loads dropped DLL
PID:744
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\2eed656dd58e95\clip64.dll, Main5⤵
- Loads dropped DLL
PID:5116
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\2eed656dd58e95\clip64.dll, Main5⤵
- Loads dropped DLL
PID:4916
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-
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-
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C:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exeC:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5032 -
C:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exeC:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exe2⤵
- Executes dropped EXE
PID:1620
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C:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exeC:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4368 -
C:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exeC:\Users\Admin\AppData\Local\Temp\68fd3d7ade\Utsysc.exe2⤵
- Executes dropped EXE
PID:4516
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C:\Users\Admin\AppData\Roaming\avsatfhC:\Users\Admin\AppData\Roaming\avsatfh1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:872
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\232405761120
- Size 77KB
- SHA256 2c8ebe2d0549b2959ac4eb9a4e10a7b6d869b5a13c3707d2be6e3ca3cab50170
- MD5 7b264b20baf6ab81afebec0ce38ffe82
- SHA1 3742d63769d042611252f06c308e0a7296329ec9
- SHA512 5d6c27167ba831de88c97c6994d069678214a0399b5181d93d17a814ac5e40fb876419f43fd5259047e3339a4f444fb6add97f12fd26b5863a8174f30ea77aad
- SSDEEP 1536:sArOilAr9IHO9ktXNFOuwFtuLe3Sq9Mg4Pzo7iSMLQClnNgN3D:3Aj9ktXNgFtce3OgrHAHlne
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\C6EA.exe
- Size 389KB
- SHA256 54fe7416808922eb895d5a5b56aa62db6c404bf95d9d689e4e6d464b2f9e58b4
- MD5 57a16daebdf4113651b1d0a1af3ebf96
- SHA1 bf2dec1b7cdbe8548020f6e9c3002151fe6a20ee
- SHA512 a20f4c5e9e3f3656171201e509d80dfc61b962c141512cd05945dad0129b181cc3516b21c43a76d1a04c13208760362187e894db198ecfc81664b75f744d58b6
- SSDEEP 6144:Ar6BRRCuouMGSdv7gkQ82Kbopkt9wACb0rF/3uRxa5weoVNqqjU7w:Ar6BR8VGSxw83b0kjDC4rleRSw1N
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\2eed656dd58e95\clip64.dll
- Size 102KB
- SHA256 97e342fb4dbfe474ab2674682a816931bb9f56814bf13b20ff11ac1939775125
- MD5 4194e9b8b694b1e9b672c36f0d868e32
- SHA1 252f27fe313c7bf8e9f36aef0c7b676383872efb
- SHA512 f956acdec4c0255030f784d27210d59e30c3377e0a5abec915818bde8545afc3ef04a06395a2bfa5946f86cdf1088c9089bfc5064d9fd71b8137eae14f64e5c7
- SSDEEP 3072:SbEDxEOC3+EX4W2sosmLWuQRAwQrT7xUCYNS60Z:iM7HQ+sCWuQRYoNS60Z
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\2eed656dd58e95\cred64.dll
- Size 1.1MB
- SHA256 83ef6d2414a5c0c9cb6cfe502cb40cdda5c425ee7408a4075e32891f4599d938
- MD5 f01f5bc76b9596e0cfeab8a272cba3a5
- SHA1 19cab1291e4e518ae636f2fb3d41567e4e6e4722
- SHA512 ccfa16f0bbcdb909446fc4d47c1732e0b1baa759d78866fcce9ac7c5c12f1299e74df03b23881f3e37627b358bc6ddd2941c9110e030f6d68dd79f67c9e39f63
- SSDEEP 24576:Pc6CX/YqLAS81Un+J35XBMpZ9+Jo73Jw/tDMX/td:rqLAS81UnI5XQZ92ogO
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\avsatfh
- Size 240KB
- SHA256 b2746a96337f79494d3bfd452c5fe1f069b45b9f008a680f868e5a79021c37c6
- MD5 32a338d19e0ae30d5f03936bbd64a997
- SHA1 d74f6a5673fc0ae1e61042c7d6ba1d2907bc062f
- SHA512 1203ed34a31679aecd07e4ca091ee484caf919a84a0c8a31fa81b5f51df54718162ec8bb81bb5f05288b60f426f8e13a6efc596f40bf1f44bd147fe334975ce5
- SSDEEP 3072:K0WtGRxpvxGVgyAtgKro3rNebFjli/YcEokXEWrMvvxJQUTjJ6WLBGWU54yJp8bt:KRtOvcVgyyWkb5cEQZvIIJBTyr8c
- MD5 SHA1 SHA512 SSDEEP