Analysis
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max time kernel
151s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
16/07/2023, 21:58
Static task
static1
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20230703-en
General
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Target
tmp.exe
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Size
703KB
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MD5
a8a27695f1bc25512354f2c6b5e9d037
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SHA1
d39c5146f3560a6d55657eaa384a8794e25c97ad
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SHA256
4365ff3c93ee1faa413ab7cf6838884c449053479d3039e995a6cdfe590125e4
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SHA512
58e1eb8588514730e5727c684839f35e45390c429e52514d8394d607a332cc8b3be7a733f3dbc856c696d55607d1073289c8dca2d0bc30d1c46de640c262a913
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SSDEEP
12288:/fyw2ahjxbe1SORR84Rl7hChlA4aEISAe43v:/6NanbivDChdrnXm
Malware Config
Extracted
smokeloader
2022
http://cletonmy.com/
http://alpatrik.com/
Signatures
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Checks QEMU agent file 2 TTPs 3 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
description ioc Process File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe tmp.exe File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe tmp.exe File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe fguhvri -
Executes dropped EXE 1 IoCs
pid Process 1272 fguhvri -
Loads dropped DLL 3 IoCs
pid Process 4748 tmp.exe 1272 fguhvri 4736 fguhvri -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
pid Process 5112 tmp.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
pid Process 4748 tmp.exe 5112 tmp.exe 1272 fguhvri -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4748 set thread context of 5112 4748 tmp.exe 94 PID 1272 set thread context of 4736 1272 fguhvri 104 -
Drops file in Program Files directory 2 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Common Files\sansningerne.Unc tmp.exe File opened for modification C:\Program Files (x86)\Common Files\sansningerne.Unc fguhvri -
Drops file in Windows directory 4 IoCs
description ioc Process File opened for modification C:\Windows\resources\0409\Hovedgaarde.For tmp.exe File opened for modification C:\Windows\resources\0409\Katje\falsebenet\Bike\Angivende.ini fguhvri File opened for modification C:\Windows\resources\0409\Hovedgaarde.For fguhvri File opened for modification C:\Windows\resources\0409\Katje\falsebenet\Bike\Angivende.ini tmp.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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NSIS installer 6 IoCs
resource yara_rule behavioral2/files/0x00080000000230c9-164.dat nsis_installer_1 behavioral2/files/0x00080000000230c9-164.dat nsis_installer_2 behavioral2/files/0x00080000000230c9-165.dat nsis_installer_1 behavioral2/files/0x00080000000230c9-165.dat nsis_installer_2 behavioral2/files/0x00080000000230c9-182.dat nsis_installer_1 behavioral2/files/0x00080000000230c9-182.dat nsis_installer_2 -
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 tmp.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI tmp.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI tmp.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 5112 tmp.exe 5112 tmp.exe 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found 3180 Process not Found -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3180 Process not Found -
Suspicious behavior: MapViewOfSection 3 IoCs
pid Process 4748 tmp.exe 5112 tmp.exe 1272 fguhvri -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 3180 Process not Found Token: SeCreatePagefilePrivilege 3180 Process not Found -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4748 wrote to memory of 5112 4748 tmp.exe 94 PID 4748 wrote to memory of 5112 4748 tmp.exe 94 PID 4748 wrote to memory of 5112 4748 tmp.exe 94 PID 4748 wrote to memory of 5112 4748 tmp.exe 94 PID 1272 wrote to memory of 4736 1272 fguhvri 104 PID 1272 wrote to memory of 4736 1272 fguhvri 104 PID 1272 wrote to memory of 4736 1272 fguhvri 104 PID 1272 wrote to memory of 4736 1272 fguhvri 104 -
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\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4748 -
C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:5112
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C:\Users\Admin\AppData\Roaming\fguhvriC:\Users\Admin\AppData\Roaming\fguhvri1⤵
- Checks QEMU agent file
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1272 -
C:\Users\Admin\AppData\Roaming\fguhvriC:\Users\Admin\AppData\Roaming\fguhvri2⤵
- Loads dropped DLL
PID:4736
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
11KB
MD5375e8a08471dc6f85f3828488b1147b3
SHA11941484ac710fc301a7d31d6f1345e32a21546af
SHA2564c86b238e64ecfaabe322a70fd78db229a663ccc209920f3385596a6e3205f78
SHA5125ba29db13723ddf27b265a4548606274b850d076ae1f050c64044f8ccd020585ad766c85c3e20003a22f356875f76fb3679c89547b0962580d8e5a42b082b9a8
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Filesize
11KB
MD5375e8a08471dc6f85f3828488b1147b3
SHA11941484ac710fc301a7d31d6f1345e32a21546af
SHA2564c86b238e64ecfaabe322a70fd78db229a663ccc209920f3385596a6e3205f78
SHA5125ba29db13723ddf27b265a4548606274b850d076ae1f050c64044f8ccd020585ad766c85c3e20003a22f356875f76fb3679c89547b0962580d8e5a42b082b9a8
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Filesize
11KB
MD5375e8a08471dc6f85f3828488b1147b3
SHA11941484ac710fc301a7d31d6f1345e32a21546af
SHA2564c86b238e64ecfaabe322a70fd78db229a663ccc209920f3385596a6e3205f78
SHA5125ba29db13723ddf27b265a4548606274b850d076ae1f050c64044f8ccd020585ad766c85c3e20003a22f356875f76fb3679c89547b0962580d8e5a42b082b9a8
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Filesize
703KB
MD5a8a27695f1bc25512354f2c6b5e9d037
SHA1d39c5146f3560a6d55657eaa384a8794e25c97ad
SHA2564365ff3c93ee1faa413ab7cf6838884c449053479d3039e995a6cdfe590125e4
SHA51258e1eb8588514730e5727c684839f35e45390c429e52514d8394d607a332cc8b3be7a733f3dbc856c696d55607d1073289c8dca2d0bc30d1c46de640c262a913
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Filesize
703KB
MD5a8a27695f1bc25512354f2c6b5e9d037
SHA1d39c5146f3560a6d55657eaa384a8794e25c97ad
SHA2564365ff3c93ee1faa413ab7cf6838884c449053479d3039e995a6cdfe590125e4
SHA51258e1eb8588514730e5727c684839f35e45390c429e52514d8394d607a332cc8b3be7a733f3dbc856c696d55607d1073289c8dca2d0bc30d1c46de640c262a913
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Filesize
703KB
MD5a8a27695f1bc25512354f2c6b5e9d037
SHA1d39c5146f3560a6d55657eaa384a8794e25c97ad
SHA2564365ff3c93ee1faa413ab7cf6838884c449053479d3039e995a6cdfe590125e4
SHA51258e1eb8588514730e5727c684839f35e45390c429e52514d8394d607a332cc8b3be7a733f3dbc856c696d55607d1073289c8dca2d0bc30d1c46de640c262a913