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Analysis
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max time kernel
119s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
12/10/2023, 14:59
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe
Resource
win7-20230831-en
windows7-x64
14 signatures
150 seconds
Behavioral task
behavioral2
Sample
JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe
Resource
win10v2004-20230915-en
windows10-2004-x64
14 signatures
150 seconds
General
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Target
JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe
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Size
215KB
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MD5
8ea351569502e25ccc2e22fe07de34de
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SHA1
ce3337bf8eff1f6ce9b269d876f685fa4e9da37d
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SHA256
fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff
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SHA512
833afac8de18ed09d57a0b4ae32223c101ccb58b4bc6d19f18775e89766a4b83322b033bd89795853780e81a48e0a89371d7e14d8611f663bed06ba81199450d
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SSDEEP
3072:dAXRhajNeLyTfK8U6sj/+aOZOEcJrcanXplEPmAZHI5TvpTJel:GRhkNeLsS8U6mOM1J5nZ6PJZH6vpTU
Score
10/10
Malware Config
Extracted
Family
smokeloader
Botnet
up4
Extracted
Family
smokeloader
Version
2020
C2
http://host-file-file0.com/
http://file-file-file1.com/
rc4.i32
rc4.i32
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Modifies Installed Components in the registry 2 TTPs 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe -
Deletes itself 1 IoCs
pid Process 1208 Process not Found -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2096 set thread context of 2276 2096 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe 28 -
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 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff explorer.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2276 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe 2276 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found 1208 Process not Found -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 1208 Process not Found 2748 explorer.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2276 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe Token: SeShutdownPrivilege 2748 explorer.exe -
Suspicious use of FindShellTrayWindow 28 IoCs
pid Process 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe -
Suspicious use of SendNotifyMessage 24 IoCs
pid Process 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe 2748 explorer.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2096 wrote to memory of 2276 2096 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe 28 PID 2096 wrote to memory of 2276 2096 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe 28 PID 2096 wrote to memory of 2276 2096 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe 28 PID 2096 wrote to memory of 2276 2096 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe 28 PID 2096 wrote to memory of 2276 2096 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe 28 PID 2096 wrote to memory of 2276 2096 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe 28 PID 2096 wrote to memory of 2276 2096 JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe 28 -
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\JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe"C:\Users\Admin\AppData\Local\Temp\JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2096 -
C:\Users\Admin\AppData\Local\Temp\JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe"C:\Users\Admin\AppData\Local\Temp\JC_fb31becd251c87450afffbc194d4a93c87db29d40a5857fa13959124db68fdff.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2276
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C:\Windows\explorer.exeexplorer.exe1⤵
- Modifies Installed Components in the registry
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2748