Analysis
- max time kernel
1801s - max time network
1448s - platform
windows10_x64 - resource
win10v20210410 - submitted
25/08/2021, 11:26
Static task
static1
Behavioral task
behavioral1
Sample
40c05a8ef279605719d194d37cf70a4a.exe
Resource
win7v20210408
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
40c05a8ef279605719d194d37cf70a4a.exe
Resource
win10v20210410
windows10_x64
0 signatures
0 seconds
General
- Target 40c05a8ef279605719d194d37cf70a4a.exe
- Size 142KB
- Sample210825-abfycnfjps
- SHA256 4d2041a2a0df754a74123b251358abd1f981985d32103138943ee2974cbb6f1d
- MD5 40c05a8ef279605719d194d37cf70a4a
- SHA1 5a295bfcb661642c5985135173450fafa416d43b
- SHA512 b8d99f82a2e34164d6b08385f8b8f93888682500ea800885b55ac54565b32f4f1cf09420d38ed2d46970a129a442ec8b043c54c891f107f839026dde4acfa0fc
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Version
-
2020
C2
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http://readinglistforaugust1.xyz/
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http://readinglistforaugust2.xyz/
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http://readinglistforaugust3.xyz/
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http://readinglistforaugust4.xyz/
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http://readinglistforaugust5.xyz/
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http://readinglistforaugust6.xyz/
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http://readinglistforaugust7.xyz/
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http://readinglistforaugust8.xyz/
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http://readinglistforaugust9.xyz/
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http://readinglistforaugust10.xyz/
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http://readinglistforaugust1.site/
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http://readinglistforaugust2.site/
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http://readinglistforaugust3.site/
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http://readinglistforaugust4.site/
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http://readinglistforaugust5.site/
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http://readinglistforaugust6.site/
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http://readinglistforaugust7.site/
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http://readinglistforaugust8.site/
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http://readinglistforaugust9.site/
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http://readinglistforaugust10.site/
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http://readinglistforaugust1.club/
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http://readinglistforaugust2.club/
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http://readinglistforaugust3.club/
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http://readinglistforaugust4.club/
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http://readinglistforaugust5.club/
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http://readinglistforaugust6.club/
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http://readinglistforaugust7.club/
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http://readinglistforaugust8.club/
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http://readinglistforaugust9.club/
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http://readinglistforaugust10.club/
rc4.i32
rc4.i32
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 6 IoCs
pid Process 2064 rtiacuc 1904 rtiacuc 3748 rtiacuc 1072 rtiacuc 3916 rtiacuc 200 rtiacuc - Deletes itself 1 IoCs
pid Process 2824 Process not Found - Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 3484 set thread context of 3524 3484 40c05a8ef279605719d194d37cf70a4a.exe 78 PID 2064 set thread context of 1904 2064 rtiacuc 81 PID 3748 set thread context of 1072 3748 rtiacuc 83 PID 3916 set thread context of 200 3916 rtiacuc 85 - Checks SCSI registry key(s) 3 TTPs 12 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtiacuc Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtiacuc Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtiacuc Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtiacuc Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtiacuc Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtiacuc Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtiacuc Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtiacuc Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 40c05a8ef279605719d194d37cf70a4a.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 40c05a8ef279605719d194d37cf70a4a.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 40c05a8ef279605719d194d37cf70a4a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtiacuc - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3524 40c05a8ef279605719d194d37cf70a4a.exe 3524 40c05a8ef279605719d194d37cf70a4a.exe 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found 2824 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2824 Process not Found - Suspicious behavior: MapViewOfSection 4 IoCs
pid Process 3524 40c05a8ef279605719d194d37cf70a4a.exe 1904 rtiacuc 1072 rtiacuc 200 rtiacuc - Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeShutdownPrivilege 2824 Process not Found Token: SeCreatePagefilePrivilege 2824 Process not Found Token: SeShutdownPrivilege 2824 Process not Found Token: SeCreatePagefilePrivilege 2824 Process not Found Token: SeShutdownPrivilege 2824 Process not Found Token: SeCreatePagefilePrivilege 2824 Process not Found Token: SeShutdownPrivilege 2824 Process not Found Token: SeCreatePagefilePrivilege 2824 Process not Found Token: SeShutdownPrivilege 2824 Process not Found Token: SeCreatePagefilePrivilege 2824 Process not Found Token: SeShutdownPrivilege 2824 Process not Found Token: SeCreatePagefilePrivilege 2824 Process not Found Token: SeShutdownPrivilege 2824 Process not Found Token: SeCreatePagefilePrivilege 2824 Process not Found Token: SeShutdownPrivilege 2824 Process not Found Token: SeCreatePagefilePrivilege 2824 Process not Found Token: SeShutdownPrivilege 2824 Process not Found Token: SeCreatePagefilePrivilege 2824 Process not Found - Suspicious use of UnmapMainImage 1 IoCs
pid Process 2824 Process not Found - Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 3484 wrote to memory of 3524 3484 40c05a8ef279605719d194d37cf70a4a.exe 78 PID 3484 wrote to memory of 3524 3484 40c05a8ef279605719d194d37cf70a4a.exe 78 PID 3484 wrote to memory of 3524 3484 40c05a8ef279605719d194d37cf70a4a.exe 78 PID 3484 wrote to memory of 3524 3484 40c05a8ef279605719d194d37cf70a4a.exe 78 PID 3484 wrote to memory of 3524 3484 40c05a8ef279605719d194d37cf70a4a.exe 78 PID 3484 wrote to memory of 3524 3484 40c05a8ef279605719d194d37cf70a4a.exe 78 PID 2064 wrote to memory of 1904 2064 rtiacuc 81 PID 2064 wrote to memory of 1904 2064 rtiacuc 81 PID 2064 wrote to memory of 1904 2064 rtiacuc 81 PID 2064 wrote to memory of 1904 2064 rtiacuc 81 PID 2064 wrote to memory of 1904 2064 rtiacuc 81 PID 2064 wrote to memory of 1904 2064 rtiacuc 81 PID 3748 wrote to memory of 1072 3748 rtiacuc 83 PID 3748 wrote to memory of 1072 3748 rtiacuc 83 PID 3748 wrote to memory of 1072 3748 rtiacuc 83 PID 3748 wrote to memory of 1072 3748 rtiacuc 83 PID 3748 wrote to memory of 1072 3748 rtiacuc 83 PID 3748 wrote to memory of 1072 3748 rtiacuc 83 PID 3916 wrote to memory of 200 3916 rtiacuc 85 PID 3916 wrote to memory of 200 3916 rtiacuc 85 PID 3916 wrote to memory of 200 3916 rtiacuc 85 PID 3916 wrote to memory of 200 3916 rtiacuc 85 PID 3916 wrote to memory of 200 3916 rtiacuc 85 PID 3916 wrote to memory of 200 3916 rtiacuc 85
Processes
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C:\Users\Admin\AppData\Local\Temp\40c05a8ef279605719d194d37cf70a4a.exe"C:\Users\Admin\AppData\Local\Temp\40c05a8ef279605719d194d37cf70a4a.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3484 -
C:\Users\Admin\AppData\Local\Temp\40c05a8ef279605719d194d37cf70a4a.exe"C:\Users\Admin\AppData\Local\Temp\40c05a8ef279605719d194d37cf70a4a.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3524
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-
C:\Users\Admin\AppData\Roaming\rtiacucC:\Users\Admin\AppData\Roaming\rtiacuc1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2064 -
C:\Users\Admin\AppData\Roaming\rtiacucC:\Users\Admin\AppData\Roaming\rtiacuc2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1904
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-
C:\Users\Admin\AppData\Roaming\rtiacucC:\Users\Admin\AppData\Roaming\rtiacuc1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3748 -
C:\Users\Admin\AppData\Roaming\rtiacucC:\Users\Admin\AppData\Roaming\rtiacuc2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1072
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-
C:\Users\Admin\AppData\Roaming\rtiacucC:\Users\Admin\AppData\Roaming\rtiacuc1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3916 -
C:\Users\Admin\AppData\Roaming\rtiacucC:\Users\Admin\AppData\Roaming\rtiacuc2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:200
-