Analysis
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max time kernel
150s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
04/03/2024, 03:28
Static task
static1
Behavioral task
behavioral1
Sample
b11b550fccddee0f9652cb34c12f91c0.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
b11b550fccddee0f9652cb34c12f91c0.exe
Resource
win10v2004-20240226-en
General
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Target
b11b550fccddee0f9652cb34c12f91c0.exe
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Size
180KB
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MD5
b11b550fccddee0f9652cb34c12f91c0
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SHA1
0dd1703f8971981781f07b931547a07ea2d3a420
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SHA256
fd58afa96d56df9d4bb20955601fc4b7e379b9964eccf31cb1904252f709dbc7
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SHA512
612e823b664f77b50e751ff1e2a4964fd110685583ff51af3e1875fc74a228a47539e0ddbc584c3558c88eab2bc32807e8cd533878bcbc2519b1554e6abe9496
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SSDEEP
3072:nLKj98VzeJcm/ujPBN4SpORcoWJfPsV98Q5NGSfPH+:nLPUdOJzloWdPsViQGSHe
Malware Config
Extracted
smokeloader
0708
Extracted
smokeloader
2020
http://readinglistforjuly1.xyz/
http://readinglistforjuly2.xyz/
http://readinglistforjuly3.xyz/
http://readinglistforjuly4.xyz/
http://readinglistforjuly5.xyz/
http://readinglistforjuly6.xyz/
http://readinglistforjuly7.xyz/
http://readinglistforjuly8.xyz/
http://readinglistforjuly9.xyz/
http://readinglistforjuly10.xyz/
http://readinglistforjuly1.site/
http://readinglistforjuly2.site/
http://readinglistforjuly3.site/
http://readinglistforjuly4.site/
http://readinglistforjuly5.site/
http://readinglistforjuly6.site/
http://readinglistforjuly7.site/
http://readinglistforjuly8.site/
http://readinglistforjuly9.site/
http://readinglistforjuly10.site/
http://readinglistforjuly1.club/
http://readinglistforjuly2.club/
http://readinglistforjuly3.club/
http://readinglistforjuly4.club/
http://readinglistforjuly5.club/
http://readinglistforjuly6.club/
http://readinglistforjuly7.club/
http://readinglistforjuly8.club/
http://readinglistforjuly9.club/
http://readinglistforjuly10.club/
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Deletes itself 1 IoCs
pid Process 1200 Process not Found -
Executes dropped EXE 2 IoCs
pid Process 2624 fcwstfw 2840 fcwstfw -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2740 set thread context of 776 2740 b11b550fccddee0f9652cb34c12f91c0.exe 28 PID 2624 set thread context of 2840 2624 fcwstfw 33 -
Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fcwstfw Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b11b550fccddee0f9652cb34c12f91c0.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b11b550fccddee0f9652cb34c12f91c0.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b11b550fccddee0f9652cb34c12f91c0.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fcwstfw Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fcwstfw -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 776 b11b550fccddee0f9652cb34c12f91c0.exe 776 b11b550fccddee0f9652cb34c12f91c0.exe 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found 1200 Process not Found -
Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 776 b11b550fccddee0f9652cb34c12f91c0.exe 2840 fcwstfw -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1200 Process not Found 1200 Process not Found -
Suspicious use of SendNotifyMessage 2 IoCs
pid Process 1200 Process not Found 1200 Process not Found -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 2740 wrote to memory of 776 2740 b11b550fccddee0f9652cb34c12f91c0.exe 28 PID 2740 wrote to memory of 776 2740 b11b550fccddee0f9652cb34c12f91c0.exe 28 PID 2740 wrote to memory of 776 2740 b11b550fccddee0f9652cb34c12f91c0.exe 28 PID 2740 wrote to memory of 776 2740 b11b550fccddee0f9652cb34c12f91c0.exe 28 PID 2740 wrote to memory of 776 2740 b11b550fccddee0f9652cb34c12f91c0.exe 28 PID 2740 wrote to memory of 776 2740 b11b550fccddee0f9652cb34c12f91c0.exe 28 PID 2740 wrote to memory of 776 2740 b11b550fccddee0f9652cb34c12f91c0.exe 28 PID 2336 wrote to memory of 2624 2336 taskeng.exe 32 PID 2336 wrote to memory of 2624 2336 taskeng.exe 32 PID 2336 wrote to memory of 2624 2336 taskeng.exe 32 PID 2336 wrote to memory of 2624 2336 taskeng.exe 32 PID 2624 wrote to memory of 2840 2624 fcwstfw 33 PID 2624 wrote to memory of 2840 2624 fcwstfw 33 PID 2624 wrote to memory of 2840 2624 fcwstfw 33 PID 2624 wrote to memory of 2840 2624 fcwstfw 33 PID 2624 wrote to memory of 2840 2624 fcwstfw 33 PID 2624 wrote to memory of 2840 2624 fcwstfw 33 PID 2624 wrote to memory of 2840 2624 fcwstfw 33
Processes
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C:\Users\Admin\AppData\Local\Temp\b11b550fccddee0f9652cb34c12f91c0.exe"C:\Users\Admin\AppData\Local\Temp\b11b550fccddee0f9652cb34c12f91c0.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2740 -
C:\Users\Admin\AppData\Local\Temp\b11b550fccddee0f9652cb34c12f91c0.exe"C:\Users\Admin\AppData\Local\Temp\b11b550fccddee0f9652cb34c12f91c0.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:776
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C:\Windows\system32\taskeng.exetaskeng.exe {A1F19789-5E28-4827-9839-025A7E0DE4DE} S-1-5-21-3452737119-3959686427-228443150-1000:QGTQZTRE\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2336 -
C:\Users\Admin\AppData\Roaming\fcwstfwC:\Users\Admin\AppData\Roaming\fcwstfw2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2624 -
C:\Users\Admin\AppData\Roaming\fcwstfwC:\Users\Admin\AppData\Roaming\fcwstfw3⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2840
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
180KB
MD5b11b550fccddee0f9652cb34c12f91c0
SHA10dd1703f8971981781f07b931547a07ea2d3a420
SHA256fd58afa96d56df9d4bb20955601fc4b7e379b9964eccf31cb1904252f709dbc7
SHA512612e823b664f77b50e751ff1e2a4964fd110685583ff51af3e1875fc74a228a47539e0ddbc584c3558c88eab2bc32807e8cd533878bcbc2519b1554e6abe9496