Analysis
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max time kernel
284s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
29-04-2024 05:18
Static task
static1
Behavioral task
behavioral1
Sample
bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe
Resource
win10-20240404-en
General
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Target
bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe
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Size
213KB
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MD5
2c8f5e7a9e670c3850b2de0d2f3758b2
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SHA1
42409c886411ce73c1d6f07bbae47bf8f2db713c
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SHA256
bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce
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SHA512
1237d9fbc5cfd97e2377c56143a100daeeff8e71ffa90c4fa7227eab94b3edf841e8ca8b68a8ed8c18d9cc03457a4c246a98147ab317079650bcf88877211454
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SSDEEP
3072:WztTEAEwLBu9QeT5Zpsnf26/5WSIKM4XLr2:WztTEAE4u9Qefp426kSIKM2Lr
Malware Config
Extracted
smokeloader
pub1
Extracted
smokeloader
2022
http://trad-einmyus.com/index.php
http://tradein-myus.com/index.php
http://trade-inmyus.com/index.php
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Downloads MZ/PE file
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Modifies Installed Components in the registry 2 TTPs 1 IoCs
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe -
Deletes itself 1 IoCs
Processes:
pid process 1200 -
Executes dropped EXE 3 IoCs
Processes:
swurisw892F.exe8C7A.exepid process 2240 swurisw 1436 892F.exe 1648 8C7A.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
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Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
892F.exedescription ioc process File opened for modification \??\PHYSICALDRIVE0 892F.exe -
Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
swuriswbc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI swurisw Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI swurisw Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI swurisw Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe -
Modifies registry class 5 IoCs
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff explorer.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exepid process 2936 bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe 2936 bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
explorer.exepid process 1080 explorer.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exeswuriswpid process 2936 bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe 2240 swurisw -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
explorer.exedescription pid process Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe Token: SeShutdownPrivilege 1080 explorer.exe -
Suspicious use of FindShellTrayWindow 32 IoCs
Processes:
explorer.exepid process 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe -
Suspicious use of SendNotifyMessage 25 IoCs
Processes:
explorer.exepid process 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe 1080 explorer.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
cmd.execmd.exetaskeng.exedescription pid process target process PID 1200 wrote to memory of 2668 1200 cmd.exe PID 1200 wrote to memory of 2668 1200 cmd.exe PID 1200 wrote to memory of 2668 1200 cmd.exe PID 2668 wrote to memory of 2592 2668 cmd.exe reg.exe PID 2668 wrote to memory of 2592 2668 cmd.exe reg.exe PID 2668 wrote to memory of 2592 2668 cmd.exe reg.exe PID 1200 wrote to memory of 2484 1200 cmd.exe PID 1200 wrote to memory of 2484 1200 cmd.exe PID 1200 wrote to memory of 2484 1200 cmd.exe PID 2484 wrote to memory of 2476 2484 cmd.exe reg.exe PID 2484 wrote to memory of 2476 2484 cmd.exe reg.exe PID 2484 wrote to memory of 2476 2484 cmd.exe reg.exe PID 1736 wrote to memory of 2240 1736 taskeng.exe swurisw PID 1736 wrote to memory of 2240 1736 taskeng.exe swurisw PID 1736 wrote to memory of 2240 1736 taskeng.exe swurisw PID 1736 wrote to memory of 2240 1736 taskeng.exe swurisw PID 1200 wrote to memory of 1436 1200 892F.exe PID 1200 wrote to memory of 1436 1200 892F.exe PID 1200 wrote to memory of 1436 1200 892F.exe PID 1200 wrote to memory of 1436 1200 892F.exe PID 1200 wrote to memory of 1648 1200 8C7A.exe PID 1200 wrote to memory of 1648 1200 8C7A.exe PID 1200 wrote to memory of 1648 1200 8C7A.exe PID 1200 wrote to memory of 1648 1200 8C7A.exe -
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\bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe"C:\Users\Admin\AppData\Local\Temp\bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\6B60.bat" "1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\reg.exereg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 12⤵
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\7BB6.bat" "1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\reg.exereg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 12⤵
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C:\Windows\system32\taskeng.exetaskeng.exe {3DD50B5A-7B24-4F3F-ABEA-F54ED9118610} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\swuriswC:\Users\Admin\AppData\Roaming\swurisw2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\892F.exeC:\Users\Admin\AppData\Local\Temp\892F.exe1⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
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C:\Users\Admin\AppData\Local\Temp\8C7A.exeC:\Users\Admin\AppData\Local\Temp\8C7A.exe1⤵
- Executes dropped EXE
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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
Network
MITRE ATT&CK Matrix ATT&CK v13
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\6B60.batFilesize
77B
MD555cc761bf3429324e5a0095cab002113
SHA12cc1ef4542a4e92d4158ab3978425d517fafd16d
SHA256d6cceb3c71b80403364bf142f2fa4624ee0be36a49bac25ed45a497cf1ce9c3a
SHA51233f9f5cad22d291077787c7df510806e4ac31f453d288712595af6debe579fabed6cdf4662e46e6fa94de135b161e739f55cfae05c36c87af85ed6a6ad1c9155
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C:\Users\Admin\AppData\Local\Temp\892F.exeFilesize
421KB
MD59185b776b7a981d060b0bb0d7ffed201
SHA1427982fb520c099e8d2e831ace18294ade871aff
SHA25691a45c416324ed3a8c184e349214e7c82d6df0df4fe6d06f3c7818c0d322373b
SHA512cb46ca0c3156dc7b177fdb73869e13b229cbab8918dbb4b61a854765313fc9526aa5d7b944aa4b9acb77717c5ffd8fe955ba4eb48d75e2528ec844bfcf4aa5e8
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C:\Users\Admin\AppData\Local\Temp\8C7A.exeFilesize
291KB
MD5bb119b725e15ccce409b3f77298919a4
SHA18be4b3e59dc8261b0a845bfc26d21b625ab067fd
SHA2561888c66cc964317f99193dd29dd84a14aff496e2823fbdc5f909e7ccb6f27d79
SHA51291b493f0000fcbb249d149c8b80516e551b984e50003bdfbe5f26043ede866f6eae432960cb598e1ac4f7afa792f44af3f090c52277b6eb0c68fa53c62c66cb2
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C:\Users\Admin\AppData\Roaming\swuriswFilesize
213KB
MD52c8f5e7a9e670c3850b2de0d2f3758b2
SHA142409c886411ce73c1d6f07bbae47bf8f2db713c
SHA256bc113ed2bff68b7cf9dd805ec562bffc04fbadcf75a16df1ec6fcfa6b479f5ce
SHA5121237d9fbc5cfd97e2377c56143a100daeeff8e71ffa90c4fa7227eab94b3edf841e8ca8b68a8ed8c18d9cc03457a4c246a98147ab317079650bcf88877211454
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memory/1080-59-0x0000000002B60000-0x0000000002B70000-memory.dmpFilesize
64KB
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memory/1200-4-0x00000000021B0000-0x00000000021C6000-memory.dmpFilesize
88KB
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memory/1200-33-0x0000000002EF0000-0x0000000002F06000-memory.dmpFilesize
88KB
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memory/1200-52-0x0000000002190000-0x0000000002191000-memory.dmpFilesize
4KB
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memory/1648-48-0x0000000000400000-0x0000000002B06000-memory.dmpFilesize
39.0MB
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memory/2240-34-0x0000000000400000-0x0000000002AF3000-memory.dmpFilesize
38.9MB
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memory/2936-8-0x0000000000400000-0x0000000002AF3000-memory.dmpFilesize
38.9MB
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memory/2936-1-0x0000000002F40000-0x0000000003040000-memory.dmpFilesize
1024KB
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memory/2936-3-0x0000000000400000-0x0000000002AF3000-memory.dmpFilesize
38.9MB
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memory/2936-2-0x0000000000220000-0x000000000022B000-memory.dmpFilesize
44KB