Analysis
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max time kernel
242s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
01-05-2024 23:09
Static task
static1
Behavioral task
behavioral1
Sample
572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exe
Resource
win10-20240404-en
General
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Target
572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exe
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Size
279KB
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MD5
6cf5467cb6baf7f36a68b8d201472437
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SHA1
dcc57b51295957ac135c0bc7617865eb32c81650
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SHA256
572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5
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SHA512
8cc7cd2335c20a816120e4c67d1846de517d4ea5e995096722481d3906bc0ab31b7f61d536f7690b79ef8f799fe97ada1dbdefc883f1873b03f2c1944ffa5b28
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SSDEEP
3072:XYqW1BHlxlpbbOujI+R+gT0AA5qpH6BaSeNS3EzlohwdO8YfNn4kYpuNb9AhLgVQ:XYqC9AkIFgTwKFEE5o7NnBBqk
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-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe -
Deletes itself 1 IoCs
Processes:
pid process 1116 -
Executes dropped EXE 1 IoCs
Processes:
CA72.exepid process 624 CA72.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:
CA72.exedescription ioc process File opened for modification \??\PHYSICALDRIVE0 CA72.exe -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exe -
Modifies registry class 5 IoCs
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff explorer.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exepid process 2972 572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exe 2972 572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exe 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 1116 -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
explorer.exepid process 1232 explorer.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exepid process 2972 572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
explorer.exedescription pid process Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe Token: SeShutdownPrivilege 1232 explorer.exe -
Suspicious use of FindShellTrayWindow 31 IoCs
Processes:
explorer.exepid process 1116 1116 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe -
Suspicious use of SendNotifyMessage 20 IoCs
Processes:
explorer.exepid process 1116 1116 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe 1232 explorer.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
cmd.execmd.exedescription pid process target process PID 1116 wrote to memory of 2496 1116 cmd.exe PID 1116 wrote to memory of 2496 1116 cmd.exe PID 1116 wrote to memory of 2496 1116 cmd.exe PID 2496 wrote to memory of 2640 2496 cmd.exe reg.exe PID 2496 wrote to memory of 2640 2496 cmd.exe reg.exe PID 2496 wrote to memory of 2640 2496 cmd.exe reg.exe PID 1116 wrote to memory of 2652 1116 cmd.exe PID 1116 wrote to memory of 2652 1116 cmd.exe PID 1116 wrote to memory of 2652 1116 cmd.exe PID 2652 wrote to memory of 2408 2652 cmd.exe reg.exe PID 2652 wrote to memory of 2408 2652 cmd.exe reg.exe PID 2652 wrote to memory of 2408 2652 cmd.exe reg.exe PID 1116 wrote to memory of 624 1116 CA72.exe PID 1116 wrote to memory of 624 1116 CA72.exe PID 1116 wrote to memory of 624 1116 CA72.exe PID 1116 wrote to memory of 624 1116 CA72.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\572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.exe"C:\Users\Admin\AppData\Local\Temp\572831b4dcb5d526f669bbb81f011b1b0abd5e5f3d44642c34d5c3d60f8119b5.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\5F9D.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\6D16.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:\Users\Admin\AppData\Local\Temp\CA72.exeC:\Users\Admin\AppData\Local\Temp\CA72.exe1⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
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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\5F9D.batFilesize
77B
MD555cc761bf3429324e5a0095cab002113
SHA12cc1ef4542a4e92d4158ab3978425d517fafd16d
SHA256d6cceb3c71b80403364bf142f2fa4624ee0be36a49bac25ed45a497cf1ce9c3a
SHA51233f9f5cad22d291077787c7df510806e4ac31f453d288712595af6debe579fabed6cdf4662e46e6fa94de135b161e739f55cfae05c36c87af85ed6a6ad1c9155
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C:\Users\Admin\AppData\Local\Temp\CA72.exeFilesize
421KB
MD59185b776b7a981d060b0bb0d7ffed201
SHA1427982fb520c099e8d2e831ace18294ade871aff
SHA25691a45c416324ed3a8c184e349214e7c82d6df0df4fe6d06f3c7818c0d322373b
SHA512cb46ca0c3156dc7b177fdb73869e13b229cbab8918dbb4b61a854765313fc9526aa5d7b944aa4b9acb77717c5ffd8fe955ba4eb48d75e2528ec844bfcf4aa5e8
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memory/1116-4-0x0000000002DF0000-0x0000000002E06000-memory.dmpFilesize
88KB
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memory/1116-36-0x0000000002B30000-0x0000000002B31000-memory.dmpFilesize
4KB
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memory/1232-41-0x0000000002A80000-0x0000000002A90000-memory.dmpFilesize
64KB
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memory/2972-1-0x0000000001E60000-0x0000000001F60000-memory.dmpFilesize
1024KB
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memory/2972-3-0x0000000000400000-0x000000000040B000-memory.dmpFilesize
44KB
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memory/2972-2-0x00000000003B0000-0x00000000003BB000-memory.dmpFilesize
44KB
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memory/2972-8-0x0000000000400000-0x000000000040B000-memory.dmpFilesize
44KB
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memory/2972-5-0x0000000000400000-0x0000000001A11000-memory.dmpFilesize
22.1MB