Analysis
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max time kernel
152s -
max time network
153s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
29-12-2020 07:47
Static task
static1
Behavioral task
behavioral1
Sample
2f6bac544fe67b6190c962a78b0fc82a.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
2f6bac544fe67b6190c962a78b0fc82a.exe
Resource
win10v20201028
General
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Target
2f6bac544fe67b6190c962a78b0fc82a.exe
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Size
137KB
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MD5
2f6bac544fe67b6190c962a78b0fc82a
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SHA1
05c582deb76f170c3d4e3d749e7bcd931ea61bbd
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SHA256
5f0ed96dd82e54969f74392ab82759116ee18a2232f44b3cf9754b216d83e2a2
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SHA512
ef6ddcc78da2ac6c89631a3e9249a415a17d567359c23b209b073d297c371918b36df8dc3a9eaaefd23dbe65d90afb639b5ea48187c46511c4e58996363ab5b9
Malware Config
Extracted
smokeloader
2020
http://vtdilet.com/upload/
http://netvxi.com/upload/
http://tinnys.monster/upload/
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Executes dropped EXE 2 IoCs
Processes:
4357.exeA3EE.exepid process 1132 4357.exe 968 A3EE.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\4357.exe upx C:\Users\Admin\AppData\Local\Temp\4357.exe upx C:\Users\Admin\AppData\Local\Temp\A3EE.exe upx -
Deletes itself 1 IoCs
Processes:
pid process 1232 -
Loads dropped DLL 5 IoCs
Processes:
2f6bac544fe67b6190c962a78b0fc82a.exerundll32.exepid process 756 2f6bac544fe67b6190c962a78b0fc82a.exe 1920 rundll32.exe 1920 rundll32.exe 1920 rundll32.exe 1920 rundll32.exe -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
2f6bac544fe67b6190c962a78b0fc82a.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 2f6bac544fe67b6190c962a78b0fc82a.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 2f6bac544fe67b6190c962a78b0fc82a.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 2f6bac544fe67b6190c962a78b0fc82a.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1508 timeout.exe -
Processes:
A3EE.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 A3EE.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 040000000100000010000000410352dc0ff7501b16f0028eba6f45c50f00000001000000140000005bcaa1c2780f0bcb5a90770451d96f38963f012d0b000000010000001e000000440053005400200052006f006f0074002000430041002000580033000000090000000100000016000000301406082b0601050507030406082b06010505070301140000000100000014000000c4a7b1a47b2c71fadbe14b9075ffc415608589101d00000001000000100000004558d512eecb27464920897de7b66053030000000100000014000000dac9024f54d8f6df94935fb1732638ca6ad77c131900000001000000100000006cf252fec3e8f20996de5d4dd9aef42420000000010000004e0300003082034a30820232a003020102021044afb080d6a327ba893039862ef8406b300d06092a864886f70d0101050500303f31243022060355040a131b4469676974616c205369676e617475726520547275737420436f2e311730150603550403130e44535420526f6f74204341205833301e170d3030303933303231313231395a170d3231303933303134303131355a303f31243022060355040a131b4469676974616c205369676e617475726520547275737420436f2e311730150603550403130e44535420526f6f7420434120583330820122300d06092a864886f70d01010105000382010f003082010a0282010100dfafe99750088357b4cc6265f69082ecc7d32c6b30ca5becd9c37dc740c118148be0e83376492ae33f214993ac4e0eaf3e48cb65eefcd3210f65d22ad9328f8ce5f777b0127bb595c089a3a9baed732e7a0c063283a27e8a1430cd11a0e12a38b9790a31fd50bd8065dfb7516383c8e28861ea4b6181ec526bb9a2e24b1a289f48a39e0cda098e3e172e1edd20df5bc62a8aab2ebd70adc50b1a25907472c57b6aab34d63089ffe568137b540bc8d6aeec5a9c921e3d64b38cc6dfbfc94170ec1672d526ec38553943d0fcfd185c40f197ebd59a9b8d1dbada25b9c6d8dfc115023aabda6ef13e2ef55c089c3cd68369e4109b192ab62957e3e53d9b9ff0025d0203010001a3423040300f0603551d130101ff040530030101ff300e0603551d0f0101ff040403020106301d0603551d0e04160414c4a7b1a47b2c71fadbe14b9075ffc41560858910300d06092a864886f70d01010505000382010100a31a2c9b17005ca91eee2866373abf83c73f4bc309a095205de3d95944d23e0d3ebd8a4ba0741fce10829c741a1d7e981addcb134bb32044e491e9ccfc7da5db6ae5fee6fde04eddb7003ab57049aff2e5eb02f1d1028b19cb943a5e48c4181e58195f1e025af00cf1b1ada9dc59868b6ee991f586cafab96633aa595bcee2a7167347cb2bcc99b03748cfe3564bf5cf0f0c723287c6f044bb53726d43f526489a5267b758abfe67767178db0da256141339243185a2a8025a3047e1dd5007bc02099000eb6463609b16bc88c912e6d27d918bf93d328d65b4e97cb15776eac5b62839bf15651cc8f677966a0a8d770bd8910b048e07db29b60aee9d82353510 A3EE.exe -
Suspicious behavior: EnumeratesProcesses 712 IoCs
Processes:
2f6bac544fe67b6190c962a78b0fc82a.exepid process 756 2f6bac544fe67b6190c962a78b0fc82a.exe 756 2f6bac544fe67b6190c962a78b0fc82a.exe 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 1232 -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
2f6bac544fe67b6190c962a78b0fc82a.exepid process 756 2f6bac544fe67b6190c962a78b0fc82a.exe -
Suspicious use of FindShellTrayWindow 4 IoCs
Processes:
pid process 1232 1232 1232 1232 -
Suspicious use of SendNotifyMessage 4 IoCs
Processes:
pid process 1232 1232 1232 1232 -
Suspicious use of WriteProcessMemory 43 IoCs
Processes:
4357.execmd.execmd.execmd.execmd.exedescription pid process target process PID 1232 wrote to memory of 1132 1232 4357.exe PID 1232 wrote to memory of 1132 1232 4357.exe PID 1232 wrote to memory of 1132 1232 4357.exe PID 1232 wrote to memory of 1132 1232 4357.exe PID 1132 wrote to memory of 820 1132 4357.exe cmd.exe PID 1132 wrote to memory of 820 1132 4357.exe cmd.exe PID 1132 wrote to memory of 820 1132 4357.exe cmd.exe PID 1132 wrote to memory of 820 1132 4357.exe cmd.exe PID 1132 wrote to memory of 788 1132 4357.exe cmd.exe PID 1132 wrote to memory of 788 1132 4357.exe cmd.exe PID 1132 wrote to memory of 788 1132 4357.exe cmd.exe PID 1132 wrote to memory of 788 1132 4357.exe cmd.exe PID 788 wrote to memory of 1508 788 cmd.exe timeout.exe PID 788 wrote to memory of 1508 788 cmd.exe timeout.exe PID 788 wrote to memory of 1508 788 cmd.exe timeout.exe PID 788 wrote to memory of 1508 788 cmd.exe timeout.exe PID 820 wrote to memory of 1156 820 cmd.exe reg.exe PID 820 wrote to memory of 1156 820 cmd.exe reg.exe PID 820 wrote to memory of 1156 820 cmd.exe reg.exe PID 820 wrote to memory of 1156 820 cmd.exe reg.exe PID 1132 wrote to memory of 1716 1132 4357.exe cmd.exe PID 1132 wrote to memory of 1716 1132 4357.exe cmd.exe PID 1132 wrote to memory of 1716 1132 4357.exe cmd.exe PID 1132 wrote to memory of 1716 1132 4357.exe cmd.exe PID 1132 wrote to memory of 1556 1132 4357.exe cmd.exe PID 1132 wrote to memory of 1556 1132 4357.exe cmd.exe PID 1132 wrote to memory of 1556 1132 4357.exe cmd.exe PID 1132 wrote to memory of 1556 1132 4357.exe cmd.exe PID 1716 wrote to memory of 1688 1716 cmd.exe reg.exe PID 1716 wrote to memory of 1688 1716 cmd.exe reg.exe PID 1716 wrote to memory of 1688 1716 cmd.exe reg.exe PID 1716 wrote to memory of 1688 1716 cmd.exe reg.exe PID 1556 wrote to memory of 1920 1556 cmd.exe rundll32.exe PID 1556 wrote to memory of 1920 1556 cmd.exe rundll32.exe PID 1556 wrote to memory of 1920 1556 cmd.exe rundll32.exe PID 1556 wrote to memory of 1920 1556 cmd.exe rundll32.exe PID 1556 wrote to memory of 1920 1556 cmd.exe rundll32.exe PID 1556 wrote to memory of 1920 1556 cmd.exe rundll32.exe PID 1556 wrote to memory of 1920 1556 cmd.exe rundll32.exe PID 1232 wrote to memory of 968 1232 A3EE.exe PID 1232 wrote to memory of 968 1232 A3EE.exe PID 1232 wrote to memory of 968 1232 A3EE.exe PID 1232 wrote to memory of 968 1232 A3EE.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2f6bac544fe67b6190c962a78b0fc82a.exe"C:\Users\Admin\AppData\Local\Temp\2f6bac544fe67b6190c962a78b0fc82a.exe"1⤵
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\4357.exeC:\Users\Admin\AppData\Local\Temp\4357.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C reg add "HKEY_CURRENT_USER\Software\NetHelper" /v path /t REG_SZ /d C:\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw /f2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg add "HKEY_CURRENT_USER\Software\NetHelper" /v path /t REG_SZ /d C:\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw /f3⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C timeout /t 60 && SCHTASKS /Create /SC MINUTE /MO 1 /TN "Service for windows Network Helper updates" /TR C:\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw\nethelper.exe /F2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 603⤵
- Delays execution with timeout.exe
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C reg add "HKEY_CURRENT_USER\Software\NetHelper" /v library /t REG_SZ /d C:\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw\nethelper.dll /f && EXIT 02⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg add "HKEY_CURRENT_USER\Software\NetHelper" /v library /t REG_SZ /d C:\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw\nethelper.dll /f3⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C rundll32.exe C:\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw\nethelper.dll, UserModeExport2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw\nethelper.dll, UserModeExport3⤵
- Loads dropped DLL
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C:\Users\Admin\AppData\Local\Temp\A3EE.exeC:\Users\Admin\AppData\Local\Temp\A3EE.exe1⤵
- Executes dropped EXE
- Modifies system certificate store
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw\nethelper.dllMD5
e835f27f6b6a2b0af42873ce2cc6cc07
SHA16f0d337dff455f08f29f20a75dd5f2de2d9ae19a
SHA25684762c5267b583916431e0a1170809b4f366d54fd0d48aea4f07256f10984f84
SHA512c6d079fc59aed72ec45008d48130210a450dc50722ebb3d577ffd7c47f2633a5e11fbea95773a26384bf8ca20da46013731530fbb5c13598b96012cf910ab984
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C:\Users\Admin\AppData\Local\Temp\4357.exeMD5
57a9c6d1f80eec2792d26d5903a9228b
SHA115455de7cb21d125651d9cf88b23af2953bfa96f
SHA256b33cc87f7974c98429bcf0396527bb81c97bb11eb143257e9e1196d685949120
SHA5120f1b1e42bba286c6b5d08571c97d770c287eff5249acef52809640a0e55a67711331e5adaaa6dae89ea16e817f29fd59da2bf0ff66864f53279cb834f112a280
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C:\Users\Admin\AppData\Local\Temp\4357.exeMD5
57a9c6d1f80eec2792d26d5903a9228b
SHA115455de7cb21d125651d9cf88b23af2953bfa96f
SHA256b33cc87f7974c98429bcf0396527bb81c97bb11eb143257e9e1196d685949120
SHA5120f1b1e42bba286c6b5d08571c97d770c287eff5249acef52809640a0e55a67711331e5adaaa6dae89ea16e817f29fd59da2bf0ff66864f53279cb834f112a280
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C:\Users\Admin\AppData\Local\Temp\A3EE.exeMD5
3c362d50ee8dda5655d201c1892e6ac2
SHA1c61e83407acab961d7094b5f20c89501d4d94651
SHA256ce8f6248e942286fa329f634581603ceea496cd968df33c7241745b41faac6ae
SHA512274372ddf532c76fd23b2122d9ac108525289da3153d03dbb23373ca4b350eaa2f7e7241948e79e39ad146afc529a87048b702765e39a04691253c6bd5c360ae
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\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw\nethelper.dllMD5
e835f27f6b6a2b0af42873ce2cc6cc07
SHA16f0d337dff455f08f29f20a75dd5f2de2d9ae19a
SHA25684762c5267b583916431e0a1170809b4f366d54fd0d48aea4f07256f10984f84
SHA512c6d079fc59aed72ec45008d48130210a450dc50722ebb3d577ffd7c47f2633a5e11fbea95773a26384bf8ca20da46013731530fbb5c13598b96012cf910ab984
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\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw\nethelper.dllMD5
e835f27f6b6a2b0af42873ce2cc6cc07
SHA16f0d337dff455f08f29f20a75dd5f2de2d9ae19a
SHA25684762c5267b583916431e0a1170809b4f366d54fd0d48aea4f07256f10984f84
SHA512c6d079fc59aed72ec45008d48130210a450dc50722ebb3d577ffd7c47f2633a5e11fbea95773a26384bf8ca20da46013731530fbb5c13598b96012cf910ab984
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\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw\nethelper.dllMD5
e835f27f6b6a2b0af42873ce2cc6cc07
SHA16f0d337dff455f08f29f20a75dd5f2de2d9ae19a
SHA25684762c5267b583916431e0a1170809b4f366d54fd0d48aea4f07256f10984f84
SHA512c6d079fc59aed72ec45008d48130210a450dc50722ebb3d577ffd7c47f2633a5e11fbea95773a26384bf8ca20da46013731530fbb5c13598b96012cf910ab984
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\ProgramData\NetHelper\Cache\NwlfzoZyygOVtrFTvoYw\nethelper.dllMD5
e835f27f6b6a2b0af42873ce2cc6cc07
SHA16f0d337dff455f08f29f20a75dd5f2de2d9ae19a
SHA25684762c5267b583916431e0a1170809b4f366d54fd0d48aea4f07256f10984f84
SHA512c6d079fc59aed72ec45008d48130210a450dc50722ebb3d577ffd7c47f2633a5e11fbea95773a26384bf8ca20da46013731530fbb5c13598b96012cf910ab984
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\Users\Admin\AppData\Local\Temp\CC4F.tmpMD5
d124f55b9393c976963407dff51ffa79
SHA12c7bbedd79791bfb866898c85b504186db610b5d
SHA256ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06
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memory/756-2-0x0000000004F3A000-0x0000000004F3B000-memory.dmpFilesize
4KB
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memory/756-3-0x0000000005210000-0x0000000005221000-memory.dmpFilesize
68KB
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memory/788-12-0x0000000000000000-mapping.dmp
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memory/808-15-0x000007FEF7040000-0x000007FEF72BA000-memory.dmpFilesize
2.5MB
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memory/820-10-0x0000000000000000-mapping.dmp
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memory/968-25-0x0000000000000000-mapping.dmp
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memory/968-27-0x0000000004E6A000-0x0000000004E6B000-memory.dmpFilesize
4KB
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memory/968-28-0x0000000005120000-0x0000000005131000-memory.dmpFilesize
68KB
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memory/1132-8-0x000000000028A000-0x000000000028B000-memory.dmpFilesize
4KB
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memory/1132-9-0x0000000004E70000-0x0000000004E81000-memory.dmpFilesize
68KB
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memory/1132-6-0x0000000000000000-mapping.dmp
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memory/1156-14-0x0000000000000000-mapping.dmp
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memory/1232-5-0x0000000002AC0000-0x0000000002AD6000-memory.dmpFilesize
88KB
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memory/1508-13-0x0000000000000000-mapping.dmp
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memory/1556-17-0x0000000000000000-mapping.dmp
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memory/1688-18-0x0000000000000000-mapping.dmp
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memory/1716-16-0x0000000000000000-mapping.dmp
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memory/1920-19-0x0000000000000000-mapping.dmp