Analysis
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max time kernel
150s -
max time network
93s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
09-01-2021 01:35
Static task
static1
Behavioral task
behavioral1
Sample
5xa4g.dll.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
5xa4g.dll.exe
Resource
win10v20201028
General
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Target
5xa4g.dll.exe
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Size
251KB
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MD5
23627e96f5260b8e1d8fdc3da9250126
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SHA1
d68f46e0f9154972b5a0f1dae8e4380a8d227527
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SHA256
fed230e1f92000a5860c06228346b7925d8cce2ac1ebc1048ed5c26576c830f7
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SHA512
395afa4073a58f2644cb10923e7ed9cb5098ab44f8c4bb5efb3bf4c70f4b5f132511ada4d659667d64a743e18a3751082ce84b85de61566987859f2d29348398
Malware Config
Extracted
smokeloader
2020
http://etasuklavish.today/
http://mragyzmachnobesdi.today/
http://kimchinikuzims.today/
http://slacvostinrius.today/
http://straponuliusyn.today/
http://grammmdinss.today/
http://viprasputinsd.chimkent.su/
http://lupadypa.dagestan.su/
http://stoknolimchin.exnet.su/
http://musaroprovadnikov.live/
http://teemforyourexprensiti.life/
http://stolkgolmishutich.termez.su/
http://roompampamgandish.wtf/
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
Processes:
WerFault.exedescription pid process target process PID 964 created 2928 964 WerFault.exe twvsfsh -
Executes dropped EXE 1 IoCs
Processes:
twvsfshpid process 2928 twvsfsh -
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\twvsfsh upx C:\Users\Admin\AppData\Roaming\twvsfsh upx behavioral2/memory/964-12-0x0000000004FA0000-0x0000000004FA1000-memory.dmp upx -
Deletes itself 1 IoCs
Processes:
pid process 2920 -
Loads dropped DLL 1 IoCs
Processes:
5xa4g.dll.exepid process 828 5xa4g.dll.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 964 2928 WerFault.exe twvsfsh -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
5xa4g.dll.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 5xa4g.dll.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 5xa4g.dll.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 5xa4g.dll.exe -
Suspicious behavior: EnumeratesProcesses 2630 IoCs
Processes:
5xa4g.dll.exepid process 828 5xa4g.dll.exe 828 5xa4g.dll.exe 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 2920 -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
5xa4g.dll.exepid process 828 5xa4g.dll.exe -
Suspicious use of AdjustPrivilegeToken 13 IoCs
Processes:
WerFault.exedescription pid process Token: SeRestorePrivilege 964 WerFault.exe Token: SeBackupPrivilege 964 WerFault.exe Token: SeDebugPrivilege 964 WerFault.exe Token: SeShutdownPrivilege 2920 Token: SeCreatePagefilePrivilege 2920 Token: SeShutdownPrivilege 2920 Token: SeCreatePagefilePrivilege 2920 Token: SeShutdownPrivilege 2920 Token: SeCreatePagefilePrivilege 2920 Token: SeShutdownPrivilege 2920 Token: SeCreatePagefilePrivilege 2920 Token: SeShutdownPrivilege 2920 Token: SeCreatePagefilePrivilege 2920 -
Suspicious use of UnmapMainImage 1 IoCs
Processes:
pid process 2920
Processes
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C:\Users\Admin\AppData\Local\Temp\5xa4g.dll.exe"C:\Users\Admin\AppData\Local\Temp\5xa4g.dll.exe"1⤵
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Roaming\twvsfshC:\Users\Admin\AppData\Roaming\twvsfsh1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2928 -s 2242⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Program crash
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\2F6.tmpMD5
50741b3f2d7debf5d2bed63d88404029
SHA156210388a627b926162b36967045be06ffb1aad3
SHA256f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c
SHA512fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3
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C:\Users\Admin\AppData\Roaming\twvsfshMD5
23627e96f5260b8e1d8fdc3da9250126
SHA1d68f46e0f9154972b5a0f1dae8e4380a8d227527
SHA256fed230e1f92000a5860c06228346b7925d8cce2ac1ebc1048ed5c26576c830f7
SHA512395afa4073a58f2644cb10923e7ed9cb5098ab44f8c4bb5efb3bf4c70f4b5f132511ada4d659667d64a743e18a3751082ce84b85de61566987859f2d29348398
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C:\Users\Admin\AppData\Roaming\twvsfshMD5
23627e96f5260b8e1d8fdc3da9250126
SHA1d68f46e0f9154972b5a0f1dae8e4380a8d227527
SHA256fed230e1f92000a5860c06228346b7925d8cce2ac1ebc1048ed5c26576c830f7
SHA512395afa4073a58f2644cb10923e7ed9cb5098ab44f8c4bb5efb3bf4c70f4b5f132511ada4d659667d64a743e18a3751082ce84b85de61566987859f2d29348398
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\Users\Admin\AppData\Local\Temp\2F6.tmpMD5
50741b3f2d7debf5d2bed63d88404029
SHA156210388a627b926162b36967045be06ffb1aad3
SHA256f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c
SHA512fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3
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memory/828-2-0x00000000052B1000-0x00000000052B2000-memory.dmpFilesize
4KB
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memory/828-3-0x0000000005420000-0x0000000005421000-memory.dmpFilesize
4KB
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memory/964-11-0x0000000004FA0000-0x0000000004FA1000-memory.dmpFilesize
4KB
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memory/964-12-0x0000000004FA0000-0x0000000004FA1000-memory.dmpFilesize
4KB
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memory/2920-5-0x0000000000790000-0x00000000007A6000-memory.dmpFilesize
88KB
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memory/2928-8-0x0000000005261000-0x0000000005262000-memory.dmpFilesize
4KB
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memory/2928-9-0x0000000005420000-0x0000000005421000-memory.dmpFilesize
4KB