Analysis
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max time kernel
146s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
21-11-2022 10:02
Static task
static1
Behavioral task
behavioral1
Sample
d3ad8635898120745699b31093d2c90207b7b1dae3fd32a62fcdd63a5e37d878.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
d3ad8635898120745699b31093d2c90207b7b1dae3fd32a62fcdd63a5e37d878.exe
Resource
win10v2004-20221111-en
General
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Target
d3ad8635898120745699b31093d2c90207b7b1dae3fd32a62fcdd63a5e37d878.exe
-
Size
183KB
-
MD5
2151c09c1db2a9a08ca36b2c77c84630
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SHA1
e104bb0bf94d0b48c2d9751ed6e1cac442e5b46c
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SHA256
d3ad8635898120745699b31093d2c90207b7b1dae3fd32a62fcdd63a5e37d878
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SHA512
fb59dd97098d932ead43bd8783ecbfb6ef04c54c94035d41a502e3636009a3bab106d72e0b8f5425f2bfad9ccd02a78d6e77b2f367b43a8559e30b4c376d9159
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SSDEEP
3072:WhZMMCvQj0eTvmQM3gu+lJw+uL8mhbqIXE/iOMHg2c8uXsAV:kZmUXTvmQgguDLOixHg2c8iV
Malware Config
Signatures
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resource yara_rule behavioral2/files/0x000a000000022db1-133.dat aspack_v212_v242 behavioral2/files/0x000a000000022db1-134.dat aspack_v212_v242 behavioral2/files/0x0006000000022dbc-141.dat aspack_v212_v242 behavioral2/files/0x0006000000022dbc-140.dat aspack_v212_v242 -
Executes dropped EXE 1 IoCs
pid Process 1520 16b04c30.exe -
Sets DLL path for service in the registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll" 16b04c30.exe -
resource yara_rule behavioral2/files/0x000a000000022db1-133.dat upx behavioral2/files/0x000a000000022db1-134.dat upx behavioral2/memory/1520-136-0x00000000006B0000-0x00000000006D4000-memory.dmp upx behavioral2/memory/1520-135-0x00000000006B0000-0x00000000006D4000-memory.dmp upx behavioral2/memory/1520-138-0x00000000006B0000-0x00000000006D4000-memory.dmp upx behavioral2/memory/2512-143-0x0000000074930000-0x0000000074954000-memory.dmp upx behavioral2/memory/2512-142-0x0000000074930000-0x0000000074954000-memory.dmp upx behavioral2/files/0x0006000000022dbc-141.dat upx behavioral2/files/0x0006000000022dbc-140.dat upx behavioral2/memory/2512-146-0x0000000074930000-0x0000000074954000-memory.dmp upx behavioral2/memory/1520-145-0x00000000006B0000-0x00000000006D4000-memory.dmp upx -
Loads dropped DLL 1 IoCs
pid Process 2512 Svchost.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\2E260874.tmp 16b04c30.exe File opened for modification C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll 16b04c30.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1520 16b04c30.exe 1520 16b04c30.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2168 wrote to memory of 1520 2168 d3ad8635898120745699b31093d2c90207b7b1dae3fd32a62fcdd63a5e37d878.exe 85 PID 2168 wrote to memory of 1520 2168 d3ad8635898120745699b31093d2c90207b7b1dae3fd32a62fcdd63a5e37d878.exe 85 PID 2168 wrote to memory of 1520 2168 d3ad8635898120745699b31093d2c90207b7b1dae3fd32a62fcdd63a5e37d878.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\d3ad8635898120745699b31093d2c90207b7b1dae3fd32a62fcdd63a5e37d878.exe"C:\Users\Admin\AppData\Local\Temp\d3ad8635898120745699b31093d2c90207b7b1dae3fd32a62fcdd63a5e37d878.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2168 -
C:\16b04c30.exeC:\16b04c30.exe2⤵
- Executes dropped EXE
- Sets DLL path for service in the registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
PID:1520
-
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C:\Windows\SysWOW64\Svchost.exeC:\Windows\SysWOW64\Svchost.exe -k netsvcs -s FastUserSwitchingCompatibility1⤵
- Loads dropped DLL
PID:2512
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
143KB
MD5d4b4d82ddb32ea8de49571df94b08e14
SHA17f0702725855422e5ded1dd247522ccb982b162e
SHA256f9e7662a3eee2174d38ca7b6b598120861aab6456d1bf9da74f8b3e9dabec340
SHA512cafd822d17eb7ce96f21570329ca223bf7e8f5cdebd4705fd8fe1b7828b0d40d6a0b2c909fc5f561890787a9f7ccb2d3bf77c578019227cd7ff6a4902c49d256
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Filesize
143KB
MD5d4b4d82ddb32ea8de49571df94b08e14
SHA17f0702725855422e5ded1dd247522ccb982b162e
SHA256f9e7662a3eee2174d38ca7b6b598120861aab6456d1bf9da74f8b3e9dabec340
SHA512cafd822d17eb7ce96f21570329ca223bf7e8f5cdebd4705fd8fe1b7828b0d40d6a0b2c909fc5f561890787a9f7ccb2d3bf77c578019227cd7ff6a4902c49d256
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Filesize
720B
MD59973dc7f209852751d364a45b698c5b1
SHA1a038c79271ee07e759b65bd4739d9b587d2e328e
SHA25676b7b388ba086022fe6d2b72194aa4f9c781e414e4c8896b523e53ff92ca5075
SHA5122a75b6814df48a8f679a044326675e255be5497099baca4b0ec911993978cc610021fec92b4f0d951aab7363c4ea6152fd91bfed52ca72ab09145cbf34aeb065
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Filesize
143KB
MD5ab5db2af8f8e8f5ce0defc51d21e8963
SHA1577e8eb5d7f97eed02a18704b30dfff7eac1260a
SHA2564ec4fdedcdcddbc6c81d02a0080d3fda417cb4fa16c4b1fd2f83a3e4e25f49ce
SHA512e391f0e450d1fbe40165a21eaadcdfeb46fb1a92bd395e2a3c466cbc99ee8081729f24200ee619af162d06df5d4159d77959d8f374597616d1b1e18dcfb748fa
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Filesize
143KB
MD5ab5db2af8f8e8f5ce0defc51d21e8963
SHA1577e8eb5d7f97eed02a18704b30dfff7eac1260a
SHA2564ec4fdedcdcddbc6c81d02a0080d3fda417cb4fa16c4b1fd2f83a3e4e25f49ce
SHA512e391f0e450d1fbe40165a21eaadcdfeb46fb1a92bd395e2a3c466cbc99ee8081729f24200ee619af162d06df5d4159d77959d8f374597616d1b1e18dcfb748fa