Analysis
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max time kernel
114s -
max time network
119s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
16-05-2021 02:30
Static task
static1
Behavioral task
behavioral1
Sample
8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe
Resource
win10v20210410
General
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Target
8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe
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Size
3.3MB
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MD5
a2e9f04fd2ce09694073d43ac62a5d0e
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SHA1
e98853e3512694b13425b82646cd2e869bae31bb
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SHA256
8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2
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SHA512
ca413738e4404368d05c0ceaf351c8de9f33189ec8821635211e3c35896265542911b4cedaf6caf988ab9f4d21c5781df1384c4c8219edcc54e921dee50b6732
Malware Config
Extracted
azorult
http://92.63.192.72/index.php
Signatures
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Azorult
An information stealer that was first discovered in 2016, targeting browsing history and passwords.
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Executes dropped EXE 2 IoCs
Processes:
busshost.exeYTLoader.exepid process 1652 busshost.exe 1928 YTLoader.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 4 IoCs
Processes:
8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exedescription ioc process File opened for modification C:\Program Files (x86)\LetsSee!\YTLoader.exe 8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe File opened for modification C:\Program Files (x86)\LetsSee!\busshost.exe 8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe File opened for modification C:\Program Files (x86)\LetsSee!\Uninstall.exe 8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe File created C:\Program Files (x86)\LetsSee!\Uninstall.ini 8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4076 1928 WerFault.exe YTLoader.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
YTLoader.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 YTLoader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString YTLoader.exe -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
YTLoader.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS YTLoader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer YTLoader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName YTLoader.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
WerFault.exepid process 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe 4076 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
YTLoader.exeWerFault.exedescription pid process Token: SeDebugPrivilege 1928 YTLoader.exe Token: SeRestorePrivilege 4076 WerFault.exe Token: SeBackupPrivilege 4076 WerFault.exe Token: SeDebugPrivilege 4076 WerFault.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exedescription pid process target process PID 3892 wrote to memory of 1652 3892 8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe busshost.exe PID 3892 wrote to memory of 1652 3892 8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe busshost.exe PID 3892 wrote to memory of 1652 3892 8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe busshost.exe PID 3892 wrote to memory of 1928 3892 8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe YTLoader.exe PID 3892 wrote to memory of 1928 3892 8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe YTLoader.exe PID 3892 wrote to memory of 1928 3892 8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe YTLoader.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe"C:\Users\Admin\AppData\Local\Temp\8d1b830b2dda89393dfb738e94f50ccdc80cc27067a70df9fc235d13deb36fa2.exe"1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\LetsSee!\busshost.exe"C:\Program Files (x86)\LetsSee!\busshost.exe"2⤵
- Executes dropped EXE
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C:\Program Files (x86)\LetsSee!\YTLoader.exe"C:\Program Files (x86)\LetsSee!\YTLoader.exe"2⤵
- Executes dropped EXE
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 16083⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Program Files (x86)\LetsSee!\YTLoader.exeMD5
c53d2de8becdaf58caba89a297455c65
SHA1c60da079393025e63475683375e0a045cefa3473
SHA2567d6eb1a70a0fc72adbcf03c05283b40e1ff656d655dbacf4e20fd6d635d46272
SHA512a189cba278167f104ae0b27432b5c9a6153b2d8c3d0b6db82d5b71db7d23b9f0226519cc816ba0f5c360f9b029b0bef1636ab41f4ad742808824334e30f65878
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C:\Program Files (x86)\LetsSee!\YTLoader.exeMD5
c53d2de8becdaf58caba89a297455c65
SHA1c60da079393025e63475683375e0a045cefa3473
SHA2567d6eb1a70a0fc72adbcf03c05283b40e1ff656d655dbacf4e20fd6d635d46272
SHA512a189cba278167f104ae0b27432b5c9a6153b2d8c3d0b6db82d5b71db7d23b9f0226519cc816ba0f5c360f9b029b0bef1636ab41f4ad742808824334e30f65878
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C:\Program Files (x86)\LetsSee!\busshost.exeMD5
c0fb247ef64ec4b9cf799a6fcd18180e
SHA192870e3882380df04aba8ff5a8f2458928b980e9
SHA2563c984137c3731017497bddcb5b7dcd920a765bdb80e8af77f4ef61a925a9f0b9
SHA512a7fc31296334519be557c329ff2ca4a13290b5c81d978940370da8c962bc162077fcaa21b484c9c9ce55b89f49ffb2ea44ec74193d7b4d91d84eca96740f18d4
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C:\Program Files (x86)\LetsSee!\busshost.exeMD5
c0fb247ef64ec4b9cf799a6fcd18180e
SHA192870e3882380df04aba8ff5a8f2458928b980e9
SHA2563c984137c3731017497bddcb5b7dcd920a765bdb80e8af77f4ef61a925a9f0b9
SHA512a7fc31296334519be557c329ff2ca4a13290b5c81d978940370da8c962bc162077fcaa21b484c9c9ce55b89f49ffb2ea44ec74193d7b4d91d84eca96740f18d4
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memory/1652-114-0x0000000000000000-mapping.dmp
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memory/1652-137-0x0000000000400000-0x0000000000533000-memory.dmpFilesize
1.2MB
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memory/1928-125-0x0000000004EB0000-0x0000000004EB5000-memory.dmpFilesize
20KB
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memory/1928-129-0x0000000004F10000-0x0000000004F11000-memory.dmpFilesize
4KB
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memory/1928-123-0x0000000005130000-0x0000000005585000-memory.dmpFilesize
4.3MB
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memory/1928-124-0x0000000004EA0000-0x0000000004EA9000-memory.dmpFilesize
36KB
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memory/1928-120-0x0000000000360000-0x0000000000361000-memory.dmpFilesize
4KB
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memory/1928-126-0x0000000004F00000-0x0000000004F01000-memory.dmpFilesize
4KB
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memory/1928-127-0x0000000004EC0000-0x0000000004EC5000-memory.dmpFilesize
20KB
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memory/1928-128-0x0000000004EF0000-0x0000000004EF1000-memory.dmpFilesize
4KB
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memory/1928-130-0x0000000004EE0000-0x0000000004EE8000-memory.dmpFilesize
32KB
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memory/1928-122-0x00000000028A0000-0x00000000028A4000-memory.dmpFilesize
16KB
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memory/1928-131-0x0000000004F30000-0x0000000004F31000-memory.dmpFilesize
4KB
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memory/1928-132-0x0000000004F40000-0x0000000004F41000-memory.dmpFilesize
4KB
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memory/1928-133-0x0000000004F50000-0x0000000004F51000-memory.dmpFilesize
4KB
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memory/1928-134-0x0000000004F60000-0x0000000004F61000-memory.dmpFilesize
4KB
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memory/1928-135-0x0000000005090000-0x0000000005091000-memory.dmpFilesize
4KB
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memory/1928-136-0x00000000050A0000-0x00000000050A1000-memory.dmpFilesize
4KB
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memory/1928-116-0x0000000000000000-mapping.dmp