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Analysis
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max time kernel
133s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
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submitted
18/03/2023, 09:36
General
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Target
39e9e5fcf2eb808ebd4d627e66e4a041bf8dd9456d5e2621168361d69804e125.exe
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Size
4.2MB
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MD5
a1596dd108deecd3fbf941d40715bd9e
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SHA1
2e1e9981ea2e2f19a538f34d7f18401187b17917
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SHA256
39e9e5fcf2eb808ebd4d627e66e4a041bf8dd9456d5e2621168361d69804e125
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SHA512
ddf4460988b7899149478c95e4d247f2c477739883a3e61f99b37005d753aae4b7e12d30168743b932d72968ac4446a7814f29f07bfe31415322ace6e117b45f
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SSDEEP
98304:YRfGpuCYDDVEUYXn42HewTcx1KgzE5K6TSJqUpUH9sltMp:tuVDDVFLoUxz2TSJq8UH9+W
Malware Config
Signatures
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Glupteba
Glupteba is a modular loader written in Golang with various components.
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Glupteba payload 15 IoCs
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Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 3 IoCs
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UPX packed file 5 IoCs
Detects executables packed with UPX/modified UPX open source packer.
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Adds Run key to start application 2 TTPs 2 IoCs
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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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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
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Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
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Drops file in Windows directory 2 IoCs
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Program crash 1 IoCs
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Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies data under HKEY_USERS 64 IoCs
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 12 IoCs
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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\39e9e5fcf2eb808ebd4d627e66e4a041bf8dd9456d5e2621168361d69804e125.exe"C:\Users\Admin\AppData\Local\Temp\39e9e5fcf2eb808ebd4d627e66e4a041bf8dd9456d5e2621168361d69804e125.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\39e9e5fcf2eb808ebd4d627e66e4a041bf8dd9456d5e2621168361d69804e125.exe"C:\Users\Admin\AppData\Local\Temp\39e9e5fcf2eb808ebd4d627e66e4a041bf8dd9456d5e2621168361d69804e125.exe"2⤵
- Adds Run key to start application
- Checks for VirtualBox DLLs, possible anti-VM trick
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes4⤵
- Modifies Windows Firewall
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeC:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeC:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe4⤵
- Executes dropped EXE
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "csrss" /f5⤵
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "ScheduledUpdate" /f5⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 8243⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 736 -ip 7361⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
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Filesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
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Filesize
99KB
MD509031a062610d77d685c9934318b4170
SHA1880f744184e7774f3d14c1bb857e21cc7fe89a6d
SHA256778bd69af403df3c4e074c31b3850d71bf0e64524bea4272a802ca9520b379dd
SHA5129a276e1f0f55d35f2bf38eb093464f7065bdd30a660e6d1c62eed5e76d1fb2201567b89d9ae65d2d89dc99b142159e36fb73be8d5e08252a975d50544a7cda27
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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Filesize
4.2MB
MD5a1596dd108deecd3fbf941d40715bd9e
SHA12e1e9981ea2e2f19a538f34d7f18401187b17917
SHA25639e9e5fcf2eb808ebd4d627e66e4a041bf8dd9456d5e2621168361d69804e125
SHA512ddf4460988b7899149478c95e4d247f2c477739883a3e61f99b37005d753aae4b7e12d30168743b932d72968ac4446a7814f29f07bfe31415322ace6e117b45f
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Filesize
4.2MB
MD5a1596dd108deecd3fbf941d40715bd9e
SHA12e1e9981ea2e2f19a538f34d7f18401187b17917
SHA25639e9e5fcf2eb808ebd4d627e66e4a041bf8dd9456d5e2621168361d69804e125
SHA512ddf4460988b7899149478c95e4d247f2c477739883a3e61f99b37005d753aae4b7e12d30168743b932d72968ac4446a7814f29f07bfe31415322ace6e117b45f
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Filesize
42.8MB
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Filesize
8.1MB
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Filesize
8.1MB
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Filesize
8.1MB
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Filesize
8.5MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB
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Filesize
42.8MB