Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
06/01/2024, 09:35
Static task
static1
Behavioral task
behavioral1
Sample
45e50d930432d9cedc34dfd29d0ef10d.exe
Resource
win7-20231215-en
General
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Target
45e50d930432d9cedc34dfd29d0ef10d.exe
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Size
687KB
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MD5
45e50d930432d9cedc34dfd29d0ef10d
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SHA1
aaffe2041e2fc8619a24d862c1ca1abae5fe1f71
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SHA256
0aef1c6bc3804b522b5793742d05d6346a951c1ccf4000ab0dd3b37a1c362c14
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SHA512
ddc600c5fccfc20ecdc09dd852e213be9b7d5aeef2998da0f31f510845ca49a3162fc466141525c204965f92150794d445eec719f4209306c1e25cffd04fd01a
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SSDEEP
12288:n+J70shAUfvBweg+wToULrNMmnjx05WqV+60RiVycWTQLbOQDFi14Bp/j+PIH3ms:n+J70cLvBwP+8oUSmntIV+60wST8OQpi
Malware Config
Extracted
nanocore
1.2.2.0
microsoftsecurity.sytes.net:1177
backupnew.duckdns.org:1177
f0d143be-967c-4293-98d3-3a1e128b5398
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activate_away_mode
true
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backup_connection_host
backupnew.duckdns.org
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2021-05-07T22:19:05.511961436Z
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bypass_user_account_control
false
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bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
false
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connect_delay
4000
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connection_port
1177
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default_group
BotNet
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enable_debug_mode
true
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gc_threshold
1.048576e+07
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keep_alive_timeout
30000
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keyboard_logging
false
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lan_timeout
2500
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max_packet_size
1.048576e+07
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mutex
f0d143be-967c-4293-98d3-3a1e128b5398
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
microsoftsecurity.sytes.net
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primary_dns_server
8.8.8.8
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request_elevation
false
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restart_delay
5000
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run_delay
0
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run_on_startup
false
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set_critical_process
true
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timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
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wan_timeout
8000
Signatures
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Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions 45e50d930432d9cedc34dfd29d0ef10d.exe -
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools 45e50d930432d9cedc34dfd29d0ef10d.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 45e50d930432d9cedc34dfd29d0ef10d.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 45e50d930432d9cedc34dfd29d0ef10d.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation 45e50d930432d9cedc34dfd29d0ef10d.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAT Subsystem = "C:\\Program Files (x86)\\NAT Subsystem\\natss.exe" 45e50d930432d9cedc34dfd29d0ef10d.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 45e50d930432d9cedc34dfd29d0ef10d.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 45e50d930432d9cedc34dfd29d0ef10d.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 45e50d930432d9cedc34dfd29d0ef10d.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2428 set thread context of 3732 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 104 -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\NAT Subsystem\natss.exe 45e50d930432d9cedc34dfd29d0ef10d.exe File opened for modification C:\Program Files (x86)\NAT Subsystem\natss.exe 45e50d930432d9cedc34dfd29d0ef10d.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4404 schtasks.exe 4176 schtasks.exe 1476 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 3732 45e50d930432d9cedc34dfd29d0ef10d.exe 3732 45e50d930432d9cedc34dfd29d0ef10d.exe 3732 45e50d930432d9cedc34dfd29d0ef10d.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3732 45e50d930432d9cedc34dfd29d0ef10d.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2428 45e50d930432d9cedc34dfd29d0ef10d.exe Token: SeDebugPrivilege 3732 45e50d930432d9cedc34dfd29d0ef10d.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 2428 wrote to memory of 1476 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 107 PID 2428 wrote to memory of 1476 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 107 PID 2428 wrote to memory of 1476 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 107 PID 2428 wrote to memory of 1692 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 106 PID 2428 wrote to memory of 1692 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 106 PID 2428 wrote to memory of 1692 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 106 PID 2428 wrote to memory of 4316 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 105 PID 2428 wrote to memory of 4316 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 105 PID 2428 wrote to memory of 4316 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 105 PID 2428 wrote to memory of 3732 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 104 PID 2428 wrote to memory of 3732 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 104 PID 2428 wrote to memory of 3732 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 104 PID 2428 wrote to memory of 3732 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 104 PID 2428 wrote to memory of 3732 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 104 PID 2428 wrote to memory of 3732 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 104 PID 2428 wrote to memory of 3732 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 104 PID 2428 wrote to memory of 3732 2428 45e50d930432d9cedc34dfd29d0ef10d.exe 104 PID 3732 wrote to memory of 4176 3732 45e50d930432d9cedc34dfd29d0ef10d.exe 103 PID 3732 wrote to memory of 4176 3732 45e50d930432d9cedc34dfd29d0ef10d.exe 103 PID 3732 wrote to memory of 4176 3732 45e50d930432d9cedc34dfd29d0ef10d.exe 103 PID 3732 wrote to memory of 4404 3732 45e50d930432d9cedc34dfd29d0ef10d.exe 101 PID 3732 wrote to memory of 4404 3732 45e50d930432d9cedc34dfd29d0ef10d.exe 101 PID 3732 wrote to memory of 4404 3732 45e50d930432d9cedc34dfd29d0ef10d.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\45e50d930432d9cedc34dfd29d0ef10d.exe"C:\Users\Admin\AppData\Local\Temp\45e50d930432d9cedc34dfd29d0ef10d.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2428 -
C:\Users\Admin\AppData\Local\Temp\45e50d930432d9cedc34dfd29d0ef10d.exe"{path}"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3732
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C:\Users\Admin\AppData\Local\Temp\45e50d930432d9cedc34dfd29d0ef10d.exe"{path}"2⤵PID:4316
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C:\Users\Admin\AppData\Local\Temp\45e50d930432d9cedc34dfd29d0ef10d.exe"{path}"2⤵PID:1692
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eBopYzBwUYOW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBE10.tmp"2⤵
- Creates scheduled task(s)
PID:1476
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAT Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBFE6.tmp"1⤵
- Creates scheduled task(s)
PID:4404
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAT Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBFC6.tmp"1⤵
- Creates scheduled task(s)
PID:4176
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD53a2eceb8a3473fb926d61bcc8ce25bf2
SHA1bc84685f7494437e41f819825416611d96145056
SHA256f4ce62f408b7781fba0d5cb84995beabe1c4cc27e8ffeac51b200268e088fe7d
SHA512b5974491002a3b204a1c2b5c89fc8c74b679f9083fc843d881635c5c7034a6fd0b3ceebf957f5561acc0d599f84593666a65b396c2ebdb72d30ae9e558e16ce6