Analysis
- max time kernel
452s - max time network
977s - platform
windows10-2004_x64 - resource
win10v2004-20240419-en - resource tags
- submitted
08/05/2024, 04:57
General
- Target 4kFSPCvmoj8Wsky.exe
- Size 710KB
- Sample240508-fllqcaee85
- SHA256 e4a398bfda61e5d4b2ed8551f4fbdfd070e992e777287b45c61537f4f5b7f875
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
december2nd.ddns.net:65024
-
december2n.duckdns.org:65024
-
2c009a56-c28c-48f4-8875-acf9e1222e9f
-
activate_away_mode
false
-
backup_connection_host
december2n.duckdns.org
- backup_dns_server
-
buffer_size
65535
-
build_time
2024-02-17T09:12:36.211032636Z
-
bypass_user_account_control
false
-
bypass_user_account_control_data
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
-
clear_access_control
false
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
65024
-
default_group
NO GREE
-
enable_debug_mode
true
-
gc_threshold
1.048576e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
-
mutex
2c009a56-c28c-48f4-8875-acf9e1222e9f
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
december2nd.ddns.net
- primary_dns_server
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
false
-
set_critical_process
true
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8000
Signatures
- NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Program Files directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 17 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 23 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4kFSPCvmoj8Wsky.exe"C:\Users\Admin\AppData\Local\Temp\4kFSPCvmoj8Wsky.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\4kFSPCvmoj8Wsky.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\obFpPBY.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\obFpPBY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8B48.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp90D6.tmp"3⤵
- Creates scheduled task(s)
-
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp93A6.tmp"3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_nm4myfcz.142.ps1
tmp8B48.tmp
tmp90D6.tmp
tmp93A6.tmp
memory/1864-107-0x0000000006D90000-0x0000000006D9E000-memory.dmp
memory/1864-113-0x0000000006E10000-0x0000000006E24000-memory.dmp
memory/1864-77-0x0000000005840000-0x000000000584C000-memory.dmp
memory/1864-105-0x0000000006D50000-0x0000000006D62000-memory.dmp
memory/1864-111-0x0000000006DD0000-0x0000000006DE4000-memory.dmp
memory/1864-108-0x0000000006DA0000-0x0000000006DB2000-memory.dmp
memory/1864-116-0x0000000006E70000-0x0000000006E84000-memory.dmp
memory/1864-115-0x0000000006E30000-0x0000000006E5E000-memory.dmp
memory/1864-114-0x0000000006E20000-0x0000000006E2E000-memory.dmp
memory/1864-106-0x0000000006D60000-0x0000000006D7A000-memory.dmp
memory/1864-76-0x0000000005830000-0x000000000583A000-memory.dmp
memory/1864-112-0x0000000006DE0000-0x0000000006DF0000-memory.dmp
memory/1864-79-0x0000000006600000-0x000000000660A000-memory.dmp
memory/1864-109-0x0000000006DB0000-0x0000000006DBE000-memory.dmp
memory/1864-110-0x0000000006DC0000-0x0000000006DCC000-memory.dmp
memory/1864-26-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1864-78-0x00000000064C0000-0x00000000064DE000-memory.dmp
memory/2396-15-0x0000000074F2E000-0x0000000074F2F000-memory.dmp
memory/2396-6-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/2396-1-0x00000000001B0000-0x0000000000268000-memory.dmp
memory/2396-2-0x0000000005060000-0x0000000005604000-memory.dmp
memory/2396-3-0x0000000004B50000-0x0000000004BE2000-memory.dmp
memory/2396-4-0x0000000004B30000-0x0000000004B3A000-memory.dmp
memory/2396-5-0x0000000004DB0000-0x0000000004E4C000-memory.dmp
memory/2396-31-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/2396-20-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/2396-0-0x0000000074F2E000-0x0000000074F2F000-memory.dmp
memory/2396-7-0x00000000078C0000-0x00000000078DC000-memory.dmp
memory/2396-10-0x00000000079E0000-0x0000000007A5C000-memory.dmp
memory/2396-9-0x0000000005F50000-0x0000000005F66000-memory.dmp
memory/2396-8-0x0000000005E10000-0x0000000005E1E000-memory.dmp
memory/3732-81-0x00000000710C0000-0x000000007110C000-memory.dmp
memory/3732-101-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/3732-23-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/3732-24-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/3732-25-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/3732-32-0x0000000005AF0000-0x0000000005E44000-memory.dmp
memory/3732-29-0x0000000005910000-0x0000000005976000-memory.dmp
memory/3732-30-0x0000000005A80000-0x0000000005AE6000-memory.dmp
memory/4604-60-0x00000000710C0000-0x000000007110C000-memory.dmp
memory/4604-91-0x0000000007BB0000-0x0000000007BC1000-memory.dmp
memory/4604-92-0x0000000007BE0000-0x0000000007BEE000-memory.dmp
memory/4604-93-0x0000000007BF0000-0x0000000007C04000-memory.dmp
memory/4604-94-0x0000000007CF0000-0x0000000007D0A000-memory.dmp
memory/4604-95-0x0000000007CD0000-0x0000000007CD8000-memory.dmp
memory/4604-80-0x0000000007C30000-0x0000000007CC6000-memory.dmp
memory/4604-75-0x0000000007820000-0x000000000782A000-memory.dmp
memory/4604-73-0x00000000080D0000-0x000000000874A000-memory.dmp
memory/4604-102-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/4604-74-0x00000000077A0000-0x00000000077BA000-memory.dmp
memory/4604-59-0x0000000006C50000-0x0000000006C82000-memory.dmp
memory/4604-70-0x0000000006C10000-0x0000000006C2E000-memory.dmp
memory/4604-71-0x0000000007660000-0x0000000007703000-memory.dmp
memory/4604-52-0x0000000006A30000-0x0000000006A7C000-memory.dmp
memory/4604-51-0x0000000006690000-0x00000000066AE000-memory.dmp
memory/4604-28-0x0000000005780000-0x00000000057A2000-memory.dmp
memory/4604-22-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/4604-18-0x00000000057C0000-0x0000000005DE8000-memory.dmp
memory/4604-19-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/4604-17-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/4604-16-0x0000000005080000-0x00000000050B6000-memory.dmp