Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
05/11/2024, 04:07
General
- Target a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe
- Size 767KB
- Sample241105-epvxravekl
- SHA256 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
66.63.187.113:1664
-
a376f716-2f77-4943-a431-3a3bcb53b7c0
-
activate_away_mode
true
-
backup_connection_host
66.63.187.113
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2024-08-05T03:49:33.827385136Z
-
bypass_user_account_control
false
-
bypass_user_account_control_data
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
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
1664
-
default_group
CAT
-
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
a376f716-2f77-4943-a431-3a3bcb53b7c0
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
66.63.187.113
-
primary_dns_server
8.8.8.8
-
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.
- Nanocore family
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 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
- Checks whether UAC is enabled 1 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).
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- 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\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFF40.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "ARP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp89.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
__PSScriptPolicyTest_bb44nowa.30j.ps1
tmp89.tmp
tmpFF40.tmp
memory/1028-57-0x00000000060B0000-0x00000000060CE000-memory.dmp
memory/1028-46-0x0000000006140000-0x0000000006172000-memory.dmp
memory/1028-76-0x00000000070B0000-0x00000000070BE000-memory.dmp
memory/1028-75-0x0000000007080000-0x0000000007091000-memory.dmp
memory/1028-74-0x0000000007100000-0x0000000007196000-memory.dmp
memory/1028-73-0x0000000006EF0000-0x0000000006EFA000-memory.dmp
memory/1028-72-0x0000000006E80000-0x0000000006E9A000-memory.dmp
memory/1028-71-0x00000000074C0000-0x0000000007B3A000-memory.dmp
memory/1028-58-0x0000000006B70000-0x0000000006C13000-memory.dmp
memory/1028-78-0x00000000071C0000-0x00000000071DA000-memory.dmp
memory/1028-47-0x00000000706C0000-0x000000007070C000-memory.dmp
memory/1028-77-0x00000000070C0000-0x00000000070D4000-memory.dmp
memory/1028-16-0x0000000004580000-0x00000000045B6000-memory.dmp
memory/1028-17-0x0000000074A70000-0x0000000075220000-memory.dmp
memory/1028-21-0x0000000004D40000-0x0000000005368000-memory.dmp
memory/1028-22-0x0000000004B90000-0x0000000004BB2000-memory.dmp
memory/1028-24-0x0000000005420000-0x0000000005486000-memory.dmp
memory/1028-23-0x0000000004CB0000-0x0000000004D16000-memory.dmp
memory/1028-79-0x00000000071A0000-0x00000000071A8000-memory.dmp
memory/1028-34-0x0000000005590000-0x00000000058E4000-memory.dmp
memory/1028-35-0x0000000074A70000-0x0000000075220000-memory.dmp
memory/1028-82-0x0000000074A70000-0x0000000075220000-memory.dmp
memory/1028-39-0x0000000005B60000-0x0000000005B7E000-memory.dmp
memory/1028-40-0x00000000060D0000-0x000000000611C000-memory.dmp
memory/1436-42-0x00000000055D0000-0x00000000055DA000-memory.dmp
memory/1436-65-0x0000000006D00000-0x0000000006D14000-memory.dmp
memory/1436-44-0x0000000006580000-0x000000000658A000-memory.dmp
memory/1436-43-0x0000000006550000-0x000000000656E000-memory.dmp
memory/1436-15-0x0000000074A70000-0x0000000075220000-memory.dmp
memory/1436-85-0x0000000074A70000-0x0000000075220000-memory.dmp
memory/1436-13-0x0000000074A70000-0x0000000075220000-memory.dmp
memory/1436-11-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1436-60-0x0000000006C90000-0x0000000006CA2000-memory.dmp
memory/1436-61-0x0000000006CA0000-0x0000000006CBA000-memory.dmp
memory/1436-66-0x0000000006D10000-0x0000000006D20000-memory.dmp
memory/1436-70-0x0000000006D90000-0x0000000006DA4000-memory.dmp
memory/1436-69-0x0000000006D60000-0x0000000006D8E000-memory.dmp
memory/1436-68-0x0000000006D50000-0x0000000006D5E000-memory.dmp
memory/1436-67-0x0000000006D20000-0x0000000006D34000-memory.dmp
memory/1436-84-0x0000000074A70000-0x0000000075220000-memory.dmp
memory/1436-64-0x0000000006CF0000-0x0000000006CFE000-memory.dmp
memory/1436-63-0x0000000006CE0000-0x0000000006CF2000-memory.dmp
memory/1436-62-0x0000000006CD0000-0x0000000006CDE000-memory.dmp
memory/3320-10-0x0000000004530000-0x00000000045AA000-memory.dmp
memory/3320-9-0x0000000074A70000-0x0000000075220000-memory.dmp
memory/3320-8-0x0000000074A7E000-0x0000000074A7F000-memory.dmp
memory/3320-7-0x0000000005080000-0x000000000509C000-memory.dmp
memory/3320-6-0x0000000004E20000-0x0000000004EBC000-memory.dmp
memory/3320-5-0x0000000074A70000-0x0000000075220000-memory.dmp
memory/3320-4-0x0000000004B80000-0x0000000004B8A000-memory.dmp
memory/3320-3-0x0000000004B90000-0x0000000004C22000-memory.dmp
memory/3320-2-0x00000000050A0000-0x0000000005644000-memory.dmp
memory/3320-1-0x00000000000A0000-0x0000000000166000-memory.dmp
memory/3320-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp
memory/3320-14-0x0000000074A70000-0x0000000075220000-memory.dmp