Analysis
- max time kernel
147s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
15/03/2024, 12:43
General
- Target cb70c14b7aa724c2d1cf6881f0a864897d953c367ddbc002594da76941ac376a.exe
- Size 341KB
- Sample240315-px53ssaf34
- SHA256 cb70c14b7aa724c2d1cf6881f0a864897d953c367ddbc002594da76941ac376a
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
172.111.188.199:8829
-
ce1d7a43-a4b9-4511-9ddf-1134841f2535
-
activate_away_mode
true
- backup_connection_host
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2020-02-02T10:25:40.952250336Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
8829
-
default_group
Billi
-
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
ce1d7a43-a4b9-4511-9ddf-1134841f2535
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
172.111.188.199
-
primary_dns_server
8.8.8.8
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
true
-
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.
- Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
- Looks for VMWare Tools registry key 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\cb70c14b7aa724c2d1cf6881f0a864897d953c367ddbc002594da76941ac376a.exe"C:\Users\Admin\AppData\Local\Temp\cb70c14b7aa724c2d1cf6881f0a864897d953c367ddbc002594da76941ac376a.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
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PqLXpPC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp44D4.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\cb70c14b7aa724c2d1cf6881f0a864897d953c367ddbc002594da76941ac376a.exe"{path}"2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
cb70c14b7aa724c2d1cf6881f0a864897d953c367ddbc002594da76941ac376a.exe.log
tmp44D4.tmp
memory/3308-4-0x0000000001790000-0x00000000017A0000-memory.dmp
memory/3308-15-0x00000000748F0000-0x0000000074EA1000-memory.dmp
memory/3308-0-0x00000000748F0000-0x0000000074EA1000-memory.dmp
memory/3308-5-0x0000000001790000-0x00000000017A0000-memory.dmp
memory/3308-2-0x0000000001790000-0x00000000017A0000-memory.dmp
memory/3308-3-0x00000000748F0000-0x0000000074EA1000-memory.dmp
memory/3308-1-0x00000000748F0000-0x0000000074EA1000-memory.dmp
memory/3672-11-0x0000000000400000-0x0000000000438000-memory.dmp
memory/3672-14-0x0000000001A80000-0x0000000001A90000-memory.dmp
memory/3672-16-0x00000000748F0000-0x0000000074EA1000-memory.dmp
memory/3672-17-0x00000000748F0000-0x0000000074EA1000-memory.dmp
memory/3672-19-0x0000000001A80000-0x0000000001A90000-memory.dmp
memory/3672-20-0x0000000001A80000-0x0000000001A90000-memory.dmp
memory/3672-21-0x00000000748F0000-0x0000000074EA1000-memory.dmp
memory/3672-22-0x0000000001A80000-0x0000000001A90000-memory.dmp