Analysis
- max time kernel
110s - max time network
151s - platform
windows10_x64 - resource
win10-en-20211014 - submitted
15/11/2021, 04:17
General
- Target cliff.kuhfeldt's CV.exe
- Size 764KB
- Sample211115-ewdl2sebdr
- SHA256 40bbc3b0772a0365c7c91858d53373935cd72bbe27a431c976cafa12a2305d2e
Score
10/10
Malware Config
Extracted
Family
-
nanocore
Version
-
1.2.2.0
C2
-
dera31.ddns.net:1187
-
195.133.18.211:1187
Mutex
-
f4157c11-54e5-4893-8a60-6856b8471d8c
Attributes
-
activate_away_mode
true
-
backup_connection_host
195.133.18.211
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2021-08-13T08:45:25.192912336Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
1187
-
default_group
Default
-
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
f4157c11-54e5-4893-8a60-6856b8471d8c
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
dera31.ddns.net
-
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.
- suricata: ET MALWARE Possible NanoCore C2 60B
suricata: ET MALWARE Possible NanoCore C2 60B
- 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
- Suspicious behavior: EnumeratesProcesses 8 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\cliff.kuhfeldt's CV.exe"C:\Users\Admin\AppData\Local\Temp\cliff.kuhfeldt's CV.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\cliff.kuhfeldt's CV.exe"C:\Users\Admin\AppData\Local\Temp\cliff.kuhfeldt's CV.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\cliff.kuhfeldt's CV.exe"C:\Users\Admin\AppData\Local\Temp\cliff.kuhfeldt's CV.exe"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
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1288-116-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1288-119-0x0000000002CF0000-0x0000000002CF1000-memory.dmp
memory/2212-115-0x0000000002DD0000-0x0000000002DD1000-memory.dmp