Analysis
- max time kernel
114s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
19/01/2022, 15:42
General
- Target T4EkbDIoVAPcUMQ.exe
- Size 921KB
- Sample220119-s5escsbbfq
- SHA256 e3a4b7f4c06b234b71769adaa1df2b4e00b7c1953ffcc9216a89b2c8a673de47
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
185.140.53.15:8000
-
14fe336b-7457-406c-9864-b70110a2260f
-
activate_away_mode
true
-
backup_connection_host
185.140.53.15
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2021-07-03T04:03:36.347613436Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
8000
-
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
14fe336b-7457-406c-9864-b70110a2260f
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
185.140.53.15
-
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.
- suricata: ET MALWARE Possible NanoCore C2 60B
suricata: ET MALWARE Possible NanoCore C2 60B
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- 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 7 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 5 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\T4EkbDIoVAPcUMQ.exe"C:\Users\Admin\AppData\Local\Temp\T4EkbDIoVAPcUMQ.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FhAmaslG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF001.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p1⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/2064-130-0x0000000000030000-0x000000000011C000-memory.dmp
memory/2064-131-0x0000000004A60000-0x0000000004AFC000-memory.dmp
memory/2064-132-0x00000000050C0000-0x0000000005664000-memory.dmp
memory/2064-133-0x0000000004BB0000-0x0000000004C42000-memory.dmp
memory/2064-134-0x0000000004B10000-0x00000000050B4000-memory.dmp
memory/2064-135-0x0000000004B60000-0x0000000004B6A000-memory.dmp
memory/2064-136-0x0000000004CB0000-0x0000000004D06000-memory.dmp
memory/2564-138-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2564-139-0x0000000004BC0000-0x0000000004D01000-memory.dmp
memory/2564-140-0x0000000004BC0000-0x0000000004D01000-memory.dmp
memory/2564-141-0x0000000006490000-0x00000000064F6000-memory.dmp