Analysis
- max time kernel
145s - max time network
146s - platform
windows10_x64 - resource
win10v20210410 - submitted
31/05/2021, 10:50
General
- Target 7b6930215908595ec32905abba52d6e2.exe
- Size 1.7MB
- Sample210531-97wab8zvae
- SHA256 d0a381bd72a983718b806c00bb42ed91becdbbd43f79c0347bf7e1e56a2d6daf
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
wekeepworking.sytes.net:1144
-
wekeepworking12.sytes.net:1144
-
4614bd42-26c0-4da0-8e09-16890d37c1d7
-
activate_away_mode
true
-
backup_connection_host
wekeepworking12.sytes.net
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2021-03-08T01:12:24.009181836Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
1144
-
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
4614bd42-26c0-4da0-8e09-16890d37c1d7
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
wekeepworking.sytes.net
-
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.
- 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 11 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\7b6930215908595ec32905abba52d6e2.exe"C:\Users\Admin\AppData\Local\Temp\7b6930215908595ec32905abba52d6e2.exe"1⤵
- 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\jjROIm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAF8A.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"2⤵
-
-
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"2⤵
-
-
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1684-117-0x0000000000400000-0x000000000048C000-memory.dmp
memory/1684-119-0x0000000002F50000-0x0000000002F51000-memory.dmp
memory/1684-120-0x0000000002F51000-0x0000000002F52000-memory.dmp
memory/1692-114-0x0000000001410000-0x0000000001411000-memory.dmp