Analysis
- max time kernel
147s - max time network
158s - platform
windows10_x64 - resource
win10v20210408 - submitted
19/06/2021, 06:21
General
- Target 2ec4ce9dcf1fa1c8dfcf2bc174916c06.exe
- Size 1.3MB
- Sample210619-fbth9ayphe
- SHA256 4d01d1b24f4f7487669486becc7ff8b43a126f56ffb3d8fcce8c66b200412475
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
wekeepworking.sytes.net:83
-
wekeepworking12.sytes.net:83
-
4b81aa30-25dd-4ecd-9d49-787262961dd8
-
activate_away_mode
true
-
backup_connection_host
wekeepworking12.sytes.net
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2021-03-30T09:25:44.489554736Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
83
-
default_group
GRACE FOREVER
-
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
4b81aa30-25dd-4ecd-9d49-787262961dd8
-
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 9 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2ec4ce9dcf1fa1c8dfcf2bc174916c06.exe"C:\Users\Admin\AppData\Local\Temp\2ec4ce9dcf1fa1c8dfcf2bc174916c06.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\mKzOfgz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFBE5.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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/776-114-0x00000000025A0000-0x00000000025A1000-memory.dmp
memory/3164-117-0x0000000000400000-0x000000000048C000-memory.dmp
memory/3164-119-0x0000000002AC0000-0x0000000002AC1000-memory.dmp
memory/3164-120-0x0000000002AC1000-0x0000000002AC2000-memory.dmp