Analysis
- max time kernel
146s - max time network
152s - platform
windows10_x64 - resource
win10v20210408 - submitted
03/07/2021, 06:13
General
- Target QE20-MCA TS-IPBCP-07022021.xlsx.exe
- Size 790KB
- Sample210703-t8kdjewvb6
- SHA256 c108d006f7a8bf68d4152ce29feb6d5d08c39c53c59f82c19c32c618c77f3f8d
Score
10/10
Malware Config
Extracted
Family
-
nanocore
Version
-
1.2.2.0
C2
-
mec.sytes.net:3259
Mutex
-
9358a53f-433c-42f5-bd3f-14ae4da528cf
Attributes
-
activate_away_mode
true
-
backup_connection_host
mec.sytes.net
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2021-04-04T14:41:53.527071936Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
true
-
connect_delay
4000
-
connection_port
3259
-
default_group
Mine
-
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
9358a53f-433c-42f5-bd3f-14ae4da528cf
-
mutex_timeout
5000
-
prevent_system_sleep
true
-
primary_connection_host
mec.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.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- 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 6 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\QE20-MCA TS-IPBCP-07022021.xlsx.exe"C:\Users\Admin\AppData\Local\Temp\QE20-MCA TS-IPBCP-07022021.xlsx.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\pYQQdrbwfRwk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4A39.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\QE20-MCA TS-IPBCP-07022021.xlsx.exe"{path}"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\QE20-MCA TS-IPBCP-07022021.xlsx.exe"{path}"2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/416-114-0x00000000031F0000-0x00000000031F1000-memory.dmp
memory/2964-117-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2964-120-0x0000000001450000-0x0000000001451000-memory.dmp