Analysis
- max time kernel
119s - max time network
152s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
14/01/2022, 05:12
General
- Target PO#0065026.doc.exe
- Size 1.5MB
- Sample220114-fvwlxaeffm
- SHA256 30e1ba61a63a27b668eee09f960a83d944e878c33b46f85ea86bacdf1427f4dd
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
185.140.53.132:1604
-
127.0.0.1:1604
-
1122355e-5fe3-470d-a458-8c4cf0355482
-
activate_away_mode
true
-
backup_connection_host
127.0.0.1
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2021-10-26T05:42:08.619849636Z
-
bypass_user_account_control
false
-
bypass_user_account_control_data
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
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
1604
-
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
1122355e-5fe3-470d-a458-8c4cf0355482
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
185.140.53.132
-
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
- Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 13 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\PO#0065026.doc.exe"C:\Users\Admin\AppData\Local\Temp\PO#0065026.doc.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\PO#0065026.doc.exe"C:\Users\Admin\AppData\Local\Temp\PO#0065026.doc.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
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAT Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpEDC.tmp"3⤵
- Creates scheduled task(s)
-
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAT Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp10A2.tmp"3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1272-142-0x0000000005790000-0x00000000057AA000-memory.dmp
memory/1272-143-0x0000000006A80000-0x0000000006A8E000-memory.dmp
memory/1272-153-0x0000000006D30000-0x0000000006D96000-memory.dmp
memory/1272-152-0x0000000006B60000-0x0000000006B74000-memory.dmp
memory/1272-151-0x0000000006B20000-0x0000000006B4E000-memory.dmp
memory/1272-150-0x0000000006B10000-0x0000000006B1E000-memory.dmp
memory/1272-149-0x0000000006AF0000-0x0000000006B04000-memory.dmp
memory/1272-125-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1272-127-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1272-128-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1272-129-0x00000000057B0000-0x0000000005CAE000-memory.dmp
memory/1272-130-0x0000000005350000-0x00000000053E2000-memory.dmp
memory/1272-131-0x00000000053F0000-0x000000000548C000-memory.dmp
memory/1272-132-0x0000000005290000-0x000000000529A000-memory.dmp
memory/1272-133-0x00000000052B0000-0x00000000057AE000-memory.dmp
memory/1272-148-0x0000000006AE0000-0x0000000006AF0000-memory.dmp
memory/1272-147-0x0000000006AD0000-0x0000000006AE4000-memory.dmp
memory/1272-146-0x0000000006AC0000-0x0000000006ACC000-memory.dmp
memory/1272-145-0x0000000006AB0000-0x0000000006ABE000-memory.dmp
memory/1272-138-0x0000000005320000-0x000000000532A000-memory.dmp
memory/1272-139-0x0000000005330000-0x000000000534E000-memory.dmp
memory/1272-140-0x0000000005620000-0x000000000562A000-memory.dmp
memory/1272-141-0x0000000005630000-0x0000000005642000-memory.dmp
memory/1272-144-0x0000000006AA0000-0x0000000006AB2000-memory.dmp
memory/3780-118-0x0000000007C70000-0x0000000007D02000-memory.dmp
memory/3780-115-0x0000000000C70000-0x0000000000DFE000-memory.dmp
memory/3780-116-0x0000000000C70000-0x0000000000DFE000-memory.dmp
memory/3780-119-0x00000000085D0000-0x0000000008920000-memory.dmp
memory/3780-117-0x00000000080D0000-0x00000000085CE000-memory.dmp
memory/3780-124-0x000000000B8E0000-0x000000000B94C000-memory.dmp
memory/3780-123-0x000000000B6A0000-0x000000000B73C000-memory.dmp
memory/3780-122-0x0000000008080000-0x0000000008090000-memory.dmp
memory/3780-121-0x0000000007DF0000-0x0000000007DFA000-memory.dmp
memory/3780-120-0x0000000007BD0000-0x00000000080CE000-memory.dmp