Analysis
- max time kernel
145s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
26/01/2024, 11:16
General
- Target gunzipped.exe
- Size 594KB
- Sample240126-nc6m6adfap
- SHA256 4ba298859e61cb9c39d9d4a4d556fe6357ce0901d5d4ac6f78e6e15ced75cccb
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
103.167.90.225:4251
-
tom7.work.gd:4251
-
948c774c-c1d8-4f57-8709-ed674b265adb
-
activate_away_mode
true
-
backup_connection_host
tom7.work.gd
- backup_dns_server
-
buffer_size
65535
-
build_time
2023-11-01T19:46:43.902018636Z
-
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
4251
-
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
948c774c-c1d8-4f57-8709-ed674b265adb
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
103.167.90.225
-
primary_dns_server
tom7.work.gd
-
request_elevation
true
-
restart_delay
5000
-
run_delay
10
-
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
- 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 8 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\gunzipped.exe"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp80B9.tmp"3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
gunzipped.exe.log
tmp80B9.tmp
memory/1616-30-0x0000000006D90000-0x0000000006D9C000-memory.dmp
memory/1616-22-0x00000000065F0000-0x000000000660E000-memory.dmp
memory/1616-41-0x0000000005750000-0x0000000005760000-memory.dmp
memory/1616-40-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/1616-38-0x0000000007030000-0x0000000007096000-memory.dmp
memory/1616-37-0x0000000006E40000-0x0000000006E54000-memory.dmp
memory/1616-36-0x0000000006E10000-0x0000000006E3E000-memory.dmp
memory/1616-35-0x0000000006E00000-0x0000000006E0E000-memory.dmp
memory/1616-34-0x0000000006DE0000-0x0000000006DF4000-memory.dmp
memory/1616-11-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1616-33-0x0000000006DC0000-0x0000000006DD0000-memory.dmp
memory/1616-15-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/1616-32-0x0000000006DB0000-0x0000000006DC4000-memory.dmp
memory/1616-16-0x0000000005750000-0x0000000005760000-memory.dmp
memory/1616-31-0x0000000006DA0000-0x0000000006DAE000-memory.dmp
memory/1616-21-0x0000000005580000-0x000000000558A000-memory.dmp
memory/1616-29-0x0000000006D80000-0x0000000006D92000-memory.dmp
memory/1616-26-0x0000000006D30000-0x0000000006D42000-memory.dmp
memory/1616-23-0x0000000006710000-0x000000000671A000-memory.dmp
memory/1616-27-0x0000000006D40000-0x0000000006D5A000-memory.dmp
memory/1616-28-0x0000000006D70000-0x0000000006D7E000-memory.dmp
memory/2240-3-0x0000000005320000-0x00000000053B2000-memory.dmp
memory/2240-0-0x0000000000870000-0x000000000090A000-memory.dmp
memory/2240-1-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/2240-14-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/2240-2-0x00000000059B0000-0x0000000005F54000-memory.dmp
memory/2240-10-0x0000000008FF0000-0x000000000908C000-memory.dmp
memory/2240-9-0x00000000069C0000-0x0000000006A34000-memory.dmp
memory/2240-8-0x0000000006700000-0x000000000670C000-memory.dmp
memory/2240-7-0x00000000065D0000-0x00000000065D8000-memory.dmp
memory/2240-6-0x0000000005670000-0x0000000005688000-memory.dmp
memory/2240-5-0x0000000005310000-0x000000000531A000-memory.dmp
memory/2240-4-0x00000000052C0000-0x00000000052D0000-memory.dmp