Analysis
- max time kernel
85s - max time network
149s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
03/01/2022, 14:33
General
- Target HSS.exe
- Size 613KB
- Sample220103-rxbkashhap
- SHA256 8de953938b8fb2d222892012da5758cefe50de064f61416c2bc2c6e6f019352c
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
godisgood1.hopto.org:7712
-
9ed8d108-2eb1-4e23-9679-783796e4baff
-
activate_away_mode
true
- backup_connection_host
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2021-04-23T17:16:53.813634136Z
-
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
7712
-
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
9ed8d108-2eb1-4e23-9679-783796e4baff
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
godisgood1.hopto.org
-
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 6 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\HSS.exe"C:\Users\Admin\AppData\Local\Temp\HSS.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\HSS.exe"C:\Users\Admin\AppData\Local\Temp\HSS.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 "WAN Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2B61.tmp"3⤵
- Creates scheduled task(s)
-
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WAN Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2BFF.tmp"3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3436-121-0x0000000005300000-0x0000000005392000-memory.dmp
memory/3436-120-0x0000000005E00000-0x0000000005E12000-memory.dmp
memory/3436-122-0x0000000006130000-0x00000000061CC000-memory.dmp
memory/3436-123-0x00000000062D0000-0x000000000633E000-memory.dmp
memory/3436-115-0x0000000000990000-0x0000000000A30000-memory.dmp
memory/3436-119-0x00000000053B0000-0x00000000053BA000-memory.dmp
memory/3436-118-0x00000000053D0000-0x0000000005462000-memory.dmp
memory/3436-117-0x00000000058D0000-0x0000000005DCE000-memory.dmp
memory/3436-116-0x0000000000990000-0x0000000000A30000-memory.dmp
memory/4412-124-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4412-142-0x0000000006440000-0x000000000645A000-memory.dmp
memory/4412-131-0x00000000053A0000-0x000000000543C000-memory.dmp
memory/4412-132-0x0000000005290000-0x000000000529A000-memory.dmp
memory/4412-129-0x0000000005760000-0x0000000005C5E000-memory.dmp
memory/4412-127-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4412-128-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4412-137-0x00000000055A0000-0x00000000055AA000-memory.dmp
memory/4412-138-0x0000000005740000-0x000000000575E000-memory.dmp
memory/4412-139-0x0000000006420000-0x000000000642A000-memory.dmp
memory/4412-140-0x0000000005260000-0x000000000575E000-memory.dmp
memory/4412-141-0x0000000006430000-0x0000000006442000-memory.dmp
memory/4412-130-0x0000000005300000-0x0000000005392000-memory.dmp
memory/4412-143-0x0000000006BD0000-0x0000000006BDE000-memory.dmp
memory/4412-144-0x0000000006BE0000-0x0000000006BF2000-memory.dmp
memory/4412-145-0x0000000006BF0000-0x0000000006BFC000-memory.dmp
memory/4412-146-0x0000000006C00000-0x0000000006C0E000-memory.dmp
memory/4412-147-0x0000000006C10000-0x0000000006C24000-memory.dmp
memory/4412-148-0x0000000006C20000-0x0000000006C30000-memory.dmp
memory/4412-149-0x0000000006C30000-0x0000000006C44000-memory.dmp
memory/4412-150-0x0000000006D90000-0x0000000006D9E000-memory.dmp
memory/4412-151-0x0000000006DA0000-0x0000000006DCE000-memory.dmp
memory/4412-152-0x0000000006DE0000-0x0000000006DF4000-memory.dmp
memory/4412-153-0x0000000006E70000-0x0000000006ED6000-memory.dmp