nanocore | c96821c49a936964dc21d8004ac5eef5681317903c3fd3800c76d344d699735d

General

Target

28-10-2021.exe
Size

436KB
MD5

a0b915d8a5497b6a4a63b19d113f2201
SHA1

a2a62831da2541ce291edc7cbfe2258b0de75b85
SHA256

c96821c49a936964dc21d8004ac5eef5681317903c3fd3800c76d344d699735d
SHA512

4925350035be6f2cc920ac8dd66bd737fe84d82cae71bdd1e1214e059760b5dde8915fd7a135bd50d1cb851ef85b001dde4d85cbec757884ed7b01ef2ed53d41

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

kevin.ydns.eu:4949

Mutex

c2f8d3c6-6fc5-4172-9965-fb7bf2f7332d

Attributes

activate_away_mode
true
backup_connection_host
kevin.ydns.eu
backup_dns_server
4949
buffer_size
65535
build_time
2021-08-07T15:52:33.078911036Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
4949
default_group
now
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
c2f8d3c6-6fc5-4172-9965-fb7bf2f7332d
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
kevin.ydns.eu
primary_dns_server
4949
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.
keylogger trojan stealer spyware nanocore

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

28-10-2021.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\UDP Subsystem = "C:\\Program Files (x86)\\UDP Subsystem\\udpss.exe"	28-10-2021.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

28-10-2021.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 28-10-2021.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

28-10-2021.exe

description pid process target process

PID 1524 set thread context of 816 1524 28-10-2021.exe 28-10-2021.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	28-10-2021.exe

description	pid	process	target process
PID 1524 set thread context of 816	1524	28-10-2021.exe	28-10-2021.exe

Drops file in Program Files directory 2 IoCs

Processes:

28-10-2021.exe

description	ioc	process
File created	C:\Program Files (x86)\UDP Subsystem\udpss.exe	28-10-2021.exe
File opened for modification	C:\Program Files (x86)\UDP Subsystem\udpss.exe	28-10-2021.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

28-10-2021.exe28-10-2021.exe

pid process

1524 28-10-2021.exe
816 28-10-2021.exe
816 28-10-2021.exe
816 28-10-2021.exe
816 28-10-2021.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

28-10-2021.exe

pid process

816 28-10-2021.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

28-10-2021.exe28-10-2021.exe

description pid process

Token: SeDebugPrivilege 1524 28-10-2021.exe
Token: SeDebugPrivilege 816 28-10-2021.exe

pid	process
1524	28-10-2021.exe
816	28-10-2021.exe
816	28-10-2021.exe
816	28-10-2021.exe
816	28-10-2021.exe

pid	process
816	28-10-2021.exe

description	pid	process
Token: SeDebugPrivilege	1524	28-10-2021.exe
Token: SeDebugPrivilege	816	28-10-2021.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

28-10-2021.exe

description	pid	process	target process
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe
PID 1524 wrote to memory of 816	1524	28-10-2021.exe	28-10-2021.exe

C:\Users\Admin\AppData\Local\Temp\28-10-2021.exe
"C:\Users\Admin\AppData\Local\Temp\28-10-2021.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1524

C:\Users\Admin\AppData\Local\Temp\28-10-2021.exe
C:\Users\Admin\AppData\Local\Temp\28-10-2021.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
PID:816

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/816-68-0x00000000005D0000-0x00000000005D5000-memory.dmp

Filesize
20KB

Download
memory/816-82-0x00000000021F0000-0x00000000021FF000-memory.dmp

Filesize
60KB

Download
memory/816-69-0x0000000000840000-0x0000000000859000-memory.dmp

Filesize
100KB

Download
memory/816-81-0x00000000021C0000-0x00000000021E9000-memory.dmp

Filesize
164KB

Download
memory/816-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/816-60-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/816-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/816-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/816-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/816-64-0x000000000041E792-mapping.dmp

Download
memory/816-65-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/816-67-0x0000000000B90000-0x0000000000B91000-memory.dmp

Filesize
4KB

Download
memory/816-80-0x00000000021A0000-0x00000000021AA000-memory.dmp

Filesize
40KB

Download
memory/816-79-0x0000000002190000-0x000000000219F000-memory.dmp

Filesize
60KB

Download
memory/816-77-0x0000000002130000-0x000000000213D000-memory.dmp

Filesize
52KB

Download
memory/816-71-0x0000000000880000-0x000000000088D000-memory.dmp

Filesize
52KB

Download
memory/816-72-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

Filesize
84KB

Download
memory/816-73-0x0000000000B70000-0x0000000000B76000-memory.dmp

Filesize
24KB

Download
memory/816-74-0x0000000000C40000-0x0000000000C4C000-memory.dmp

Filesize
48KB

Download
memory/816-75-0x00000000020D0000-0x00000000020D7000-memory.dmp

Filesize
28KB

Download
memory/816-76-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/816-70-0x00000000005E0000-0x00000000005E3000-memory.dmp

Filesize
12KB

Download
memory/816-78-0x0000000002140000-0x0000000002149000-memory.dmp

Filesize
36KB

Download
memory/1524-56-0x00000000041B0000-0x0000000004215000-memory.dmp

Filesize
404KB

Download
memory/1524-57-0x0000000004C10000-0x0000000004C11000-memory.dmp

Filesize
4KB

Download
memory/1524-58-0x0000000000500000-0x0000000000533000-memory.dmp

Filesize
204KB

Download
memory/1524-54-0x0000000000C50000-0x0000000000C51000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads