nanocore | e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83

General

Target

a22d0177e9d6943719508b77ed4ac91f.exe
Size

601KB
MD5

a22d0177e9d6943719508b77ed4ac91f
SHA1

a9fac95535d4ef69a6f7b0550ed6bba65f96dbc3
SHA256

e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83
SHA512

ce7de781add996902983ca70edb86219a947347dc3990da542cbbdd33a869b92a1ec537974f154230df82ab64ef3474a8d20c9167c2434ca9b1013c4522fb949
SSDEEP

12288:H+jJ7GB/lLTXVzTpmGlWK74RTeQUj5VJ1MwzMRs5ax7W:H+dKB/lnVHMGMK74VfUjXTMEMRCa8

Score

10^/10

nanocore evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

staywicked99.ddns.net:63882

127.0.0.1:63882

Mutex

6f75db72-72d4-402c-b879-6fc19c6f2e39

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
37.235.1.177
buffer_size
65535
build_time
2024-03-05T14:12:07.229634536Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
63882
default_group
FINGERS
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
6f75db72-72d4-402c-b879-6fc19c6f2e39
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
staywicked99.ddns.net
primary_dns_server
37.235.1.174
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

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	a22d0177e9d6943719508b77ed4ac91f.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2168 powershell.exe

pid	process
2168	powershell.exe

Unexpected DNS network traffic destination 7 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description	ioc
Destination IP	37.235.1.177
Destination IP	37.235.1.177
Destination IP	37.235.1.174
Destination IP	37.235.1.174
Destination IP	37.235.1.177
Destination IP	37.235.1.174
Destination IP	37.235.1.174

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

installutil.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\LAN Service = "C:\\Program Files (x86)\\LAN Service\\lansv.exe"	installutil.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a22d0177e9d6943719508b77ed4ac91f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	a22d0177e9d6943719508b77ed4ac91f.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description pid process target process

PID 2020 set thread context of 2352 2020 a22d0177e9d6943719508b77ed4ac91f.exe installutil.exe

description	pid	process	target process
PID 2020 set thread context of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe

Drops file in Program Files directory 2 IoCs

Processes:

installutil.exe

description	ioc	process
File created	C:\Program Files (x86)\LAN Service\lansv.exe	installutil.exe
File opened for modification	C:\Program Files (x86)\LAN Service\lansv.exe	installutil.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exeinstallutil.exe

pid process

2168 powershell.exe
2352 installutil.exe
2352 installutil.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

installutil.exe

pid process

2352 installutil.exe

pid	process
2168	powershell.exe
2352	installutil.exe
2352	installutil.exe

pid	process
2352	installutil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

a22d0177e9d6943719508b77ed4ac91f.exepowershell.exeinstallutil.exe

description	pid	process
Token: SeDebugPrivilege	2020	a22d0177e9d6943719508b77ed4ac91f.exe
Token: SeDebugPrivilege	2168	powershell.exe
Token: SeDebugPrivilege	2352	installutil.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description	pid	process	target process
PID 2020 wrote to memory of 2168	2020	a22d0177e9d6943719508b77ed4ac91f.exe	powershell.exe
PID 2020 wrote to memory of 2168	2020	a22d0177e9d6943719508b77ed4ac91f.exe	powershell.exe
PID 2020 wrote to memory of 2168	2020	a22d0177e9d6943719508b77ed4ac91f.exe	powershell.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2352	2020	a22d0177e9d6943719508b77ed4ac91f.exe	installutil.exe
PID 2020 wrote to memory of 2672	2020	a22d0177e9d6943719508b77ed4ac91f.exe	WerFault.exe
PID 2020 wrote to memory of 2672	2020	a22d0177e9d6943719508b77ed4ac91f.exe	WerFault.exe
PID 2020 wrote to memory of 2672	2020	a22d0177e9d6943719508b77ed4ac91f.exe	WerFault.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	a22d0177e9d6943719508b77ed4ac91f.exe

C:\Users\Admin\AppData\Local\Temp\a22d0177e9d6943719508b77ed4ac91f.exe
"C:\Users\Admin\AppData\Local\Temp\a22d0177e9d6943719508b77ed4ac91f.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2020

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\a22d0177e9d6943719508b77ed4ac91f.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2168

C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2352

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2020 -s 892
2⤵
PID:2672

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/2020-0-0x000007FEF5373000-0x000007FEF5374000-memory.dmp

Filesize
4KB

Download
memory/2020-1-0x00000000013B0000-0x00000000013C4000-memory.dmp

Filesize
80KB

Download
memory/2020-2-0x000007FEF5370000-0x000007FEF5D5C000-memory.dmp

Filesize
9.9MB

Download
memory/2020-3-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/2020-4-0x000000001AD80000-0x000000001AE0C000-memory.dmp

Filesize
560KB

Download
memory/2020-31-0x000007FEF5370000-0x000007FEF5D5C000-memory.dmp

Filesize
9.9MB

Download
memory/2020-30-0x000007FEF5373000-0x000007FEF5374000-memory.dmp

Filesize
4KB

Download
memory/2168-24-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2168-23-0x000000001B600000-0x000000001B8E2000-memory.dmp

Filesize
2.9MB

Download
memory/2352-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-27-0x0000000000500000-0x000000000050A000-memory.dmp

Filesize
40KB

Download
memory/2352-28-0x0000000000610000-0x000000000062E000-memory.dmp

Filesize
120KB

Download
memory/2352-29-0x0000000000670000-0x000000000067A000-memory.dmp

Filesize
40KB

Download
memory/2352-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads