nanocore | e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83

General

Target

e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.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:

e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe

Detects executables packed with or use KoiVM 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2388-4-0x000000001AA80000-0x000000001AB0C000-memory.dmp	INDICATOR_EXE_Packed_KoiVM

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

2544 powershell.exe

pid	process
2544	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	37.235.1.174
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	37.235.1.174

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\DHCP Host = "C:\\Program Files (x86)\\DHCP Host\\dhcphost.exe"	installutil.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe

description	pid	process	target process
PID 2388 set thread context of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe

Drops file in Program Files directory 2 IoCs

Processes:

installutil.exe

description	ioc	process
File created	C:\Program Files (x86)\DHCP Host\dhcphost.exe	installutil.exe
File opened for modification	C:\Program Files (x86)\DHCP Host\dhcphost.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 4 IoCs

Processes:

powershell.exeinstallutil.exe

pid process

2544 powershell.exe
2604 installutil.exe
2604 installutil.exe
2604 installutil.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

installutil.exe

pid process

2604 installutil.exe

pid	process
2544	powershell.exe
2604	installutil.exe
2604	installutil.exe
2604	installutil.exe

pid	process
2604	installutil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exepowershell.exeinstallutil.exe

description	pid	process
Token: SeDebugPrivilege	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe
Token: SeDebugPrivilege	2544	powershell.exe
Token: SeDebugPrivilege	2604	installutil.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe

description	pid	process	target process
PID 2388 wrote to memory of 2544	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	powershell.exe
PID 2388 wrote to memory of 2544	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	powershell.exe
PID 2388 wrote to memory of 2544	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	powershell.exe
PID 2388 wrote to memory of 3040	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	msbuild.exe
PID 2388 wrote to memory of 3040	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	msbuild.exe
PID 2388 wrote to memory of 3040	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	msbuild.exe
PID 2388 wrote to memory of 3040	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	msbuild.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2604	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	installutil.exe
PID 2388 wrote to memory of 2780	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	WerFault.exe
PID 2388 wrote to memory of 2780	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	WerFault.exe
PID 2388 wrote to memory of 2780	2388	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe	WerFault.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe

C:\Users\Admin\AppData\Local\Temp\e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe
"C:\Users\Admin\AppData\Local\Temp\e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.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:2388

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\e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2544

C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
2⤵
PID:3040

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:2604

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2388 -s 776
2⤵
PID:2780

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/2388-0-0x000007FEF5AC3000-0x000007FEF5AC4000-memory.dmp

Filesize
4KB

Download
memory/2388-1-0x0000000000A60000-0x0000000000A74000-memory.dmp

Filesize
80KB

Download
memory/2388-2-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

Filesize
9.9MB

Download
memory/2388-3-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2388-4-0x000000001AA80000-0x000000001AB0C000-memory.dmp

Filesize
560KB

Download
memory/2388-30-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

Filesize
9.9MB

Download
memory/2388-29-0x000007FEF5AC3000-0x000007FEF5AC4000-memory.dmp

Filesize
4KB

Download
memory/2544-9-0x0000000002D10000-0x0000000002D90000-memory.dmp

Filesize
512KB

Download
memory/2544-10-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2544-16-0x00000000028F0000-0x00000000028F8000-memory.dmp

Filesize
32KB

Download
memory/2604-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2604-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2604-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2604-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2604-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2604-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2604-26-0x00000000003B0000-0x00000000003BA000-memory.dmp

Filesize
40KB

Download
memory/2604-27-0x00000000003C0000-0x00000000003DE000-memory.dmp

Filesize
120KB

Download
memory/2604-28-0x00000000003E0000-0x00000000003EA000-memory.dmp

Filesize
40KB

Download
memory/2604-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2604-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads