nanocore | 2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598

General

Target

HDXC~9337636PO-EXT-P88.exe
Size

1.0MB
MD5

8b6071a9344b21469ca5a4b62a0a855b
SHA1

d255b5fd2b01cca939ce9c2020461afbfe098c18
SHA256

2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598
SHA512

a3508e067982550c8575ca768797720456b5e290fa74e62c777ab190b6c9bf35b5255e071cc054fec9dbfea5b43eac9959db77eaca71bf286d05dfd1a8191a18
SSDEEP

12288:SWw6Htx8pRqpu+Ur5ge/S//f3V5SpsW4rmCac10lPAUELfJGERT0/CSVe:PzoD+BeOf2psW4rmFc1TLfb0/CSVe

Score

10^/10

nanocore evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

3654.ddns.net:3654

10.9.0.118:3654

Mutex

08b979e3-5178-4508-8fee-8691cecb4a52

Attributes

activate_away_mode
true
backup_connection_host
10.9.0.118
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2024-04-20T00:01:40.250540136Z
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
3654
default_group
Nan
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
08b979e3-5178-4508-8fee-8691cecb4a52
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
3654.ddns.net
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.
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:

HDXC~9337636PO-EXT-P88.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	HDXC~9337636PO-EXT-P88.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

2552 powershell.exe

pid	process
2552	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

regasm.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\AGP Subsystem = "C:\\Program Files (x86)\\AGP Subsystem\\agpss.exe"	regasm.exe

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

HDXC~9337636PO-EXT-P88.exeregasm.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	HDXC~9337636PO-EXT-P88.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	HDXC~9337636PO-EXT-P88.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	regasm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

HDXC~9337636PO-EXT-P88.exe

description pid process target process

PID 1356 set thread context of 2576 1356 HDXC~9337636PO-EXT-P88.exe regasm.exe

description	pid	process	target process
PID 1356 set thread context of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe

Drops file in Program Files directory 2 IoCs

Processes:

regasm.exe

description	ioc	process
File created	C:\Program Files (x86)\AGP Subsystem\agpss.exe	regasm.exe
File opened for modification	C:\Program Files (x86)\AGP Subsystem\agpss.exe	regasm.exe

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

System Information Discovery
T1082
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exeschtasks.exe

pid process

3020 schtasks.exe
2912 schtasks.exe
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

powershell.exeregasm.exe

pid process

2552 powershell.exe
2576 regasm.exe
2576 regasm.exe
2576 regasm.exe
2576 regasm.exe
2576 regasm.exe
2576 regasm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid process

2576 regasm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeregasm.exe

description pid process

Token: SeDebugPrivilege 2552 powershell.exe
Token: SeDebugPrivilege 2576 regasm.exe

pid	process
3020	schtasks.exe
2912	schtasks.exe

pid	process
2552	powershell.exe
2576	regasm.exe
2576	regasm.exe
2576	regasm.exe
2576	regasm.exe
2576	regasm.exe
2576	regasm.exe

pid	process
2576	regasm.exe

description	pid	process
Token: SeDebugPrivilege	2552	powershell.exe
Token: SeDebugPrivilege	2576	regasm.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

HDXC~9337636PO-EXT-P88.exeregasm.exe

description	pid	process	target process
PID 1356 wrote to memory of 2552	1356	HDXC~9337636PO-EXT-P88.exe	powershell.exe
PID 1356 wrote to memory of 2552	1356	HDXC~9337636PO-EXT-P88.exe	powershell.exe
PID 1356 wrote to memory of 2552	1356	HDXC~9337636PO-EXT-P88.exe	powershell.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2576	1356	HDXC~9337636PO-EXT-P88.exe	regasm.exe
PID 1356 wrote to memory of 2800	1356	HDXC~9337636PO-EXT-P88.exe	WerFault.exe
PID 1356 wrote to memory of 2800	1356	HDXC~9337636PO-EXT-P88.exe	WerFault.exe
PID 1356 wrote to memory of 2800	1356	HDXC~9337636PO-EXT-P88.exe	WerFault.exe
PID 2576 wrote to memory of 3020	2576	regasm.exe	schtasks.exe
PID 2576 wrote to memory of 3020	2576	regasm.exe	schtasks.exe
PID 2576 wrote to memory of 3020	2576	regasm.exe	schtasks.exe
PID 2576 wrote to memory of 3020	2576	regasm.exe	schtasks.exe
PID 2576 wrote to memory of 2912	2576	regasm.exe	schtasks.exe
PID 2576 wrote to memory of 2912	2576	regasm.exe	schtasks.exe
PID 2576 wrote to memory of 2912	2576	regasm.exe	schtasks.exe
PID 2576 wrote to memory of 2912	2576	regasm.exe	schtasks.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

HDXC~9337636PO-EXT-P88.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	HDXC~9337636PO-EXT-P88.exe

C:\Users\Admin\AppData\Local\Temp\HDXC~9337636PO-EXT-P88.exe
"C:\Users\Admin\AppData\Local\Temp\HDXC~9337636PO-EXT-P88.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1356

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\HDXC~9337636PO-EXT-P88.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2552

C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.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
PID:2576

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "AGP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB57A.tmp"
3⤵
- Scheduled Task/Job: Scheduled Task
PID:3020

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "AGP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB646.tmp"
3⤵
- Scheduled Task/Job: Scheduled Task
PID:2912

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1356 -s 936
2⤵
PID:2800

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

C:\Users\Admin\AppData\Local\Temp\tmpB57A.tmp
Filesize
1KB

MD5
9f7ed98e81d0fe949e838d96a3082d9d

SHA1
51f2641ef388b4d7124299a8fe67dd28b97d7c2b

SHA256
c8e060a2fe9fbb9ab914cff8c292fedb3d6181626765216168fbe6894ad2f76d

SHA512
3d3333b5cc5acef6d5ec8add76be23c028c167c09e50310f2972380871c730541d6500249f6d1b140b1e2c962d22b5c8d5a1ed034ef9f856b2dd1d73107dabcc

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB646.tmp
Filesize
1KB

MD5
8aefdc623880016d77594b1802f74db6

SHA1
17608aaab6106247dec66a472516d023272c9b9b

SHA256
ccd9d374a356e8635fe06015e07c986fb0e6f71099234ddc2935a6cb5e1571ac

SHA512
bde73cc8244dcb054ff68b86df14ae644b0816aac8524e746e9bf0e68406c6d7e8ee6a0c642b11a9b197319b023c43fcbdc5eafe9c32e4011ad8065cea0b1eb5

Download Submit
memory/1356-1-0x0000000000B10000-0x0000000000B48000-memory.dmp

Filesize
224KB

Download
memory/1356-2-0x000007FEF5C60000-0x000007FEF664C000-memory.dmp

Filesize
9.9MB

Download
memory/1356-3-0x000000001B800000-0x000000001B838000-memory.dmp

Filesize
224KB

Download
memory/1356-4-0x0000000001F50000-0x0000000001FDC000-memory.dmp

Filesize
560KB

Download
memory/1356-34-0x000007FEF5C60000-0x000007FEF664C000-memory.dmp

Filesize
9.9MB

Download
memory/1356-33-0x000007FEF5C63000-0x000007FEF5C64000-memory.dmp

Filesize
4KB

Download
memory/1356-0-0x000007FEF5C63000-0x000007FEF5C64000-memory.dmp

Filesize
4KB

Download
memory/2552-20-0x000000001B5D0000-0x000000001B8B2000-memory.dmp

Filesize
2.9MB

Download
memory/2552-21-0x0000000002690000-0x0000000002698000-memory.dmp

Filesize
32KB

Download
memory/2576-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2576-36-0x00000000006B0000-0x00000000006C2000-memory.dmp

Filesize
72KB

Download
memory/2576-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2576-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2576-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2576-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2576-29-0x0000000000610000-0x000000000061A000-memory.dmp

Filesize
40KB

Download
memory/2576-30-0x0000000000620000-0x000000000063E000-memory.dmp

Filesize
120KB

Download
memory/2576-31-0x0000000000640000-0x000000000064A000-memory.dmp

Filesize
40KB

Download
memory/2576-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2576-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2576-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2576-37-0x0000000000700000-0x000000000071A000-memory.dmp

Filesize
104KB

Download
memory/2576-38-0x0000000000870000-0x000000000087E000-memory.dmp

Filesize
56KB

Download
memory/2576-39-0x0000000000990000-0x00000000009A2000-memory.dmp

Filesize
72KB

Download
memory/2576-40-0x00000000009A0000-0x00000000009AE000-memory.dmp

Filesize
56KB

Download
memory/2576-41-0x00000000009B0000-0x00000000009BC000-memory.dmp

Filesize
48KB

Download
memory/2576-42-0x00000000009C0000-0x00000000009D4000-memory.dmp

Filesize
80KB

Download
memory/2576-43-0x00000000009D0000-0x00000000009E0000-memory.dmp

Filesize
64KB

Download
memory/2576-44-0x00000000009F0000-0x0000000000A04000-memory.dmp

Filesize
80KB

Download
memory/2576-45-0x0000000000A00000-0x0000000000A0E000-memory.dmp

Filesize
56KB

Download
memory/2576-46-0x0000000000C30000-0x0000000000C5E000-memory.dmp

Filesize
184KB

Download
memory/2576-47-0x0000000000C60000-0x0000000000C74000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads