nanocore | f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd

General

Target

CSXER09OOPMND--3098376TDGH.exe
Size

3.3MB
MD5

b5cb2e972a0d15d113133d55d8fa9494
SHA1

cc307c7ccb5fc8ddb4aabfff18527804aeb1c077
SHA256

f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd
SHA512

1370f52424d7635783cefda3333cce4efdbf2397b01ff251c6c8e4dd2bc32f5471211634da8c1fc271a4a83c2c49570ff8b5363838507d9b4b8f58290748120a
SSDEEP

12288:diy5BPaY1yG1wsKYeuELZ41ypSP+j/hfdeChoB3Lopc6iH7zd:n5BPaIyPB/Fqy4Gj/Xrhyoc6iHV

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:

CSXER09OOPMND--3098376TDGH.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	CSXER09OOPMND--3098376TDGH.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

2784 powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

AddInProcess32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ARP Host = "C:\\Program Files (x86)\\ARP Host\\arphost.exe"	AddInProcess32.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

CSXER09OOPMND--3098376TDGH.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	CSXER09OOPMND--3098376TDGH.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	CSXER09OOPMND--3098376TDGH.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

CSXER09OOPMND--3098376TDGH.exe

description pid process target process

PID 1924 set thread context of 2404 1924 CSXER09OOPMND--3098376TDGH.exe AddInProcess32.exe

description	pid	process	target process
PID 1924 set thread context of 2404	1924	CSXER09OOPMND--3098376TDGH.exe	AddInProcess32.exe

Drops file in Program Files directory 2 IoCs

Processes:

AddInProcess32.exe

description	ioc	process
File created	C:\Program Files (x86)\ARP Host\arphost.exe	AddInProcess32.exe
File opened for modification	C:\Program Files (x86)\ARP Host\arphost.exe	AddInProcess32.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

2444 schtasks.exe
1216 schtasks.exe

pid	process
2444	schtasks.exe
1216	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

powershell.exeAddInProcess32.exe

pid	process
2784	powershell.exe
2404	AddInProcess32.exe
2404	AddInProcess32.exe
2404	AddInProcess32.exe
2404	AddInProcess32.exe
2404	AddInProcess32.exe
2404	AddInProcess32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AddInProcess32.exe

pid process

2404 AddInProcess32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeAddInProcess32.exe

description pid process

Token: SeDebugPrivilege 2784 powershell.exe
Token: SeDebugPrivilege 2404 AddInProcess32.exe

pid	process
2404	AddInProcess32.exe

description	pid	process
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	2404	AddInProcess32.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

CSXER09OOPMND--3098376TDGH.exeAddInProcess32.exe

description	pid	process	target process
PID 1924 wrote to memory of 2784	1924	CSXER09OOPMND--3098376TDGH.exe	powershell.exe
PID 1924 wrote to memory of 2784	1924	CSXER09OOPMND--3098376TDGH.exe	powershell.exe
PID 1924 wrote to memory of 2784	1924	CSXER09OOPMND--3098376TDGH.exe	powershell.exe
PID 1924 wrote to memory of 2404	1924	CSXER09OOPMND--3098376TDGH.exe	AddInProcess32.exe
PID 1924 wrote to memory of 2404	1924	CSXER09OOPMND--3098376TDGH.exe	AddInProcess32.exe
PID 1924 wrote to memory of 2404	1924	CSXER09OOPMND--3098376TDGH.exe	AddInProcess32.exe
PID 1924 wrote to memory of 2404	1924	CSXER09OOPMND--3098376TDGH.exe	AddInProcess32.exe
PID 1924 wrote to memory of 2404	1924	CSXER09OOPMND--3098376TDGH.exe	AddInProcess32.exe
PID 1924 wrote to memory of 2404	1924	CSXER09OOPMND--3098376TDGH.exe	AddInProcess32.exe
PID 1924 wrote to memory of 2404	1924	CSXER09OOPMND--3098376TDGH.exe	AddInProcess32.exe
PID 1924 wrote to memory of 2404	1924	CSXER09OOPMND--3098376TDGH.exe	AddInProcess32.exe
PID 1924 wrote to memory of 2404	1924	CSXER09OOPMND--3098376TDGH.exe	AddInProcess32.exe
PID 1924 wrote to memory of 2556	1924	CSXER09OOPMND--3098376TDGH.exe	WerFault.exe
PID 1924 wrote to memory of 2556	1924	CSXER09OOPMND--3098376TDGH.exe	WerFault.exe
PID 1924 wrote to memory of 2556	1924	CSXER09OOPMND--3098376TDGH.exe	WerFault.exe
PID 2404 wrote to memory of 2444	2404	AddInProcess32.exe	schtasks.exe
PID 2404 wrote to memory of 2444	2404	AddInProcess32.exe	schtasks.exe
PID 2404 wrote to memory of 2444	2404	AddInProcess32.exe	schtasks.exe
PID 2404 wrote to memory of 2444	2404	AddInProcess32.exe	schtasks.exe
PID 2404 wrote to memory of 1216	2404	AddInProcess32.exe	schtasks.exe
PID 2404 wrote to memory of 1216	2404	AddInProcess32.exe	schtasks.exe
PID 2404 wrote to memory of 1216	2404	AddInProcess32.exe	schtasks.exe
PID 2404 wrote to memory of 1216	2404	AddInProcess32.exe	schtasks.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

CSXER09OOPMND--3098376TDGH.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	CSXER09OOPMND--3098376TDGH.exe

C:\Users\Admin\AppData\Local\Temp\CSXER09OOPMND--3098376TDGH.exe
"C:\Users\Admin\AppData\Local\Temp\CSXER09OOPMND--3098376TDGH.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1924

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\CSXER09OOPMND--3098376TDGH.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2784

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2404

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF1BE.tmp"
3⤵
- Scheduled Task/Job: Scheduled Task
PID:2444

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "ARP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF23C.tmp"
3⤵
- Scheduled Task/Job: Scheduled Task
PID:1216

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1924 -s 936
2⤵
PID:2556

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\tmpF1BE.tmp
Filesize
1KB

MD5
3e4bb6de7a77b9bbb7aea91bb383c4e8

SHA1
a11d32b42fd57ce9b706decef5289879a23a6afc

SHA256
7e37cca69f95c3d97adfbaeb374d171017b21f047068d72cc7254b678caa9247

SHA512
b5b013f10349eb0891560a8d28da308aa8bf3196933a0f40dd3d80df4677ce7f86d632ff19c3ccf63f81d2f14a7ff0a5eef2a110179042981d0f9b122582f7a2

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF23C.tmp
Filesize
1KB

MD5
447ab194ab36cb1d20078d80e502b1b2

SHA1
a947b3b2c91d7c50bb8d39bd4fc91a0d0cc5b1c0

SHA256
8d5304b20b7d7dea223ce2738e5668054250d57bf6bed86b305b69924bd472f5

SHA512
49ddc557f7f6635627eea9bf0fa12a14b7b13edb235ed560ee0044a7f87fe27b686ff878d347d0273d92eb0b318b8c2bca85c0fbf42d586ed7d7da39eac6a327

Download Submit
memory/1924-1-0x0000000000AC0000-0x0000000000ACC000-memory.dmp

Filesize
48KB

Download
memory/1924-2-0x000007FEF5940000-0x000007FEF632C000-memory.dmp

Filesize
9.9MB

Download
memory/1924-3-0x000000001B6F0000-0x000000001B6FC000-memory.dmp

Filesize
48KB

Download
memory/1924-4-0x000000001B240000-0x000000001B2CC000-memory.dmp

Filesize
560KB

Download
memory/1924-50-0x000007FEF5940000-0x000007FEF632C000-memory.dmp

Filesize
9.9MB

Download
memory/1924-36-0x000007FEF5943000-0x000007FEF5944000-memory.dmp

Filesize
4KB

Download
memory/1924-0-0x000007FEF5943000-0x000007FEF5944000-memory.dmp

Filesize
4KB

Download
memory/2404-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2404-39-0x0000000000A30000-0x0000000000A4A000-memory.dmp

Filesize
104KB

Download
memory/2404-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2404-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2404-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2404-49-0x0000000004260000-0x0000000004274000-memory.dmp

Filesize
80KB

Download
memory/2404-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2404-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2404-32-0x00000000005E0000-0x00000000005EA000-memory.dmp

Filesize
40KB

Download
memory/2404-33-0x0000000000810000-0x000000000082E000-memory.dmp

Filesize
120KB

Download
memory/2404-34-0x00000000005F0000-0x00000000005FA000-memory.dmp

Filesize
40KB

Download
memory/2404-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2404-38-0x0000000000950000-0x0000000000962000-memory.dmp

Filesize
72KB

Download
memory/2404-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2404-40-0x0000000000A50000-0x0000000000A5E000-memory.dmp

Filesize
56KB

Download
memory/2404-42-0x0000000000AC0000-0x0000000000ACE000-memory.dmp

Filesize
56KB

Download
memory/2404-41-0x0000000000AB0000-0x0000000000AC2000-memory.dmp

Filesize
72KB

Download
memory/2404-43-0x0000000000B10000-0x0000000000B1C000-memory.dmp

Filesize
48KB

Download
memory/2404-44-0x0000000000BA0000-0x0000000000BB4000-memory.dmp

Filesize
80KB

Download
memory/2404-45-0x0000000000BB0000-0x0000000000BC0000-memory.dmp

Filesize
64KB

Download
memory/2404-46-0x0000000000D20000-0x0000000000D34000-memory.dmp

Filesize
80KB

Download
memory/2404-47-0x0000000000D30000-0x0000000000D3E000-memory.dmp

Filesize
56KB

Download
memory/2404-48-0x0000000004D40000-0x0000000004D6E000-memory.dmp

Filesize
184KB

Download
memory/2784-23-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/2784-24-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads