nanocore | 2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598

General

Target

2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.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:

2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.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

2720 powershell.exe

pid	process
2720	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

CasPol.exe

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

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe

description	pid	process	target process
PID 2816 set thread context of 2860	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	CasPol.exe

Drops file in Program Files directory 2 IoCs

Processes:

CasPol.exe

description	ioc	process
File created	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	CasPol.exe
File opened for modification	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	CasPol.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

3012 schtasks.exe
2032 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exeCasPol.exe

pid process

2720 powershell.exe
2860 CasPol.exe
2860 CasPol.exe
2860 CasPol.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

CasPol.exe

pid process

2860 CasPol.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeCasPol.exe

description pid process

Token: SeDebugPrivilege 2720 powershell.exe
Token: SeDebugPrivilege 2860 CasPol.exe

pid	process
3012	schtasks.exe
2032	schtasks.exe

pid	process
2720	powershell.exe
2860	CasPol.exe
2860	CasPol.exe
2860	CasPol.exe

pid	process
2860	CasPol.exe

description	pid	process
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	2860	CasPol.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exeCasPol.exe

description	pid	process	target process
PID 2816 wrote to memory of 2720	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	powershell.exe
PID 2816 wrote to memory of 2720	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	powershell.exe
PID 2816 wrote to memory of 2720	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	powershell.exe
PID 2816 wrote to memory of 2860	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	CasPol.exe
PID 2816 wrote to memory of 2860	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	CasPol.exe
PID 2816 wrote to memory of 2860	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	CasPol.exe
PID 2816 wrote to memory of 2860	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	CasPol.exe
PID 2816 wrote to memory of 2860	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	CasPol.exe
PID 2816 wrote to memory of 2860	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	CasPol.exe
PID 2816 wrote to memory of 2860	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	CasPol.exe
PID 2816 wrote to memory of 2860	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	CasPol.exe
PID 2816 wrote to memory of 2860	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	CasPol.exe
PID 2816 wrote to memory of 2572	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	WerFault.exe
PID 2816 wrote to memory of 2572	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	WerFault.exe
PID 2816 wrote to memory of 2572	2816	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe	WerFault.exe
PID 2860 wrote to memory of 3012	2860	CasPol.exe	schtasks.exe
PID 2860 wrote to memory of 3012	2860	CasPol.exe	schtasks.exe
PID 2860 wrote to memory of 3012	2860	CasPol.exe	schtasks.exe
PID 2860 wrote to memory of 3012	2860	CasPol.exe	schtasks.exe
PID 2860 wrote to memory of 2032	2860	CasPol.exe	schtasks.exe
PID 2860 wrote to memory of 2032	2860	CasPol.exe	schtasks.exe
PID 2860 wrote to memory of 2032	2860	CasPol.exe	schtasks.exe
PID 2860 wrote to memory of 2032	2860	CasPol.exe	schtasks.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe

C:\Users\Admin\AppData\Local\Temp\2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe
"C:\Users\Admin\AppData\Local\Temp\2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2816

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\2b4d871271fbc3f9487d370b9315bca0b9ca44ee81ecce6b89a57b31f7cf4598.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2720

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.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:2860

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFC1A.tmp"
3⤵
- Scheduled Task/Job: Scheduled Task
PID:3012

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFCC7.tmp"
3⤵
- Scheduled Task/Job: Scheduled Task
PID:2032

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2816 -s 804
2⤵
PID:2572

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\tmpFC1A.tmp
Filesize
1KB

MD5
50877795cc68cf26b9bfb83c427df727

SHA1
ecbb0819524be0f6fd23ed326a466a60e1095380

SHA256
f908a5018972006d96b98a68d1507ed7838bc1ca1914f201db0f7675fc1a194a

SHA512
41524de6ead6ab19aea0d31b2533c2e38b5bf17e9aafdb3bf26a8a94af792de5975d19c7dbf3d54d3ac399eefdd2890c19577b303183a82f0eb8cfaf0cd81595

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpFCC7.tmp
Filesize
1KB

MD5
4b7ef560289c0f62d0baf6f14f48a57a

SHA1
8331acb90dde588aa3196919f6e847f398fd06d1

SHA256
062844155306130d6fafc4fe10ac9e5ddd2ed462532b729c50cdc979c0d83207

SHA512
ecaa27c4b703d95f9f9b37d8c339982970482e7dab968c2010e0aa644bbfa31973111aafb827565af30c423d1d14e4ff997ec149614e713ff7ef3456894d02d8

Download Submit
memory/2720-19-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/2720-20-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2816-1-0x0000000000BA0000-0x0000000000BD8000-memory.dmp

Filesize
224KB

Download
memory/2816-2-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

Filesize
9.9MB

Download
memory/2816-3-0x000000001B570000-0x000000001B5A8000-memory.dmp

Filesize
224KB

Download
memory/2816-4-0x000000001B3B0000-0x000000001B43C000-memory.dmp

Filesize
560KB

Download
memory/2816-0-0x000007FEF5623000-0x000007FEF5624000-memory.dmp

Filesize
4KB

Download
memory/2816-32-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

Filesize
9.9MB

Download
memory/2816-31-0x000007FEF5623000-0x000007FEF5624000-memory.dmp

Filesize
4KB

Download
memory/2860-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2860-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2860-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2860-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2860-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2860-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2860-28-0x00000000007E0000-0x00000000007EA000-memory.dmp

Filesize
40KB

Download
memory/2860-29-0x0000000000990000-0x00000000009AE000-memory.dmp

Filesize
120KB

Download
memory/2860-30-0x00000000009B0000-0x00000000009BA000-memory.dmp

Filesize
40KB

Download
memory/2860-10-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2860-12-0x0000000000400000-0x0000000000438000-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