nanocore | 49b88f74282203ff9472be70da1695613b5516d0531c3e7a424f9de8cdb19a0d

General

Target

CFB1F534DBB8DCEFC8B796D42EA10E1D.exe
Size

255KB
MD5

cfb1f534dbb8dcefc8b796d42ea10e1d
SHA1

563eb6543abf1fab846af9350e156f6c91070cae
SHA256

49b88f74282203ff9472be70da1695613b5516d0531c3e7a424f9de8cdb19a0d
SHA512

62c04b862196af79dc567f5a2835f16b36989d98fc6404a5b59b88b199449a70516e45a961ca6c159b520cc50aafc51d5803979b4a9459dadf95178dc8c9f481
SSDEEP

6144:mZnw3Q94THw6lCWLfiw6x3kOMDzvx+nikv5MSDq7P5RyD0K:4w3QuzpRLS6RDzcZDeyDp

Score

10^/10

nanocore discovery evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

thecevoo.duckdns.org:4444

Mutex

cf1b3203-b743-46f7-be2d-023c4c4e5c80

Attributes

activate_away_mode
false
backup_connection_host
thecevoo.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-06-11T18:53:21.221834036Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
4444
default_group
Default
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
cf1b3203-b743-46f7-be2d-023c4c4e5c80
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
thecevoo.duckdns.org
primary_dns_server
8.8.8.8
request_elevation
false
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
false
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
Nanocore family
nanocore

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\PCI Subsystem = "C:\\Program Files (x86)\\PCI Subsystem\\pciss.exe"	RegAsm.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HWMonitor = "C:\\Users\\Admin\\AppData\\Roaming\\HWMonitor\\HWMonitor.exe"	powershell.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RegAsm.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
5080	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2360 set thread context of 2148	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	98

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PCI Subsystem\pciss.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\PCI Subsystem\pciss.exe	RegAsm.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

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

pid	Process
4172	schtasks.exe
2212	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
5080	powershell.exe
5080	powershell.exe
2148	RegAsm.exe
2148	RegAsm.exe
2148	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2148	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5080	powershell.exe
Token: SeDebugPrivilege	2148	RegAsm.exe
Token: SeDebugPrivilege	2148	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 5080	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	96
PID 2360 wrote to memory of 5080	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	96
PID 2360 wrote to memory of 5080	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	96
PID 2360 wrote to memory of 2148	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	98
PID 2360 wrote to memory of 2148	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	98
PID 2360 wrote to memory of 2148	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	98
PID 2360 wrote to memory of 2148	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	98
PID 2360 wrote to memory of 2148	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	98
PID 2360 wrote to memory of 2148	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	98
PID 2360 wrote to memory of 2148	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	98
PID 2360 wrote to memory of 2148	2360	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	98
PID 2148 wrote to memory of 2212	2148	RegAsm.exe	99
PID 2148 wrote to memory of 2212	2148	RegAsm.exe	99
PID 2148 wrote to memory of 2212	2148	RegAsm.exe	99
PID 2148 wrote to memory of 4172	2148	RegAsm.exe	101
PID 2148 wrote to memory of 4172	2148	RegAsm.exe	101
PID 2148 wrote to memory of 4172	2148	RegAsm.exe	101

C:\Users\Admin\AppData\Local\Temp\CFB1F534DBB8DCEFC8B796D42EA10E1D.exe
"C:\Users\Admin\AppData\Local\Temp\CFB1F534DBB8DCEFC8B796D42EA10E1D.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Remove-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'HWMonitor';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'HWMonitor' -Value '"C:\Users\Admin\AppData\Roaming\HWMonitor\HWMonitor.exe"' -PropertyType 'String'
  2⤵
  - Adds Run key to start application
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5080
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2148
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "PCI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE0BB.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2212
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "PCI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE197.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w4vj3a0y.mc0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE0BB.tmp

Filesize
1KB

MD5
48ef7fa9033389ad7929d7a6b9d10298

SHA1
9db6cb7325c8bdf66a15f7b5f34703709a45aeb6

SHA256
0c1b5f67eeb276d1d4205b138ce32bc6149924e02281a2db8e4623a700e88f15

SHA512
ac8bd104ecbacc9bccce9e087f67e5b18072d59367ccd31d4e66132b6baaea520cba5b9b59464483d86abf74826b382c402f12e9a586c99bda8c78a0de33944e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE197.tmp

Filesize
1KB

MD5
09063e7cc0d66a9aed53f2e2d2409103

SHA1
96f8fa15b5a3b2646f6691770a158c69ea7405a4

SHA256
369b159ef60c988373a3c85e0b10b5ff2178504465f11965ab0d66f14124f9a1

SHA512
c460a3cab70270c5cefe0464df6ddb9d50bb58ac9c49c7e62c9a55cc6bc30b6411cbc28ae418dd91b1ba1190f8394ccd937452ae70d7062740207d2ffc68e2ec

Download Submit
memory/2148-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2148-52-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/2148-45-0x00000000067E0000-0x00000000067EA000-memory.dmp

Filesize
40KB

Download
memory/2148-44-0x0000000005BD0000-0x0000000005BEE000-memory.dmp

Filesize
120KB

Download
memory/2148-43-0x0000000005930000-0x000000000593A000-memory.dmp

Filesize
40KB

Download
memory/2148-18-0x0000000005790000-0x000000000582C000-memory.dmp

Filesize
624KB

Download
memory/2148-15-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/2360-9-0x00000000050D0000-0x000000000510C000-memory.dmp

Filesize
240KB

Download
memory/2360-7-0x000000007500E000-0x000000007500F000-memory.dmp

Filesize
4KB

Download
memory/2360-1-0x0000000000660000-0x00000000006A6000-memory.dmp

Filesize
280KB

Download
memory/2360-0-0x000000007500E000-0x000000007500F000-memory.dmp

Filesize
4KB

Download
memory/2360-2-0x0000000005610000-0x0000000005BB4000-memory.dmp

Filesize
5.6MB

Download
memory/2360-16-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/2360-8-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/2360-10-0x00000000051D0000-0x00000000051EE000-memory.dmp

Filesize
120KB

Download
memory/2360-3-0x0000000004F80000-0x0000000005012000-memory.dmp

Filesize
584KB

Download
memory/2360-4-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/2360-5-0x0000000002C20000-0x0000000002C2A000-memory.dmp

Filesize
40KB

Download
memory/2360-6-0x0000000005150000-0x00000000051C6000-memory.dmp

Filesize
472KB

Download
memory/5080-19-0x0000000005590000-0x0000000005BB8000-memory.dmp

Filesize
6.2MB

Download
memory/5080-20-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/5080-30-0x0000000005E40000-0x0000000005EA6000-memory.dmp

Filesize
408KB

Download
memory/5080-40-0x00000000064A0000-0x00000000064BE000-memory.dmp

Filesize
120KB

Download
memory/5080-41-0x00000000064E0000-0x000000000652C000-memory.dmp

Filesize
304KB

Download
memory/5080-28-0x0000000005DD0000-0x0000000005E36000-memory.dmp

Filesize
408KB

Download
memory/5080-22-0x0000000005D30000-0x0000000005D52000-memory.dmp

Filesize
136KB

Download
memory/5080-36-0x0000000005EB0000-0x0000000006204000-memory.dmp

Filesize
3.3MB

Download
memory/5080-17-0x0000000004F20000-0x0000000004F56000-memory.dmp

Filesize
216KB

Download
memory/5080-46-0x0000000007500000-0x0000000007596000-memory.dmp

Filesize
600KB

Download
memory/5080-47-0x0000000006980000-0x000000000699A000-memory.dmp

Filesize
104KB

Download
memory/5080-48-0x0000000006A20000-0x0000000006A42000-memory.dmp

Filesize
136KB

Download
memory/5080-51-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/5080-14-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads