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\ARP Host = "C:\\Program Files (x86)\\ARP Host\\arphost.exe"	RegAsm.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\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
1412	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1120 set thread context of 1028	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	93

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ARP Host\arphost.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\ARP Host\arphost.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	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
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

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
1976	schtasks.exe
1664	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe
1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe
1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe
1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe
1412	powershell.exe
1412	powershell.exe
1028	RegAsm.exe
1028	RegAsm.exe
1028	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1028	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe
Token: SeDebugPrivilege	1412	powershell.exe
Token: SeDebugPrivilege	1028	RegAsm.exe
Token: SeDebugPrivilege	1028	RegAsm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 1412	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	89
PID 1120 wrote to memory of 1412	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	89
PID 1120 wrote to memory of 1412	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	89
PID 1120 wrote to memory of 1804	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	91
PID 1120 wrote to memory of 1804	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	91
PID 1120 wrote to memory of 1804	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	91
PID 1120 wrote to memory of 3568	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	92
PID 1120 wrote to memory of 3568	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	92
PID 1120 wrote to memory of 3568	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	92
PID 1120 wrote to memory of 1028	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	93
PID 1120 wrote to memory of 1028	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	93
PID 1120 wrote to memory of 1028	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	93
PID 1120 wrote to memory of 1028	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	93
PID 1120 wrote to memory of 1028	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	93
PID 1120 wrote to memory of 1028	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	93
PID 1120 wrote to memory of 1028	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	93
PID 1120 wrote to memory of 1028	1120	CFB1F534DBB8DCEFC8B796D42EA10E1D.exe	93
PID 1028 wrote to memory of 1976	1028	RegAsm.exe	94
PID 1028 wrote to memory of 1976	1028	RegAsm.exe	94
PID 1028 wrote to memory of 1976	1028	RegAsm.exe	94
PID 1028 wrote to memory of 1664	1028	RegAsm.exe	96
PID 1028 wrote to memory of 1664	1028	RegAsm.exe	96
PID 1028 wrote to memory of 1664	1028	RegAsm.exe	96

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1120
- 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:1412
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1804
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:3568
- 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:1028
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD88D.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1976
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "ARP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDA25.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1664

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_a1dkptk3.2pd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD88D.tmp

Filesize
1KB

MD5
48ef7fa9033389ad7929d7a6b9d10298

SHA1
9db6cb7325c8bdf66a15f7b5f34703709a45aeb6

SHA256
0c1b5f67eeb276d1d4205b138ce32bc6149924e02281a2db8e4623a700e88f15

SHA512
ac8bd104ecbacc9bccce9e087f67e5b18072d59367ccd31d4e66132b6baaea520cba5b9b59464483d86abf74826b382c402f12e9a586c99bda8c78a0de33944e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDA25.tmp

Filesize
1KB

MD5
447ab194ab36cb1d20078d80e502b1b2

SHA1
a947b3b2c91d7c50bb8d39bd4fc91a0d0cc5b1c0

SHA256
8d5304b20b7d7dea223ce2738e5668054250d57bf6bed86b305b69924bd472f5

SHA512
49ddc557f7f6635627eea9bf0fa12a14b7b13edb235ed560ee0044a7f87fe27b686ff878d347d0273d92eb0b318b8c2bca85c0fbf42d586ed7d7da39eac6a327

Download Submit
memory/1028-43-0x0000000006630000-0x000000000664E000-memory.dmp

Filesize
120KB

Download
memory/1028-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1028-53-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1028-44-0x0000000006870000-0x000000000687A000-memory.dmp

Filesize
40KB

Download
memory/1028-42-0x0000000005820000-0x000000000582A000-memory.dmp

Filesize
40KB

Download
memory/1028-20-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1028-19-0x00000000055A0000-0x000000000563C000-memory.dmp

Filesize
624KB

Download
memory/1120-10-0x0000000005750000-0x000000000576E000-memory.dmp

Filesize
120KB

Download
memory/1120-6-0x00000000057A0000-0x0000000005816000-memory.dmp

Filesize
472KB

Download
memory/1120-5-0x0000000005490000-0x000000000549A000-memory.dmp

Filesize
40KB

Download
memory/1120-3-0x0000000005510000-0x00000000055A2000-memory.dmp

Filesize
584KB

Download
memory/1120-0-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/1120-1-0x0000000000A30000-0x0000000000A76000-memory.dmp

Filesize
280KB

Download
memory/1120-18-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1120-9-0x00000000054A0000-0x00000000054DC000-memory.dmp

Filesize
240KB

Download
memory/1120-8-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1120-7-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/1120-4-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1120-2-0x0000000005AC0000-0x0000000006064000-memory.dmp

Filesize
5.6MB

Download
memory/1412-21-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1412-45-0x0000000006130000-0x000000000614E000-memory.dmp

Filesize
120KB

Download
memory/1412-14-0x0000000004F90000-0x0000000004FC6000-memory.dmp

Filesize
216KB

Download
memory/1412-37-0x00000000061C0000-0x0000000006514000-memory.dmp

Filesize
3.3MB

Download
memory/1412-17-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1412-15-0x0000000005760000-0x0000000005D88000-memory.dmp

Filesize
6.2MB

Download
memory/1412-36-0x0000000006150000-0x00000000061B6000-memory.dmp

Filesize
408KB

Download
memory/1412-16-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1412-35-0x0000000005F70000-0x0000000005FD6000-memory.dmp

Filesize
408KB

Download
memory/1412-46-0x0000000006540000-0x000000000658C000-memory.dmp

Filesize
304KB

Download
memory/1412-47-0x00000000069F0000-0x0000000006A86000-memory.dmp

Filesize
600KB

Download
memory/1412-48-0x0000000006930000-0x000000000694A000-memory.dmp

Filesize
104KB

Download
memory/1412-49-0x0000000006980000-0x00000000069A2000-memory.dmp

Filesize
136KB

Download
memory/1412-52-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1412-30-0x0000000005DC0000-0x0000000005DE2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads