nanocore | 93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d

General

Target

93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe
Size

1.9MB
MD5

5474cd7ac3c1177904da5a67e636b2dd
SHA1

c86c722522a0fa6b9b7f2a98f59ca04110de0d11
SHA256

93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d
SHA512

1fd6c3ffd3eb8b8f1cc873112e77345886fee715771a1612edb22247fa532f50fd1ed2f01a845fe8d02757b397c560ad0d0da0fa9f0156e9c53ac1f80fe7534f
SSDEEP

49152:GSJChpoK4czru6sRSnin2+zcRARaKpOB0IGb8sj5ip0RkNG3k+YY8:irhUEmf9Yh

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

arkseven7002.ddns.net:7727

Mutex

10a66da6-234d-4e15-acda-574830a08fca

Attributes

activate_away_mode
true
backup_connection_host
arkseven7002.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2024-04-18T01:03:25.467183836Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
true
connect_delay
4000
connection_port
7727
default_group
BLESSED BOTS
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
10a66da6-234d-4e15-acda-574830a08fca
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
arkseven7002.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

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe

Adds Run key to start application 2 TTPs 1 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\NAT Subsystem = "C:\\Program Files (x86)\\NAT Subsystem\\natss.exe"	regasm.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3840 set thread context of 4000	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	82

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\NAT Subsystem\natss.exe	regasm.exe
File created	C:\Program Files (x86)\NAT Subsystem\natss.exe	regasm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4000	regasm.exe
4000	regasm.exe
4000	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4000	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4000	regasm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3840 wrote to memory of 1320	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	81
PID 3840 wrote to memory of 1320	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	81
PID 3840 wrote to memory of 1320	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	81
PID 3840 wrote to memory of 1320	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	81
PID 3840 wrote to memory of 4000	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	82
PID 3840 wrote to memory of 4000	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	82
PID 3840 wrote to memory of 4000	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	82
PID 3840 wrote to memory of 4000	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	82
PID 3840 wrote to memory of 4000	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	82
PID 3840 wrote to memory of 4000	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	82
PID 3840 wrote to memory of 4000	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	82
PID 3840 wrote to memory of 4000	3840	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe	82

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskMgr = "1"	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe

C:\Users\Admin\AppData\Local\Temp\93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe
"C:\Users\Admin\AppData\Local\Temp\93ef803a0a6d30205faaee49199b47907fa378e2350016cc63088eeb9514931d.exe"
1⤵
- Disables RegEdit via registry modification
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3840
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  PID:1320
- 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
  PID:4000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4000-0-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4000-1-0x00000000748DE000-0x00000000748DF000-memory.dmp

Filesize
4KB

Download
memory/4000-2-0x0000000005390000-0x0000000005934000-memory.dmp

Filesize
5.6MB

Download
memory/4000-3-0x0000000004D00000-0x0000000004D92000-memory.dmp

Filesize
584KB

Download
memory/4000-4-0x0000000004E80000-0x0000000004F1C000-memory.dmp

Filesize
624KB

Download
memory/4000-5-0x0000000004DC0000-0x0000000004DCA000-memory.dmp

Filesize
40KB

Download
memory/4000-8-0x0000000004E50000-0x0000000004E5A000-memory.dmp

Filesize
40KB

Download
memory/4000-9-0x0000000004E60000-0x0000000004E7E000-memory.dmp

Filesize
120KB

Download
memory/4000-10-0x0000000005CE0000-0x0000000005CEA000-memory.dmp

Filesize
40KB

Download
memory/4000-11-0x00000000748DE000-0x00000000748DF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads