nanocore | 1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4

General

Target

1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe
Size

3.5MB
MD5

540df7784dd16658486dc2caf73ca2a5
SHA1

e203fbc4c4fc05def6784953933dc15c7495f96d
SHA256

1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4
SHA512

e41dcf7c66ba14b39423863975d9cf91e008f67bff103035dd34c6acf113abd84fdb4a72751a060f63852d5a34a17db5f95d77a648515cee15f787da3a0e2cf9
SSDEEP

49152:6Ob699GhOeeYrHhxNg0Dobuh9CYFQqgFClfN8SIP1aJ5+BEh:69vYrdnHSSI4JYBEh

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

Processes:

1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

installutil.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WAN Subsystem = "C:\\Program Files (x86)\\WAN Subsystem\\wanss.exe"	installutil.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe

description	pid	process	target process
PID 2152 set thread context of 2564	2152	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe	installutil.exe

Drops file in Program Files directory 2 IoCs

Processes:

installutil.exe

description	ioc	process
File created	C:\Program Files (x86)\WAN Subsystem\wanss.exe	installutil.exe
File opened for modification	C:\Program Files (x86)\WAN Subsystem\wanss.exe	installutil.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

installutil.exe

pid process

2564 installutil.exe
2564 installutil.exe
2564 installutil.exe
2564 installutil.exe
2564 installutil.exe
2564 installutil.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

installutil.exe

pid process

2564 installutil.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

installutil.exe

description pid process

Token: SeDebugPrivilege 2564 installutil.exe

pid	process
2564	installutil.exe
2564	installutil.exe
2564	installutil.exe
2564	installutil.exe
2564	installutil.exe
2564	installutil.exe

pid	process
2564	installutil.exe

description	pid	process
Token: SeDebugPrivilege	2564	installutil.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe

description	pid	process	target process
PID 2152 wrote to memory of 2564	2152	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe	installutil.exe
PID 2152 wrote to memory of 2564	2152	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe	installutil.exe
PID 2152 wrote to memory of 2564	2152	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe	installutil.exe
PID 2152 wrote to memory of 2564	2152	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe	installutil.exe
PID 2152 wrote to memory of 2564	2152	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe	installutil.exe
PID 2152 wrote to memory of 2564	2152	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe	installutil.exe
PID 2152 wrote to memory of 2564	2152	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe	installutil.exe
PID 2152 wrote to memory of 2564	2152	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe	installutil.exe

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

Processes:

1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskMgr = "1"	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe

C:\Users\Admin\AppData\Local\Temp\1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe
"C:\Users\Admin\AppData\Local\Temp\1b5a9c840d8932be77aa43135038742007e1e1ca5d9b8954966ddedb703a0ee4.exe"
1⤵
- Disables RegEdit via registry modification
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2152

C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2564

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/2564-0-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2564-1-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/2564-2-0x0000000005470000-0x0000000005A14000-memory.dmp

Filesize
5.6MB

Download
memory/2564-3-0x0000000004EC0000-0x0000000004F52000-memory.dmp

Filesize
584KB

Download
memory/2564-4-0x0000000005000000-0x000000000509C000-memory.dmp

Filesize
624KB

Download
memory/2564-5-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/2564-6-0x0000000004FB0000-0x0000000004FBA000-memory.dmp

Filesize
40KB

Download
memory/2564-9-0x00000000051C0000-0x00000000051CA000-memory.dmp

Filesize
40KB

Download
memory/2564-10-0x0000000005B60000-0x0000000005B7E000-memory.dmp

Filesize
120KB

Download
memory/2564-11-0x0000000005ED0000-0x0000000005EDA000-memory.dmp

Filesize
40KB

Download
memory/2564-14-0x0000000006530000-0x0000000006542000-memory.dmp

Filesize
72KB

Download
memory/2564-15-0x0000000006540000-0x000000000655A000-memory.dmp

Filesize
104KB

Download
memory/2564-16-0x0000000006570000-0x000000000657E000-memory.dmp

Filesize
56KB

Download
memory/2564-18-0x0000000006590000-0x000000000659E000-memory.dmp

Filesize
56KB

Download
memory/2564-20-0x00000000065B0000-0x00000000065C4000-memory.dmp

Filesize
80KB

Download
memory/2564-19-0x00000000065A0000-0x00000000065AC000-memory.dmp

Filesize
48KB

Download
memory/2564-21-0x00000000065C0000-0x00000000065D0000-memory.dmp

Filesize
64KB

Download
memory/2564-22-0x00000000065E0000-0x00000000065F4000-memory.dmp

Filesize
80KB

Download
memory/2564-17-0x0000000006580000-0x0000000006592000-memory.dmp

Filesize
72KB

Download
memory/2564-23-0x0000000006600000-0x000000000660E000-memory.dmp

Filesize
56KB

Download
memory/2564-24-0x0000000006610000-0x000000000663E000-memory.dmp

Filesize
184KB

Download
memory/2564-25-0x0000000006650000-0x0000000006664000-memory.dmp

Filesize
80KB

Download
memory/2564-26-0x0000000006810000-0x0000000006876000-memory.dmp

Filesize
408KB

Download
memory/2564-28-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/2564-29-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads