nanocore | 59b3453fdaae52815822c89df9595a8e54cbd22bcefb75be3aae1b5c4d88df26

General

Target

59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
Size

557KB
MD5

263a986b3341f186b7edde253915c8c8
SHA1

8711abc4850708f609b47519489e9ec670bc53cf
SHA256

59b3453fdaae52815822c89df9595a8e54cbd22bcefb75be3aae1b5c4d88df26
SHA512

9990051333eaecb7564242266e8e43d92c53da239a0140ad865691a34bcb077fe7ee74e5ff45d207b7bb6f654d1dec7caef384e5958f6512e63710381f22b37a
SSDEEP

12288:FrnpkjfuS8KEqUzx5ZxeSu7hvj4HkFTSm5LglIBF3X3um:JpkTuSCqUbA71jUkFDL5BF3X3V

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

microsoft1337.ddns.net:1447

41.216.183.49:1447

Mutex

937bb3d2-5fda-473f-a587-a19ec5938661

Attributes

activate_away_mode
true
backup_connection_host
41.216.183.49
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-07-30T21:53:43.883522036Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1447
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
937bb3d2-5fda-473f-a587-a19ec5938661
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
microsoft1337.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
Executes dropped EXE 2 IoCs

Processes:

59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exenVii1S.exe

pid process

1504 59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
2052 nVii1S.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

nVii1S.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Subsystem = "C:\\Program Files (x86)\\DHCP Subsystem\\dhcpss.exe"	nVii1S.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

nVii1S.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA nVii1S.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	nVii1S.exe

Drops file in Program Files directory 2 IoCs

Processes:

nVii1S.exe

description	ioc	process
File created	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	nVii1S.exe
File opened for modification	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	nVii1S.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exepowershell.exenVii1S.exe

pid	process
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
4848	powershell.exe
4848	powershell.exe
2052	nVii1S.exe
2052	nVii1S.exe
2052	nVii1S.exe
2052	nVii1S.exe
2052	nVii1S.exe
2052	nVii1S.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

nVii1S.exe

pid process

2052 nVii1S.exe

pid	process
2052	nVii1S.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exepowershell.exenVii1S.exe

description	pid	process
Token: SeDebugPrivilege	5076	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
Token: SeDebugPrivilege	1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
Token: SeDebugPrivilege	4848	powershell.exe
Token: SeDebugPrivilege	2052	nVii1S.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exepowershell.exe

description	pid	process	target process
PID 1504 wrote to memory of 4848	1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe	powershell.exe
PID 1504 wrote to memory of 4848	1504	59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe	powershell.exe
PID 4848 wrote to memory of 2052	4848	powershell.exe	nVii1S.exe
PID 4848 wrote to memory of 2052	4848	powershell.exe	nVii1S.exe
PID 4848 wrote to memory of 2052	4848	powershell.exe	nVii1S.exe

C:\Users\Admin\AppData\Local\Temp\59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
"C:\Users\Admin\AppData\Local\Temp\59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5076

C:\Users\Admin\AppData\Roaming\59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
C:\Users\Admin\AppData\Roaming\59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe
1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1504

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUAByAG8AYwBlAHMAcwAgAC0ARgBpAGwAZQBQAGEAdABoACAAIgBDADoAXABVAHMAZQByAHMAXABBAGQAbQBpAG4AXABBAHAAcABEAGEAdABhAFwATABvAGMAYQBsAFwAVABlAG0AcABcAG4AVgBpAGkAMQBTAC4AZQB4AGUAIgA=
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4848

C:\Users\Admin\AppData\Local\Temp\nVii1S.exe
"C:\Users\Admin\AppData\Local\Temp\nVii1S.exe"
3⤵
- Executes dropped EXE
- 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:2052

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nVii1S.exe

Filesize
202KB

MD5
d1c50cad229bca00c7c6548ed1489d0a

SHA1
a02c38c129178dde442b1cd4a4d11fbe177c513f

SHA256
7f4cc04bfb8b2c562fbbff9e48c4ed13cd83f7e8cbadcef7c5cf205308cf5470

SHA512
309312c1071a57c3d9ee1555e27a65940be13ed749977012adb97d197da5ef1be246f1de61d1924ce9df950475f37383761b87d2af61c18d5cfeea365b452ff4

Download Submit
C:\Users\Admin\AppData\Local\Temp\nVii1S.exe

Filesize
202KB

MD5
d1c50cad229bca00c7c6548ed1489d0a

SHA1
a02c38c129178dde442b1cd4a4d11fbe177c513f

SHA256
7f4cc04bfb8b2c562fbbff9e48c4ed13cd83f7e8cbadcef7c5cf205308cf5470

SHA512
309312c1071a57c3d9ee1555e27a65940be13ed749977012adb97d197da5ef1be246f1de61d1924ce9df950475f37383761b87d2af61c18d5cfeea365b452ff4

Download Submit
C:\Users\Admin\AppData\Roaming\59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe

Filesize
557KB

MD5
263a986b3341f186b7edde253915c8c8

SHA1
8711abc4850708f609b47519489e9ec670bc53cf

SHA256
59b3453fdaae52815822c89df9595a8e54cbd22bcefb75be3aae1b5c4d88df26

SHA512
9990051333eaecb7564242266e8e43d92c53da239a0140ad865691a34bcb077fe7ee74e5ff45d207b7bb6f654d1dec7caef384e5958f6512e63710381f22b37a

Download Submit
C:\Users\Admin\AppData\Roaming\59B3453FDAAE52815822C89DF9595A8E54CBD22BCEFB7.exe

Filesize
557KB

MD5
263a986b3341f186b7edde253915c8c8

SHA1
8711abc4850708f609b47519489e9ec670bc53cf

SHA256
59b3453fdaae52815822c89df9595a8e54cbd22bcefb75be3aae1b5c4d88df26

SHA512
9990051333eaecb7564242266e8e43d92c53da239a0140ad865691a34bcb077fe7ee74e5ff45d207b7bb6f654d1dec7caef384e5958f6512e63710381f22b37a

Download Submit
memory/1504-138-0x00007FFAB7130000-0x00007FFAB7BF1000-memory.dmp

Filesize
10.8MB

Download
memory/1504-139-0x00007FFAB7130000-0x00007FFAB7BF1000-memory.dmp

Filesize
10.8MB

Download
memory/2052-144-0x0000000000000000-mapping.dmp

Download
memory/2052-147-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2052-148-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4848-140-0x0000000000000000-mapping.dmp

Download
memory/4848-141-0x0000017346C70000-0x0000017346C92000-memory.dmp

Filesize
136KB

Download
memory/4848-142-0x00007FFAB7130000-0x00007FFAB7BF1000-memory.dmp

Filesize
10.8MB

Download
memory/4848-146-0x00007FFAB7130000-0x00007FFAB7BF1000-memory.dmp

Filesize
10.8MB

Download
memory/5076-137-0x00007FFAB7130000-0x00007FFAB7BF1000-memory.dmp

Filesize
10.8MB

Download
memory/5076-134-0x00007FFAB7130000-0x00007FFAB7BF1000-memory.dmp

Filesize
10.8MB

Download
memory/5076-132-0x00000000001F0000-0x000000000027E000-memory.dmp

Filesize
568KB

Download
memory/5076-133-0x00007FFAB7130000-0x00007FFAB7BF1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads