nanocore | d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a

General

Target

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
Size

914KB
MD5

fa451d9fcbb382547304fb3c197df41f
SHA1

a94eab5ed10b473a368bd2b952a36e1cfb6a86f3
SHA256

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a
SHA512

4205f65b521bbd54287184c2a064f0f6b43fa500d1fb350bd81f120e7f5bca64e8201909ac105ae0d2a7196a7e1199bace5fa0533951436051deed3e44ff8ee5
SSDEEP

12288:Ha05RoPvP+hzDMm/xy/e4rJPVI80bk7DrBfJgZWw:hQPvGhHZWe4rJrMq5wW

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

judge777.ddns.net:8282

127.0.0.1:8282

Mutex

ff326974-84e5-4f7e-884c-dce6bafebcc3

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
37.235.1.177
buffer_size
65535
build_time
2020-11-15T21:34:27.835212036Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
8282
default_group
FEB
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
ff326974-84e5-4f7e-884c-dce6bafebcc3
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
judge777.ddns.net
primary_dns_server
37.235.1.174
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

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:

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

Unexpected DNS network traffic destination 6 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description	ioc
Destination IP	37.235.1.174
Destination IP	37.235.1.177
Destination IP	37.235.1.177
Destination IP	37.235.1.174
Destination IP	37.235.1.177
Destination IP	37.235.1.174

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.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"	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

description	pid	process	target process
PID 4032 set thread context of 5112	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

Drops file in Program Files directory 2 IoCs

Processes:

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

description	ioc	process
File created	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
File opened for modification	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

4480 schtasks.exe

pid	process
4480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

pid	process
5112	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
5112	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
5112	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

pid process

5112 d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

description pid process

Token: SeDebugPrivilege 5112 d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

description	pid	process
Token: SeDebugPrivilege	5112	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

description	pid	process	target process
PID 4032 wrote to memory of 4480	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	schtasks.exe
PID 4032 wrote to memory of 4480	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	schtasks.exe
PID 4032 wrote to memory of 4480	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	schtasks.exe
PID 4032 wrote to memory of 5112	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
PID 4032 wrote to memory of 5112	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
PID 4032 wrote to memory of 5112	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
PID 4032 wrote to memory of 5112	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
PID 4032 wrote to memory of 5112	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
PID 4032 wrote to memory of 5112	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
PID 4032 wrote to memory of 5112	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
PID 4032 wrote to memory of 5112	4032	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe	d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe

C:\Users\Admin\AppData\Local\Temp\d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
"C:\Users\Admin\AppData\Local\Temp\d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4032

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sfnsjitbxRvkvq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC9A9.tmp"
2⤵
- Creates scheduled task(s)
PID:4480

C:\Users\Admin\AppData\Local\Temp\d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe
"C:\Users\Admin\AppData\Local\Temp\d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.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:5112

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\d31fdbf6220e3ab12cb51cbe502fde0cb5b485c0b187791cad1a06e0117db36a.exe.log
Filesize
1KB

MD5
17573558c4e714f606f997e5157afaac

SHA1
13e16e9415ceef429aaf124139671ebeca09ed23

SHA256
c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

SHA512
f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC9A9.tmp
Filesize
1KB

MD5
334218d8945f4b313c6e32ff6e0991f2

SHA1
370b5d5460f07b950290c47890d45072e9f10c11

SHA256
f1a7d9f1ea49ada51a5fd53ed4f4d70a698d4f838ed4c67d2026c133cf230136

SHA512
090d2a41e5e515a55f516c6655009af96c8176daf71231a7a63c28aa8add4363cdcd671ac41c1b42c385a2abb3749b9453c7724f29debc8337d786bc345b7096

Download Submit
memory/4032-132-0x0000000000250000-0x000000000033A000-memory.dmp

Filesize
936KB

Download
memory/4032-133-0x0000000004CD0000-0x0000000004D6C000-memory.dmp

Filesize
624KB

Download
memory/4032-134-0x00000000053E0000-0x0000000005984000-memory.dmp

Filesize
5.6MB

Download
memory/4032-135-0x0000000004E30000-0x0000000004EC2000-memory.dmp

Filesize
584KB

Download
memory/4032-136-0x0000000004D70000-0x0000000004D7A000-memory.dmp

Filesize
40KB

Download
memory/4032-137-0x0000000005010000-0x0000000005066000-memory.dmp

Filesize
344KB

Download
memory/4480-138-0x0000000000000000-mapping.dmp

Download
memory/5112-140-0x0000000000000000-mapping.dmp

Download
memory/5112-141-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads