nanocore | 5b27db23756f4ddbd30a3875e30cdbff6cdcc1650a46e3c5a032da6f85cfdceb

General

Target

wndll.exe
Size

310KB
MD5

4e0966f48e6fe2451eae96f7696dcab9
SHA1

f37c0ca9db58a784cf77712bcfaa6cf18233b495
SHA256

5b27db23756f4ddbd30a3875e30cdbff6cdcc1650a46e3c5a032da6f85cfdceb
SHA512

19eb88285c79a199ae9ff0ccc2696973185b66f1b7bf06a6b9c4aebb269eb0da71e37a39017403e4b66adbd4071911febe08dd44e3f8c0f4adb10dfe661e9b9f

Score

10^/10

evasion trojan keylogger stealer spyware nanocore

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

gold1.dnsupdate.info:4777

gold080.ooguy.com:4777

Mutex

de1252d0-fd95-4cdc-abb5-7b12ebb4706f

Attributes

activate_away_mode
true
backup_connection_host
gold080.ooguy.com
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-04-10T22:11:42.883905836Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
4777
default_group
TMT
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
de1252d0-fd95-4cdc-abb5-7b12ebb4706f
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
gold1.dnsupdate.info
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

wndll.exesvhost.exe

description pid process

Token: SeDebugPrivilege 1668 wndll.exe
Token: SeDebugPrivilege 1784 svhost.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

wndll.exesvhost.exe

pid process

1668 wndll.exe
1668 wndll.exe
1784 svhost.exe
1784 svhost.exe
1784 svhost.exe

description	pid	process
Token: SeDebugPrivilege	1668	wndll.exe
Token: SeDebugPrivilege	1784	svhost.exe

pid	process
1668	wndll.exe
1668	wndll.exe
1784	svhost.exe
1784	svhost.exe
1784	svhost.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

wndll.exe

description	pid	process	target process
PID 1668 wrote to memory of 1784	1668	wndll.exe	svhost.exe
PID 1668 wrote to memory of 1784	1668	wndll.exe	svhost.exe
PID 1668 wrote to memory of 1784	1668	wndll.exe	svhost.exe
PID 1668 wrote to memory of 1784	1668	wndll.exe	svhost.exe
PID 1668 wrote to memory of 1784	1668	wndll.exe	svhost.exe
PID 1668 wrote to memory of 1784	1668	wndll.exe	svhost.exe
PID 1668 wrote to memory of 1784	1668	wndll.exe	svhost.exe
PID 1668 wrote to memory of 1784	1668	wndll.exe	svhost.exe
PID 1668 wrote to memory of 1784	1668	wndll.exe	svhost.exe
PID 1668 wrote to memory of 1872	1668	wndll.exe	cmd.exe
PID 1668 wrote to memory of 1872	1668	wndll.exe	cmd.exe
PID 1668 wrote to memory of 1872	1668	wndll.exe	cmd.exe
PID 1668 wrote to memory of 1872	1668	wndll.exe	cmd.exe
PID 1668 wrote to memory of 1924	1668	wndll.exe	cmd.exe
PID 1668 wrote to memory of 1924	1668	wndll.exe	cmd.exe
PID 1668 wrote to memory of 1924	1668	wndll.exe	cmd.exe
PID 1668 wrote to memory of 1924	1668	wndll.exe	cmd.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

wndll.exe

description pid process target process

PID 1668 set thread context of 1784 1668 wndll.exe svhost.exe
Executes dropped EXE 1 IoCs

Processes:

svhost.exe

pid process

1784 svhost.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

svhost.exe

pid process

1784 svhost.exe
Drops startup file 1 IoCs

Processes:

wndll.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\name.exe.lnk wndll.exe
Loads dropped DLL 3 IoCs

Processes:

wndll.exe

pid process

1668 wndll.exe
1668 wndll.exe
1668 wndll.exe
NTFS ADS 1 IoCs

Processes:

cmd.exe

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe:Zone.Identifier cmd.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

svhost.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA svhost.exe
NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

description	pid	process	target process
PID 1668 set thread context of 1784	1668	wndll.exe	svhost.exe

pid	process
1784	svhost.exe

pid	process
1784	svhost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\name.exe.lnk	wndll.exe

pid	process
1668	wndll.exe
1668	wndll.exe
1668	wndll.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe:Zone.Identifier	cmd.exe

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

C:\Users\Admin\AppData\Local\Temp\wndll.exe
"C:\Users\Admin\AppData\Local\Temp\wndll.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
- Drops startup file
- Loads dropped DLL
PID:1668

C:\Users\Admin\AppData\Local\Temp\svhost.exe
"C:\Users\Admin\AppData\Local\Temp\svhost.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Checks whether UAC is enabled
PID:1784

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c copy "C:/Users/Admin/AppData/Local/Temp/wndll.exe" "%temp%\FolderN\name.exe" /Y
2⤵
PID:1872

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c echo [zoneTransfer]ZoneID = 2 > %temp%\FolderN\name.exe:Zone.Identifier
2⤵
- NTFS ADS
PID:1924

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe

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

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

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\Users\Admin\AppData\Local\Temp\FolderN\name.exe

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\Users\Admin\AppData\Local\Temp\FolderN\name.exe

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\Users\Admin\AppData\Local\Temp\svhost.exe

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memory/1784-1-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

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memory/1784-2-0x000000000041E792-mapping.dmp

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memory/1784-4-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

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memory/1784-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

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memory/1872-7-0x0000000000000000-mapping.dmp

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memory/1924-11-0x0000000000000000-mapping.dmp

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Analysis

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