nanocore | 39355d4f0a52bdcfe7b1e58422da1ea60556e80ab090956fc80a5d00b3880b32

General

Target

PO001704201900-xls.exe
Size

381KB
MD5

813a527a915620cffa5757eb6bccbb75
SHA1

ce17f93a8dedf7f00524e2552500904f54fbbaf1
SHA256

5896c651bc097a23e0e8eff8264991d4f8337a3dc528c0a123c9c3eb19c1c080
SHA512

adc9cf77b95643e047160df842b6533033c318e93361b5f4b80d887fcb2fe789007f7bf381dd82532bcfe310ac82e258af0a6a8c6f836944b3d3c9a8f2707b7a
SSDEEP

6144:8y7Vetai/7NkM6KArLBx88f5unHcsY60BzPCTC6J5:8yx2L8LNGIunHcsmdPMb

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

bukis228.ddns.net:2888

Mutex

dd75f1a0-78c6-45b9-8931-1e71fe5f970c

Attributes

activate_away_mode
true
backup_connection_host
bukis228.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-01-27T07:09:50.233433736Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
2888
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
dd75f1a0-78c6-45b9-8931-1e71fe5f970c
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Monitor = "C:\\Program Files (x86)\\WPA Monitor\\wpamon.exe"	RegAsm.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RegAsm.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

PO001704201900-xls.exe

description pid process target process

PID 5052 set thread context of 5080 5052 PO001704201900-xls.exe RegAsm.exe

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

description	pid	process	target process
PID 5052 set thread context of 5080	5052	PO001704201900-xls.exe	RegAsm.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

description	ioc	process
File created	C:\Program Files (x86)\WPA Monitor\wpamon.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\WPA Monitor\wpamon.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

PO001704201900-xls.exeRegAsm.exe

pid	process
5052	PO001704201900-xls.exe
5052	PO001704201900-xls.exe
5052	PO001704201900-xls.exe
5052	PO001704201900-xls.exe
5052	PO001704201900-xls.exe
5052	PO001704201900-xls.exe
5052	PO001704201900-xls.exe
5052	PO001704201900-xls.exe
5080	RegAsm.exe
5080	RegAsm.exe
5080	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

5080 RegAsm.exe
Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

PO001704201900-xls.exe

pid process

5052 PO001704201900-xls.exe
5052 PO001704201900-xls.exe
5052 PO001704201900-xls.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 5080 RegAsm.exe

pid	process
5080	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	5080	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

PO001704201900-xls.exe

description	pid	process	target process
PID 5052 wrote to memory of 1480	5052	PO001704201900-xls.exe	RegAsm.exe
PID 5052 wrote to memory of 1480	5052	PO001704201900-xls.exe	RegAsm.exe
PID 5052 wrote to memory of 1480	5052	PO001704201900-xls.exe	RegAsm.exe
PID 5052 wrote to memory of 2276	5052	PO001704201900-xls.exe	RegAsm.exe
PID 5052 wrote to memory of 2276	5052	PO001704201900-xls.exe	RegAsm.exe
PID 5052 wrote to memory of 2276	5052	PO001704201900-xls.exe	RegAsm.exe
PID 5052 wrote to memory of 5080	5052	PO001704201900-xls.exe	RegAsm.exe
PID 5052 wrote to memory of 5080	5052	PO001704201900-xls.exe	RegAsm.exe
PID 5052 wrote to memory of 5080	5052	PO001704201900-xls.exe	RegAsm.exe
PID 5052 wrote to memory of 5080	5052	PO001704201900-xls.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\PO001704201900-xls.exe
"C:\Users\Admin\AppData\Local\Temp\PO001704201900-xls.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5052

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\PO001704201900-xls.exe"
2⤵
PID:1480

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\PO001704201900-xls.exe"
2⤵
PID:2276

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\PO001704201900-xls.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:5080

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

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/5052-0-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-30-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-29-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-28-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-27-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-26-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-25-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-24-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-23-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-22-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-21-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-20-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-19-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-18-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-17-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-16-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-15-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-14-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-13-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-12-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-11-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-10-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-9-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-8-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-7-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-6-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-5-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-4-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-3-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-2-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5052-1-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/5080-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads