nanocore | a51c6f9b3e3e74a89aff54e5f6b68995db00f4c88701a2bbd29331a23c05afc8

General

Target

87225db143a3c5bef68d42ae4fbbdf40N.exe
Size

281KB
MD5

87225db143a3c5bef68d42ae4fbbdf40
SHA1

0729df47a4f205632005d27fd8655031b86bc571
SHA256

a51c6f9b3e3e74a89aff54e5f6b68995db00f4c88701a2bbd29331a23c05afc8
SHA512

734493929ee4d25a1090cc0bea6e0e6dbb8331f57a9ae3dd6cdebfa4c23b31a7ce2466dd086773527a326666c7fa94f52c868c491492a49e73ba3dd5e3cdf06a
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfe:boSeGUA5YZazpXUmZhZ6SD

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sysupdate24.ddns.net:45400

Mutex

ae82ab7f-db07-49ee-9d2b-76075d76f37f

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
buffer_size
65535
build_time
2020-04-24T17:41:53.492468936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
45400
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
ae82ab7f-db07-49ee-9d2b-76075d76f37f
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
sysupdate24.ddns.net
primary_dns_server
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

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:

87225db143a3c5bef68d42ae4fbbdf40N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	87225db143a3c5bef68d42ae4fbbdf40N.exe

Executes dropped EXE 2 IoCs

Processes:

a1punf5t2of.exea1punf5t2of.exe

pid process

628 a1punf5t2of.exe
1656 a1punf5t2of.exe

pid	process
628	a1punf5t2of.exe
1656	a1punf5t2of.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

87225db143a3c5bef68d42ae4fbbdf40N.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	87225db143a3c5bef68d42ae4fbbdf40N.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

a1punf5t2of.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a1punf5t2of.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

a1punf5t2of.exe

description pid process target process

PID 628 set thread context of 1656 628 a1punf5t2of.exe a1punf5t2of.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a1punf5t2of.exe

description	pid	process	target process
PID 628 set thread context of 1656	628	a1punf5t2of.exe	a1punf5t2of.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

87225db143a3c5bef68d42ae4fbbdf40N.exea1punf5t2of.exea1punf5t2of.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87225db143a3c5bef68d42ae4fbbdf40N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

a1punf5t2of.exe

pid process

1656 a1punf5t2of.exe
1656 a1punf5t2of.exe
1656 a1punf5t2of.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

a1punf5t2of.exe

pid process

1656 a1punf5t2of.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a1punf5t2of.exe

description pid process

Token: SeDebugPrivilege 1656 a1punf5t2of.exe

pid	process
1656	a1punf5t2of.exe
1656	a1punf5t2of.exe
1656	a1punf5t2of.exe

pid	process
1656	a1punf5t2of.exe

description	pid	process
Token: SeDebugPrivilege	1656	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

87225db143a3c5bef68d42ae4fbbdf40N.exea1punf5t2of.exe

description	pid	process	target process
PID 2472 wrote to memory of 628	2472	87225db143a3c5bef68d42ae4fbbdf40N.exe	a1punf5t2of.exe
PID 2472 wrote to memory of 628	2472	87225db143a3c5bef68d42ae4fbbdf40N.exe	a1punf5t2of.exe
PID 2472 wrote to memory of 628	2472	87225db143a3c5bef68d42ae4fbbdf40N.exe	a1punf5t2of.exe
PID 628 wrote to memory of 1656	628	a1punf5t2of.exe	a1punf5t2of.exe
PID 628 wrote to memory of 1656	628	a1punf5t2of.exe	a1punf5t2of.exe
PID 628 wrote to memory of 1656	628	a1punf5t2of.exe	a1punf5t2of.exe
PID 628 wrote to memory of 1656	628	a1punf5t2of.exe	a1punf5t2of.exe
PID 628 wrote to memory of 1656	628	a1punf5t2of.exe	a1punf5t2of.exe
PID 628 wrote to memory of 1656	628	a1punf5t2of.exe	a1punf5t2of.exe
PID 628 wrote to memory of 1656	628	a1punf5t2of.exe	a1punf5t2of.exe
PID 628 wrote to memory of 1656	628	a1punf5t2of.exe	a1punf5t2of.exe

C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe
"C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2472

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:628

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
3⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
281KB

MD5
058616289fa26417da1c3a92591b47f8

SHA1
5cde9a59cce131931fabece0a0fb8d4e7f1bd99c

SHA256
55ba0b09cdeaf7d08c141c18a15f823a7680b63cf82452857d4074e3c8308aab

SHA512
374003efd116a8df5ad4e99635aceacf4d7aa59375da9dfffed1468a7f842859d2ab7e394c27d44fe3c62d0545b116236b0117e6d8051c9922a44b996be78f6c

Download Submit
memory/628-20-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/628-18-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/628-19-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/628-32-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/628-30-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/1656-29-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/1656-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1656-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1656-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1656-33-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/1656-34-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/1656-26-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/1656-27-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/2472-17-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/2472-1-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/2472-3-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/2472-0-0x00000000748F2000-0x00000000748F3000-memory.dmp

Filesize
4KB

Download
memory/2472-2-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads