nanocore | 945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76

General

Target

945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76N.exe
Size

281KB
MD5

e996f39dc7aaedb7708907aa52dd8fd0
SHA1

df690b3f42a2a9d2934730976bcb267994e99948
SHA256

945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76
SHA512

d3cf6bf102fbb47e79d104f6c73696a73b625e8c1680573cd22d9cd206795eae7d10c02ff1c7c09387264094bd51aa7501819f8ab181db4217b3218e8636ebfe
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66f8:boSeGUA5YZazpXUmZhZ6U

Score

10^/10

nanocore defense_evasion discovery 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
Nanocore family
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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation	945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76N.exe

Executes dropped EXE 2 IoCs

pid	Process
4068	a1punf5t2of.exe
3636	a1punf5t2of.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76N.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_evasion trojan

System Information Discovery

T1082

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4068 set thread context of 3636	4068	a1punf5t2of.exe	98

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

System Information Discovery
T1082

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76N.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

pid	Process
3636	a1punf5t2of.exe
3636	a1punf5t2of.exe
3636	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3636	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3636	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5508 wrote to memory of 4068	5508	945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76N.exe	97
PID 5508 wrote to memory of 4068	5508	945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76N.exe	97
PID 5508 wrote to memory of 4068	5508	945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76N.exe	97
PID 4068 wrote to memory of 3636	4068	a1punf5t2of.exe	98
PID 4068 wrote to memory of 3636	4068	a1punf5t2of.exe	98
PID 4068 wrote to memory of 3636	4068	a1punf5t2of.exe	98
PID 4068 wrote to memory of 3636	4068	a1punf5t2of.exe	98
PID 4068 wrote to memory of 3636	4068	a1punf5t2of.exe	98
PID 4068 wrote to memory of 3636	4068	a1punf5t2of.exe	98
PID 4068 wrote to memory of 3636	4068	a1punf5t2of.exe	98
PID 4068 wrote to memory of 3636	4068	a1punf5t2of.exe	98

C:\Users\Admin\AppData\Local\Temp\945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76N.exe
"C:\Users\Admin\AppData\Local\Temp\945bf76fc6fa7ec4590c1eb31d91626cd303e375aed453406585a8e976196d76N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5508
- 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:4068
- - 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:3636

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

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Downloads

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

Filesize
281KB

MD5
9f8b5a52c6e693098e869b4517464257

SHA1
1299290f2022a1127c5c0cf6d7fbd212653c55bf

SHA256
3612097420a8abce0237004a756e7eef7cebbaedf4bb5daf77a4e259aea08159

SHA512
e9ee263301c6f7858e5edf595596e2ddf22b25e627e3e0eceb06c307b38595e3d101339ecdbe6d9fc5b3e741627dd1ae8226a03f52318f2e3b60a236399e5db6

Download Submit
memory/3636-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3636-41-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/3636-38-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/3636-37-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/3636-35-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/3636-34-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/3636-33-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/3636-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3636-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4068-23-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/4068-24-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/4068-40-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/4068-25-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/4068-26-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/4068-27-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/4068-22-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/5508-21-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/5508-7-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/5508-6-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/5508-5-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/5508-4-0x0000000075492000-0x0000000075493000-memory.dmp

Filesize
4KB

Download
memory/5508-3-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/5508-2-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/5508-0-0x0000000075492000-0x0000000075493000-memory.dmp

Filesize
4KB

Download
memory/5508-1-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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