nanocore | 8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4

General

Target

8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4N.exe
Size

256KB
MD5

27ebb1bcf86612e8143eedb211b7d160
SHA1

226e0e89184fafdad0aaa11ca304f32792339402
SHA256

8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4
SHA512

6fbedc272538b95a46c6efd6ba28ac7fe86c272041456d15acb8f6f3a0a8d576a7933ef4d44cc5b2b418a237321df154a7e0af076dc8af9da4f03f7717e03f15
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQS4G:EeGUA5YZazpXUmZh94G

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
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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4N.exe

Executes dropped EXE 2 IoCs

pid	Process
3304	a1punf5t2of.exe
1776	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4N.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

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 3304 set thread context of 1776	3304	a1punf5t2of.exe	90

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	8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4N.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
1776	a1punf5t2of.exe
1776	a1punf5t2of.exe
1776	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1776	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1776	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3656 wrote to memory of 3304	3656	8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4N.exe	87
PID 3656 wrote to memory of 3304	3656	8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4N.exe	87
PID 3656 wrote to memory of 3304	3656	8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4N.exe	87
PID 3304 wrote to memory of 1776	3304	a1punf5t2of.exe	90
PID 3304 wrote to memory of 1776	3304	a1punf5t2of.exe	90
PID 3304 wrote to memory of 1776	3304	a1punf5t2of.exe	90
PID 3304 wrote to memory of 1776	3304	a1punf5t2of.exe	90
PID 3304 wrote to memory of 1776	3304	a1punf5t2of.exe	90
PID 3304 wrote to memory of 1776	3304	a1punf5t2of.exe	90
PID 3304 wrote to memory of 1776	3304	a1punf5t2of.exe	90
PID 3304 wrote to memory of 1776	3304	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4N.exe
"C:\Users\Admin\AppData\Local\Temp\8715b0133260fa9544180f775345f1e9b2a4552aac739ead3bbca7541fc5a3a4N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3656
- 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:3304
- - 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:1776

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
256KB

MD5
2b235751589b6817e0a1bfbcb92a6ba9

SHA1
ea4e6645c9028cb9f872f5afa4a9844e2b57bbdc

SHA256
2e88e8897d583f5d4657657c7eff8216e1da25c476d48daf90ecaf75a800a64b

SHA512
14ae23706f30fa314410013094e8dcc187986d87f4be2a9b0e2cb3d38b20a6a14577c14bf515f96152ab18002b87f624e8b69370839944d00bcf8a497d78c5ab

Download Submit
memory/1776-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1776-42-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/1776-41-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/1776-38-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/1776-37-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/1776-36-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/1776-34-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/1776-33-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/1776-32-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/1776-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1776-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3304-24-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3304-25-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3304-26-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3304-40-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3304-23-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3304-21-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3656-7-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3656-22-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3656-6-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3656-5-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3656-4-0x0000000074D42000-0x0000000074D43000-memory.dmp

Filesize
4KB

Download
memory/3656-3-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3656-0-0x0000000074D42000-0x0000000074D43000-memory.dmp

Filesize
4KB

Download
memory/3656-2-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/3656-1-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads