nanocore | 87aacae4f59608d403306cc0dca5575540df07a2ab672097daf0ee920f79638f

General

Target

f81842f9725cf1a1bb81bb0790c79320N.exe
Size

281KB
MD5

f81842f9725cf1a1bb81bb0790c79320
SHA1

e1f7bf243b03bfbc56d3ec68a45e229976322869
SHA256

87aacae4f59608d403306cc0dca5575540df07a2ab672097daf0ee920f79638f
SHA512

aaf521da8c45bc88c281d6c3737c44c6a3d08f3b263db84747f18a145a289027bd0d95874da7cdd9cfe7cc4018c258d170afb245c739ec1b8b88b811abac5106
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfK8:boSeGUA5YZazpXUmZhZ6SD8

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

Executes dropped EXE 2 IoCs

pid	Process
2776	a1punf5t2of.exe
1228	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2800	f81842f9725cf1a1bb81bb0790c79320N.exe
2776	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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	f81842f9725cf1a1bb81bb0790c79320N.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 2776 set thread context of 1228	2776	a1punf5t2of.exe	31

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	f81842f9725cf1a1bb81bb0790c79320N.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
1228	a1punf5t2of.exe
1228	a1punf5t2of.exe
1228	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1228	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1228	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2800 wrote to memory of 2776	2800	f81842f9725cf1a1bb81bb0790c79320N.exe	30
PID 2800 wrote to memory of 2776	2800	f81842f9725cf1a1bb81bb0790c79320N.exe	30
PID 2800 wrote to memory of 2776	2800	f81842f9725cf1a1bb81bb0790c79320N.exe	30
PID 2800 wrote to memory of 2776	2800	f81842f9725cf1a1bb81bb0790c79320N.exe	30
PID 2800 wrote to memory of 2776	2800	f81842f9725cf1a1bb81bb0790c79320N.exe	30
PID 2800 wrote to memory of 2776	2800	f81842f9725cf1a1bb81bb0790c79320N.exe	30
PID 2800 wrote to memory of 2776	2800	f81842f9725cf1a1bb81bb0790c79320N.exe	30
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31
PID 2776 wrote to memory of 1228	2776	a1punf5t2of.exe	31

C:\Users\Admin\AppData\Local\Temp\f81842f9725cf1a1bb81bb0790c79320N.exe
"C:\Users\Admin\AppData\Local\Temp\f81842f9725cf1a1bb81bb0790c79320N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2800
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2776
- - 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:1228

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

System Information Discovery

2

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

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

Filesize
281KB

MD5
7e2dc2a0e3920f24fe10395444aae024

SHA1
4a60693e8a3e954c6d63531578a477e233d21601

SHA256
13357c15a6a67f66634e2174014fa32d500fbab0397c4474a5285ce8790ddcd1

SHA512
08838942a7744f0a3a04c81799d0edade0274a6f979d60c4171e90c8c15cc80bc37fb0dfffb9a1ed7e1e12198690eef474fde25c12559396bc2914b1de9aae18

Download Submit
memory/1228-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1228-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1228-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1228-37-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1228-39-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1228-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1228-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1228-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-19-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2776-17-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2776-18-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2776-41-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2776-20-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2776-21-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2776-16-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-15-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-6-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-5-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-4-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-3-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-2-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-1-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-0-0x0000000074AE1000-0x0000000074AE2000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads