nanocore | fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c

General

Target

fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe
Size

255KB
MD5

0fb3c8c8ccb6c70780c93ba34b634301
SHA1

b1e874ee373732b8d60c8fabaadede58a712bed2
SHA256

fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c
SHA512

2961dd26638fe153e8d1a4c99a4443e88b5673bd73c5d918c2749f633070ab8eeb8a63d247e6bd8ad876c5c760acd2863e35fe9fd686c799eff4bdf35cae7aa2
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQSd:EeGUA5YZazpXUmZhdd

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe

Executes dropped EXE 2 IoCs

pid	Process
1464	a1punf5t2of.exe
3144	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.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 1464 set thread context of 3144	1464	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	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.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
3144	a1punf5t2of.exe
3144	a1punf5t2of.exe
3144	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3144	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3144	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3960 wrote to memory of 1464	3960	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe	97
PID 3960 wrote to memory of 1464	3960	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe	97
PID 3960 wrote to memory of 1464	3960	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe	97
PID 1464 wrote to memory of 3144	1464	a1punf5t2of.exe	98
PID 1464 wrote to memory of 3144	1464	a1punf5t2of.exe	98
PID 1464 wrote to memory of 3144	1464	a1punf5t2of.exe	98
PID 1464 wrote to memory of 3144	1464	a1punf5t2of.exe	98
PID 1464 wrote to memory of 3144	1464	a1punf5t2of.exe	98
PID 1464 wrote to memory of 3144	1464	a1punf5t2of.exe	98
PID 1464 wrote to memory of 3144	1464	a1punf5t2of.exe	98
PID 1464 wrote to memory of 3144	1464	a1punf5t2of.exe	98

C:\Users\Admin\AppData\Local\Temp\fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe
"C:\Users\Admin\AppData\Local\Temp\fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3960
- 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:1464
- - 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:3144

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
255KB

MD5
49f24b38ce5e28caa267f1d8dbed955b

SHA1
7c298c7fdcd35fa6ef1fdfb247add0b2f3d708f2

SHA256
b37280ab441c17590c0cc70186db061024947f21bcd29f813a083b19b8a12c6f

SHA512
2a1546476e788c0bdc40fa4edbd2afb99ee0653f24de9518d5ef58d0b17557fb38a22a05b463b4ea60c36b8374c10a15edeb8c546f3b15e627e7c20c5b336824

Download Submit
memory/1464-39-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1464-26-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1464-25-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1464-24-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1464-23-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1464-21-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3144-32-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3144-34-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3144-40-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3144-37-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3144-36-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3144-33-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3144-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3144-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3144-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3960-2-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3960-3-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3960-0-0x00000000754C2000-0x00000000754C3000-memory.dmp

Filesize
4KB

Download
memory/3960-4-0x00000000754C2000-0x00000000754C3000-memory.dmp

Filesize
4KB

Download
memory/3960-7-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3960-5-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3960-22-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3960-1-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/3960-6-0x00000000754C0000-0x0000000075A71000-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