nanocore | c07f900c54a1ab2f5e84bcc079f40185fc2c509f280713296d03ebe3f6634f02

General

Target

4fad4e5a1864e49121e55e0b810f2d70N.exe
Size

280KB
MD5

4fad4e5a1864e49121e55e0b810f2d70
SHA1

977347bb76eb2df477127fa14f5615e0408b57be
SHA256

c07f900c54a1ab2f5e84bcc079f40185fc2c509f280713296d03ebe3f6634f02
SHA512

9c16cab5ebb0863c9805c4ba27c173cffb07085230ae8ea9e7be77b6a2a077954f040690127f31fd49257a5913829d701d4ade00ceef741972bddbf021735071
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKx6:boSeGUA5YZazpXUmZhZ6SY

Score

10^/10

nanocore 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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International\Geo\Nation	4fad4e5a1864e49121e55e0b810f2d70N.exe

Executes dropped EXE 2 IoCs

pid	Process
2972	a1punf5t2of.exe
3204	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-1-5-21-2636447293-1148739154-93880854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	4fad4e5a1864e49121e55e0b810f2d70N.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 2972 set thread context of 3204	2972	a1punf5t2of.exe	97

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3204	a1punf5t2of.exe
3204	a1punf5t2of.exe
3204	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3204	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3204	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 2972	1764	4fad4e5a1864e49121e55e0b810f2d70N.exe	96
PID 1764 wrote to memory of 2972	1764	4fad4e5a1864e49121e55e0b810f2d70N.exe	96
PID 1764 wrote to memory of 2972	1764	4fad4e5a1864e49121e55e0b810f2d70N.exe	96
PID 2972 wrote to memory of 3204	2972	a1punf5t2of.exe	97
PID 2972 wrote to memory of 3204	2972	a1punf5t2of.exe	97
PID 2972 wrote to memory of 3204	2972	a1punf5t2of.exe	97
PID 2972 wrote to memory of 3204	2972	a1punf5t2of.exe	97
PID 2972 wrote to memory of 3204	2972	a1punf5t2of.exe	97
PID 2972 wrote to memory of 3204	2972	a1punf5t2of.exe	97
PID 2972 wrote to memory of 3204	2972	a1punf5t2of.exe	97
PID 2972 wrote to memory of 3204	2972	a1punf5t2of.exe	97

C:\Users\Admin\AppData\Local\Temp\4fad4e5a1864e49121e55e0b810f2d70N.exe
"C:\Users\Admin\AppData\Local\Temp\4fad4e5a1864e49121e55e0b810f2d70N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2972
- - 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
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3204

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
280KB

MD5
b1ae95d731282a670af51affc5279009

SHA1
4bb6d4cd23e93884d5c3a29a64301760bb04fead

SHA256
e25ae36c550cab9db42af789422d775e0e6d27656fac08cb8366ca242b4957e1

SHA512
980771e3bc6eef2e66db5edfe016a4f1a3139963ba6ef332537097d3f315e211b38db6e1c888b91bcb45bf8b3308dfbcaa44753455f3adf4e93918ed21cf8cd1

Download Submit
memory/1764-1-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/1764-2-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/1764-3-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/1764-17-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/1764-0-0x0000000074CD2000-0x0000000074CD3000-memory.dmp

Filesize
4KB

Download
memory/2972-33-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/2972-19-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/2972-18-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/2972-20-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/2972-21-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/2972-35-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3204-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3204-27-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3204-28-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3204-29-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3204-30-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3204-32-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3204-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3204-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3204-36-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/3204-37-0x0000000074CD0000-0x0000000075281000-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