nanocore | 3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0

General

Target

3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0.exe
Size

257KB
MD5

03cac1d63d8e00eb7a2f7d6ce849542c
SHA1

0bfd3bfccab0c379042a42a1bc25098913e75661
SHA256

3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0
SHA512

6bdd7f0271931ef532ae31823bcc3da7badfefd3ee34b571a16d8ee31b2c697c8070b97da8e437b18b28356e85d91f85ec34f2c507143fc098b99b16e31b7fcf
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4S:EeGUA5YZazpXUmZhPS

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-1-5-21-4174397412-4125106315-2776226590-1000\Control Panel\International\Geo\Nation	3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0.exe

Executes dropped EXE 2 IoCs

pid	Process
3508	a1punf5t2of.exe
2764	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-1-5-21-4174397412-4125106315-2776226590-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0.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 3508 set thread context of 2764	3508	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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2764	a1punf5t2of.exe
2764	a1punf5t2of.exe
2764	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2764	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2764	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3604 wrote to memory of 3508	3604	3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0.exe	89
PID 3604 wrote to memory of 3508	3604	3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0.exe	89
PID 3604 wrote to memory of 3508	3604	3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0.exe	89
PID 3508 wrote to memory of 2764	3508	a1punf5t2of.exe	90
PID 3508 wrote to memory of 2764	3508	a1punf5t2of.exe	90
PID 3508 wrote to memory of 2764	3508	a1punf5t2of.exe	90
PID 3508 wrote to memory of 2764	3508	a1punf5t2of.exe	90
PID 3508 wrote to memory of 2764	3508	a1punf5t2of.exe	90
PID 3508 wrote to memory of 2764	3508	a1punf5t2of.exe	90
PID 3508 wrote to memory of 2764	3508	a1punf5t2of.exe	90
PID 3508 wrote to memory of 2764	3508	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0.exe
"C:\Users\Admin\AppData\Local\Temp\3252f7991d6eb40ea790f898db9079d41a84bb32d2739be6b2cbf4dc64b91fe0.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3604
- 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:3508
- - 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:2764

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
257KB

MD5
2c4bd7f3b2d9a2aae7a327a7206ee181

SHA1
a1c0a8bc3a891443f8d37404007365e713168c4a

SHA256
e8d38b6de2abe5db2169880fcba6cb7b3887f97a4d1a0566aeb525bbccb9bda5

SHA512
14f8832abf02e18bb712d45e699b9b17c76138751e5c09b2271d68ce5c736c6b4abffd1947840cd78f52e1da3f3950f68fb09a7fac09482ac5a83a11d58ca713

Download Submit
memory/2764-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2764-41-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/2764-38-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/2764-37-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/2764-34-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/2764-35-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/2764-33-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/2764-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2764-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3508-22-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3508-21-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3508-40-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3508-25-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3508-26-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3508-27-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3508-24-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3604-23-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3604-7-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3604-6-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3604-5-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3604-4-0x0000000075612000-0x0000000075613000-memory.dmp

Filesize
4KB

Download
memory/3604-3-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3604-2-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download
memory/3604-0-0x0000000075612000-0x0000000075613000-memory.dmp

Filesize
4KB

Download
memory/3604-1-0x0000000075610000-0x0000000075BC1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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