nanocore | 58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4

General

Target

58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe
Size

280KB
MD5

3f746c80c54dec8c40d057087a0fe2a0
SHA1

4e61dffa776f2b4cb5d6607fa3afecd899773aba
SHA256

58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4
SHA512

c28a0d68bde385af9f89c11270d8e086b4915b900068bc7a2f056e84df21e4cad3b59552371b99baaa54b63e62d105b02bea0c38d29c072c9f1b4cbb1250ab66
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66ff:boSeGUA5YZazpXUmZhZ63

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe

Executes dropped EXE 2 IoCs

pid	Process
2076	a1punf5t2of.exe
1800	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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.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 2076 set thread context of 1800	2076	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	58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.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
1800	a1punf5t2of.exe
1800	a1punf5t2of.exe
1800	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1800	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1800	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 2076	4792	58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe	89
PID 4792 wrote to memory of 2076	4792	58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe	89
PID 4792 wrote to memory of 2076	4792	58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe	89
PID 2076 wrote to memory of 1800	2076	a1punf5t2of.exe	90
PID 2076 wrote to memory of 1800	2076	a1punf5t2of.exe	90
PID 2076 wrote to memory of 1800	2076	a1punf5t2of.exe	90
PID 2076 wrote to memory of 1800	2076	a1punf5t2of.exe	90
PID 2076 wrote to memory of 1800	2076	a1punf5t2of.exe	90
PID 2076 wrote to memory of 1800	2076	a1punf5t2of.exe	90
PID 2076 wrote to memory of 1800	2076	a1punf5t2of.exe	90
PID 2076 wrote to memory of 1800	2076	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe
"C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4792
- 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:2076
- - 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:1800

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
280KB

MD5
f6bc689567c63177b1a146c8148282ae

SHA1
2982abd06a59a81683fe7030df86ca226e03f599

SHA256
57f839013a052fa8f9f147e82cc25cb628d2dc42e5415faf2fc608c1caabf627

SHA512
5efba45e29934fc865b14f0e9ec2b87ca8f63657f2b93fd54f02f81edec51160b7638ca6cd4112f59ab55a997503e0ee9acda551fadbabd173874f0d51585960

Download Submit
memory/1800-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1800-40-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/1800-37-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/1800-36-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/1800-33-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/1800-34-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/1800-32-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/1800-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1800-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2076-24-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/2076-22-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/2076-39-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/2076-25-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/2076-26-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/2076-23-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/4792-7-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/4792-21-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/4792-6-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/4792-5-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/4792-4-0x0000000074C52000-0x0000000074C53000-memory.dmp

Filesize
4KB

Download
memory/4792-3-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/4792-2-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download
memory/4792-0-0x0000000074C52000-0x0000000074C53000-memory.dmp

Filesize
4KB

Download
memory/4792-1-0x0000000074C50000-0x0000000075201000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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