nanocore | 3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda

General

Target

3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exe
Size

282KB
MD5

8e9cdc4e61e16fef150dac299e2585ad
SHA1

cdd3dff78562abc8937b2d8cb614ba2b716aaad4
SHA256

3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda
SHA512

4161a1868488b88942cd9fe0ea65145deedaedf4ae3654c9cc77fa0afea2b4b3c005be7fdf7dad31a635f40108ae46d7cee571cdf0d0562a0e1deca408a254b6
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfM9:boSeGUA5YZazpXUmZhZ6Sh

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

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

Processes:

3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exe

Executes dropped EXE 2 IoCs

Processes:

a1punf5t2of.exea1punf5t2of.exe

pid	Process
5020	a1punf5t2of.exe
3444	a1punf5t2of.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

a1punf5t2of.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a1punf5t2of.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a1punf5t2of.exe

description	pid	Process	procid_target
PID 5020 set thread context of 3444	5020	a1punf5t2of.exe	87

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

Processes:

3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exea1punf5t2of.exea1punf5t2of.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.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

Processes:

a1punf5t2of.exe

pid	Process
3444	a1punf5t2of.exe
3444	a1punf5t2of.exe
3444	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

a1punf5t2of.exe

pid	Process
3444	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a1punf5t2of.exe

description	pid	Process
Token: SeDebugPrivilege	3444	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exea1punf5t2of.exe

description	pid	Process	procid_target
PID 1116 wrote to memory of 5020	1116	3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exe	86
PID 1116 wrote to memory of 5020	1116	3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exe	86
PID 1116 wrote to memory of 5020	1116	3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exe	86
PID 5020 wrote to memory of 3444	5020	a1punf5t2of.exe	87
PID 5020 wrote to memory of 3444	5020	a1punf5t2of.exe	87
PID 5020 wrote to memory of 3444	5020	a1punf5t2of.exe	87
PID 5020 wrote to memory of 3444	5020	a1punf5t2of.exe	87
PID 5020 wrote to memory of 3444	5020	a1punf5t2of.exe	87
PID 5020 wrote to memory of 3444	5020	a1punf5t2of.exe	87
PID 5020 wrote to memory of 3444	5020	a1punf5t2of.exe	87
PID 5020 wrote to memory of 3444	5020	a1punf5t2of.exe	87

C:\Users\Admin\AppData\Local\Temp\3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exe
"C:\Users\Admin\AppData\Local\Temp\3a39b16020e7e439c110c43bc0e117ab059268b1b999f1f0af1b625b1f553eda.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1116
- 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:5020
- - 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:3444

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
282KB

MD5
3ee3fdaede3620133cc6c4e56a6866b1

SHA1
b93058a8f9d7bdf02afb84c632f2b88fed3c5b91

SHA256
613d72ed816be8f776de6aaa61ebacd2d1399bc900d37f2dc49fcadef15efd84

SHA512
deb7806736ee039e0dd725077facc59c8536a857f55af96f9690c512c077a8a58f4377e026622c0db6ee819c61200838b9316457623098a98b4a3a8cf1825475

Download Submit
memory/1116-22-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-1-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-2-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-3-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-4-0x0000000075532000-0x0000000075533000-memory.dmp

Filesize
4KB

Download
memory/1116-5-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-6-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-7-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-0-0x0000000075532000-0x0000000075533000-memory.dmp

Filesize
4KB

Download
memory/3444-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3444-35-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/3444-41-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/3444-38-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/3444-37-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/3444-34-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/3444-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3444-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3444-33-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/5020-23-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/5020-21-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/5020-27-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/5020-26-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/5020-25-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/5020-40-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/5020-24-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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