nanocore | 5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6

General

Target

5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6.exe
Size

278KB
MD5

4e6c9036bcf56456162cbb7d07199673
SHA1

0d8a0600f41b03db73a25ef015854f6a7e66fed5
SHA256

5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6
SHA512

db4253fdfccc0d3efe7437f51864bea4b7e2dcd83960e49ff20a18a5a709e9b805ae67ef85ef93cd7cf343a9303eb5ef6ebbf8f22bd9ee54ff0a8d8f30489561
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fA:boSeGUA5YZazpXUmZhZ6o

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6.exe

Executes dropped EXE 2 IoCs

pid	Process
1328	a1punf5t2of.exe
2988	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-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6.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 1328 set thread context of 2988	1328	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	5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6.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
2988	a1punf5t2of.exe
2988	a1punf5t2of.exe
2988	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2988	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2988	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1832 wrote to memory of 1328	1832	5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6.exe	84
PID 1832 wrote to memory of 1328	1832	5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6.exe	84
PID 1832 wrote to memory of 1328	1832	5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6.exe	84
PID 1328 wrote to memory of 2988	1328	a1punf5t2of.exe	90
PID 1328 wrote to memory of 2988	1328	a1punf5t2of.exe	90
PID 1328 wrote to memory of 2988	1328	a1punf5t2of.exe	90
PID 1328 wrote to memory of 2988	1328	a1punf5t2of.exe	90
PID 1328 wrote to memory of 2988	1328	a1punf5t2of.exe	90
PID 1328 wrote to memory of 2988	1328	a1punf5t2of.exe	90
PID 1328 wrote to memory of 2988	1328	a1punf5t2of.exe	90
PID 1328 wrote to memory of 2988	1328	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6.exe
"C:\Users\Admin\AppData\Local\Temp\5f01e1720dd7baf44f60c10305fc24dd97f23e9cb5c01c94164b60703e30aec6.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1832
- 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:1328
- - 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:2988

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
278KB

MD5
0f23a340de4d9eaf7499799066eb7d56

SHA1
0de9573e39556fc72a8f49cc80ad630a88301d91

SHA256
dbd2a537ca43f3b43ef0ab66848a7a9667878715d8c71ab5fdb06773227ccd99

SHA512
d7eefc0403f5c274cae21492baa54d3760b98e63b280342f35746e6df91c5b6dec1f0f9bf060153960bbba3820b27f008f0997ade8b8c9532f64df7d684e9185

Download Submit
memory/1328-40-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1328-27-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1328-26-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1328-25-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1328-24-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1328-23-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1328-21-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1832-6-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1832-22-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1832-7-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1832-0-0x00000000754E2000-0x00000000754E3000-memory.dmp

Filesize
4KB

Download
memory/1832-5-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1832-4-0x00000000754E2000-0x00000000754E3000-memory.dmp

Filesize
4KB

Download
memory/1832-3-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1832-2-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/1832-1-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/2988-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2988-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2988-33-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/2988-34-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/2988-35-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/2988-37-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/2988-38-0x00000000754E0000-0x0000000075A91000-memory.dmp

Filesize
5.7MB

Download
memory/2988-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2988-41-0x00000000754E0000-0x0000000075A91000-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