nanocore | b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969

General

Target

b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969N.exe
Size

279KB
MD5

220309d129db666a1b36f562f3436760
SHA1

e6de1e4faea5c377d982de0a54d49895f02aed98
SHA256

b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969
SHA512

5a0dac1f78e513f9b59110c2a02702435993c33a59c70b5a78b8b5e617770e6292f26cfbdc958b8c4604a403f312397ccde5dc9dcbced4bf9fc5a42b6afc5a95
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66f/:boSeGUA5YZazpXUmZhZ6n

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
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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969N.exe

Executes dropped EXE 2 IoCs

pid	Process
4100	a1punf5t2of.exe
528	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969N.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 4100 set thread context of 528	4100	a1punf5t2of.exe	97

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	b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969N.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
528	a1punf5t2of.exe
528	a1punf5t2of.exe
528	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
528	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	528	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3180 wrote to memory of 4100	3180	b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969N.exe	96
PID 3180 wrote to memory of 4100	3180	b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969N.exe	96
PID 3180 wrote to memory of 4100	3180	b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969N.exe	96
PID 4100 wrote to memory of 528	4100	a1punf5t2of.exe	97
PID 4100 wrote to memory of 528	4100	a1punf5t2of.exe	97
PID 4100 wrote to memory of 528	4100	a1punf5t2of.exe	97
PID 4100 wrote to memory of 528	4100	a1punf5t2of.exe	97
PID 4100 wrote to memory of 528	4100	a1punf5t2of.exe	97
PID 4100 wrote to memory of 528	4100	a1punf5t2of.exe	97
PID 4100 wrote to memory of 528	4100	a1punf5t2of.exe	97
PID 4100 wrote to memory of 528	4100	a1punf5t2of.exe	97

C:\Users\Admin\AppData\Local\Temp\b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969N.exe
"C:\Users\Admin\AppData\Local\Temp\b3b444d0705cf19ff7fa7e80421edbf8589606b5b69015436e9f7ce269c70969N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3180
- 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:4100
- - 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:528

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
279KB

MD5
1c008fec026de3866af01d74ae201e10

SHA1
ec9be37f9bb64888bbaea0848776479ec82e4af8

SHA256
4091d012d3bc857d3f38ed519dc141d9f32a235846a3b8f268681c2f4aa19d1a

SHA512
74db3e17a7c34b3883ed72c1c263dee3e108d3f667c22ab4d1b955996b247ea454d9b396491980def8950503ba0ccf8a52845a6898abc3538eef222a22573afc

Download Submit
memory/528-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-42-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/528-39-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/528-38-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/528-37-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/528-36-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/528-34-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/528-33-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/528-32-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/528-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3180-6-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/3180-4-0x0000000074C92000-0x0000000074C93000-memory.dmp

Filesize
4KB

Download
memory/3180-1-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/3180-2-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/3180-3-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/3180-21-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/3180-5-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/3180-7-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/3180-0-0x0000000074C92000-0x0000000074C93000-memory.dmp

Filesize
4KB

Download
memory/4100-22-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/4100-25-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/4100-23-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/4100-24-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/4100-41-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download
memory/4100-26-0x0000000074C90000-0x0000000075241000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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