nanocore | 1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4

General

Target

1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4N.exe
Size

279KB
MD5

66f4208642b00ab4d9733eed4e2ef4e0
SHA1

ebcd49f171c2b9228c14033e9c82be2f6bb7297f
SHA256

1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4
SHA512

c7953263146649522cffaf6bb99b8bbe42e7431246c86ae2bef71a4384e32d8c3217eaa0350bbbc30d00046940909bf0cce16dd6d65e9689055720b028a97243
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fO:boSeGUA5YZazpXUmZhZ62

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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4N.exe

Executes dropped EXE 2 IoCs

pid	Process
700	a1punf5t2of.exe
1932	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4N.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 700 set thread context of 1932	700	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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1932	a1punf5t2of.exe
1932	a1punf5t2of.exe
1932	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1932	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1932	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1128 wrote to memory of 700	1128	1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4N.exe	92
PID 1128 wrote to memory of 700	1128	1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4N.exe	92
PID 1128 wrote to memory of 700	1128	1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4N.exe	92
PID 700 wrote to memory of 1932	700	a1punf5t2of.exe	97
PID 700 wrote to memory of 1932	700	a1punf5t2of.exe	97
PID 700 wrote to memory of 1932	700	a1punf5t2of.exe	97
PID 700 wrote to memory of 1932	700	a1punf5t2of.exe	97
PID 700 wrote to memory of 1932	700	a1punf5t2of.exe	97
PID 700 wrote to memory of 1932	700	a1punf5t2of.exe	97
PID 700 wrote to memory of 1932	700	a1punf5t2of.exe	97
PID 700 wrote to memory of 1932	700	a1punf5t2of.exe	97

C:\Users\Admin\AppData\Local\Temp\1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4N.exe
"C:\Users\Admin\AppData\Local\Temp\1bd1b90bfa19d14231f7745917fa206bc8bba05b5f1c347239a0d31ea2e60cc4N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1128
- 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:700
- - 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:1932

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
052447456334365fdb78b7bc46bf3728

SHA1
5d6f55556c508a5687c6dfb70c250655511d55ca

SHA256
120cb331184c16655a212b2672bfeadd5ae4b4991f4c749c0a4c428007dd8ca5

SHA512
e37ea206f68b9ab92f041a1304d296492ab9d778bdd5b45f837cf3b4f1494b0aee108c8f5354f8c3e0f03c586ebd98c22cad3ca311044519ac2c74c7d2b3a6ff

Download Submit
memory/700-40-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/700-27-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/700-26-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/700-25-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/700-23-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/700-24-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/700-21-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1128-6-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1128-22-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1128-7-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1128-0-0x0000000075072000-0x0000000075073000-memory.dmp

Filesize
4KB

Download
memory/1128-5-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1128-4-0x0000000075072000-0x0000000075073000-memory.dmp

Filesize
4KB

Download
memory/1128-3-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1128-2-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1128-1-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1932-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1932-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1932-33-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1932-34-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1932-35-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1932-37-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1932-38-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/1932-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1932-41-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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