nanocore | 9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b

General

Target

9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b.exe
Size

277KB
MD5

c10aee82fa4775282c19c5886e61130b
SHA1

55dd9924707b6d855dae1abaead965cb80abba03
SHA256

9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b
SHA512

f4d0f47988ea8c6725f72020c83e599e1bcc4637ba7742e902912d1199d5c35b4bffb81f57c9903ea6d3f8227ad91964663a4d8bb54a2381ec26120687fde6e4
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fv:boSeGUA5YZazpXUmZhZ6X

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b.exe

Executes dropped EXE 2 IoCs

pid	Process
4220	a1punf5t2of.exe
3664	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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b.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 4220 set thread context of 3664	4220	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	9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b.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
3664	a1punf5t2of.exe
3664	a1punf5t2of.exe
3664	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3664	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3664	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1552 wrote to memory of 4220	1552	9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b.exe	89
PID 1552 wrote to memory of 4220	1552	9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b.exe	89
PID 1552 wrote to memory of 4220	1552	9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b.exe	89
PID 4220 wrote to memory of 3664	4220	a1punf5t2of.exe	90
PID 4220 wrote to memory of 3664	4220	a1punf5t2of.exe	90
PID 4220 wrote to memory of 3664	4220	a1punf5t2of.exe	90
PID 4220 wrote to memory of 3664	4220	a1punf5t2of.exe	90
PID 4220 wrote to memory of 3664	4220	a1punf5t2of.exe	90
PID 4220 wrote to memory of 3664	4220	a1punf5t2of.exe	90
PID 4220 wrote to memory of 3664	4220	a1punf5t2of.exe	90
PID 4220 wrote to memory of 3664	4220	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b.exe
"C:\Users\Admin\AppData\Local\Temp\9a23d94f83171611fc6a93201ed8a4d0a111d4e423922068b2719775f9afde5b.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1552
- 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:4220
- - 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:3664

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
277KB

MD5
10d2eacf2a35b0aa43410775fdafe4f9

SHA1
5bb3cebd09843285007de327c7ff02a17e76f4d0

SHA256
5867a22fa10b046b47bcab12f3704970c939359535e98c71140ba931192ded7e

SHA512
f98d7432875829e91ba9456a5711dc191acb6976b38b29d6a35a23e0791bc3065ba4f7bdd5bff7144eec43979f9488e54b3f1543a482a3e33c78b34bb74b23b4

Download Submit
memory/1552-0-0x0000000074FF2000-0x0000000074FF3000-memory.dmp

Filesize
4KB

Download
memory/1552-1-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1552-2-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1552-3-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1552-4-0x0000000074FF2000-0x0000000074FF3000-memory.dmp

Filesize
4KB

Download
memory/1552-5-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1552-6-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1552-7-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1552-22-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/3664-32-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/3664-34-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/3664-42-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/3664-39-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/3664-38-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/3664-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3664-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3664-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3664-37-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/3664-36-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/3664-33-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-23-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-21-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-26-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-25-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-41-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-24-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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