nanocore | b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28

General

Target

b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe
Size

254KB
MD5

03efa084cc3f8f51111e8d6cb79dd6c0
SHA1

2acd95f4592909b4cf1ba7bc2665a829384eed3b
SHA256

b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28
SHA512

811e958a3a3f6d3218749ac69e5aa731e1e371503109dbdde28fa36dd81cc7c39328288b9535ad94abef8c3fb2c9f856c572e2319ed48f77b7a1faa34a7c5e3a
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4i:EeGUA5YZazpXUmZhPi

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe

Executes dropped EXE 2 IoCs

pid	Process
1200	a1punf5t2of.exe
3612	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.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 1200 set thread context of 3612	1200	a1punf5t2of.exe	99

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	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.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
3612	a1punf5t2of.exe
3612	a1punf5t2of.exe
3612	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3612	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3612	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 1200	1184	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	98
PID 1184 wrote to memory of 1200	1184	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	98
PID 1184 wrote to memory of 1200	1184	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	98
PID 1200 wrote to memory of 3612	1200	a1punf5t2of.exe	99
PID 1200 wrote to memory of 3612	1200	a1punf5t2of.exe	99
PID 1200 wrote to memory of 3612	1200	a1punf5t2of.exe	99
PID 1200 wrote to memory of 3612	1200	a1punf5t2of.exe	99
PID 1200 wrote to memory of 3612	1200	a1punf5t2of.exe	99
PID 1200 wrote to memory of 3612	1200	a1punf5t2of.exe	99
PID 1200 wrote to memory of 3612	1200	a1punf5t2of.exe	99
PID 1200 wrote to memory of 3612	1200	a1punf5t2of.exe	99

C:\Users\Admin\AppData\Local\Temp\b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe
"C:\Users\Admin\AppData\Local\Temp\b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1184
- 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:1200
- - 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:3612

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
254KB

MD5
45091b481e8ce94661a434964d144798

SHA1
7cb110ad28b560478c8b3204f6a1c8cf77f13c7a

SHA256
b0eb3a54fa319d8c3f7669d4c0baf1cf03576f2b962c5cf5e8b5a0e75aaa2a55

SHA512
ae76a94b3b9e0465c15a6f6510d92ec6da152d64084feef62d412d8e3935d199033d3d23c40e13619cdf15ac6e10fcdba0a7f5eb9d4c08eb6dd028450be4bd72

Download Submit
memory/1184-22-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1184-1-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1184-2-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1184-3-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1184-4-0x00000000747A2000-0x00000000747A3000-memory.dmp

Filesize
4KB

Download
memory/1184-5-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1184-6-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1184-7-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1184-0-0x00000000747A2000-0x00000000747A3000-memory.dmp

Filesize
4KB

Download
memory/1200-24-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1200-23-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1200-21-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1200-25-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1200-26-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/1200-41-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/3612-33-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/3612-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3612-32-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/3612-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3612-34-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/3612-36-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/3612-37-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/3612-38-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/3612-39-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/3612-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3612-42-0x00000000747A0000-0x0000000074D51000-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