nanocore | 5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c

General

Target

5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c.exe
Size

282KB
MD5

2d6af5dfbff4d54598a80b7104253adc
SHA1

1db5de5772df27e88bb55dc43c371b99bbc54c54
SHA256

5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c
SHA512

1439b75dafb95d5d390061e94743b30d667634183f52dc5dea3bb9d09d7dd36f108f0a4684426a57fa0494f0c05e81133feb72464adb0ec6f77143644086743b
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfKB:boSeGUA5YZazpXUmZhZ6SDB

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c.exe

Executes dropped EXE 2 IoCs

pid	Process
3680	a1punf5t2of.exe
2948	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-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c.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 3680 set thread context of 2948	3680	a1punf5t2of.exe	95

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	5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c.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
2948	a1punf5t2of.exe
2948	a1punf5t2of.exe
2948	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2948	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2948	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3316 wrote to memory of 3680	3316	5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c.exe	94
PID 3316 wrote to memory of 3680	3316	5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c.exe	94
PID 3316 wrote to memory of 3680	3316	5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c.exe	94
PID 3680 wrote to memory of 2948	3680	a1punf5t2of.exe	95
PID 3680 wrote to memory of 2948	3680	a1punf5t2of.exe	95
PID 3680 wrote to memory of 2948	3680	a1punf5t2of.exe	95
PID 3680 wrote to memory of 2948	3680	a1punf5t2of.exe	95
PID 3680 wrote to memory of 2948	3680	a1punf5t2of.exe	95
PID 3680 wrote to memory of 2948	3680	a1punf5t2of.exe	95
PID 3680 wrote to memory of 2948	3680	a1punf5t2of.exe	95
PID 3680 wrote to memory of 2948	3680	a1punf5t2of.exe	95

C:\Users\Admin\AppData\Local\Temp\5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c.exe
"C:\Users\Admin\AppData\Local\Temp\5af0af34dd46fc2d0ed4d7e759b99207ccac6fa646bc0f9ea0657e944fa5510c.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3316
- 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:3680
- - 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:2948

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
282KB

MD5
741aaa061ad9ba8276129e8524ff0099

SHA1
12ce0fca12e666dac8f6c275803731cf4f690fe7

SHA256
a86712f983c9eaf0108c88338406a9e5a6898beb58ed53f5e9ff60473a8551a1

SHA512
34d5e239a49681eda54aa50b4b207325ddeac1b86748bb5fa265869127676bc53e2e91d9dd2e92d776cdd36fe15529e59f4dadd9f408d2e79a2c6190a64a478f

Download Submit
memory/2948-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2948-42-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/2948-39-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/2948-38-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/2948-36-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/2948-35-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/2948-34-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/2948-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2948-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3316-6-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3316-3-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3316-1-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3316-2-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3316-4-0x00000000746B2000-0x00000000746B3000-memory.dmp

Filesize
4KB

Download
memory/3316-5-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3316-0-0x00000000746B2000-0x00000000746B3000-memory.dmp

Filesize
4KB

Download
memory/3316-7-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3316-21-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3680-22-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3680-28-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3680-27-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3680-26-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3680-23-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3680-25-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3680-41-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3680-24-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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