nanocore | 8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641

General

Target

8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641N.exe
Size

279KB
MD5

b1f2bab80b17fce89112c82286245040
SHA1

3ab5ddf5a4632f41134700c7b6eb3944ebbb20d9
SHA256

8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641
SHA512

b8bb023d0ca28fa0c543d828534cceae262447b0ce157f95dc9fa93bfd7623eeb7b19391c875a6821e3dcd6a495029fe71631a9977bd5f9878f23510f4ebfcc6
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fc:boSeGUA5YZazpXUmZhZ6k

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641N.exe

Executes dropped EXE 2 IoCs

pid	Process
1884	a1punf5t2of.exe
3124	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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641N.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 1884 set thread context of 3124	1884	a1punf5t2of.exe	92

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	8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641N.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
3124	a1punf5t2of.exe
3124	a1punf5t2of.exe
3124	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3124	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3124	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4764 wrote to memory of 1884	4764	8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641N.exe	88
PID 4764 wrote to memory of 1884	4764	8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641N.exe	88
PID 4764 wrote to memory of 1884	4764	8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641N.exe	88
PID 1884 wrote to memory of 3124	1884	a1punf5t2of.exe	92
PID 1884 wrote to memory of 3124	1884	a1punf5t2of.exe	92
PID 1884 wrote to memory of 3124	1884	a1punf5t2of.exe	92
PID 1884 wrote to memory of 3124	1884	a1punf5t2of.exe	92
PID 1884 wrote to memory of 3124	1884	a1punf5t2of.exe	92
PID 1884 wrote to memory of 3124	1884	a1punf5t2of.exe	92
PID 1884 wrote to memory of 3124	1884	a1punf5t2of.exe	92
PID 1884 wrote to memory of 3124	1884	a1punf5t2of.exe	92

C:\Users\Admin\AppData\Local\Temp\8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641N.exe
"C:\Users\Admin\AppData\Local\Temp\8a2ba6c8f4dfb7891261e7a81616c11f70a8ee26df40bfb52b66a6e762b90641N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4764
- 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:1884
- - 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:3124

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
b8e1dc126185a89ed2b02e471adb4e7f

SHA1
eb205752f78a1d625c55f545b35e1a0f8e9cc181

SHA256
6c7c3156c5e33e9be7f42f70442daa87418d3732670257aebe3bdd139f4f3055

SHA512
cc4d396aa7c83ddeda62770158efcf6098f83dd822d179e2a5a732c9f48be6f8c53a5ee7818cf88bd2256b17ca2dbe049e97790519933d361500c95c978bf053

Download Submit
memory/1884-40-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1884-27-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1884-26-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1884-25-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1884-24-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1884-23-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/1884-22-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/3124-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3124-35-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/3124-41-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/3124-38-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/3124-37-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/3124-34-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/3124-33-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/3124-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3124-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4764-2-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-0-0x0000000074C22000-0x0000000074C23000-memory.dmp

Filesize
4KB

Download
memory/4764-3-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-4-0x0000000074C22000-0x0000000074C23000-memory.dmp

Filesize
4KB

Download
memory/4764-21-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-5-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-6-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-1-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download
memory/4764-7-0x0000000074C20000-0x00000000751D1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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