nanocore | c3a0cddf3cb0389fdd9c8029f3dc4638f511b93950c56fb811310987b51ee901

General

Target

bb936870fe8af1aefa1eec876801cae0N.exe
Size

281KB
MD5

bb936870fe8af1aefa1eec876801cae0
SHA1

7cb2ae9a76cadb344075b19087ed27c9ef983b73
SHA256

c3a0cddf3cb0389fdd9c8029f3dc4638f511b93950c56fb811310987b51ee901
SHA512

ff863e20775f66dfacc4e2e59b924bdf5482c89a763c9f6674ed502ff9214e9aebc53e43d3ce1237cbe5fe01874b9e7b8c51552b67cbacae87c755d929da8974
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfe:boSeGUA5YZazpXUmZhZ6S7

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

Executes dropped EXE 2 IoCs

pid	Process
2928	a1punf5t2of.exe
2560	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2360	bb936870fe8af1aefa1eec876801cae0N.exe
2928	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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	bb936870fe8af1aefa1eec876801cae0N.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 2928 set thread context of 2560	2928	a1punf5t2of.exe	32

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	bb936870fe8af1aefa1eec876801cae0N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2560	a1punf5t2of.exe
2560	a1punf5t2of.exe
2560	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2560	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2560	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2928	2360	bb936870fe8af1aefa1eec876801cae0N.exe	31
PID 2360 wrote to memory of 2928	2360	bb936870fe8af1aefa1eec876801cae0N.exe	31
PID 2360 wrote to memory of 2928	2360	bb936870fe8af1aefa1eec876801cae0N.exe	31
PID 2360 wrote to memory of 2928	2360	bb936870fe8af1aefa1eec876801cae0N.exe	31
PID 2360 wrote to memory of 2928	2360	bb936870fe8af1aefa1eec876801cae0N.exe	31
PID 2360 wrote to memory of 2928	2360	bb936870fe8af1aefa1eec876801cae0N.exe	31
PID 2360 wrote to memory of 2928	2360	bb936870fe8af1aefa1eec876801cae0N.exe	31
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32
PID 2928 wrote to memory of 2560	2928	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\bb936870fe8af1aefa1eec876801cae0N.exe
"C:\Users\Admin\AppData\Local\Temp\bb936870fe8af1aefa1eec876801cae0N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2928
- - 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:2560

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

System Information Discovery

2

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

\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
282KB

MD5
923a44d8b877decc931be3a433dd45fc

SHA1
3bcd27f16fe93d236ad35df3b4012f10547d8f96

SHA256
f02e882ad1ca5f460b040135556062dc239061035ae2c6aa29e328ce0ec85c1e

SHA512
bf3d37173b73059d1ca26ca7872b19207859920fa77125932fd739badfa7cc6433365fd233dc9a2f8730c29ed286dbc4e7934b7cd3ffe0bd72d468e193e09944

Download Submit
memory/2360-0-0x0000000074F21000-0x0000000074F22000-memory.dmp

Filesize
4KB

Download
memory/2360-2-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-1-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-3-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-12-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2560-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2560-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2560-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2560-34-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2560-32-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2560-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2560-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2560-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2928-13-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2928-16-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2928-15-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2928-14-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2928-36-0x0000000074F20000-0x00000000754CB000-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