nanocore | a983f5ec0830d0cc8e5a51d174876cbde821e582ce30fd2cc461c1d2fcd80a8f

General

Target

67ffe814a8a8a8762be897f406f34e50N.exe
Size

282KB
MD5

67ffe814a8a8a8762be897f406f34e50
SHA1

9c1282285b88bb70c2cdecccc5b68ed45e6f3a64
SHA256

a983f5ec0830d0cc8e5a51d174876cbde821e582ce30fd2cc461c1d2fcd80a8f
SHA512

90866b5550aff8f37eb73c949df7891a2b839b4aeaf5b464fe3cdeab24655ded22bd79f97af99fe9403bad6cc657ded06e58ea973955886eac6814f0ee14e840
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkflM:boSeGUA5YZazpXUmZhZ6S3

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
2836	a1punf5t2of.exe
2416	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2756	67ffe814a8a8a8762be897f406f34e50N.exe
2836	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-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	67ffe814a8a8a8762be897f406f34e50N.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 2836 set thread context of 2416	2836	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	67ffe814a8a8a8762be897f406f34e50N.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
2416	a1punf5t2of.exe
2416	a1punf5t2of.exe
2416	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2416	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2416	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2836	2756	67ffe814a8a8a8762be897f406f34e50N.exe	30
PID 2756 wrote to memory of 2836	2756	67ffe814a8a8a8762be897f406f34e50N.exe	30
PID 2756 wrote to memory of 2836	2756	67ffe814a8a8a8762be897f406f34e50N.exe	30
PID 2756 wrote to memory of 2836	2756	67ffe814a8a8a8762be897f406f34e50N.exe	30
PID 2756 wrote to memory of 2836	2756	67ffe814a8a8a8762be897f406f34e50N.exe	30
PID 2756 wrote to memory of 2836	2756	67ffe814a8a8a8762be897f406f34e50N.exe	30
PID 2756 wrote to memory of 2836	2756	67ffe814a8a8a8762be897f406f34e50N.exe	30
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32
PID 2836 wrote to memory of 2416	2836	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\67ffe814a8a8a8762be897f406f34e50N.exe
"C:\Users\Admin\AppData\Local\Temp\67ffe814a8a8a8762be897f406f34e50N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2756
- 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:2836
- - 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:2416

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
f65c889fa427e87c919bb51e55a19899

SHA1
6a116c3da5211aaad81e0538b709ad3eb26eeb7a

SHA256
f0d64c18159c0e456bc07aa3862dc18d868dd03af4175a4ef0742259fbea1473

SHA512
6c9ffd33f4c49a9b18f8f9a103779a9b395f3d50cbbea5ff5871828535b2b6550a4ce54fdd5408a2d9697bc47a5f7f1655b9422d140a280875dbe14e0faed9fd

Download Submit
memory/2416-39-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2416-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2416-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2416-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2416-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2416-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2416-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2416-37-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2756-5-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2756-15-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2756-6-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2756-0-0x0000000074381000-0x0000000074382000-memory.dmp

Filesize
4KB

Download
memory/2756-4-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2756-3-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2756-2-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2756-1-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2836-17-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2836-18-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2836-19-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2836-16-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/2836-41-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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