nanocore | 2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027

General

Target

2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027N.exe
Size

255KB
MD5

e405dde24e1f797c941c6b1033b83310
SHA1

71e027289900f056f8ffaf4acaeef0f07098c328
SHA256

2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027
SHA512

c0884d6eaacd9a0619ee1e23e059652439d7c52204ac19c7fcc042d2a2a431e253e93ff6a401abd5a3235495f84f7e2d4e58ee5e2e5ee5912e69c28312be6033
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQSr:EeGUA5YZazpXUmZhdr

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027N.exe

Executes dropped EXE 2 IoCs

pid	Process
5104	a1punf5t2of.exe
4292	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027N.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 5104 set thread context of 4292	5104	a1punf5t2of.exe	90

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	2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4292	a1punf5t2of.exe
4292	a1punf5t2of.exe
4292	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4292	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4292	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 5104	2244	2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027N.exe	82
PID 2244 wrote to memory of 5104	2244	2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027N.exe	82
PID 2244 wrote to memory of 5104	2244	2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027N.exe	82
PID 5104 wrote to memory of 4292	5104	a1punf5t2of.exe	90
PID 5104 wrote to memory of 4292	5104	a1punf5t2of.exe	90
PID 5104 wrote to memory of 4292	5104	a1punf5t2of.exe	90
PID 5104 wrote to memory of 4292	5104	a1punf5t2of.exe	90
PID 5104 wrote to memory of 4292	5104	a1punf5t2of.exe	90
PID 5104 wrote to memory of 4292	5104	a1punf5t2of.exe	90
PID 5104 wrote to memory of 4292	5104	a1punf5t2of.exe	90
PID 5104 wrote to memory of 4292	5104	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027N.exe
"C:\Users\Admin\AppData\Local\Temp\2c5ee857b57cf3c44865059655c6030f19994b85dc2a9b7be343fd15d832b027N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2244
- 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:5104
- - 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:4292

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
255KB

MD5
e4b29eb5933432f0f58cc7a1df3fdc6b

SHA1
264aed156f4a122b91033063a5dae1452072c6b3

SHA256
8c6c407ef72d641f7498dd2fe26fac992bb1545f0d1a68c14897d35dac3a117e

SHA512
8f477d625376b2ef66dc23a8199b6d5ae335707ada4292ad10360dd88064e5ddb74d58862d212f712b47d78aa85dfcc58d7a83a7f55f9182422faa2d1e5f1341

Download Submit
memory/2244-0-0x0000000074C02000-0x0000000074C03000-memory.dmp

Filesize
4KB

Download
memory/2244-1-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/2244-2-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/2244-3-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/2244-4-0x0000000074C02000-0x0000000074C03000-memory.dmp

Filesize
4KB

Download
memory/2244-5-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/2244-6-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/2244-7-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/2244-22-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4292-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4292-34-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4292-41-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4292-38-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4292-37-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4292-35-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4292-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4292-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4292-33-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/5104-21-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/5104-23-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/5104-27-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/5104-26-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/5104-25-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/5104-40-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/5104-24-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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