nanocore | 304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7

General

Target

304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7.exe
Size

256KB
MD5

e1f30f46b8fece3fbb039f7115c3ad46
SHA1

80166862e68b7173083d0fb6d8e23e830a6a2211
SHA256

304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7
SHA512

67b6b89e91abf967257c388f8f867227df89e6d2cc6ff0a857bc35c2851372750f4132da61f0fb3a097763df7e4e5a44fe44337313234b66b7a28d9a654fc82f
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ41:EeGUA5YZazpXUmZhP1

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7.exe

Executes dropped EXE 2 IoCs

pid	Process
1652	a1punf5t2of.exe
4800	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7.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 1652 set thread context of 4800	1652	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	304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7.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
4800	a1punf5t2of.exe
4800	a1punf5t2of.exe
4800	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4800	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4800	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 964 wrote to memory of 1652	964	304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7.exe	87
PID 964 wrote to memory of 1652	964	304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7.exe	87
PID 964 wrote to memory of 1652	964	304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7.exe	87
PID 1652 wrote to memory of 4800	1652	a1punf5t2of.exe	90
PID 1652 wrote to memory of 4800	1652	a1punf5t2of.exe	90
PID 1652 wrote to memory of 4800	1652	a1punf5t2of.exe	90
PID 1652 wrote to memory of 4800	1652	a1punf5t2of.exe	90
PID 1652 wrote to memory of 4800	1652	a1punf5t2of.exe	90
PID 1652 wrote to memory of 4800	1652	a1punf5t2of.exe	90
PID 1652 wrote to memory of 4800	1652	a1punf5t2of.exe	90
PID 1652 wrote to memory of 4800	1652	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7.exe
"C:\Users\Admin\AppData\Local\Temp\304769302bae35cc513d912fc75fac79bdabec0c3aa80be9d96c1cc71fa6f9a7.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:964
- 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:1652
- - 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:4800

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
256KB

MD5
041e603b3e47f11ea05526d9c0157a3f

SHA1
28471ea93ab188c659db2d32156a43905d33ae9f

SHA256
6956d7b38e2dd7e72c1333664670573bbfdae093202e614d2d9c111921961a17

SHA512
3fd485aad0c7f819ad2cdbb188c683bc8e9d01f60c6b96692c32775a0632035db67eb2910cd9d55346184e8f040a4ac2bf88ad9ee7bb89ebaaf5a8ad83952901

Download Submit
memory/964-22-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/964-0-0x0000000074FE2000-0x0000000074FE3000-memory.dmp

Filesize
4KB

Download
memory/964-1-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/964-4-0x0000000074FE2000-0x0000000074FE3000-memory.dmp

Filesize
4KB

Download
memory/964-5-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/964-6-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/964-7-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/964-2-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/964-3-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1652-27-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1652-24-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1652-23-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1652-21-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1652-26-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1652-25-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1652-40-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/4800-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4800-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4800-33-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/4800-35-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/4800-34-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/4800-37-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/4800-38-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/4800-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4800-41-0x0000000074FE0000-0x0000000075591000-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