nanocore | 66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cd

General

Target

66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cdN.exe
Size

278KB
MD5

635ca9a4c9372a7793128655cf4952c0
SHA1

87e923f2f72d0a1b33f1984ec703474efe290fa8
SHA256

66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cd
SHA512

3d2c23e123b5b392a62ce35bffb1fa41484e1c1163bd2401cf2fa1a707958699274aa80ceac32c667721abc0d6a94504f1f6e11e889db1af86f1c765884843a7
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fj:boSeGUA5YZazpXUmZhZ67

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

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cdN.exe

Executes dropped EXE 2 IoCs

pid	Process
208	a1punf5t2of.exe
4576	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-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cdN.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 208 set thread context of 4576	208	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	66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cdN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4576	a1punf5t2of.exe
4576	a1punf5t2of.exe
4576	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4576	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4576	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 208	4376	66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cdN.exe	89
PID 4376 wrote to memory of 208	4376	66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cdN.exe	89
PID 4376 wrote to memory of 208	4376	66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cdN.exe	89
PID 208 wrote to memory of 4576	208	a1punf5t2of.exe	90
PID 208 wrote to memory of 4576	208	a1punf5t2of.exe	90
PID 208 wrote to memory of 4576	208	a1punf5t2of.exe	90
PID 208 wrote to memory of 4576	208	a1punf5t2of.exe	90
PID 208 wrote to memory of 4576	208	a1punf5t2of.exe	90
PID 208 wrote to memory of 4576	208	a1punf5t2of.exe	90
PID 208 wrote to memory of 4576	208	a1punf5t2of.exe	90
PID 208 wrote to memory of 4576	208	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cdN.exe
"C:\Users\Admin\AppData\Local\Temp\66ea2fdefecc502e674cae5dbf85ebbbc85d0da2c567e3816561b9a73c6659cdN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4376
- 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:208
- - 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:4576

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
278KB

MD5
d218ffaad2fbfc91f04086982482022b

SHA1
4d39a79dc2afaf5b6ad72af77aee639c05597042

SHA256
fd3e03550704bb72bcfb13018eb5cafef25d05a2e5a708124b95e8f8b2463eae

SHA512
29dd4317d1f043cd17a5b8ae2f0f258384118e502bc89c9f85bba9a1db875d9738f83e01440f22fb59101bd35ccbefab543c405da1e669335ceffa664388c87c

Download Submit
memory/208-42-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/208-27-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/208-26-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/208-25-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/208-24-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/208-23-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/208-22-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4376-7-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4376-0-0x0000000074912000-0x0000000074913000-memory.dmp

Filesize
4KB

Download
memory/4376-6-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4376-21-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4376-5-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4376-4-0x0000000074912000-0x0000000074913000-memory.dmp

Filesize
4KB

Download
memory/4376-3-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4376-2-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4376-1-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4576-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4576-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4576-33-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4576-35-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4576-34-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4576-37-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4576-38-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4576-39-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4576-40-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4576-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4576-43-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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