nanocore | 71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecf

General

Target

71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
Size

1.1MB
MD5

18023780aeadf33caf1db6d0f3c3e360
SHA1

886baa0522d4ce3dc270fa3be4514b4a1a320264
SHA256

71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecf
SHA512

64499a3d73234c8bf2c47b4fabfc47301d763149c16938f8255e0e0c3270e7283642c9ed9de410dfcd0403750e5720ae73f16945c508a446a88b0deb3a13f33e
SSDEEP

24576:1AHnh+eWsN3skA4RV1Hom2KXMmHahZB/Nep86f3YAm4W5N:kh+ZkldoPK8Yahb/NKKAm9N

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

160.202.163.242:6765

Mutex

c0a66e70-712e-4e13-85d0-5362a812b1a5

Attributes

activate_away_mode
true
backup_connection_host
160.202.163.242
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-02-24T16:03:16.653191036Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
6765
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
c0a66e70-712e-4e13-85d0-5362a812b1a5
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
160.202.163.242
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VsGraphicsDesktopEngine.lnk	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAS Monitor = "C:\\Program Files (x86)\\NAS Monitor\\nasmon.exe"	RegAsm.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	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 388 set thread context of 4436	388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe	91

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\NAS Monitor\nasmon.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\NAS Monitor\nasmon.exe	RegAsm.exe

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 4 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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3192	schtasks.exe
2396	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
4436	RegAsm.exe
4436	RegAsm.exe
4436	RegAsm.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4436	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4436	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 388 wrote to memory of 4436	388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe	91
PID 388 wrote to memory of 4436	388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe	91
PID 388 wrote to memory of 4436	388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe	91
PID 388 wrote to memory of 4436	388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe	91
PID 388 wrote to memory of 4436	388	71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe	91
PID 4436 wrote to memory of 3192	4436	RegAsm.exe	93
PID 4436 wrote to memory of 3192	4436	RegAsm.exe	93
PID 4436 wrote to memory of 3192	4436	RegAsm.exe	93
PID 4436 wrote to memory of 2396	4436	RegAsm.exe	95
PID 4436 wrote to memory of 2396	4436	RegAsm.exe	95
PID 4436 wrote to memory of 2396	4436	RegAsm.exe	95

C:\Users\Admin\AppData\Local\Temp\71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe
"C:\Users\Admin\AppData\Local\Temp\71937841a5892cf7a012aa8b315d62fe0e650f85ca906bcfb32c581bcdd76ecfN.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:388
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4436
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "NAS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1DB4.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3192
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "NAS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1DF4.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

C:\Users\Admin\AppData\Local\Temp\tmp1DB4.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1DF4.tmp

Filesize
1KB

MD5
3144131f2fe1c35ad2aafff167a26f59

SHA1
959879de38aed11bc08b7725500d2c8c953e80bf

SHA256
d20aeda9cadd332268afc89cbee76f297b00f061bf69a2f558a8d7657e4c41d7

SHA512
27a07c8f953cc4fde9ec348d3f5c4621ab56ff281b778bc7ac95dd808d5f0eea6969c5e4662efc00a6416c8bcf4d8e3892be5c99e603e36f8aa49d2a957206fb

Download Submit
memory/388-3-0x00000000010A0000-0x00000000010A1000-memory.dmp

Filesize
4KB

Download
memory/4436-4-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4436-9-0x0000000073392000-0x0000000073393000-memory.dmp

Filesize
4KB

Download
memory/4436-10-0x0000000073390000-0x0000000073941000-memory.dmp

Filesize
5.7MB

Download
memory/4436-11-0x0000000073390000-0x0000000073941000-memory.dmp

Filesize
5.7MB

Download
memory/4436-19-0x0000000073392000-0x0000000073393000-memory.dmp

Filesize
4KB

Download
memory/4436-20-0x0000000073390000-0x0000000073941000-memory.dmp

Filesize
5.7MB

Download
memory/4436-21-0x0000000073390000-0x0000000073941000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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