nanocore | 638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15

General

Target

638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15N.exe
Size

416KB
MD5

3cb4b1e1ee58fa4c042ee127b398fa90
SHA1

fc10e24ebf9f0a6cc6e9b3947a4a0822286e84bd
SHA256

638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15
SHA512

cb9cf10b2bf43b411511de9351cacfa60a16107cf77301a59a4824131026353976dacf9d14ea015aea061e4e9e0a93f7e9a46b5532e3f97f5751a8e604124610
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7S:ITNYrnE3bm/CiejewY5vh

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

[email protected]:46218

178.32.224.116:46218

Mutex

4af74541-e3f1-469c-8af7-efe4071b81cf

Attributes

activate_away_mode
false
backup_connection_host
178.32.224.116
backup_dns_server
buffer_size
65535
build_time
2018-07-28T12:59:38.488799236Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
46218
default_group
tourex
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
4af74541-e3f1-469c-8af7-efe4071b81cf
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
[email protected]
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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15N.exe

Executes dropped EXE 1 IoCs

pid	Process
3204	ximo2ubzn1i.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15N.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 3204 set thread context of 3384	3204	ximo2ubzn1i.exe	87

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	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ximo2ubzn1i.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3384	regasm.exe
3384	regasm.exe
3384	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3384	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3384	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4072 wrote to memory of 3204	4072	638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15N.exe	84
PID 4072 wrote to memory of 3204	4072	638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15N.exe	84
PID 4072 wrote to memory of 3204	4072	638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15N.exe	84
PID 3204 wrote to memory of 3384	3204	ximo2ubzn1i.exe	87
PID 3204 wrote to memory of 3384	3204	ximo2ubzn1i.exe	87
PID 3204 wrote to memory of 3384	3204	ximo2ubzn1i.exe	87
PID 3204 wrote to memory of 3384	3204	ximo2ubzn1i.exe	87
PID 3204 wrote to memory of 3384	3204	ximo2ubzn1i.exe	87
PID 3204 wrote to memory of 3384	3204	ximo2ubzn1i.exe	87
PID 3204 wrote to memory of 3384	3204	ximo2ubzn1i.exe	87
PID 3204 wrote to memory of 3384	3204	ximo2ubzn1i.exe	87

C:\Users\Admin\AppData\Local\Temp\638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15N.exe
"C:\Users\Admin\AppData\Local\Temp\638fea62afaa7a650651d22ad0a58f71838299790409208adc591b0a6f7eaf15N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4072
- C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
  "C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3204
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
    3⤵
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3384

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\c5e4gxfvd4v\ximo2ubzn1i.exe

Filesize
416KB

MD5
4ac6ecb4ae3093681ee797b0d19d22c2

SHA1
77fce15e8e19f4aa480736a3cc3dd763cb0c513e

SHA256
5ca27b900b7bd4e16b4996f68370479b7d0512014686ecb27ddb024936357807

SHA512
1ec7c7fbe2849e0db645ee0dba28445d8df7337aad44ca37410473dfb7ecaff543fa81edae28f4ce85369364fb6f808182be673c898b1fd410c7bd8e8229a55e

Download Submit
memory/3204-35-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3204-33-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3204-22-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3204-20-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3384-28-0x00000000059C0000-0x0000000005A5C000-memory.dmp

Filesize
624KB

Download
memory/3384-32-0x0000000006810000-0x000000000681A000-memory.dmp

Filesize
40KB

Download
memory/3384-36-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3384-31-0x0000000005BE0000-0x0000000005BFE000-memory.dmp

Filesize
120KB

Download
memory/3384-30-0x0000000005BD0000-0x0000000005BDA000-memory.dmp

Filesize
40KB

Download
memory/3384-27-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3384-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3384-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3384-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4072-3-0x00000000051B0000-0x0000000005242000-memory.dmp

Filesize
584KB

Download
memory/4072-0-0x0000000074BEE000-0x0000000074BEF000-memory.dmp

Filesize
4KB

Download
memory/4072-21-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/4072-4-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/4072-6-0x0000000005560000-0x000000000559C000-memory.dmp

Filesize
240KB

Download
memory/4072-2-0x0000000005830000-0x0000000005DD4000-memory.dmp

Filesize
5.6MB

Download
memory/4072-1-0x0000000000890000-0x00000000008FE000-memory.dmp

Filesize
440KB

Download
memory/4072-5-0x0000000005250000-0x000000000525A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads