nanocore | 5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9

General

Target

5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe
Size

413KB
MD5

db5951f034577f923a0736f805d51a16
SHA1

62f4f0e7a56322cc0f25b6c9554a3b9ded04b762
SHA256

5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9
SHA512

8a7146bc2c107971bca26a9a5c794133287a9f160dbf47b613b8ed9105c5331836e935a4c62fc13e9276e48839b9194384b5aeae3bec0b8017a9283dd41d2923
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUa:ITNYrnE3bm/CiejewY5vB

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

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe

Executes dropped EXE 1 IoCs

pid	Process
2864	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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.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 2864 set thread context of 4796	2864	ximo2ubzn1i.exe	83

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	ximo2ubzn1i.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4796	regasm.exe
4796	regasm.exe
4796	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4796	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4796	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1524 wrote to memory of 2864	1524	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe	82
PID 1524 wrote to memory of 2864	1524	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe	82
PID 1524 wrote to memory of 2864	1524	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe	82
PID 2864 wrote to memory of 4796	2864	ximo2ubzn1i.exe	83
PID 2864 wrote to memory of 4796	2864	ximo2ubzn1i.exe	83
PID 2864 wrote to memory of 4796	2864	ximo2ubzn1i.exe	83
PID 2864 wrote to memory of 4796	2864	ximo2ubzn1i.exe	83
PID 2864 wrote to memory of 4796	2864	ximo2ubzn1i.exe	83
PID 2864 wrote to memory of 4796	2864	ximo2ubzn1i.exe	83
PID 2864 wrote to memory of 4796	2864	ximo2ubzn1i.exe	83
PID 2864 wrote to memory of 4796	2864	ximo2ubzn1i.exe	83

C:\Users\Admin\AppData\Local\Temp\5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe
"C:\Users\Admin\AppData\Local\Temp\5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1524
- 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:2864
- - 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:4796

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
413KB

MD5
02af3ea965d92f0e5a064e29839e72ff

SHA1
81f7ce6d50b2c6250a16a02cae56a9155d898403

SHA256
4e22898594eb425f8e16b3e575c6ad731362153fb95457f8d9ff669276dac901

SHA512
a90cce748cad389bd877d34291aeefe7a46b6d273a5caabd21a31542d217d9fa17d36a3a6bf886fc068e2fd4db4a2a82a1501ff457ef04aa4108c5459e955a08

Download Submit
memory/1524-20-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/1524-1-0x0000000000910000-0x000000000097E000-memory.dmp

Filesize
440KB

Download
memory/1524-2-0x0000000005960000-0x0000000005F04000-memory.dmp

Filesize
5.6MB

Download
memory/1524-3-0x00000000053B0000-0x0000000005442000-memory.dmp

Filesize
584KB

Download
memory/1524-4-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/1524-5-0x0000000005370000-0x000000000537A000-memory.dmp

Filesize
40KB

Download
memory/1524-6-0x0000000005720000-0x000000000575C000-memory.dmp

Filesize
240KB

Download
memory/1524-0-0x000000007516E000-0x000000007516F000-memory.dmp

Filesize
4KB

Download
memory/2864-22-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/2864-21-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/2864-33-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/2864-35-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/4796-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4796-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4796-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4796-27-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/4796-28-0x0000000005080000-0x000000000511C000-memory.dmp

Filesize
624KB

Download
memory/4796-30-0x0000000005550000-0x000000000555A000-memory.dmp

Filesize
40KB

Download
memory/4796-31-0x0000000005560000-0x000000000557E000-memory.dmp

Filesize
120KB

Download
memory/4796-32-0x0000000005F40000-0x0000000005F4A000-memory.dmp

Filesize
40KB

Download
memory/4796-36-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads