nanocore | b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c

General

Target

b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe
Size

415KB
MD5

9a1bc53fb599e522844243dcef5f27e8
SHA1

25eb2abab65a2fd76f7cd420214f0789edb83bfd
SHA256

b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c
SHA512

bde01fea16c83402e9e1f02b4d38a7e95eee6aa5a67a5f64301af971c9d2ed2b699e92cb9a2ee1489ab5d3861a0de4319aff4eb96abeb36fb34d6ffa8ed093a8
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUwK:ITNYrnE3bm/CiejewY5vu

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

Executes dropped EXE 1 IoCs

pid	Process
2976	ximo2ubzn1i.exe

Loads dropped DLL 1 IoCs

pid	Process
2936	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.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 2976 set thread context of 2184	2976	ximo2ubzn1i.exe	32

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	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ximo2ubzn1i.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2184	regasm.exe
2184	regasm.exe
2184	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2184	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	regasm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 2976	2936	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe	30
PID 2936 wrote to memory of 2976	2936	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe	30
PID 2936 wrote to memory of 2976	2936	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe	30
PID 2936 wrote to memory of 2976	2936	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe	30
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32
PID 2976 wrote to memory of 2184	2976	ximo2ubzn1i.exe	32

C:\Users\Admin\AppData\Local\Temp\b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe
"C:\Users\Admin\AppData\Local\Temp\b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- 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:2976
- - 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:2184

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

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

\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

Filesize
415KB

MD5
92be121d149ca74b0aa7963e8c17b524

SHA1
c0b36b43f08c9e3b94dccaed9f172f7d2a839a7c

SHA256
6673d7abada95f01ab1334fe21b06b0f63af922ee9682b95a65880e40134d335

SHA512
049c9c123d85af7bbd4e6fd43ca6309c7c53d55fb72d5c0860c4b0de455883eed3a805ca1fd2bffc70e630f63cb4ff6bee2c38381b19ecf6afe4f928e426f83d

Download Submit
memory/2184-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-31-0x0000000000750000-0x000000000076E000-memory.dmp

Filesize
120KB

Download
memory/2184-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2184-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-32-0x0000000000770000-0x000000000077A000-memory.dmp

Filesize
40KB

Download
memory/2184-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-30-0x00000000004B0000-0x00000000004BA000-memory.dmp

Filesize
40KB

Download
memory/2184-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2936-15-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download
memory/2936-1-0x0000000000D70000-0x0000000000DDE000-memory.dmp

Filesize
440KB

Download
memory/2936-3-0x0000000000CB0000-0x0000000000CEC000-memory.dmp

Filesize
240KB

Download
memory/2936-0-0x00000000740BE000-0x00000000740BF000-memory.dmp

Filesize
4KB

Download
memory/2936-2-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download
memory/2976-14-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download
memory/2976-13-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download
memory/2976-12-0x0000000000DF0000-0x0000000000E5E000-memory.dmp

Filesize
440KB

Download
memory/2976-33-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download
memory/2976-34-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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