nanocore | a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313c

General

Target

a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313cN.exe
Size

416KB
MD5

8a7e3af869e419b7120aad8086528180
SHA1

43b86e2dbc462e3a0d4f9e21f9accd504ea65650
SHA256

a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313c
SHA512

c46436ee506a6ee98350a543d6fa6c98bfb7e3910f16a85bfe102f21aacd17d1184372a958297d47baedb39a84ace6e562518123f6d414c212cbbfea08665eb1
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUM:ITNYrnE3bm/CiejewY5vR

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313cN.exe

Executes dropped EXE 1 IoCs

pid	Process
3068	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313cN.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 3068 set thread context of 4720	3068	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	a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313cN.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
4720	regasm.exe
4720	regasm.exe
4720	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4720	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4720	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 452 wrote to memory of 3068	452	a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313cN.exe	82
PID 452 wrote to memory of 3068	452	a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313cN.exe	82
PID 452 wrote to memory of 3068	452	a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313cN.exe	82
PID 3068 wrote to memory of 4720	3068	ximo2ubzn1i.exe	83
PID 3068 wrote to memory of 4720	3068	ximo2ubzn1i.exe	83
PID 3068 wrote to memory of 4720	3068	ximo2ubzn1i.exe	83
PID 3068 wrote to memory of 4720	3068	ximo2ubzn1i.exe	83
PID 3068 wrote to memory of 4720	3068	ximo2ubzn1i.exe	83
PID 3068 wrote to memory of 4720	3068	ximo2ubzn1i.exe	83
PID 3068 wrote to memory of 4720	3068	ximo2ubzn1i.exe	83
PID 3068 wrote to memory of 4720	3068	ximo2ubzn1i.exe	83

C:\Users\Admin\AppData\Local\Temp\a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313cN.exe
"C:\Users\Admin\AppData\Local\Temp\a4103128ccddadfc620eaf9d6c7454c590ef0cded61e46ae2bcdfd8ffc2e313cN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:452
- 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:3068
- - 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:4720

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
76dd959662e8560e1ac356ade3f2f9f6

SHA1
7b4b2b4154b52c80d9b60d8ab43762e4bdfbb48c

SHA256
0efd04feb015ccf485899bb207e4b186540c914ba4a1cc2bca4c73c5fb40d949

SHA512
99cde97fa010d0411b183ca9090b7551a5fe2428d5d09e86a6abd3fe56615450476875a4ff62f96070fb17f861ede1ca0f6e15a1804bbb91b76e937e266a940d

Download Submit
memory/452-21-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/452-1-0x0000000000620000-0x000000000068E000-memory.dmp

Filesize
440KB

Download
memory/452-2-0x0000000005600000-0x0000000005BA4000-memory.dmp

Filesize
5.6MB

Download
memory/452-3-0x00000000050F0000-0x0000000005182000-memory.dmp

Filesize
584KB

Download
memory/452-4-0x0000000005090000-0x000000000509A000-memory.dmp

Filesize
40KB

Download
memory/452-5-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/452-6-0x0000000005560000-0x000000000559C000-memory.dmp

Filesize
240KB

Download
memory/452-0-0x00000000752EE000-0x00000000752EF000-memory.dmp

Filesize
4KB

Download
memory/3068-22-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/3068-20-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/3068-33-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/3068-35-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/4720-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4720-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4720-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4720-27-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/4720-28-0x0000000005840000-0x00000000058DC000-memory.dmp

Filesize
624KB

Download
memory/4720-30-0x0000000005BA0000-0x0000000005BAA000-memory.dmp

Filesize
40KB

Download
memory/4720-31-0x0000000005BB0000-0x0000000005BCE000-memory.dmp

Filesize
120KB

Download
memory/4720-32-0x00000000066D0000-0x00000000066DA000-memory.dmp

Filesize
40KB

Download
memory/4720-36-0x00000000752E0000-0x0000000075A90000-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