nanocore | 783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e

General

Target

783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.exe
Size

255KB
MD5

bdc46f6e0e23991a9a7bfe9f68db2077
SHA1

47b1322dbf72428dbb7f7bce44ef3554e7e87e39
SHA256

783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e
SHA512

9ef617fe0cbdafc9a75a6e49436bc1cecb6db5d359d5556a02a63428c6c8e13d51137c71edc41b116eaabf8912387f0f61126fcccce8ce58d45a1edcc38bc5a7
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQSM:EeGUA5YZazpXUmZhdM

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sysupdate24.ddns.net:45400

Mutex

ae82ab7f-db07-49ee-9d2b-76075d76f37f

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
buffer_size
65535
build_time
2020-04-24T17:41:53.492468936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
45400
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
ae82ab7f-db07-49ee-9d2b-76075d76f37f
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
sysupdate24.ddns.net
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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.exe

Executes dropped EXE 2 IoCs

pid	Process
1028	a1punf5t2of.exe
2788	a1punf5t2of.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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.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	a1punf5t2of.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1028 set thread context of 2788	1028	a1punf5t2of.exe	90

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	783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2788	a1punf5t2of.exe
2788	a1punf5t2of.exe
2788	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2788	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4504 wrote to memory of 1028	4504	783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.exe	87
PID 4504 wrote to memory of 1028	4504	783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.exe	87
PID 4504 wrote to memory of 1028	4504	783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.exe	87
PID 1028 wrote to memory of 2788	1028	a1punf5t2of.exe	90
PID 1028 wrote to memory of 2788	1028	a1punf5t2of.exe	90
PID 1028 wrote to memory of 2788	1028	a1punf5t2of.exe	90
PID 1028 wrote to memory of 2788	1028	a1punf5t2of.exe	90
PID 1028 wrote to memory of 2788	1028	a1punf5t2of.exe	90
PID 1028 wrote to memory of 2788	1028	a1punf5t2of.exe	90
PID 1028 wrote to memory of 2788	1028	a1punf5t2of.exe	90
PID 1028 wrote to memory of 2788	1028	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.exe
"C:\Users\Admin\AppData\Local\Temp\783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4504
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1028
- - C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
    "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
    3⤵
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2788

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\b1b2dqljdx3\a1punf5t2of.exe

Filesize
255KB

MD5
61f6cf9acab27db373a88b3f83a63da1

SHA1
7894923b36f14f2cd075d49b8b6743d6a5cae47f

SHA256
4db6f9296ab34ca6f2bd8a17a14f239f8f89e81e7a8d460ad95ee04fa35c20a5

SHA512
5b4d5c55ed5796c84655264dd53aa868b5942665b78131a4664b079659075238df987eb304a1a2317339581962aeda5d9c2f4efa016d6f552757d7fae3e9e9f8

Download Submit
memory/1028-40-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/1028-27-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/1028-26-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/1028-24-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/1028-25-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/1028-23-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/1028-21-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2788-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2788-34-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2788-41-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2788-38-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2788-37-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2788-35-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2788-33-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2788-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2788-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4504-2-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4504-0-0x0000000075352000-0x0000000075353000-memory.dmp

Filesize
4KB

Download
memory/4504-3-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4504-4-0x0000000075352000-0x0000000075353000-memory.dmp

Filesize
4KB

Download
memory/4504-22-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4504-5-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4504-6-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4504-1-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4504-7-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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