nanocore | 143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053

General

Target

143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053.exe
Size

256KB
MD5

4f9b163e4b6e72dbf238da52e0ccb4c4
SHA1

efc9784ba9027b5ea5b63166cb9db152c579b5f4
SHA256

143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053
SHA512

c88d862eeee30d6df4bbd7afcd53b6fba374b67ae6dd497549fbfec46a6a8039ee4602d45cea3dc0463625a663b0314afd4e1178de0ce483d23235d68ce438f0
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQS49:EeGUA5YZazpXUmZh949

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053.exe

Executes dropped EXE 2 IoCs

pid	Process
1592	a1punf5t2of.exe
4368	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053.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 1592 set thread context of 4368	1592	a1punf5t2of.exe	97

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	143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053.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
4368	a1punf5t2of.exe
4368	a1punf5t2of.exe
4368	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4368	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4368	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3092 wrote to memory of 1592	3092	143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053.exe	90
PID 3092 wrote to memory of 1592	3092	143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053.exe	90
PID 3092 wrote to memory of 1592	3092	143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053.exe	90
PID 1592 wrote to memory of 4368	1592	a1punf5t2of.exe	97
PID 1592 wrote to memory of 4368	1592	a1punf5t2of.exe	97
PID 1592 wrote to memory of 4368	1592	a1punf5t2of.exe	97
PID 1592 wrote to memory of 4368	1592	a1punf5t2of.exe	97
PID 1592 wrote to memory of 4368	1592	a1punf5t2of.exe	97
PID 1592 wrote to memory of 4368	1592	a1punf5t2of.exe	97
PID 1592 wrote to memory of 4368	1592	a1punf5t2of.exe	97
PID 1592 wrote to memory of 4368	1592	a1punf5t2of.exe	97

C:\Users\Admin\AppData\Local\Temp\143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053.exe
"C:\Users\Admin\AppData\Local\Temp\143fec8be1bae5c5662cb230cd86c9ab46b0d6391ef3fa0b8e2b815504c6d053.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3092
- 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:1592
- - 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:4368

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
256KB

MD5
fb3be0cbf1cdf59c4563c2af5b260fcb

SHA1
98b3b94c8fed64e2d3e66c689f4b625b7d7f1047

SHA256
3a0155b458b6eb9bc85b6e55e74781e2e54967f920c3ef3482763932ba2a16de

SHA512
90f4ee0e8e3a5a078325192313e77fe271172f02cdd7248751940162edc98016c110bb646cb485d0b52de14e12301a13a60f35bb9fff999ed9e3eafca8a4e0bf

Download Submit
memory/1592-38-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/1592-26-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/1592-25-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/1592-24-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/1592-23-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/1592-22-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/3092-6-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/3092-7-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/3092-0-0x00000000748E2000-0x00000000748E3000-memory.dmp

Filesize
4KB

Download
memory/3092-21-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/3092-5-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/3092-4-0x00000000748E2000-0x00000000748E3000-memory.dmp

Filesize
4KB

Download
memory/3092-3-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/3092-2-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/3092-1-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/4368-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4368-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4368-32-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/4368-33-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/4368-35-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/4368-36-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/4368-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4368-39-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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