nanocore | b17b5d23c21be8cc660187f598c46bacce0ae0d6018b1fc8bbcbe1cad472997d

General

Target

c100dbd3fc3eccf3d6ea5b3d6bd4ac50N.exe
Size

281KB
MD5

c100dbd3fc3eccf3d6ea5b3d6bd4ac50
SHA1

a824c49d213c78c985aa64f4701158dd0847e3eb
SHA256

b17b5d23c21be8cc660187f598c46bacce0ae0d6018b1fc8bbcbe1cad472997d
SHA512

4d6cb5282d3ec0cf956a140732ff3804840f1c0988bb68f8f8af50c6b3ea66d4420e6fc6b4b1d956628c37e78c8ef727d1d627c299817bb9d24cef169c800820
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkf4:boSeGUA5YZazpXUmZhZ6Sp

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

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	c100dbd3fc3eccf3d6ea5b3d6bd4ac50N.exe

Executes dropped EXE 2 IoCs

pid	Process
3068	a1punf5t2of.exe
2684	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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	c100dbd3fc3eccf3d6ea5b3d6bd4ac50N.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 3068 set thread context of 2684	3068	a1punf5t2of.exe	99

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	c100dbd3fc3eccf3d6ea5b3d6bd4ac50N.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
2684	a1punf5t2of.exe
2684	a1punf5t2of.exe
2684	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2684	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2684	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 3068	2488	c100dbd3fc3eccf3d6ea5b3d6bd4ac50N.exe	98
PID 2488 wrote to memory of 3068	2488	c100dbd3fc3eccf3d6ea5b3d6bd4ac50N.exe	98
PID 2488 wrote to memory of 3068	2488	c100dbd3fc3eccf3d6ea5b3d6bd4ac50N.exe	98
PID 3068 wrote to memory of 2684	3068	a1punf5t2of.exe	99
PID 3068 wrote to memory of 2684	3068	a1punf5t2of.exe	99
PID 3068 wrote to memory of 2684	3068	a1punf5t2of.exe	99
PID 3068 wrote to memory of 2684	3068	a1punf5t2of.exe	99
PID 3068 wrote to memory of 2684	3068	a1punf5t2of.exe	99
PID 3068 wrote to memory of 2684	3068	a1punf5t2of.exe	99
PID 3068 wrote to memory of 2684	3068	a1punf5t2of.exe	99
PID 3068 wrote to memory of 2684	3068	a1punf5t2of.exe	99

C:\Users\Admin\AppData\Local\Temp\c100dbd3fc3eccf3d6ea5b3d6bd4ac50N.exe
"C:\Users\Admin\AppData\Local\Temp\c100dbd3fc3eccf3d6ea5b3d6bd4ac50N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2488
- 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:3068
- - 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:2684

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
281KB

MD5
f335b9116e106fb776ca14060ed868bc

SHA1
a201813897ade67d0ae9be92b950af0e356da4e8

SHA256
7a972207b49cc86c852780a7e136d39ebf137f6aa6699a72092fc975254be358

SHA512
4dd1e0aba53c6710171fe358bf805701926482bffd1d7a5868b228bab46f9d96d38616791fa3dd4523f06bf2ae6d710a339730fd1dff9f2757d8607e80e3dd5e

Download Submit
memory/2488-0-0x0000000075142000-0x0000000075143000-memory.dmp

Filesize
4KB

Download
memory/2488-1-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2488-2-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2488-3-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2488-4-0x0000000075142000-0x0000000075143000-memory.dmp

Filesize
4KB

Download
memory/2488-5-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2488-6-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2488-7-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2488-22-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2684-35-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2684-38-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2684-43-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2684-40-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2684-39-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2684-37-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2684-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2684-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2684-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2684-33-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/2684-34-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/3068-23-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/3068-27-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/3068-24-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/3068-26-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/3068-25-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/3068-42-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/3068-21-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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