nanocore | bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67

General

Target

bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67N.exe
Size

255KB
MD5

656ab127d78519e09dc5c5ac3fcfca60
SHA1

ae74b886a414c0168f637b48a762822e6029270f
SHA256

bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67
SHA512

f97fd196a0cdf34359f53dbb4efa9c89bd6f595df4a46cbc978a05d75f84b1cbe06a10c9961709573f2eb90d28c4c50fb60582ce22991a824a0b949d53dc8999
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQS4q:EeGUA5YZazpXUmZh94q

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67N.exe

Executes dropped EXE 2 IoCs

pid	Process
2108	a1punf5t2of.exe
3984	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67N.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 2108 set thread context of 3984	2108	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	bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67N.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
3984	a1punf5t2of.exe
3984	a1punf5t2of.exe
3984	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3984	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3984	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5092 wrote to memory of 2108	5092	bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67N.exe	89
PID 5092 wrote to memory of 2108	5092	bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67N.exe	89
PID 5092 wrote to memory of 2108	5092	bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67N.exe	89
PID 2108 wrote to memory of 3984	2108	a1punf5t2of.exe	90
PID 2108 wrote to memory of 3984	2108	a1punf5t2of.exe	90
PID 2108 wrote to memory of 3984	2108	a1punf5t2of.exe	90
PID 2108 wrote to memory of 3984	2108	a1punf5t2of.exe	90
PID 2108 wrote to memory of 3984	2108	a1punf5t2of.exe	90
PID 2108 wrote to memory of 3984	2108	a1punf5t2of.exe	90
PID 2108 wrote to memory of 3984	2108	a1punf5t2of.exe	90
PID 2108 wrote to memory of 3984	2108	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67N.exe
"C:\Users\Admin\AppData\Local\Temp\bd15554bea2ace2d3758ce88c991d0833850ae996e91e6a8774afc1ad5a4be67N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5092
- 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:2108
- - 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:3984

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
d8f2c5d9cbd0d285f46e64a7db8b46ba

SHA1
b1f9423c6544cac329f8c58f9dfda1339bd3b7a3

SHA256
9d9bc0cbc9e5711f2ad536b01f1efbe182e6fe803e76a699bb5f0106b9febf89

SHA512
6f37f5719d2af09a86a00115408dc79770a4beaecca4d2589769dfb0dd6cf750210b56eed8443e932731f65b415713f4d2bbd965ff7e36a97b2dfbd6a3c5e88a

Download Submit
memory/2108-41-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/2108-27-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/2108-26-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/2108-25-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/2108-22-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/2108-24-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/2108-21-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/3984-34-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/3984-33-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/3984-43-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/3984-42-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/3984-39-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/3984-38-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/3984-37-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/3984-35-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/3984-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3984-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3984-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5092-4-0x0000000074E62000-0x0000000074E63000-memory.dmp

Filesize
4KB

Download
memory/5092-2-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/5092-0-0x0000000074E62000-0x0000000074E63000-memory.dmp

Filesize
4KB

Download
memory/5092-3-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/5092-7-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/5092-5-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/5092-1-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/5092-6-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download
memory/5092-23-0x0000000074E60000-0x0000000075411000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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