nanocore | ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7

General

Target

ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7.exe
Size

279KB
MD5

16e89ca34b3276062447a0df2d484661
SHA1

a14c2505b02faab051881887911f9fa6a5430d40
SHA256

ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7
SHA512

dc80a613e0fc0aba3c4217190dc7f624ccad684dc3b977b1cffa1d944e24c49297511d8aa66c7b4d3ec3b6aef6ff1fefa2db2e4999af5374123dc3e921d99543
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fa:boSeGUA5YZazpXUmZhZ6C

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7.exe

Executes dropped EXE 2 IoCs

pid	Process
1620	a1punf5t2of.exe
1136	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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7.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 1620 set thread context of 1136	1620	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	ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7.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
1136	a1punf5t2of.exe
1136	a1punf5t2of.exe
1136	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1136	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1136	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 1620	2220	ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7.exe	84
PID 2220 wrote to memory of 1620	2220	ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7.exe	84
PID 2220 wrote to memory of 1620	2220	ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7.exe	84
PID 1620 wrote to memory of 1136	1620	a1punf5t2of.exe	90
PID 1620 wrote to memory of 1136	1620	a1punf5t2of.exe	90
PID 1620 wrote to memory of 1136	1620	a1punf5t2of.exe	90
PID 1620 wrote to memory of 1136	1620	a1punf5t2of.exe	90
PID 1620 wrote to memory of 1136	1620	a1punf5t2of.exe	90
PID 1620 wrote to memory of 1136	1620	a1punf5t2of.exe	90
PID 1620 wrote to memory of 1136	1620	a1punf5t2of.exe	90
PID 1620 wrote to memory of 1136	1620	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7.exe
"C:\Users\Admin\AppData\Local\Temp\ac8bf95909b7774dc6cdd3d607b873db7ab5b538f1dd87ddec06c6c907817cc7.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2220
- 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:1620
- - 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:1136

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
279KB

MD5
8fd792fae4e937545d609d07b2b87ef9

SHA1
cbee56cb91c47faa5d17bd1c6c92b3a0d9cff46b

SHA256
b3f5d8c9753e6e81ac26b9612ad8538db55a0d9c575c7a3ee355f603f2d17c60

SHA512
e8c794ed83072bbaffcdc67ef0313a8805d693733536f362f7d1f1e241b58750159ab9ae4ea93bb571e6303442c7fb92f514428c12ff0605f02af88f7fd2f128

Download Submit
memory/1136-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1136-39-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1136-36-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1136-35-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1136-32-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1136-33-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1136-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1136-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1620-24-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1620-23-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1620-38-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1620-22-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1620-25-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1620-26-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/2220-7-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/2220-0-0x0000000074F42000-0x0000000074F43000-memory.dmp

Filesize
4KB

Download
memory/2220-6-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/2220-5-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/2220-4-0x0000000074F42000-0x0000000074F43000-memory.dmp

Filesize
4KB

Download
memory/2220-3-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/2220-2-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/2220-21-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/2220-1-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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