nanocore | d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e

General

Target

d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe
Size

256KB
MD5

b172dbd342a0f600354cda3f5a068008
SHA1

3ea34338e307ad428937c888bc780a7398f2d098
SHA256

d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e
SHA512

45b916616fa23fac7146c7c0ca3c8f44208f073fec72725b0fe34638e493458ca152f06c41292d8a52e21ca2e6f9f7b58cd2a26ec9bcf73d86b18bafcbe2c4f0
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4R:EeGUA5YZazpXUmZhPR

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe

Executes dropped EXE 2 IoCs

pid	Process
1384	a1punf5t2of.exe
4776	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.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 1384 set thread context of 4776	1384	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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4776	a1punf5t2of.exe
4776	a1punf5t2of.exe
4776	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4776	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 1384	5004	d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe	96
PID 5004 wrote to memory of 1384	5004	d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe	96
PID 5004 wrote to memory of 1384	5004	d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe	96
PID 1384 wrote to memory of 4776	1384	a1punf5t2of.exe	97
PID 1384 wrote to memory of 4776	1384	a1punf5t2of.exe	97
PID 1384 wrote to memory of 4776	1384	a1punf5t2of.exe	97
PID 1384 wrote to memory of 4776	1384	a1punf5t2of.exe	97
PID 1384 wrote to memory of 4776	1384	a1punf5t2of.exe	97
PID 1384 wrote to memory of 4776	1384	a1punf5t2of.exe	97
PID 1384 wrote to memory of 4776	1384	a1punf5t2of.exe	97
PID 1384 wrote to memory of 4776	1384	a1punf5t2of.exe	97

C:\Users\Admin\AppData\Local\Temp\d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe
"C:\Users\Admin\AppData\Local\Temp\d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5004
- 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:1384
- - 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:4776

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
b2c0565160d2d74793cab42a8655f654

SHA1
c9202fb8992be0bb874aa872f22df9c4907a3b1b

SHA256
9750294e0341729ece2a55fb946936274558d7b416bdbde9aff8645f1dd3d6c2

SHA512
2b71955305c6e5afc0e41be345e7f0909908ebfaf001a6656ddfaa0877812b65658ddda51bbc4fd7107a1391a0d931ef3def633b842431e624aee5cf0b6076c0

Download Submit
memory/1384-39-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/1384-26-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/1384-25-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/1384-24-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/1384-23-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/1384-22-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4776-32-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4776-34-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4776-40-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4776-37-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4776-36-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4776-33-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4776-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4776-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4776-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5004-2-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/5004-3-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/5004-0-0x0000000075162000-0x0000000075163000-memory.dmp

Filesize
4KB

Download
memory/5004-4-0x0000000075162000-0x0000000075163000-memory.dmp

Filesize
4KB

Download
memory/5004-7-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/5004-5-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/5004-6-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/5004-1-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/5004-21-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads