nanocore | bdfa37aaa1c420e908fb5d24d54d48cee960da18e68dbe286b4cb47b2a06341e

General

Target

bf9fc675ad3355f461e08baf4cdab220N.exe
Size

280KB
MD5

bf9fc675ad3355f461e08baf4cdab220
SHA1

1b485c6494294a33c192e44daaa09db55e3ad0ef
SHA256

bdfa37aaa1c420e908fb5d24d54d48cee960da18e68dbe286b4cb47b2a06341e
SHA512

a0f30ccb162271a21c5c06dd3357fd0d0d6974d60f7acb47b4f0877b64697da5cb9594052a7862264e9be3382fa0dd479c7cf25632ecf99543a134adb57a63f5
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKv:boSeGUA5YZazpXUmZhZ6Sv

Score

10^/10

nanocore 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-1-5-21-464762018-485119342-1613148473-1000\Control Panel\International\Geo\Nation	bf9fc675ad3355f461e08baf4cdab220N.exe

Executes dropped EXE 2 IoCs

pid	Process
244	a1punf5t2of.exe
3056	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-1-5-21-464762018-485119342-1613148473-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	bf9fc675ad3355f461e08baf4cdab220N.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 244 set thread context of 3056	244	a1punf5t2of.exe	95

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3056	a1punf5t2of.exe
3056	a1punf5t2of.exe
3056	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3056	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3056	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3956 wrote to memory of 244	3956	bf9fc675ad3355f461e08baf4cdab220N.exe	94
PID 3956 wrote to memory of 244	3956	bf9fc675ad3355f461e08baf4cdab220N.exe	94
PID 3956 wrote to memory of 244	3956	bf9fc675ad3355f461e08baf4cdab220N.exe	94
PID 244 wrote to memory of 3056	244	a1punf5t2of.exe	95
PID 244 wrote to memory of 3056	244	a1punf5t2of.exe	95
PID 244 wrote to memory of 3056	244	a1punf5t2of.exe	95
PID 244 wrote to memory of 3056	244	a1punf5t2of.exe	95
PID 244 wrote to memory of 3056	244	a1punf5t2of.exe	95
PID 244 wrote to memory of 3056	244	a1punf5t2of.exe	95
PID 244 wrote to memory of 3056	244	a1punf5t2of.exe	95
PID 244 wrote to memory of 3056	244	a1punf5t2of.exe	95

C:\Users\Admin\AppData\Local\Temp\bf9fc675ad3355f461e08baf4cdab220N.exe
"C:\Users\Admin\AppData\Local\Temp\bf9fc675ad3355f461e08baf4cdab220N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:244
- - 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
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3056

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
280KB

MD5
f680742f208ca46fa5a8429a58eb6aaa

SHA1
0a0311c43cf0beedd1777332fe9ce95569971d5f

SHA256
0826d945dbeeb889d6ef38ebf6490751ce8165e6ecc46a57a035a719ba609b6a

SHA512
4a47e8d0d0dabc725aa3753eca1d225ad21d89f1b0c0147bdcc9421db29e94165b6ca13ffb8099d7125dba88379192e3f29833d98c315b3a2b9c62030b17d43e

Download Submit
memory/244-18-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/244-33-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/244-31-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/244-20-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/244-19-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/3056-30-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/3056-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3056-35-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/3056-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3056-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3056-26-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/3056-27-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/3056-34-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/3056-28-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/3956-0-0x0000000075152000-0x0000000075153000-memory.dmp

Filesize
4KB

Download
memory/3956-2-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/3956-1-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/3956-17-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download
memory/3956-3-0x0000000075150000-0x0000000075701000-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