nanocore | 536487a863b91906226c0697373b5374e78246dc58bcb9afa281676901080277

General

Target

27b04b42d5706f5e29f7eb80e232d6d0N.exe
Size

282KB
MD5

27b04b42d5706f5e29f7eb80e232d6d0
SHA1

8baddc8fe43478936c7b3571468be68832b03890
SHA256

536487a863b91906226c0697373b5374e78246dc58bcb9afa281676901080277
SHA512

1167d68007e053b89038796203757424fda5fe2387748ba3dfbecc26107c91cbe958ef2c8bfdea302e0fc5b2c312529d802a6b931f8cc3809a754399b9aef7e8
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfz:boSeGUA5YZazpXUmZhZ6SS

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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	27b04b42d5706f5e29f7eb80e232d6d0N.exe

Executes dropped EXE 2 IoCs

pid	Process
212	a1punf5t2of.exe
2012	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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	27b04b42d5706f5e29f7eb80e232d6d0N.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 212 set thread context of 2012	212	a1punf5t2of.exe	95

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	27b04b42d5706f5e29f7eb80e232d6d0N.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
2012	a1punf5t2of.exe
2012	a1punf5t2of.exe
2012	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2012	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2012	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 212	4936	27b04b42d5706f5e29f7eb80e232d6d0N.exe	94
PID 4936 wrote to memory of 212	4936	27b04b42d5706f5e29f7eb80e232d6d0N.exe	94
PID 4936 wrote to memory of 212	4936	27b04b42d5706f5e29f7eb80e232d6d0N.exe	94
PID 212 wrote to memory of 2012	212	a1punf5t2of.exe	95
PID 212 wrote to memory of 2012	212	a1punf5t2of.exe	95
PID 212 wrote to memory of 2012	212	a1punf5t2of.exe	95
PID 212 wrote to memory of 2012	212	a1punf5t2of.exe	95
PID 212 wrote to memory of 2012	212	a1punf5t2of.exe	95
PID 212 wrote to memory of 2012	212	a1punf5t2of.exe	95
PID 212 wrote to memory of 2012	212	a1punf5t2of.exe	95
PID 212 wrote to memory of 2012	212	a1punf5t2of.exe	95

C:\Users\Admin\AppData\Local\Temp\27b04b42d5706f5e29f7eb80e232d6d0N.exe
"C:\Users\Admin\AppData\Local\Temp\27b04b42d5706f5e29f7eb80e232d6d0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4936
- 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:212
- - 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:2012

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
282KB

MD5
7788176da1ee51c0401da6a8c479812d

SHA1
9a7ccf7a627249d36a164ef1c3da6067351c7cef

SHA256
660882b854b776c035d05130cf4e325d1dec866fb1a2559a7577a1ed15e29abf

SHA512
a894661dfff5153762438141b895193583f8ad41ee20f26a3c520d4bfaefffbcbef224c33e01f24782bc7b8078ed10bae4e7bcf9325aeed0c949f5dd7fef53c6

Download Submit
memory/212-42-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/212-27-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/212-26-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/212-25-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/212-24-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/212-23-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/212-22-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2012-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2012-34-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2012-43-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2012-40-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2012-39-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2012-38-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2012-37-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2012-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2012-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2012-33-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2012-35-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4936-4-0x00000000753A2000-0x00000000753A3000-memory.dmp

Filesize
4KB

Download
memory/4936-2-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4936-0-0x00000000753A2000-0x00000000753A3000-memory.dmp

Filesize
4KB

Download
memory/4936-3-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4936-7-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4936-5-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4936-6-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4936-1-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4936-21-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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