nanocore | a2f59e4ebf5241d0db33f1278213ade328574de5a2e8e736ab7344fbaa95cbcc

General

Target

9ac0d38eedd09a1387a0b66005d8c040N.exe
Size

282KB
MD5

9ac0d38eedd09a1387a0b66005d8c040
SHA1

c5fcfd375c0aa517eeefe68e739dfb17caa1b588
SHA256

a2f59e4ebf5241d0db33f1278213ade328574de5a2e8e736ab7344fbaa95cbcc
SHA512

3b5a3292f567d8e5074540f806f3f57cb0cd3df4a366372bcc2a80a31340419425d6ca03e82a94fb06f9920dd2451c8a0acba55806a358d799b35e6a77d19f74
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfy:boSeGUA5YZazpXUmZhZ6SX

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	9ac0d38eedd09a1387a0b66005d8c040N.exe

Executes dropped EXE 2 IoCs

pid	Process
4648	a1punf5t2of.exe
3384	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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	9ac0d38eedd09a1387a0b66005d8c040N.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 4648 set thread context of 3384	4648	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	9ac0d38eedd09a1387a0b66005d8c040N.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
3384	a1punf5t2of.exe
3384	a1punf5t2of.exe
3384	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3384	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3384	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4828 wrote to memory of 4648	4828	9ac0d38eedd09a1387a0b66005d8c040N.exe	94
PID 4828 wrote to memory of 4648	4828	9ac0d38eedd09a1387a0b66005d8c040N.exe	94
PID 4828 wrote to memory of 4648	4828	9ac0d38eedd09a1387a0b66005d8c040N.exe	94
PID 4648 wrote to memory of 3384	4648	a1punf5t2of.exe	95
PID 4648 wrote to memory of 3384	4648	a1punf5t2of.exe	95
PID 4648 wrote to memory of 3384	4648	a1punf5t2of.exe	95
PID 4648 wrote to memory of 3384	4648	a1punf5t2of.exe	95
PID 4648 wrote to memory of 3384	4648	a1punf5t2of.exe	95
PID 4648 wrote to memory of 3384	4648	a1punf5t2of.exe	95
PID 4648 wrote to memory of 3384	4648	a1punf5t2of.exe	95
PID 4648 wrote to memory of 3384	4648	a1punf5t2of.exe	95

C:\Users\Admin\AppData\Local\Temp\9ac0d38eedd09a1387a0b66005d8c040N.exe
"C:\Users\Admin\AppData\Local\Temp\9ac0d38eedd09a1387a0b66005d8c040N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4828
- 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:4648
- - 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:3384

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
ae05ab72d8dbb35a8b17af6681139515

SHA1
76619f7e9ff8c13ad4ceb0d2f694eff58941e34c

SHA256
5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67

SHA512
06f9e06e5a953b36a8d6706d788e931ae7117ba5075da984b52209113350434f026a68197e9acfa98a96991092f82f4a0d242f7f0a6d3a3d13561e73564b45db

Download Submit
memory/3384-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3384-41-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/3384-38-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/3384-37-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/3384-34-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/3384-35-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/3384-33-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/3384-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3384-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4648-24-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4648-23-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4648-40-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4648-25-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4648-26-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4648-27-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4648-21-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4828-22-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4828-7-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4828-6-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4828-5-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4828-4-0x0000000075362000-0x0000000075363000-memory.dmp

Filesize
4KB

Download
memory/4828-3-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4828-2-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4828-0-0x0000000075362000-0x0000000075363000-memory.dmp

Filesize
4KB

Download
memory/4828-1-0x0000000075360000-0x0000000075911000-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