nanocore | df8d75612370b66362ca06a5a2da1af4a22aec4e65a90463e38b2a9d5a9c2bb2

General

Target

e979d65d7c5a5561071b49cf749593c0N.exe
Size

282KB
MD5

e979d65d7c5a5561071b49cf749593c0
SHA1

26317e798209821396aa6410c1f50e942365a395
SHA256

df8d75612370b66362ca06a5a2da1af4a22aec4e65a90463e38b2a9d5a9c2bb2
SHA512

9fffe3f6f8e461d9575c9c5d322d2b31242272829974e30248b51b5484858aef760ff6d11c6ebc5219662291b85134f8c7e83820766c238df5b072f67274a373
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfD:boSeGUA5YZazpXUmZhZ6SK

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	e979d65d7c5a5561071b49cf749593c0N.exe

Executes dropped EXE 2 IoCs

pid	Process
2796	a1punf5t2of.exe
3608	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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	e979d65d7c5a5561071b49cf749593c0N.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 2796 set thread context of 3608	2796	a1punf5t2of.exe	103

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	e979d65d7c5a5561071b49cf749593c0N.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 4 IoCs

pid	Process
3608	a1punf5t2of.exe
3608	a1punf5t2of.exe
3608	a1punf5t2of.exe
3608	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3608	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3608	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 2796	4844	e979d65d7c5a5561071b49cf749593c0N.exe	102
PID 4844 wrote to memory of 2796	4844	e979d65d7c5a5561071b49cf749593c0N.exe	102
PID 4844 wrote to memory of 2796	4844	e979d65d7c5a5561071b49cf749593c0N.exe	102
PID 2796 wrote to memory of 3608	2796	a1punf5t2of.exe	103
PID 2796 wrote to memory of 3608	2796	a1punf5t2of.exe	103
PID 2796 wrote to memory of 3608	2796	a1punf5t2of.exe	103
PID 2796 wrote to memory of 3608	2796	a1punf5t2of.exe	103
PID 2796 wrote to memory of 3608	2796	a1punf5t2of.exe	103
PID 2796 wrote to memory of 3608	2796	a1punf5t2of.exe	103
PID 2796 wrote to memory of 3608	2796	a1punf5t2of.exe	103
PID 2796 wrote to memory of 3608	2796	a1punf5t2of.exe	103

C:\Users\Admin\AppData\Local\Temp\e979d65d7c5a5561071b49cf749593c0N.exe
"C:\Users\Admin\AppData\Local\Temp\e979d65d7c5a5561071b49cf749593c0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4844
- 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:2796
- - 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:3608

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4400,i,10597648459838880772,16562651767759956329,262144 --variations-seed-version --mojo-platform-channel-handle=4164 /prefetch:8
1⤵
PID:2476

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
d571035777fefc10de17337240ccdb0f

SHA1
dac4bdc6cefa8610c5082ac67c0fc4eb721190ae

SHA256
da9c13c14803113fe2fbfde8318194400bdd0b64f310cbdfe9479528a6ae9e92

SHA512
f45736224fec91668a919e6ce3e49c08e791a738f422fac13b55c721b6a5d4ac2d631f8a00ed796232130cac660c0778e7397a3aae53bac2d8663ef4529bc6cd

Download Submit
memory/2796-20-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/2796-41-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/2796-26-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/2796-25-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/2796-24-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/2796-23-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/2796-22-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/3608-32-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/3608-36-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/3608-42-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/3608-39-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/3608-38-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/3608-37-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/3608-34-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/3608-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3608-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3608-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3608-33-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-0-0x0000000074712000-0x0000000074713000-memory.dmp

Filesize
4KB

Download
memory/4844-2-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-21-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-3-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-4-0x0000000074712000-0x0000000074713000-memory.dmp

Filesize
4KB

Download
memory/4844-5-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-1-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-6-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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