nanocore | 9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094

General

Target

9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094.exe
Size

282KB
MD5

07493d7e7048f36737dd0dd4e8cac750
SHA1

f4071e1fdfd6c0f6991e82939c2351859ff8834f
SHA256

9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094
SHA512

e55854369dbcd136fc3cafbc9f73186d831190a56d519281996566cc3b81d1c17564755934a7ea70ab77c12cce62fbafa8cfebccd597ef6f10a586b825484544
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfpc:boSeGUA5YZazpXUmZhZ6SD

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094.exe

Executes dropped EXE 2 IoCs

pid	Process
4516	a1punf5t2of.exe
3596	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094.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 4516 set thread context of 3596	4516	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	9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094.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
3596	a1punf5t2of.exe
3596	a1punf5t2of.exe
3596	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3596	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3596	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1572 wrote to memory of 4516	1572	9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094.exe	94
PID 1572 wrote to memory of 4516	1572	9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094.exe	94
PID 1572 wrote to memory of 4516	1572	9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094.exe	94
PID 4516 wrote to memory of 3596	4516	a1punf5t2of.exe	95
PID 4516 wrote to memory of 3596	4516	a1punf5t2of.exe	95
PID 4516 wrote to memory of 3596	4516	a1punf5t2of.exe	95
PID 4516 wrote to memory of 3596	4516	a1punf5t2of.exe	95
PID 4516 wrote to memory of 3596	4516	a1punf5t2of.exe	95
PID 4516 wrote to memory of 3596	4516	a1punf5t2of.exe	95
PID 4516 wrote to memory of 3596	4516	a1punf5t2of.exe	95
PID 4516 wrote to memory of 3596	4516	a1punf5t2of.exe	95

C:\Users\Admin\AppData\Local\Temp\9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094.exe
"C:\Users\Admin\AppData\Local\Temp\9cd53b3f4f09c11ef9f6eeca42b0407fb07c4bf8e4a3c37abfe27289dc85d094.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1572
- 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:4516
- - 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:3596

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
25e719536da5a82f8d03da07374427cb

SHA1
592c41a5fb98df96bafc5ca136f7f2c3f6e34173

SHA256
e38c65567032b085eeb358c9cb7d2a5f1a18d25abcfe40116bb3d433b3047b81

SHA512
d335220f73684496b15ce285da9895f42c7ffa150c541568c9a78b5f00679340fcb0940f8417766fbde22f2135dd5eee6ec9aa157ff0b47b430c1698a76c5853

Download Submit
memory/1572-21-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/1572-1-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/1572-2-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/1572-3-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/1572-4-0x0000000075572000-0x0000000075573000-memory.dmp

Filesize
4KB

Download
memory/1572-5-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/1572-6-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/1572-7-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/1572-0-0x0000000075572000-0x0000000075573000-memory.dmp

Filesize
4KB

Download
memory/3596-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3596-35-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/3596-41-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/3596-38-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/3596-37-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/3596-34-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/3596-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3596-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3596-33-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4516-22-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4516-23-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4516-27-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4516-26-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4516-25-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4516-40-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4516-24-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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