nanocore | 8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5

General

Target

8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5N.exe
Size

279KB
MD5

93304ce93fa403f0b01ca1df14beb630
SHA1

92deb96ebdb5fc6b5742bc7bd0206e43f7004593
SHA256

8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5
SHA512

088d1c2478297630bb0f082146ca7b19b912db889043d267914b31e932f86ff8354fce8165e0e7a9049d3592138e6c6839db97870d1a872c3eceb40d67b81c89
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66f+:boSeGUA5YZazpXUmZhZ6W

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
Nanocore family
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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5N.exe

Executes dropped EXE 2 IoCs

pid	Process
3240	a1punf5t2of.exe
4340	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5N.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 3240 set thread context of 4340	3240	a1punf5t2of.exe	99

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	8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5N.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
4340	a1punf5t2of.exe
4340	a1punf5t2of.exe
4340	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4340	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4340	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 3240	4248	8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5N.exe	98
PID 4248 wrote to memory of 3240	4248	8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5N.exe	98
PID 4248 wrote to memory of 3240	4248	8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5N.exe	98
PID 3240 wrote to memory of 4340	3240	a1punf5t2of.exe	99
PID 3240 wrote to memory of 4340	3240	a1punf5t2of.exe	99
PID 3240 wrote to memory of 4340	3240	a1punf5t2of.exe	99
PID 3240 wrote to memory of 4340	3240	a1punf5t2of.exe	99
PID 3240 wrote to memory of 4340	3240	a1punf5t2of.exe	99
PID 3240 wrote to memory of 4340	3240	a1punf5t2of.exe	99
PID 3240 wrote to memory of 4340	3240	a1punf5t2of.exe	99
PID 3240 wrote to memory of 4340	3240	a1punf5t2of.exe	99

C:\Users\Admin\AppData\Local\Temp\8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5N.exe
"C:\Users\Admin\AppData\Local\Temp\8800a3525597fe289fce9c1f21c07c3648d43fd7f86a4e01d73e2c681d13c6e5N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4248
- 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:3240
- - 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:4340

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
279KB

MD5
6b7e826dbfc840eb71d1ae92c76d4869

SHA1
3280a742c2f1e9b1fb997d494175eeadbde7f03b

SHA256
d97533dd572b5215f3270fd4bf33e8ad1fb6a70f9e7b897fc86b935dc28b5f20

SHA512
a0277b053a69e9ca6eefe0e105d7fe56eda07d0977834dd5b04f40931602e3074321343e46f01e4b4b478bd5af30663d5e83144d7c3ce936a71744d71663a997

Download Submit
memory/3240-38-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/3240-26-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/3240-25-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/3240-24-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/3240-23-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/3240-22-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4248-6-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4248-7-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4248-0-0x0000000074802000-0x0000000074803000-memory.dmp

Filesize
4KB

Download
memory/4248-21-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4248-5-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4248-4-0x0000000074802000-0x0000000074803000-memory.dmp

Filesize
4KB

Download
memory/4248-3-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4248-2-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4248-1-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4340-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4340-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4340-32-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4340-33-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4340-35-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4340-36-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4340-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4340-39-0x0000000074800000-0x0000000074DB1000-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