nanocore | a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718

General

Target

a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe
Size

254KB
MD5

b1d091fcc52ea1414e9ff79ee5c7801a
SHA1

6dab4c38bf631e201d4134824a034570b2ae88bc
SHA256

a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718
SHA512

9d1f31f8c3f821e3376d95925216537bec0888312c9f711d5ed9d47efee9a82a96bb4561458b1db151e91610bf0ae525ad53794038e3ea5a0768f57e0b48613c
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ1E:EeGUA5YZazpXUmZhmE

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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe

Executes dropped EXE 2 IoCs

pid	Process
764	a1punf5t2of.exe
2284	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.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 764 set thread context of 2284	764	a1punf5t2of.exe	100

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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2284	a1punf5t2of.exe
2284	a1punf5t2of.exe
2284	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2284	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2284	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4428 wrote to memory of 764	4428	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe	99
PID 4428 wrote to memory of 764	4428	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe	99
PID 4428 wrote to memory of 764	4428	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe	99
PID 764 wrote to memory of 2284	764	a1punf5t2of.exe	100
PID 764 wrote to memory of 2284	764	a1punf5t2of.exe	100
PID 764 wrote to memory of 2284	764	a1punf5t2of.exe	100
PID 764 wrote to memory of 2284	764	a1punf5t2of.exe	100
PID 764 wrote to memory of 2284	764	a1punf5t2of.exe	100
PID 764 wrote to memory of 2284	764	a1punf5t2of.exe	100
PID 764 wrote to memory of 2284	764	a1punf5t2of.exe	100
PID 764 wrote to memory of 2284	764	a1punf5t2of.exe	100

C:\Users\Admin\AppData\Local\Temp\a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe
"C:\Users\Admin\AppData\Local\Temp\a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4428
- 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:764
- - 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:2284

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
254KB

MD5
cc20b8c8d261fd6bb0dbfabcb9ba66c9

SHA1
7e9f10532a85c9ec488053f78fbb1e20b7d65f2e

SHA256
688a1d17a739fe4f97684f02d7062a3891af989574a3914fe1d1f5d7c1bd9633

SHA512
e72f6ad504220acf240f5f4f8fb589ffef84025d1239c230c8da5c609a3d80a6a00f54ff1a94eeb98ac887d8ac5adee28040a0a22276c6f0cec668aa8e92264c

Download Submit
memory/764-39-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/764-26-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/764-25-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/764-24-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/764-22-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/764-21-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2284-32-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2284-34-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2284-40-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2284-37-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2284-36-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2284-33-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2284-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2284-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2284-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4428-2-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/4428-3-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/4428-0-0x0000000075042000-0x0000000075043000-memory.dmp

Filesize
4KB

Download
memory/4428-4-0x0000000075042000-0x0000000075043000-memory.dmp

Filesize
4KB

Download
memory/4428-7-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/4428-23-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/4428-5-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/4428-1-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/4428-6-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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