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

Executes dropped EXE 2 IoCs

pid	Process
2568	a1punf5t2of.exe
2744	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
3032	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe
2568	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-1-5-21-1163522206-1469769407-485553996-1000\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 2568 set thread context of 2744	2568	a1punf5t2of.exe	32

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	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.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
2744	a1punf5t2of.exe
2744	a1punf5t2of.exe
2744	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2744	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2568	3032	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe	31
PID 3032 wrote to memory of 2568	3032	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe	31
PID 3032 wrote to memory of 2568	3032	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe	31
PID 3032 wrote to memory of 2568	3032	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe	31
PID 3032 wrote to memory of 2568	3032	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe	31
PID 3032 wrote to memory of 2568	3032	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe	31
PID 3032 wrote to memory of 2568	3032	a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe	31
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32
PID 2568 wrote to memory of 2744	2568	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe
"C:\Users\Admin\AppData\Local\Temp\a4763320a093f7e11e4ecdcc45a813938a7fc27213f4769c3d70bed84af5d718.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2568
- - 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:2744

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

System Information Discovery

2

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

\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
254KB

MD5
4c3f7914f5b2b9814b93ef283158c90c

SHA1
82785f7105575c3c8505a2cd8e4f773204bb7579

SHA256
aecf8c3b417a17f9f2511983da810d8546978edd70bc0e19a5050273fcf782db

SHA512
ac3d7ad9845c87013b07041125f165e43fafe5a2f99a1797fb10894dd1b63cf6195729f838455a25a33b68bd72b8b03b87018e4f0be6cb02d36e0f77d3d9d7dd

Download Submit
memory/2568-39-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/2568-19-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/2568-18-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/2568-17-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/2568-16-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/2744-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-37-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-36-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3032-2-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/3032-0-0x0000000074541000-0x0000000074542000-memory.dmp

Filesize
4KB

Download
memory/3032-6-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/3032-3-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/3032-4-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/3032-15-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/3032-5-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/3032-1-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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