nanocore | 548529c38438f4a9aea915448e183f24d4ddbe793a86090075775a154d59f067

General

Target

XtasyExecutor.exe
Size

202KB
MD5

20bd0480bb862bd1d073477a87aede81
SHA1

3c7c72fc3c1bec023386ac6ed14ad5cb785fe4ce
SHA256

548529c38438f4a9aea915448e183f24d4ddbe793a86090075775a154d59f067
SHA512

6b4817a7921bb62bbaf6835a3948a1811914f652f5f6ad86fe0b52376b6347d180488c3de4f02ba8ec962c45c5b4d6ad91eba11441989bbb42dab2863dfaa766
SSDEEP

6144:gLV6Bta6dtJmakIM5E/hBp4OnvF3ZO2hdi:gLV6BtpmkJBprnvF3AWi

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

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-1-5-21-3506525125-3566313221-3651816328-1000\Control Panel\International\Geo\Nation	XtasyExecutor.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\UPNP Host = "C:\\Program Files (x86)\\UPNP Host\\upnphost.exe"	XtasyExecutor.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	XtasyExecutor.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\UPNP Host\upnphost.exe	XtasyExecutor.exe

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	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	XtasyExecutor.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3506525125-3566313221-3651816328-1000_Classes\Local Settings	XtasyExecutor.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

pid	Process
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe
3404	XtasyExecutor.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3404	XtasyExecutor.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3404	XtasyExecutor.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3404 wrote to memory of 3336	3404	XtasyExecutor.exe	83
PID 3404 wrote to memory of 3336	3404	XtasyExecutor.exe	83
PID 3404 wrote to memory of 3336	3404	XtasyExecutor.exe	83
PID 3404 wrote to memory of 3020	3404	XtasyExecutor.exe	87
PID 3404 wrote to memory of 3020	3404	XtasyExecutor.exe	87
PID 3404 wrote to memory of 3020	3404	XtasyExecutor.exe	87

C:\Users\Admin\AppData\Local\Temp\XtasyExecutor.exe
"C:\Users\Admin\AppData\Local\Temp\XtasyExecutor.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\a19724a8.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3336
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\81fb3eaf.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3020

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\a19724a8.bat

Filesize
119B

MD5
a2d6452c2591ae6ba57f9dfe062f4f18

SHA1
1b7475b39c3bb92742c5a325fd54f08d9af40c1a

SHA256
0a996e7b6557652e28631d7f2cd4504406bddb49415da37f05b9cb271bb509f8

SHA512
a16802aa756eaf63b48beade916c5570ebfcb8b3419d0a7d1a6416bc354d458f788b7a95fe0744b2ddb63e9d78ad133fb2ec09f1028515fa60d66c6c1eeba9ef

Download Submit
memory/3404-0-0x0000000074F22000-0x0000000074F23000-memory.dmp

Filesize
4KB

Download
memory/3404-1-0x0000000074F20000-0x00000000754D1000-memory.dmp

Filesize
5.7MB

Download
memory/3404-2-0x0000000074F20000-0x00000000754D1000-memory.dmp

Filesize
5.7MB

Download
memory/3404-4-0x0000000074F20000-0x00000000754D1000-memory.dmp

Filesize
5.7MB

Download
memory/3404-8-0x0000000074F22000-0x0000000074F23000-memory.dmp

Filesize
4KB

Download
memory/3404-9-0x0000000074F20000-0x00000000754D1000-memory.dmp

Filesize
5.7MB

Download
memory/3404-10-0x0000000074F20000-0x00000000754D1000-memory.dmp

Filesize
5.7MB

Download
memory/3404-11-0x0000000074F20000-0x00000000754D1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads