nanocore | 691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20/01/2025, 04:24

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General

Target
691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe
Size 1.3MB
Sample250120-e1sa1a1nek
SHA256 691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8
MD5 eda1f9271a18bd14c8e3ccc575ef8da0
SHA1 704f796328f013f1ac9d2f82104c254bc96b8130
SHA512 50874d1629809f4e1c3ebf04ddd5303f21ec30e3f4782c398f369cbc048c7fc63af23e59497815325619a650d724270d498ffbb8feb0a1f11055ab603f8073b1
SSDEEP 24576:gAHnh+eWsN3skA4RV1Hom2KXMmHaH04xmQPD5U:Xh+ZkldoPK8YafxU
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

ponnyhurb.duckdns.org:6290

Mutex

b3d970d4-fe05-46df-a7e4-b0e6b6eee3ae

Attributes

activate_away_mode
false
backup_connection_host
ponnyhurb.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-02-04T04:37:36.694334036Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
3992
connection_port
6290
default_group
ponnyhurb.duckdns.org
enable_debug_mode
true
gc_threshold
1.0485783e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
b3d970d4-fe05-46df-a7e4-b0e6b6eee3ae
mutex_timeout
4963
prevent_system_sleep
false
primary_connection_host
ponnyhurb.duckdns.org
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
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 3 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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	convertvhd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	convertvhd.exe

Executes dropped EXE 2 IoCs

pid	Process
3460	convertvhd.exe
1440	convertvhd.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\LAN Service = "C:\\Program Files (x86)\\LAN Service\\lansv.exe"	RegAsm.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	RegAsm.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0007000000023c92-20.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4808 set thread context of 3584	4808	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	85
PID 3460 set thread context of 2316	3460	convertvhd.exe	110
PID 1440 set thread context of 2984	1440	convertvhd.exe	114

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\LAN Service\lansv.exe	RegAsm.exe
File created	C:\Program Files (x86)\LAN Service\lansv.exe	RegAsm.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 11 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	convertvhd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	convertvhd.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2132	schtasks.exe
5076	schtasks.exe
2444	schtasks.exe
1360	schtasks.exe
2180	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3584	RegAsm.exe
3584	RegAsm.exe
3584	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3584	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3584	RegAsm.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 3584	4808	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	85
PID 4808 wrote to memory of 3584	4808	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	85
PID 4808 wrote to memory of 3584	4808	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	85
PID 4808 wrote to memory of 3584	4808	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	85
PID 4808 wrote to memory of 3584	4808	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	85
PID 3584 wrote to memory of 2132	3584	RegAsm.exe	86
PID 3584 wrote to memory of 2132	3584	RegAsm.exe	86
PID 3584 wrote to memory of 2132	3584	RegAsm.exe	86
PID 3584 wrote to memory of 5076	3584	RegAsm.exe	88
PID 3584 wrote to memory of 5076	3584	RegAsm.exe	88
PID 3584 wrote to memory of 5076	3584	RegAsm.exe	88
PID 4808 wrote to memory of 2444	4808	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	99
PID 4808 wrote to memory of 2444	4808	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	99
PID 4808 wrote to memory of 2444	4808	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	99
PID 3460 wrote to memory of 2316	3460	convertvhd.exe	110
PID 3460 wrote to memory of 2316	3460	convertvhd.exe	110
PID 3460 wrote to memory of 2316	3460	convertvhd.exe	110
PID 3460 wrote to memory of 2316	3460	convertvhd.exe	110
PID 3460 wrote to memory of 2316	3460	convertvhd.exe	110
PID 3460 wrote to memory of 1360	3460	convertvhd.exe	111
PID 3460 wrote to memory of 1360	3460	convertvhd.exe	111
PID 3460 wrote to memory of 1360	3460	convertvhd.exe	111
PID 1440 wrote to memory of 2984	1440	convertvhd.exe	114
PID 1440 wrote to memory of 2984	1440	convertvhd.exe	114
PID 1440 wrote to memory of 2984	1440	convertvhd.exe	114
PID 1440 wrote to memory of 2984	1440	convertvhd.exe	114
PID 1440 wrote to memory of 2984	1440	convertvhd.exe	114
PID 1440 wrote to memory of 2180	1440	convertvhd.exe	115
PID 1440 wrote to memory of 2180	1440	convertvhd.exe	115
PID 1440 wrote to memory of 2180	1440	convertvhd.exe	115

C:\Users\Admin\AppData\Local\Temp\691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe
"C:\Users\Admin\AppData\Local\Temp\691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3584
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "LAN Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9AE8.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2132
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "LAN Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9B76.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5076
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn chglogon /tr "C:\Users\Admin\CompatTelRunner\convertvhd.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2444

C:\Users\Admin\CompatTelRunner\convertvhd.exe
C:\Users\Admin\CompatTelRunner\convertvhd.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3460
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn chglogon /tr "C:\Users\Admin\CompatTelRunner\convertvhd.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1360

C:\Users\Admin\CompatTelRunner\convertvhd.exe
C:\Users\Admin\CompatTelRunner\convertvhd.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1440
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2984
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn chglogon /tr "C:\Users\Admin\CompatTelRunner\convertvhd.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

RegAsm.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\RegAsm.exe.log
Size 496B
SHA256 e248cef9500ed6e0c9f99d72a2a6a36955a5f0cfc0725748ef25a733cc8282f6
MD5 5b4789d01bb4d7483b71e1a35bce6a8b
SHA1 de083f2131c9a763c0d1810c97a38732146cffbf
SHA512 357e18ef30430e4b9cc4f2569b9735b1cd12f934c83162e4de78ac29ba9703b63ddb624ccc22afd5a5868f6e9d91a3c64581846abac22e9625f5b2e3d80b3ede
MD5 SHA1 SHA512

Submit Download

tmp9AE8.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp9AE8.tmp
Size 1KB
SHA256 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
MD5 c6f0625bf4c1cdfb699980c9243d3b22
SHA1 43de1fe580576935516327f17b5da0c656c72851
SHA512 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
MD5 SHA1 SHA512

Submit Download

tmp9B76.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp9B76.tmp
Size 1KB
SHA256 578f5b0ff051f02f8e0a67fc3424dad554fa9489875475ea624fbb63eabfcbf7
MD5 6b30dba7972c92c9a1b881e88c108b15
SHA1 f76207985cc5a1f70edb2fb5bd45678f195a4564
SHA512 e3dd368937f863cb07453de12173580fb63b8d3983db7119c24860f227c89ded76401c47607f5b1134d215d46fe2b40d4bc3d7299374f1e8abecdeaefc7b9099
MD5 SHA1 SHA512

Submit Download

convertvhd.exe

Path C:\Users\Admin\CompatTelRunner\convertvhd.exe
Size 1.3MB
SHA256 698be9bc7c789017c35eba60c2ce05016969ff7698d81f05d3ab0f9ab6fa1e0c
MD5 7e16d35bb698ad5567fc8d8aa175e3b2
SHA1 ad27b5e4e4f76c68fafbcf3ad92df39245a52e69
SHA512 aae7f919aac2090b3a5bb9fa54f62d490b99157c0b5234eacbb9c09c0c9deea65d1e68297ac99739ae2bc33da1ef286ce5cbaceb765ff7c43a08620aeed6cf2d
SSDEEP 24576:gAHnh+eWsN3skA4RV1Hom2KXMmHaH04xmQPD5O:Xh+ZkldoPK8YafxO
MD5 SHA1 SHA512 SSDEEP

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memory/3584-1-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3584-6-0x00000000745C2000-0x00000000745C3000-memory.dmp

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memory/3584-7-0x00000000745C0000-0x0000000074B71000-memory.dmp

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memory/3584-8-0x00000000745C0000-0x0000000074B71000-memory.dmp

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memory/3584-16-0x00000000745C2000-0x00000000745C3000-memory.dmp

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memory/3584-17-0x00000000745C0000-0x0000000074B71000-memory.dmp

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memory/3584-18-0x00000000745C0000-0x0000000074B71000-memory.dmp

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memory/4808-0-0x0000000001760000-0x0000000001761000-memory.dmp

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