nanocore | cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-08-2024 08:09

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General

Target

cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe
Size

1.4MB
MD5

c0eea841fd35f2c870db650765bd2500
SHA1

51fb560eb629d2da3bdefe52c20f10c2f2670697
SHA256

cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb
SHA512

d796963cb1db4433d58826fa6e9e17e0029d78089d0415347543cd5725470641d80e7d5f7d2350d8cb12c6c14086ec77d3c62af1a968b6f1614ba9c390c1ca00
SSDEEP

24576:6AHnh+eWsN3skA4RV1Hom2KXMmHaYDBNkmBRGEMdSR5ADIAsG/jJ45O:Nh+ZkldoPK8YaZSeIAmO

Score

10^/10

nanocore discovery evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

bnow.duckdns.org:4156

Mutex

fc4000c4-f8ec-42dc-a0ad-1edfd7548ceb

Attributes

activate_away_mode
true
backup_connection_host
bnow.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-08-20T04:39:27.808758936Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
4156
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
fc4000c4-f8ec-42dc-a0ad-1edfd7548ceb
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
bnow.duckdns.org
primary_dns_server
8.8.8.8
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

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	igfxEM.exe
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	igfxEM.exe

Executes dropped EXE 2 IoCs

pid	Process
3004	igfxEM.exe
3704	igfxEM.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/0x00070000000234a8-19.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3240 set thread context of 4324	3240	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	87
PID 3004 set thread context of 3448	3004	igfxEM.exe	101
PID 3704 set thread context of 1352	3704	igfxEM.exe	108

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 10 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	igfxEM.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	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	igfxEM.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
3460	schtasks.exe
4724	schtasks.exe
3732	schtasks.exe
1324	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4324	RegAsm.exe
4324	RegAsm.exe
4324	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4324	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4324	RegAsm.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 4324	3240	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	87
PID 3240 wrote to memory of 4324	3240	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	87
PID 3240 wrote to memory of 4324	3240	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	87
PID 3240 wrote to memory of 4324	3240	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	87
PID 3240 wrote to memory of 4324	3240	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	87
PID 4324 wrote to memory of 4724	4324	RegAsm.exe	90
PID 4324 wrote to memory of 4724	4324	RegAsm.exe	90
PID 4324 wrote to memory of 4724	4324	RegAsm.exe	90
PID 3240 wrote to memory of 3732	3240	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	97
PID 3240 wrote to memory of 3732	3240	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	97
PID 3240 wrote to memory of 3732	3240	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	97
PID 3004 wrote to memory of 3448	3004	igfxEM.exe	101
PID 3004 wrote to memory of 3448	3004	igfxEM.exe	101
PID 3004 wrote to memory of 3448	3004	igfxEM.exe	101
PID 3004 wrote to memory of 3448	3004	igfxEM.exe	101
PID 3004 wrote to memory of 3448	3004	igfxEM.exe	101
PID 3004 wrote to memory of 1324	3004	igfxEM.exe	104
PID 3004 wrote to memory of 1324	3004	igfxEM.exe	104
PID 3004 wrote to memory of 1324	3004	igfxEM.exe	104
PID 3704 wrote to memory of 1352	3704	igfxEM.exe	108
PID 3704 wrote to memory of 1352	3704	igfxEM.exe	108
PID 3704 wrote to memory of 1352	3704	igfxEM.exe	108
PID 3704 wrote to memory of 1352	3704	igfxEM.exe	108
PID 3704 wrote to memory of 1352	3704	igfxEM.exe	108
PID 3704 wrote to memory of 3460	3704	igfxEM.exe	116
PID 3704 wrote to memory of 3460	3704	igfxEM.exe	116
PID 3704 wrote to memory of 3460	3704	igfxEM.exe	116

C:\Users\Admin\AppData\Local\Temp\cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe
"C:\Users\Admin\AppData\Local\Temp\cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4324
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "NAS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp85E9.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4724
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn azroles /tr "C:\Users\Admin\WinSAT\igfxEM.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3732

C:\Users\Admin\WinSAT\igfxEM.exe
C:\Users\Admin\WinSAT\igfxEM.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3004
- 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:3448
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn azroles /tr "C:\Users\Admin\WinSAT\igfxEM.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1324

C:\Users\Admin\WinSAT\igfxEM.exe
C:\Users\Admin\WinSAT\igfxEM.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3704
- 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:1352
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn azroles /tr "C:\Users\Admin\WinSAT\igfxEM.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\RegAsm.exe.log

Filesize
496B

MD5
5b4789d01bb4d7483b71e1a35bce6a8b

SHA1
de083f2131c9a763c0d1810c97a38732146cffbf

SHA256
e248cef9500ed6e0c9f99d72a2a6a36955a5f0cfc0725748ef25a733cc8282f6

SHA512
357e18ef30430e4b9cc4f2569b9735b1cd12f934c83162e4de78ac29ba9703b63ddb624ccc22afd5a5868f6e9d91a3c64581846abac22e9625f5b2e3d80b3ede

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp85E9.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

Download Submit
C:\Users\Admin\WinSAT\igfxEM.exe

Filesize
1.4MB

MD5
a7528ee05a12f9634fcd8b356f5a07a9

SHA1
a3ca1502168990cbafbe6b2e843a08a1a279f037

SHA256
9fdca820f037bbc9be02a95d68dd6421cbfca45de3ea2a0b6f53a17b3c1f5e82

SHA512
bd9dd8015ffa0a581fd10b943db0372adb112f8b641bbb669ab451d248bd7bbd69d6eecba92797b4c789897809e95973cebf7b498a63c637e3c0f6f388dcb18b

Download Submit
memory/3240-0-0x0000000001690000-0x0000000001691000-memory.dmp

Filesize
4KB

Download
memory/3448-21-0x0000000000160000-0x0000000000198000-memory.dmp

Filesize
224KB

Download
memory/4324-7-0x0000000073B70000-0x0000000074121000-memory.dmp

Filesize
5.7MB

Download
memory/4324-14-0x0000000073B70000-0x0000000074121000-memory.dmp

Filesize
5.7MB

Download
memory/4324-15-0x0000000073B70000-0x0000000074121000-memory.dmp

Filesize
5.7MB

Download
memory/4324-13-0x0000000073B72000-0x0000000073B73000-memory.dmp

Filesize
4KB

Download
memory/4324-8-0x0000000073B70000-0x0000000074121000-memory.dmp

Filesize
5.7MB

Download
memory/4324-6-0x0000000073B72000-0x0000000073B73000-memory.dmp

Filesize
4KB

Download
memory/4324-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download