nanocore | cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-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

Executes dropped EXE 2 IoCs

pid	Process
1912	igfxEM.exe
2340	igfxEM.exe

Loads dropped DLL 2 IoCs

pid	Process
1912	igfxEM.exe
2340	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
behavioral1/files/0x0008000000016ebe-21.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2420 set thread context of 1660	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	30
PID 1912 set thread context of 2648	1912	igfxEM.exe	38
PID 2340 set thread context of 3028	2340	igfxEM.exe	42

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	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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
2312	schtasks.exe
1252	schtasks.exe
2760	schtasks.exe
2884	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1660	RegAsm.exe
1660	RegAsm.exe
1660	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1660	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1660	RegAsm.exe

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 1660	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	30
PID 2420 wrote to memory of 1660	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	30
PID 2420 wrote to memory of 1660	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	30
PID 2420 wrote to memory of 1660	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	30
PID 2420 wrote to memory of 1660	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	30
PID 2420 wrote to memory of 1660	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	30
PID 2420 wrote to memory of 1660	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	30
PID 2420 wrote to memory of 1660	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	30
PID 2420 wrote to memory of 1660	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	30
PID 1660 wrote to memory of 1252	1660	RegAsm.exe	31
PID 1660 wrote to memory of 1252	1660	RegAsm.exe	31
PID 1660 wrote to memory of 1252	1660	RegAsm.exe	31
PID 1660 wrote to memory of 1252	1660	RegAsm.exe	31
PID 2420 wrote to memory of 2760	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	34
PID 2420 wrote to memory of 2760	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	34
PID 2420 wrote to memory of 2760	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	34
PID 2420 wrote to memory of 2760	2420	cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe	34
PID 2108 wrote to memory of 1912	2108	taskeng.exe	37
PID 2108 wrote to memory of 1912	2108	taskeng.exe	37
PID 2108 wrote to memory of 1912	2108	taskeng.exe	37
PID 2108 wrote to memory of 1912	2108	taskeng.exe	37
PID 1912 wrote to memory of 2648	1912	igfxEM.exe	38
PID 1912 wrote to memory of 2648	1912	igfxEM.exe	38
PID 1912 wrote to memory of 2648	1912	igfxEM.exe	38
PID 1912 wrote to memory of 2648	1912	igfxEM.exe	38
PID 1912 wrote to memory of 2648	1912	igfxEM.exe	38
PID 1912 wrote to memory of 2648	1912	igfxEM.exe	38
PID 1912 wrote to memory of 2648	1912	igfxEM.exe	38
PID 1912 wrote to memory of 2648	1912	igfxEM.exe	38
PID 1912 wrote to memory of 2648	1912	igfxEM.exe	38
PID 1912 wrote to memory of 2884	1912	igfxEM.exe	39
PID 1912 wrote to memory of 2884	1912	igfxEM.exe	39
PID 1912 wrote to memory of 2884	1912	igfxEM.exe	39
PID 1912 wrote to memory of 2884	1912	igfxEM.exe	39
PID 2108 wrote to memory of 2340	2108	taskeng.exe	41
PID 2108 wrote to memory of 2340	2108	taskeng.exe	41
PID 2108 wrote to memory of 2340	2108	taskeng.exe	41
PID 2108 wrote to memory of 2340	2108	taskeng.exe	41
PID 2340 wrote to memory of 3028	2340	igfxEM.exe	42
PID 2340 wrote to memory of 3028	2340	igfxEM.exe	42
PID 2340 wrote to memory of 3028	2340	igfxEM.exe	42
PID 2340 wrote to memory of 3028	2340	igfxEM.exe	42
PID 2340 wrote to memory of 3028	2340	igfxEM.exe	42
PID 2340 wrote to memory of 3028	2340	igfxEM.exe	42
PID 2340 wrote to memory of 3028	2340	igfxEM.exe	42
PID 2340 wrote to memory of 3028	2340	igfxEM.exe	42
PID 2340 wrote to memory of 3028	2340	igfxEM.exe	42
PID 2340 wrote to memory of 2312	2340	igfxEM.exe	43
PID 2340 wrote to memory of 2312	2340	igfxEM.exe	43
PID 2340 wrote to memory of 2312	2340	igfxEM.exe	43
PID 2340 wrote to memory of 2312	2340	igfxEM.exe	43

C:\Users\Admin\AppData\Local\Temp\cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe
"C:\Users\Admin\AppData\Local\Temp\cd1eeec1fa45dcddecd45c327025f245384347e6a2bf44f9ae647a9678e324cb.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2420
- 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:1660
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB941.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1252
- 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:2760

C:\Windows\system32\taskeng.exe
taskeng.exe {4CE770F6-84B8-48CA-A56D-4BAAFC1DA4FE} S-1-5-21-3450744190-3404161390-554719085-1000:PDIZKVQX\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\WinSAT\igfxEM.exe
  C:\Users\Admin\WinSAT\igfxEM.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1912
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2648
- - 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
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2884
- C:\Users\Admin\WinSAT\igfxEM.exe
  C:\Users\Admin\WinSAT\igfxEM.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2340
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3028
- - 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
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2312

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

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

C:\Users\Admin\AppData\Local\Temp\tmpB941.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

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

Filesize
1.4MB

MD5
17bbff278b8974bcb1a72c133a09e273

SHA1
39444d1c870681c6be695d4bd467b717e581c5e5

SHA256
d3f6344ecc55fa4bf2952515ce6ef22dd20ed12898b50928e7530bca6e05ab2b

SHA512
0619c977a760ca27763b564cadf32f1647903d70a389a1962671725e7fd96a4d8076f7bd4f094226010fe3ce646ee98b682ca6189feecce64d5483d42e125f63

Download Submit
C:\Users\Admin\azroles.lnk

Filesize
719B

MD5
cff05e60acee07ed8f58e114bd5dd9b3

SHA1
6f03b2a2bcca5d33a27afd9347755b2a2bd8c9ff

SHA256
43abd9b859b701a873ad30e002bb50a27e9160d661d5b3a135ca8ef2e38f30b8

SHA512
6c2d6d876af0ab03158512d266a82ca26d3bc3e1b574b461c256d08c6a60f6de3c8fba648c33f503bcd6b5afcb12907e1aa20ac6fe252b05039247109c403f9f

Download Submit
memory/1660-10-0x00000000744D2000-0x00000000744D4000-memory.dmp

Filesize
8KB

Download
memory/1660-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1660-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1660-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1660-15-0x00000000744D0000-0x0000000074A7B000-memory.dmp

Filesize
5.7MB

Download
memory/1660-16-0x00000000744D2000-0x00000000744D4000-memory.dmp

Filesize
8KB

Download
memory/1660-17-0x00000000744D0000-0x0000000074A7B000-memory.dmp

Filesize
5.7MB

Download
memory/1660-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1660-1-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2420-0-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

Download
memory/2648-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download