nanocore | 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633

Analysis

max time kernel
146s
max time network
147s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
09/07/2024, 20:48

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General

Target

34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe
Size

1.4MB
MD5

3b36c3d991fa41276b159ee069d36ed0
SHA1

72a26f432db77d20ed92fbe2e8f0a140369c7478
SHA256

34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633
SHA512

af59725a9c3799c7e9501da0c70b3d6118f8982d95197f6ce6f489bb21afabc17943b3b5ff1f8338a742d69961604a53217c7f2207647b420b4f32ab2a43499f
SSDEEP

24576:6AHnh+eWsN3skA4RV1Hom2KXMmHaYDBNkmBRGEMdSR5ADIAsG/jJ45h:Nh+ZkldoPK8YaZSeIAmh

Score

10^/10

nanocore 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
2516	igfxEM.exe
2616	igfxEM.exe

Loads dropped DLL 2 IoCs

pid	Process
2516	igfxEM.exe
2616	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/0x0007000000015e4a-22.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2240 set thread context of 2244	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	28
PID 2516 set thread context of 2920	2516	igfxEM.exe	37
PID 2616 set thread context of 2688	2616	igfxEM.exe	41

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
2360	schtasks.exe
2728	schtasks.exe
1996	schtasks.exe
1628	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2244	RegAsm.exe
2244	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2244	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	RegAsm.exe

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2244	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	28
PID 2240 wrote to memory of 2244	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	28
PID 2240 wrote to memory of 2244	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	28
PID 2240 wrote to memory of 2244	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	28
PID 2240 wrote to memory of 2244	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	28
PID 2240 wrote to memory of 2244	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	28
PID 2240 wrote to memory of 2244	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	28
PID 2240 wrote to memory of 2244	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	28
PID 2240 wrote to memory of 2244	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	28
PID 2244 wrote to memory of 2360	2244	RegAsm.exe	29
PID 2244 wrote to memory of 2360	2244	RegAsm.exe	29
PID 2244 wrote to memory of 2360	2244	RegAsm.exe	29
PID 2244 wrote to memory of 2360	2244	RegAsm.exe	29
PID 2240 wrote to memory of 2728	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	33
PID 2240 wrote to memory of 2728	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	33
PID 2240 wrote to memory of 2728	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	33
PID 2240 wrote to memory of 2728	2240	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	33
PID 2444 wrote to memory of 2516	2444	taskeng.exe	36
PID 2444 wrote to memory of 2516	2444	taskeng.exe	36
PID 2444 wrote to memory of 2516	2444	taskeng.exe	36
PID 2444 wrote to memory of 2516	2444	taskeng.exe	36
PID 2516 wrote to memory of 2920	2516	igfxEM.exe	37
PID 2516 wrote to memory of 2920	2516	igfxEM.exe	37
PID 2516 wrote to memory of 2920	2516	igfxEM.exe	37
PID 2516 wrote to memory of 2920	2516	igfxEM.exe	37
PID 2516 wrote to memory of 2920	2516	igfxEM.exe	37
PID 2516 wrote to memory of 2920	2516	igfxEM.exe	37
PID 2516 wrote to memory of 2920	2516	igfxEM.exe	37
PID 2516 wrote to memory of 2920	2516	igfxEM.exe	37
PID 2516 wrote to memory of 2920	2516	igfxEM.exe	37
PID 2516 wrote to memory of 1996	2516	igfxEM.exe	38
PID 2516 wrote to memory of 1996	2516	igfxEM.exe	38
PID 2516 wrote to memory of 1996	2516	igfxEM.exe	38
PID 2516 wrote to memory of 1996	2516	igfxEM.exe	38
PID 2444 wrote to memory of 2616	2444	taskeng.exe	40
PID 2444 wrote to memory of 2616	2444	taskeng.exe	40
PID 2444 wrote to memory of 2616	2444	taskeng.exe	40
PID 2444 wrote to memory of 2616	2444	taskeng.exe	40
PID 2616 wrote to memory of 2688	2616	igfxEM.exe	41
PID 2616 wrote to memory of 2688	2616	igfxEM.exe	41
PID 2616 wrote to memory of 2688	2616	igfxEM.exe	41
PID 2616 wrote to memory of 2688	2616	igfxEM.exe	41
PID 2616 wrote to memory of 2688	2616	igfxEM.exe	41
PID 2616 wrote to memory of 2688	2616	igfxEM.exe	41
PID 2616 wrote to memory of 2688	2616	igfxEM.exe	41
PID 2616 wrote to memory of 2688	2616	igfxEM.exe	41
PID 2616 wrote to memory of 2688	2616	igfxEM.exe	41
PID 2616 wrote to memory of 1628	2616	igfxEM.exe	42
PID 2616 wrote to memory of 1628	2616	igfxEM.exe	42
PID 2616 wrote to memory of 1628	2616	igfxEM.exe	42
PID 2616 wrote to memory of 1628	2616	igfxEM.exe	42

C:\Users\Admin\AppData\Local\Temp\34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe
"C:\Users\Admin\AppData\Local\Temp\34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2240
- 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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2244
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "LAN Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB329.tmp"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2360
- 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⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2728

C:\Windows\system32\taskeng.exe
taskeng.exe {C93D5252-DEC8-44BB-9A98-4C0ECC60370D} S-1-5-21-3434294380-2554721341-1919518612-1000:ELZYPTFV\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Users\Admin\WinSAT\igfxEM.exe
  C:\Users\Admin\WinSAT\igfxEM.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    PID:2920
- - 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⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1996
- C:\Users\Admin\WinSAT\igfxEM.exe
  C:\Users\Admin\WinSAT\igfxEM.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2616
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    PID:2688
- - 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⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1628

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB329.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

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

Filesize
1.4MB

MD5
8ed4871262e8a3ff91da0002c88bf46a

SHA1
64dbff7785c0a31aa1da79bef6d3f009b66516b3

SHA256
bfbfd0b2b78aa09a1c9381a50e0e3fae9100c3f32d68b042479fccb5796f3dda

SHA512
8e98401a2f53d88bb8e21219594f66c6624123be787c2947743379e573b8580b2072b2d77cd9959015a8ac5442bae1faf30a17353fa24715868b7dd6fddd0ccc

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

Filesize
723B

MD5
84e851b247bdc6a16ef6923d9319cf79

SHA1
00ebcd117d1fd9a134aa7a239f4898c4d58820c0

SHA256
01d60e58ade53fba6e75c068f926910de0bc9b0827e6501f5af6dfb6a68ecbac

SHA512
ac6c7eb8e0827fe79b0fa06a2df47c2c4fc0ded8c7718d31cb3a33d38511e87ab17d764549c806f29263e5fd1fc8160faff1dedd1e67e3e8fb8178391bb918d6

Download Submit
memory/2240-0-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/2244-11-0x00000000748D2000-0x00000000748D4000-memory.dmp

Filesize
8KB

Download
memory/2244-3-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download
memory/2244-9-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download
memory/2244-10-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download
memory/2244-16-0x00000000748D0000-0x0000000074E7B000-memory.dmp

Filesize
5.7MB

Download
memory/2244-20-0x00000000748D2000-0x00000000748D4000-memory.dmp

Filesize
8KB

Download
memory/2244-21-0x00000000748D0000-0x0000000074E7B000-memory.dmp

Filesize
5.7MB

Download
memory/2244-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2244-2-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download