nanocore | 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-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

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-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation	igfxEM.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation	igfxEM.exe

Executes dropped EXE 2 IoCs

pid	Process
3224	igfxEM.exe
1732	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/0x00080000000234b7-18.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 808 set thread context of 4632	808	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	83
PID 3224 set thread context of 5076	3224	igfxEM.exe	90
PID 1732 set thread context of 2504	1732	igfxEM.exe	94

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
2552	schtasks.exe
3908	schtasks.exe
4376	schtasks.exe
2024	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4632	RegAsm.exe
4632	RegAsm.exe
4632	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4632	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4632	RegAsm.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 808 wrote to memory of 4632	808	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	83
PID 808 wrote to memory of 4632	808	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	83
PID 808 wrote to memory of 4632	808	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	83
PID 808 wrote to memory of 4632	808	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	83
PID 808 wrote to memory of 4632	808	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	83
PID 4632 wrote to memory of 2552	4632	RegAsm.exe	84
PID 4632 wrote to memory of 2552	4632	RegAsm.exe	84
PID 4632 wrote to memory of 2552	4632	RegAsm.exe	84
PID 808 wrote to memory of 3908	808	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	86
PID 808 wrote to memory of 3908	808	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	86
PID 808 wrote to memory of 3908	808	34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe	86
PID 3224 wrote to memory of 5076	3224	igfxEM.exe	90
PID 3224 wrote to memory of 5076	3224	igfxEM.exe	90
PID 3224 wrote to memory of 5076	3224	igfxEM.exe	90
PID 3224 wrote to memory of 5076	3224	igfxEM.exe	90
PID 3224 wrote to memory of 5076	3224	igfxEM.exe	90
PID 3224 wrote to memory of 4376	3224	igfxEM.exe	91
PID 3224 wrote to memory of 4376	3224	igfxEM.exe	91
PID 3224 wrote to memory of 4376	3224	igfxEM.exe	91
PID 1732 wrote to memory of 2504	1732	igfxEM.exe	94
PID 1732 wrote to memory of 2504	1732	igfxEM.exe	94
PID 1732 wrote to memory of 2504	1732	igfxEM.exe	94
PID 1732 wrote to memory of 2504	1732	igfxEM.exe	94
PID 1732 wrote to memory of 2504	1732	igfxEM.exe	94
PID 1732 wrote to memory of 2024	1732	igfxEM.exe	95
PID 1732 wrote to memory of 2024	1732	igfxEM.exe	95
PID 1732 wrote to memory of 2024	1732	igfxEM.exe	95

C:\Users\Admin\AppData\Local\Temp\34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe
"C:\Users\Admin\AppData\Local\Temp\34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:808
- 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:4632
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "NAT Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB045.tmp"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2552
- 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:3908

C:\Users\Admin\WinSAT\igfxEM.exe
C:\Users\Admin\WinSAT\igfxEM.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3224
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:5076
- 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:4376

C:\Users\Admin\WinSAT\igfxEM.exe
C:\Users\Admin\WinSAT\igfxEM.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:2504
- 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:2024

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

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\tmpB045.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

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

Filesize
1.4MB

MD5
424140d255beaade0da647ee8837d374

SHA1
06be808895b33fc4ca04b37b1086376f5af03434

SHA256
9ce0bb6224c26793d2e111bfdb45955f09bdf0009167c81d7c01f45a9d632f2f

SHA512
e02c9e78a5a82c5dfcb2ee904dda019a219abdc73132335661d81b123cdaba75676a234662298a6bb17bb06eeefe2f31dd6c1e3ce02c60e1e918da7a745d5bf1

Download Submit
memory/808-5-0x0000000003FE0000-0x0000000003FE1000-memory.dmp

Filesize
4KB

Download
memory/4632-1-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4632-6-0x0000000073582000-0x0000000073583000-memory.dmp

Filesize
4KB

Download
memory/4632-7-0x0000000073580000-0x0000000073B31000-memory.dmp

Filesize
5.7MB

Download
memory/4632-8-0x0000000073580000-0x0000000073B31000-memory.dmp

Filesize
5.7MB

Download
memory/4632-16-0x0000000073582000-0x0000000073583000-memory.dmp

Filesize
4KB

Download
memory/4632-17-0x0000000073580000-0x0000000073B31000-memory.dmp

Filesize
5.7MB

Download