nanocore | de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c

Analysis

max time kernel
137s
max time network
153s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
05/08/2024, 04:08

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General

Target
de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe
Size 1.2MB
Sample240805-eqebdszhld
SHA256 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c
MD5 39b7639f440ec68a954046a6fda9b6d5
SHA1 065098afde37c1608d1a1f148ce6e24ede754b7f
SHA512 d4de72afece2deaaf2396e5ad1a4751ae2f8b3c61c3cf887915e1cb13a4a3ddf8a3ece9aaf23cc6f992da3a35583c5109fae077b6a7627d78c8f51acf777059d
SSDEEP 24576:XAHnh+eWsN3skA4RV1Hom2KXMmHatoI3fr6j2/2+n/a5y:Kh+ZkldoPK8YatoMYy
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

213.184.126.143:1993

Mutex

023e0719-23ff-48a0-a14a-16f92fea10e1

Attributes

activate_away_mode
true
backup_connection_host
213.184.126.143
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-01-21T14:43:07.916268436Z
bypass_user_account_control
false
bypass_user_account_control_data
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1993
default_group
isreal
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
023e0719-23ff-48a0-a14a-16f92fea10e1
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
213.184.126.143
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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.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\SMTP Monitor = "C:\\Program Files (x86)\\SMTP Monitor\\smtpmon.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2056 set thread context of 2884	2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe	29

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SMTP Monitor\smtpmon.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\SMTP Monitor\smtpmon.exe	RegAsm.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2920	schtasks.exe
2716	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2884	RegAsm.exe
2884	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2884	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2884	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe
2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe
2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe
2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe
2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2056 wrote to memory of 2884	2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe	29
PID 2056 wrote to memory of 2884	2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe	29
PID 2056 wrote to memory of 2884	2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe	29
PID 2056 wrote to memory of 2884	2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe	29
PID 2056 wrote to memory of 2884	2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe	29
PID 2056 wrote to memory of 2884	2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe	29
PID 2056 wrote to memory of 2884	2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe	29
PID 2056 wrote to memory of 2884	2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe	29
PID 2056 wrote to memory of 2884	2056	de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe	29
PID 2884 wrote to memory of 2920	2884	RegAsm.exe	30
PID 2884 wrote to memory of 2920	2884	RegAsm.exe	30
PID 2884 wrote to memory of 2920	2884	RegAsm.exe	30
PID 2884 wrote to memory of 2920	2884	RegAsm.exe	30
PID 2884 wrote to memory of 2716	2884	RegAsm.exe	32
PID 2884 wrote to memory of 2716	2884	RegAsm.exe	32
PID 2884 wrote to memory of 2716	2884	RegAsm.exe	32
PID 2884 wrote to memory of 2716	2884	RegAsm.exe	32

C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe
"C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2056
- 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:2884
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SMTP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB1A3.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2920
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SMTP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB2CC.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2716

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

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

tmpB1A3.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpB1A3.tmp
Size 1KB
SHA256 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
MD5 c6f0625bf4c1cdfb699980c9243d3b22
SHA1 43de1fe580576935516327f17b5da0c656c72851
SHA512 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
MD5 SHA1 SHA512

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tmpB2CC.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpB2CC.tmp
Size 1KB
SHA256 1e45d509d390405f93e9f3b64ff497e61cf9bf791c015dde4499184b7a681eb3
MD5 ffa9e95100598072ca693c672478895f
SHA1 518514c3112c51b2b21d36d3262bec72e83d025d
SHA512 010d14ae46a23cef14cf1de9a06c8e6ff26ca86c10ebdd3d5f16f4ffbeacc3df7ca18fafda097e00bf747fb997c5c4f9d62646e47a3b501da7c630689c28d6df
MD5 SHA1 SHA512

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memory/2056-0-0x00000000005E0000-0x00000000005E1000-memory.dmp

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memory/2884-1-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2884-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2884-9-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2884-8-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2884-2-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2884-10-0x0000000073BD2000-0x0000000073BD4000-memory.dmp

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memory/2884-21-0x0000000073BD2000-0x0000000073BD4000-memory.dmp

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