nanocore | ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e

General

Target

ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe
Size

1.4MB
MD5

db72711dd12e10fcfe2b7f86557c1ee1
SHA1

073ac7c915f778ab41ac1be2950b3b8121d7003d
SHA256

ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e
SHA512

1e2cc93f07eca93fa55f1de7deef933bace3789e4dd7e5eedcaaea212723749e8d763d5c1d282e355d2230b49765b5eae421f06159a6ba880cae0fb3e0c98760
SSDEEP

24576:6AHnh+eWsN3skA4RV1Hom2KXMmHaYDBNkmBRGEMdSR5ADIAsG/jJ45z:Nh+ZkldoPK8YaZSeIAmz

Score

10^/10

nanocore discovery evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

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
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
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 2 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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	igfxEM.exe

Executes dropped EXE 2 IoCs

pid	Process
4656	igfxEM.exe
1332	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/0x00070000000233e3-19.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2536 set thread context of 3568	2536	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe	87
PID 4656 set thread context of 2424	4656	igfxEM.exe	102
PID 1332 set thread context of 2520	1332	igfxEM.exe	106

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 9 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	igfxEM.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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.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 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1044	schtasks.exe
1888	schtasks.exe
4876	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3568	RegAsm.exe
3568	RegAsm.exe
3568	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3568	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3568	RegAsm.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 3568	2536	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe	87
PID 2536 wrote to memory of 3568	2536	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe	87
PID 2536 wrote to memory of 3568	2536	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe	87
PID 2536 wrote to memory of 3568	2536	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe	87
PID 2536 wrote to memory of 3568	2536	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe	87
PID 3568 wrote to memory of 1044	3568	RegAsm.exe	88
PID 3568 wrote to memory of 1044	3568	RegAsm.exe	88
PID 3568 wrote to memory of 1044	3568	RegAsm.exe	88
PID 2536 wrote to memory of 1888	2536	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe	94
PID 2536 wrote to memory of 1888	2536	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe	94
PID 2536 wrote to memory of 1888	2536	ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe	94
PID 4656 wrote to memory of 2424	4656	igfxEM.exe	102
PID 4656 wrote to memory of 2424	4656	igfxEM.exe	102
PID 4656 wrote to memory of 2424	4656	igfxEM.exe	102
PID 4656 wrote to memory of 2424	4656	igfxEM.exe	102
PID 4656 wrote to memory of 2424	4656	igfxEM.exe	102
PID 4656 wrote to memory of 4876	4656	igfxEM.exe	103
PID 4656 wrote to memory of 4876	4656	igfxEM.exe	103
PID 4656 wrote to memory of 4876	4656	igfxEM.exe	103
PID 1332 wrote to memory of 2520	1332	igfxEM.exe	106
PID 1332 wrote to memory of 2520	1332	igfxEM.exe	106
PID 1332 wrote to memory of 2520	1332	igfxEM.exe	106
PID 1332 wrote to memory of 2520	1332	igfxEM.exe	106
PID 1332 wrote to memory of 2520	1332	igfxEM.exe	106

C:\Users\Admin\AppData\Local\Temp\ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe
"C:\Users\Admin\AppData\Local\Temp\ea298acdc3b2a9a2e60049398c4afe5c95e9daffc7b2fc3cd43d97190cd6d49e.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2536
- 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:3568
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp855C.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1044
- 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:1888

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:4656
- 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:2424
- 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:4876

C:\Users\Admin\WinSAT\igfxEM.exe
C:\Users\Admin\WinSAT\igfxEM.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1332
- 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:2520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

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\tmp855C.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

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

Filesize
1.4MB

MD5
6ab18e4dfa8e969df88dded7465b660a

SHA1
2d630148c7c7b90c680488481e5f8d1c6167ecd0

SHA256
b70ef890583aa9159fc23201e2fc9db1696932489b8dd7d5e527a251b7251477

SHA512
1f6882716a234dd7265dabc51a366e47644289adc6897ec9af36ce1388461fda7d6d8866e65974ed54d048938555ea18ff7367320a8d14e338715c7b664f7da6

Download Submit
memory/2424-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2520-30-0x0000000000580000-0x00000000005B8000-memory.dmp

Filesize
224KB

Download
memory/2536-0-0x0000000001090000-0x0000000001091000-memory.dmp

Filesize
4KB

Download
memory/3568-7-0x0000000073B50000-0x0000000074101000-memory.dmp

Filesize
5.7MB

Download
memory/3568-15-0x0000000073B50000-0x0000000074101000-memory.dmp

Filesize
5.7MB

Download
memory/3568-14-0x0000000073B50000-0x0000000074101000-memory.dmp

Filesize
5.7MB

Download
memory/3568-13-0x0000000073B52000-0x0000000073B53000-memory.dmp

Filesize
4KB

Download
memory/3568-8-0x0000000073B50000-0x0000000074101000-memory.dmp

Filesize
5.7MB

Download
memory/3568-6-0x0000000073B52000-0x0000000073B53000-memory.dmp

Filesize
4KB

Download
memory/3568-2-0x00000000005A0000-0x00000000005D8000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads