nanocore | b7166b77936bce0bd2b4d6402ca51452d084f5bfbbc7d63932bfdc92defd3cf6

General

Target

YSTGKBGE.exe
Size

661KB
MD5

7722927e924e2784f1556197cbf99bcb
SHA1

fde1deda50894f033953d60489a4b7cf419f32ff
SHA256

6eb10ca3e8026756f417b8e04510f768c28175817c73be8f21514dfb186d687f
SHA512

0674e6a5b237bcffb210c35f310cd1784b281605e8f46570e6d8ec5d1058dc340a41284a8e10d7a3facda6aa64c1b2e47f27163b5e277d8f6c88e21377fbee5c

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.165.153.236:9083

godrich.duckdns.org:9083

Mutex

495a693f-d1ae-480b-91e7-a8acbdb4f6e1

Attributes

activate_away_mode
true
backup_connection_host
godrich.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-05-11T14:46:19.792031136Z
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
9083
default_group
reciept
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
495a693f-d1ae-480b-91e7-a8acbdb4f6e1
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
185.165.153.236
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

YSTGKBGE.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	YSTGKBGE.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

YSTGKBGE.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Service = "C:\\Program Files (x86)\\TCP Service\\tcpsvc.exe"	YSTGKBGE.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

YSTGKBGE.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA YSTGKBGE.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

YSTGKBGE.exe

description pid process target process

PID 2888 set thread context of 2464 2888 YSTGKBGE.exe YSTGKBGE.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	YSTGKBGE.exe

description	pid	process	target process
PID 2888 set thread context of 2464	2888	YSTGKBGE.exe	YSTGKBGE.exe

Drops file in Program Files directory 2 IoCs

Processes:

YSTGKBGE.exe

description	ioc	process
File created	C:\Program Files (x86)\TCP Service\tcpsvc.exe	YSTGKBGE.exe
File opened for modification	C:\Program Files (x86)\TCP Service\tcpsvc.exe	YSTGKBGE.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exeschtasks.exe

pid process

3540 schtasks.exe
2232 schtasks.exe
3708 schtasks.exe

pid	process
3540	schtasks.exe
2232	schtasks.exe
3708	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

YSTGKBGE.exeYSTGKBGE.exe

pid	process
2888	YSTGKBGE.exe
2888	YSTGKBGE.exe
2888	YSTGKBGE.exe
2888	YSTGKBGE.exe
2888	YSTGKBGE.exe
2888	YSTGKBGE.exe
2464	YSTGKBGE.exe
2464	YSTGKBGE.exe
2464	YSTGKBGE.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

YSTGKBGE.exe

pid process

2464 YSTGKBGE.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

YSTGKBGE.exeYSTGKBGE.exe

description pid process

Token: SeDebugPrivilege 2888 YSTGKBGE.exe
Token: SeDebugPrivilege 2464 YSTGKBGE.exe

pid	process
2464	YSTGKBGE.exe

description	pid	process
Token: SeDebugPrivilege	2888	YSTGKBGE.exe
Token: SeDebugPrivilege	2464	YSTGKBGE.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

YSTGKBGE.exeYSTGKBGE.exe

description	pid	process	target process
PID 2888 wrote to memory of 3540	2888	YSTGKBGE.exe	schtasks.exe
PID 2888 wrote to memory of 3540	2888	YSTGKBGE.exe	schtasks.exe
PID 2888 wrote to memory of 3540	2888	YSTGKBGE.exe	schtasks.exe
PID 2888 wrote to memory of 2464	2888	YSTGKBGE.exe	YSTGKBGE.exe
PID 2888 wrote to memory of 2464	2888	YSTGKBGE.exe	YSTGKBGE.exe
PID 2888 wrote to memory of 2464	2888	YSTGKBGE.exe	YSTGKBGE.exe
PID 2888 wrote to memory of 2464	2888	YSTGKBGE.exe	YSTGKBGE.exe
PID 2888 wrote to memory of 2464	2888	YSTGKBGE.exe	YSTGKBGE.exe
PID 2888 wrote to memory of 2464	2888	YSTGKBGE.exe	YSTGKBGE.exe
PID 2888 wrote to memory of 2464	2888	YSTGKBGE.exe	YSTGKBGE.exe
PID 2888 wrote to memory of 2464	2888	YSTGKBGE.exe	YSTGKBGE.exe
PID 2464 wrote to memory of 2232	2464	YSTGKBGE.exe	schtasks.exe
PID 2464 wrote to memory of 2232	2464	YSTGKBGE.exe	schtasks.exe
PID 2464 wrote to memory of 2232	2464	YSTGKBGE.exe	schtasks.exe
PID 2464 wrote to memory of 3708	2464	YSTGKBGE.exe	schtasks.exe
PID 2464 wrote to memory of 3708	2464	YSTGKBGE.exe	schtasks.exe
PID 2464 wrote to memory of 3708	2464	YSTGKBGE.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\YSTGKBGE.exe
"C:\Users\Admin\AppData\Local\Temp\YSTGKBGE.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2888

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp344E.tmp"
2⤵
- Creates scheduled task(s)
PID:3540

C:\Users\Admin\AppData\Local\Temp\YSTGKBGE.exe
"{path}"
2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2464

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3C0F.tmp"
3⤵
- Creates scheduled task(s)
PID:2232

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp50D0.tmp"
3⤵
- Creates scheduled task(s)
PID:3708

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\YSTGKBGE.exe.log
Filesize
1KB

MD5
400f1cc1a0a0ce1cdabda365ab3368ce

SHA1
1ecf683f14271d84f3b6063493dce00ff5f42075

SHA256
c8fa64f4b69df13ed6408fd4a204f318a36c2f38c85d4a4d42adfc9173f73765

SHA512
14c8cfd58d097e5e89c8cabe1e665173f1ccf604a9ef70cdcb84116e265f90819c19c891be408e0ad7e29086a5c2ea2883b7a7d1184878dbbac63e2cabcd1c45

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp344E.tmp
Filesize
1KB

MD5
f0194d140d5655b77acfe5c633086ba1

SHA1
8cd43646855f664a0ebcff81adb01c0681a9363e

SHA256
31fb428c38ed87cd3c15ca9020c0dd95120ff487e25a9886be7acf1c7c9c5e46

SHA512
abf16211ad68556400043b1a50b9753bbcdb25e433a1c7bc982afcd3c9bfa48207f063f90130d1f5fe1eb8c335ef06159d9fe740cff7f9e0cb6bca6d8e422a14

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3C0F.tmp
Filesize
1KB

MD5
2f958f19cd463f5b3c3fa172fd053989

SHA1
ffefde6815797eb3dfc046a87fb104ba038582aa

SHA256
a6e9dcfe380f72789afde63464d205ce672b29a0e8d0e8d1723096b1389a2c95

SHA512
f0baf17c66ed7ec28e3f0b44feb46141a0a1f25d644239256152d80578feb37cb70c910fcedf1e57d486309af654b608f883e71c7f6b9339bade8834e81f2a8f

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp50D0.tmp
Filesize
1KB

MD5
9db6095f31f8b4ae8173fe11424a8dfe

SHA1
4b0655ae95def24a41710ca137649d93bfa49407

SHA256
9911b4513e44521c90c020ddcddea1ddc58095055a72ec638b593bf9ee23aa72

SHA512
5bee977264545a30a2d53e674f54a4066d4529dc9162d46911b9cac957052cdc1ea7c8d60f9c57d3f33db6cb964b1e6bb2347d0e0e2af0a32ac98938c02ffc1c

Download Submit
memory/2232-140-0x0000000000000000-mapping.dmp

Download
memory/2464-137-0x0000000000000000-mapping.dmp

Download
memory/2464-138-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2888-132-0x0000000005050000-0x00000000050E2000-memory.dmp

Filesize
584KB

Download
memory/2888-133-0x0000000005040000-0x000000000504A000-memory.dmp

Filesize
40KB

Download
memory/2888-134-0x0000000008880000-0x000000000891C000-memory.dmp

Filesize
624KB

Download
memory/2888-130-0x0000000000240000-0x00000000002EC000-memory.dmp

Filesize
688KB

Download
memory/2888-131-0x0000000005460000-0x0000000005A04000-memory.dmp

Filesize
5.6MB

Download
memory/3540-135-0x0000000000000000-mapping.dmp

Download
memory/3708-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads