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
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
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

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\ARP Service = "C:\\Program Files (x86)\\ARP Service\\arpsvc.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 892 set thread context of 1148 892 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 892 set thread context of 1148	892	YSTGKBGE.exe	YSTGKBGE.exe

Drops file in Program Files directory 2 IoCs

Processes:

YSTGKBGE.exe

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

1064 schtasks.exe
1056 schtasks.exe
1424 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

YSTGKBGE.exeYSTGKBGE.exe

pid process

892 YSTGKBGE.exe
892 YSTGKBGE.exe
892 YSTGKBGE.exe
892 YSTGKBGE.exe
1148 YSTGKBGE.exe
1148 YSTGKBGE.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

YSTGKBGE.exeYSTGKBGE.exe

description pid process

Token: SeDebugPrivilege 892 YSTGKBGE.exe
Token: SeDebugPrivilege 1148 YSTGKBGE.exe

pid	process
1064	schtasks.exe
1056	schtasks.exe
1424	schtasks.exe

pid	process
892	YSTGKBGE.exe
892	YSTGKBGE.exe
892	YSTGKBGE.exe
892	YSTGKBGE.exe
1148	YSTGKBGE.exe
1148	YSTGKBGE.exe

description	pid	process
Token: SeDebugPrivilege	892	YSTGKBGE.exe
Token: SeDebugPrivilege	1148	YSTGKBGE.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

YSTGKBGE.exeYSTGKBGE.exe

description	pid	process	target process
PID 892 wrote to memory of 1064	892	YSTGKBGE.exe	schtasks.exe
PID 892 wrote to memory of 1064	892	YSTGKBGE.exe	schtasks.exe
PID 892 wrote to memory of 1064	892	YSTGKBGE.exe	schtasks.exe
PID 892 wrote to memory of 1064	892	YSTGKBGE.exe	schtasks.exe
PID 892 wrote to memory of 1148	892	YSTGKBGE.exe	YSTGKBGE.exe
PID 892 wrote to memory of 1148	892	YSTGKBGE.exe	YSTGKBGE.exe
PID 892 wrote to memory of 1148	892	YSTGKBGE.exe	YSTGKBGE.exe
PID 892 wrote to memory of 1148	892	YSTGKBGE.exe	YSTGKBGE.exe
PID 892 wrote to memory of 1148	892	YSTGKBGE.exe	YSTGKBGE.exe
PID 892 wrote to memory of 1148	892	YSTGKBGE.exe	YSTGKBGE.exe
PID 892 wrote to memory of 1148	892	YSTGKBGE.exe	YSTGKBGE.exe
PID 892 wrote to memory of 1148	892	YSTGKBGE.exe	YSTGKBGE.exe
PID 892 wrote to memory of 1148	892	YSTGKBGE.exe	YSTGKBGE.exe
PID 1148 wrote to memory of 1056	1148	YSTGKBGE.exe	schtasks.exe
PID 1148 wrote to memory of 1056	1148	YSTGKBGE.exe	schtasks.exe
PID 1148 wrote to memory of 1056	1148	YSTGKBGE.exe	schtasks.exe
PID 1148 wrote to memory of 1056	1148	YSTGKBGE.exe	schtasks.exe
PID 1148 wrote to memory of 1424	1148	YSTGKBGE.exe	schtasks.exe
PID 1148 wrote to memory of 1424	1148	YSTGKBGE.exe	schtasks.exe
PID 1148 wrote to memory of 1424	1148	YSTGKBGE.exe	schtasks.exe
PID 1148 wrote to memory of 1424	1148	YSTGKBGE.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\YSTGKBGE.exe
"C:\Users\Admin\AppData\Local\Temp\YSTGKBGE.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:892

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAC18.tmp"
2⤵
- Creates scheduled task(s)
PID:1064

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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1148

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "ARP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB01E.tmp"
3⤵
- Creates scheduled task(s)
PID:1056

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "ARP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDB53.tmp"
3⤵
- Creates scheduled task(s)
PID:1424

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

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpAC18.tmp
Filesize
1KB

MD5
dc436ff5b60ef8168376c73a193ed25c

SHA1
0943c8a1a0851b7b79d31fadb488cce2e0444638

SHA256
949ee6cece73e1304479fc963d79d2fd8e6410f451c1ce0ae6fd6e1b40b70705

SHA512
1f66711762ef86444a1e4edd5e3105b2ca5e83ec72bc6c2e04c7b5a9de1f50df3a6a85c75fc54003e4ebb0c9d8061455a6ef2e544726536592fb32dbf99736bd

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB01E.tmp
Filesize
1KB

MD5
2f958f19cd463f5b3c3fa172fd053989

SHA1
ffefde6815797eb3dfc046a87fb104ba038582aa

SHA256
a6e9dcfe380f72789afde63464d205ce672b29a0e8d0e8d1723096b1389a2c95

SHA512
f0baf17c66ed7ec28e3f0b44feb46141a0a1f25d644239256152d80578feb37cb70c910fcedf1e57d486309af654b608f883e71c7f6b9339bade8834e81f2a8f

Download Submit
memory/892-55-0x00000000755C1000-0x00000000755C3000-memory.dmp

Filesize
8KB

Download
memory/892-56-0x0000000000310000-0x000000000031A000-memory.dmp

Filesize
40KB

Download
memory/892-57-0x0000000004940000-0x00000000049AA000-memory.dmp

Filesize
424KB

Download
memory/892-58-0x00000000003C0000-0x0000000000404000-memory.dmp

Filesize
272KB

Download
memory/892-54-0x0000000001220000-0x00000000012CC000-memory.dmp

Filesize
688KB

Download
memory/1056-74-0x0000000000000000-mapping.dmp

Download
memory/1064-59-0x0000000000000000-mapping.dmp

Download
memory/1148-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1148-65-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1148-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1148-68-0x000000000041E792-mapping.dmp

Download
memory/1148-70-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1148-72-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1148-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1148-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1148-77-0x00000000004A0000-0x00000000004AA000-memory.dmp

Filesize
40KB

Download
memory/1148-78-0x00000000004F0000-0x000000000050E000-memory.dmp

Filesize
120KB

Download
memory/1148-79-0x0000000000510000-0x000000000051A000-memory.dmp

Filesize
40KB

Download
memory/1424-76-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads