nanocore | 2b3d9897c4e056d862c5bd923d587baca895a1f43023ec3700ec9d1113c35d91

General

Target

image0098.exe
Size

422KB
MD5

c9688049153282aa7cb58296f86b21c1
SHA1

6c94c1304d4e33cc2a91af9c0611d4882b433b8c
SHA256

2b3d9897c4e056d862c5bd923d587baca895a1f43023ec3700ec9d1113c35d91
SHA512

d82e5136ac52dd32399efb68e9181da33cd427defb30cb553d6abb1f2d914dae7ba44bed7f969b1cc686e50d4670f20270d54b342535757fa6ee9f62b05a5fd4

Score

10^/10

evasion trojan keylogger stealer spyware nanocore persistence

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

79.134.225.5:1761

Mutex

2a10df69-15a3-46a2-85ad-98d8b06b12ce

Attributes

activate_away_mode
true
backup_connection_host
79.134.225.5
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-04-08T15:28:03.734301436Z
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
1761
default_group
79.134.225.5
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
2a10df69-15a3-46a2-85ad-98d8b06b12ce
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
79.134.225.5
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

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

image0098.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WAN Subsystem = "C:\\Program Files (x86)\\WAN Subsystem\\wanss.exe"	image0098.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

image0098.exe

description pid process target process

PID 1440 set thread context of 1000 1440 image0098.exe image0098.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

image0098.exe

description pid process

Token: SeDebugPrivilege 1000 image0098.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

image0098.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA image0098.exe

description	pid	process	target process
PID 1440 set thread context of 1000	1440	image0098.exe	image0098.exe

description	pid	process
Token: SeDebugPrivilege	1000	image0098.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	image0098.exe

Drops file in Program Files directory 2 IoCs

Processes:

image0098.exe

description	ioc	process
File created	C:\Program Files (x86)\WAN Subsystem\wanss.exe	image0098.exe
File opened for modification	C:\Program Files (x86)\WAN Subsystem\wanss.exe	image0098.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

Processes:

resource	yara_rule
behavioral1/memory/1000-2-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral1/memory/1000-4-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral1/memory/1000-6-0x0000000000400000-0x000000000047F000-memory.dmp	upx

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1060 schtasks.exe
1504 schtasks.exe
Drops startup file 1 IoCs

Processes:

notepad.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\image_00478.vbs notepad.exe
NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

pid	process
1060	schtasks.exe
1504	schtasks.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\image_00478.vbs	notepad.exe

Suspicious behavior: EnumeratesProcesses 1238 IoCs

Processes:

image0098.exeimage0098.exeimage0098.exe

pid	process
1440	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1000	image0098.exe
1000	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1000	image0098.exe
1000	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe
1620	image0098.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

image0098.exeimage0098.exe

description	pid	process	target process
PID 1440 wrote to memory of 1564	1440	image0098.exe	notepad.exe
PID 1440 wrote to memory of 1564	1440	image0098.exe	notepad.exe
PID 1440 wrote to memory of 1564	1440	image0098.exe	notepad.exe
PID 1440 wrote to memory of 1564	1440	image0098.exe	notepad.exe
PID 1440 wrote to memory of 1564	1440	image0098.exe	notepad.exe
PID 1440 wrote to memory of 1564	1440	image0098.exe	notepad.exe
PID 1440 wrote to memory of 1000	1440	image0098.exe	image0098.exe
PID 1440 wrote to memory of 1000	1440	image0098.exe	image0098.exe
PID 1440 wrote to memory of 1000	1440	image0098.exe	image0098.exe
PID 1440 wrote to memory of 1000	1440	image0098.exe	image0098.exe
PID 1440 wrote to memory of 1620	1440	image0098.exe	image0098.exe
PID 1440 wrote to memory of 1620	1440	image0098.exe	image0098.exe
PID 1440 wrote to memory of 1620	1440	image0098.exe	image0098.exe
PID 1440 wrote to memory of 1620	1440	image0098.exe	image0098.exe
PID 1000 wrote to memory of 1060	1000	image0098.exe	schtasks.exe
PID 1000 wrote to memory of 1060	1000	image0098.exe	schtasks.exe
PID 1000 wrote to memory of 1060	1000	image0098.exe	schtasks.exe
PID 1000 wrote to memory of 1060	1000	image0098.exe	schtasks.exe
PID 1000 wrote to memory of 1504	1000	image0098.exe	schtasks.exe
PID 1000 wrote to memory of 1504	1000	image0098.exe	schtasks.exe
PID 1000 wrote to memory of 1504	1000	image0098.exe	schtasks.exe
PID 1000 wrote to memory of 1504	1000	image0098.exe	schtasks.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

image0098.exe

pid process

1440 image0098.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

image0098.exe

pid process

1000 image0098.exe

pid	process
1000	image0098.exe

C:\Users\Admin\AppData\Local\Temp\image0098.exe
"C:\Users\Admin\AppData\Local\Temp\image0098.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious behavior: MapViewOfSection
PID:1440

C:\Windows\SysWOW64\notepad.exe
"C:\Windows\system32\notepad.exe"
2⤵
- Drops startup file
PID:1564

C:\Users\Admin\AppData\Local\Temp\image0098.exe
"C:\Users\Admin\AppData\Local\Temp\image0098.exe"
2⤵
- Adds Run entry to start application
- Suspicious use of AdjustPrivilegeToken
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious behavior: GetForegroundWindowSpam
PID:1000

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "WAN Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4F95.tmp"
3⤵
- Creates scheduled task(s)
PID:1060

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "WAN Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp50CE.tmp"
3⤵
- Creates scheduled task(s)
PID:1504

C:\Users\Admin\AppData\Local\Temp\image0098.exe
"C:\Users\Admin\AppData\Local\Temp\image0098.exe" 2 1000 84926
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:1620

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

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4F95.tmp

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp50CE.tmp

Download Submit
memory/1000-6-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1000-3-0x000000000047D710-mapping.dmp

Download
memory/1000-4-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1000-7-0x0000000001C10000-0x0000000001C48000-memory.dmp

Filesize
224KB

Download
memory/1000-8-0x0000000001C72000-0x0000000001C73000-memory.dmp

Filesize
4KB

Download
memory/1000-9-0x00000000003A0000-0x00000000003D3000-memory.dmp

Filesize
204KB

Download
memory/1000-2-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1060-11-0x0000000000000000-mapping.dmp

Download
memory/1504-13-0x0000000000000000-mapping.dmp

Download
memory/1564-0-0x0000000000000000-mapping.dmp

Download
memory/1564-1-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1620-5-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads