nanocore | 3ff810efa7cabb7e4c91319244aa19d0460fad2b8500663441c7bff068014067

General

Target

Document.exe
Size

510KB
MD5

c132501f57681f7307e29f080627821d
SHA1

4ff835fb3f9bd774de9c2dcc03d93aa810f6d03b
SHA256

c068b1a7379f95ee883cd4ed9639bb2b28c380934f3bc0e0c7be97ad808c7b8a
SHA512

59d86aed1c171e0a95cd437407a36ddf5a272f151baafd5fb1fbd3d2f01d46c7755192a6e77bac33dc48c80456e403914df6d8c71745badc1161d6785e3bb1c2

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

172.111.188.199:8829

Mutex

ce1d7a43-a4b9-4511-9ddf-1134841f2535

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-02-02T10:25:40.952250336Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
8829
default_group
Billi
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
ce1d7a43-a4b9-4511-9ddf-1134841f2535
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
172.111.188.199
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
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Document.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Document.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Document.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

Document.exe

description ioc process

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

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

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Document.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Document.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Document.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Document.exe

description pid process target process

PID 948 set thread context of 1700 948 Document.exe Document.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 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1740 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Document.exeDocument.exe

pid process

948 Document.exe
948 Document.exe
1700 Document.exe
1700 Document.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Document.exeDocument.exe

description pid process

Token: SeDebugPrivilege 948 Document.exe
Token: SeDebugPrivilege 1700 Document.exe

description	pid	process	target process
PID 948 set thread context of 1700	948	Document.exe	Document.exe

pid	process
1740	schtasks.exe

pid	process
948	Document.exe
948	Document.exe
1700	Document.exe
1700	Document.exe

description	pid	process
Token: SeDebugPrivilege	948	Document.exe
Token: SeDebugPrivilege	1700	Document.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Document.exe

description	pid	process	target process
PID 948 wrote to memory of 1740	948	Document.exe	schtasks.exe
PID 948 wrote to memory of 1740	948	Document.exe	schtasks.exe
PID 948 wrote to memory of 1740	948	Document.exe	schtasks.exe
PID 948 wrote to memory of 1740	948	Document.exe	schtasks.exe
PID 948 wrote to memory of 928	948	Document.exe	Document.exe
PID 948 wrote to memory of 928	948	Document.exe	Document.exe
PID 948 wrote to memory of 928	948	Document.exe	Document.exe
PID 948 wrote to memory of 928	948	Document.exe	Document.exe
PID 948 wrote to memory of 1700	948	Document.exe	Document.exe
PID 948 wrote to memory of 1700	948	Document.exe	Document.exe
PID 948 wrote to memory of 1700	948	Document.exe	Document.exe
PID 948 wrote to memory of 1700	948	Document.exe	Document.exe
PID 948 wrote to memory of 1700	948	Document.exe	Document.exe
PID 948 wrote to memory of 1700	948	Document.exe	Document.exe
PID 948 wrote to memory of 1700	948	Document.exe	Document.exe
PID 948 wrote to memory of 1700	948	Document.exe	Document.exe
PID 948 wrote to memory of 1700	948	Document.exe	Document.exe

C:\Users\Admin\AppData\Local\Temp\Document.exe
"C:\Users\Admin\AppData\Local\Temp\Document.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:948

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WjtGxaO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7D0D.tmp"
2⤵
- Creates scheduled task(s)
PID:1740

C:\Users\Admin\AppData\Local\Temp\Document.exe
"{path}"
2⤵
PID:928

C:\Users\Admin\AppData\Local\Temp\Document.exe
"{path}"
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1700

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

4

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7D0D.tmp
Filesize
1KB

MD5
05860093f35b8309678f3541c6b897a4

SHA1
2d232b99973df9f9ce7d0b9be15a33e7d3624470

SHA256
f9f0901431ef939edb9e856c414de4e6ab3b7511f8f1d4c20e13ead6674662e9

SHA512
dfd9e8be3868596868f47a2e30003fe94ac1a44206b7b933608427a206586cecfa62f2cde0e9291c15dcf8ea235cd14f4884dbcbf3767cece35c79b280f37889

Download Submit
memory/948-55-0x0000000074290000-0x000000007483B000-memory.dmp

Filesize
5.7MB

Download
memory/948-54-0x0000000074F21000-0x0000000074F23000-memory.dmp

Filesize
8KB

Download
memory/1700-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1700-58-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1700-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1700-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1700-65-0x000000000041E792-mapping.dmp

Download
memory/1700-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1700-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1700-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1700-71-0x0000000074290000-0x000000007483B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-56-0x0000000000000000-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