nanocore | 405451a0d246bb8788fcaec9c3db727a6c2e2b6a01ce77216cf27464825f6937

General

Target

Folha de dados de cotação para nossa empresa doc.exe
Size

384KB
MD5

4f6289f38c2e4b763aeb64c42b0baaa9
SHA1

b7b2718783a2a286aa6f79ec72ce07f4ac550c24
SHA256

bbb434180f465363ccad24124ff5a3f326d994952fe1146c8d7b7a32bf3319f3
SHA512

c3476055ba0d33125553cd85a99bef91636a1d368c0bc03c884a8fd19d991a9d0fb58dc5e9a68f4678c091dfac4444448c3adf8e8b56eb994591847f548dabba

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

24thmatch2020.duckdns.org:5626

127.0.0.1:5626

Mutex

1d5c6dc1-3b0f-4759-9757-c47b26dc4c4d

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-04-05T07:10:58.206265736Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
5626
default_group
24thMarch
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
1d5c6dc1-3b0f-4759-9757-c47b26dc4c4d
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
24thmatch2020.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
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:

Folha de dados de cotação para nossa empresa doc.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Folha de dados de cotação para nossa empresa doc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Folha de dados de cotação para nossa empresa doc.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:

Folha de dados de cotação para nossa empresa doc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Folha de dados de cotação para nossa empresa doc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Folha de dados de cotação para nossa empresa doc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Folha de dados de cotação para nossa empresa doc.exe

description pid process target process

PID 1380 set thread context of 520 1380 Folha de dados de cotação para nossa empresa doc.exe MSBuild.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

1872 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

MSBuild.exe

pid process

520 MSBuild.exe
520 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 520 MSBuild.exe

description	pid	process	target process
PID 1380 set thread context of 520	1380	Folha de dados de cotação para nossa empresa doc.exe	MSBuild.exe

pid	process
1872	schtasks.exe

pid	process
520	MSBuild.exe
520	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	520	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Folha de dados de cotação para nossa empresa doc.exe

description	pid	process	target process
PID 1380 wrote to memory of 1872	1380	Folha de dados de cotação para nossa empresa doc.exe	schtasks.exe
PID 1380 wrote to memory of 1872	1380	Folha de dados de cotação para nossa empresa doc.exe	schtasks.exe
PID 1380 wrote to memory of 1872	1380	Folha de dados de cotação para nossa empresa doc.exe	schtasks.exe
PID 1380 wrote to memory of 1872	1380	Folha de dados de cotação para nossa empresa doc.exe	schtasks.exe
PID 1380 wrote to memory of 520	1380	Folha de dados de cotação para nossa empresa doc.exe	MSBuild.exe
PID 1380 wrote to memory of 520	1380	Folha de dados de cotação para nossa empresa doc.exe	MSBuild.exe
PID 1380 wrote to memory of 520	1380	Folha de dados de cotação para nossa empresa doc.exe	MSBuild.exe
PID 1380 wrote to memory of 520	1380	Folha de dados de cotação para nossa empresa doc.exe	MSBuild.exe
PID 1380 wrote to memory of 520	1380	Folha de dados de cotação para nossa empresa doc.exe	MSBuild.exe
PID 1380 wrote to memory of 520	1380	Folha de dados de cotação para nossa empresa doc.exe	MSBuild.exe
PID 1380 wrote to memory of 520	1380	Folha de dados de cotação para nossa empresa doc.exe	MSBuild.exe
PID 1380 wrote to memory of 520	1380	Folha de dados de cotação para nossa empresa doc.exe	MSBuild.exe
PID 1380 wrote to memory of 520	1380	Folha de dados de cotação para nossa empresa doc.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\Folha de dados de cotação para nossa empresa doc.exe
"C:\Users\Admin\AppData\Local\Temp\Folha de dados de cotação para nossa empresa doc.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1380

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ixhpELYlqfCTYq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6A29.tmp"
2⤵
- Creates scheduled task(s)
PID:1872

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:520

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

3

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\tmp6A29.tmp
Filesize
1KB

MD5
0159a3cd8890591235a52d77ff551d73

SHA1
44245e44bb6d41000c16587b06cd1bd54f2cf666

SHA256
a9a4e68b2919c6579c8a011287acbdf226d4cc44b5067706373929768db80d1e

SHA512
9f1a44665e0162a2498c08a5c223a8a0fbf16745623cde1fd1c458937855c5f63effeea4298742c3cb50682e653753ad7b74cc0633108a2e393b4261901eae56

Download Submit
memory/520-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/520-58-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/520-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/520-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/520-65-0x000000000041E792-mapping.dmp

Download
memory/520-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/520-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/520-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/520-71-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/520-72-0x0000000001E16000-0x0000000001E27000-memory.dmp

Filesize
68KB

Download
memory/1380-55-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/1380-54-0x0000000076C81000-0x0000000076C83000-memory.dmp

Filesize
8KB

Download
memory/1872-56-0x0000000000000000-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