nanocore | 0f16edd83d20fd6f3919eb95be613a515548de4d5b1785d056b119ef26598c33

General

Target

reciept,pdf.exe
Size

433KB
MD5

583dccf7e7b91fdb4e836e7a8ddb6f2b
SHA1

9afea6cd42317fc15631c4930ba70f5561de0061
SHA256

fd319dbcfcafada38eeb43f81d7f46d3b9067e4dacf535667a12ed992691faea
SHA512

8aa676fbcb80025f16ff549264aa1de72a2a6d21811612853d50c75ae6610cf80ad3fb3841fc51f317f727045f4109d2f746c3af4796f581bb399dc734a15f7a

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

megida123.ddns.net:9900

Mutex

64aa071e-5b44-426b-ad7e-e6d42b713d32

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-01T17:02:01.784418836Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
9900
default_group
00000
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
64aa071e-5b44-426b-ad7e-e6d42b713d32
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
megida123.ddns.net
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
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:

reciept,pdf.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

MSBuild.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\DSL Service = "C:\\Program Files (x86)\\DSL Service\\dslsvc.exe"	MSBuild.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:

reciept,pdf.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

reciept,pdf.exe

description pid process target process

PID 1644 set thread context of 1268 1644 reciept,pdf.exe MSBuild.exe

description	pid	process	target process
PID 1644 set thread context of 1268	1644	reciept,pdf.exe	MSBuild.exe

Drops file in Program Files directory 2 IoCs

Processes:

MSBuild.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\DSL Service\dslsvc.exe	MSBuild.exe
File created	C:\Program Files (x86)\DSL Service\dslsvc.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

2012 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

reciept,pdf.exeMSBuild.exe

pid process

1644 reciept,pdf.exe
1268 MSBuild.exe
1268 MSBuild.exe
1268 MSBuild.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

MSBuild.exe

pid process

1268 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

reciept,pdf.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1644 reciept,pdf.exe
Token: SeDebugPrivilege 1268 MSBuild.exe

pid	process
2012	schtasks.exe

pid	process
1644	reciept,pdf.exe
1268	MSBuild.exe
1268	MSBuild.exe
1268	MSBuild.exe

pid	process
1268	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1644	reciept,pdf.exe
Token: SeDebugPrivilege	1268	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

reciept,pdf.exe

description	pid	process	target process
PID 1644 wrote to memory of 2012	1644	reciept,pdf.exe	schtasks.exe
PID 1644 wrote to memory of 2012	1644	reciept,pdf.exe	schtasks.exe
PID 1644 wrote to memory of 2012	1644	reciept,pdf.exe	schtasks.exe
PID 1644 wrote to memory of 2012	1644	reciept,pdf.exe	schtasks.exe
PID 1644 wrote to memory of 1268	1644	reciept,pdf.exe	MSBuild.exe
PID 1644 wrote to memory of 1268	1644	reciept,pdf.exe	MSBuild.exe
PID 1644 wrote to memory of 1268	1644	reciept,pdf.exe	MSBuild.exe
PID 1644 wrote to memory of 1268	1644	reciept,pdf.exe	MSBuild.exe
PID 1644 wrote to memory of 1268	1644	reciept,pdf.exe	MSBuild.exe
PID 1644 wrote to memory of 1268	1644	reciept,pdf.exe	MSBuild.exe
PID 1644 wrote to memory of 1268	1644	reciept,pdf.exe	MSBuild.exe
PID 1644 wrote to memory of 1268	1644	reciept,pdf.exe	MSBuild.exe
PID 1644 wrote to memory of 1268	1644	reciept,pdf.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\reciept,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\reciept,pdf.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:1644

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qrfTTNaN" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEBC6.tmp"
2⤵
- Creates scheduled task(s)
PID:2012

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"{path}"
2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1268

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

Virtualization/Sandbox Evasion

2

T1497

Modify Registry

1

T1112

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpEBC6.tmp
Filesize
1KB

MD5
ce89942cea00f86d48e9f0522513b253

SHA1
aa7493b7089666aa6b4353d74a5fabeac13d925b

SHA256
3ffd3e49e06b08443e962046f811f67a663e98c2ba33693abecf6490f24507e3

SHA512
66407faa9ea27dfc386f33605e4878b63c463c50087a1e710bb40200b3d0738dcc9fc29262fac648d7e20837043328dc6619cb4a02d0aa08a8b05de99125ab63

Download Submit
memory/1268-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1268-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1268-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1268-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1268-58-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1268-65-0x000000000041E792-mapping.dmp

Download
memory/1268-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1268-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1268-71-0x0000000074A70000-0x000000007501B000-memory.dmp

Filesize
5.7MB

Download
memory/1268-72-0x00000000021C6000-0x00000000021D7000-memory.dmp

Filesize
68KB

Download
memory/1644-55-0x0000000074A70000-0x000000007501B000-memory.dmp

Filesize
5.7MB

Download
memory/1644-54-0x0000000076781000-0x0000000076783000-memory.dmp

Filesize
8KB

Download
memory/2012-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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