nanocore | f2cfd6e893c39081ea492637867f51b366fc71906a7d37e84d1714fa5e588acf

General

Target

READSUN OPTICAL LTD ORDER_xls.exe
Size

466KB
MD5

077d9c1b49762fd62b8fccf6e5c76b01
SHA1

5f9170601fad6ff3454f098fdd16222d36796981
SHA256

bf0ad956a210613614b06919c4663576b23ed1c415ddd5051ff858c84a1554e4
SHA512

a3a7a5cf38d535f631148e021d3cafe63958d2186e190786a00df1c9e2547aaf41770ddb927390a9fa8027245816fe08c9d4f2c9f9598e87f9c9e469b63ca3f4

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

194.5.98.8:4573

127.0.0.1:4573

Mutex

b53fb692-ee4a-4d43-afbf-f4b9bb6fef38

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-02-08T12:56:34.023183336Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
4573
default_group
JOE
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
b53fb692-ee4a-4d43-afbf-f4b9bb6fef38
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
194.5.98.8
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

Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089
NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

READSUN OPTICAL LTD ORDER_xls.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	READSUN OPTICAL LTD ORDER_xls.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	READSUN OPTICAL LTD ORDER_xls.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

READSUN OPTICAL LTD ORDER_xls.exe

description pid process target process

PID 748 set thread context of 2020 748 READSUN OPTICAL LTD ORDER_xls.exe RegSvcs.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exeRegSvcs.exe

pid process

956 powershell.exe
2020 RegSvcs.exe
2020 RegSvcs.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

2020 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 956 powershell.exe
Token: SeDebugPrivilege 2020 RegSvcs.exe

description	pid	process	target process
PID 748 set thread context of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe

pid	process
956	powershell.exe
2020	RegSvcs.exe
2020	RegSvcs.exe

pid	process
2020	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	956	powershell.exe
Token: SeDebugPrivilege	2020	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

READSUN OPTICAL LTD ORDER_xls.exe

description	pid	process	target process
PID 748 wrote to memory of 956	748	READSUN OPTICAL LTD ORDER_xls.exe	powershell.exe
PID 748 wrote to memory of 956	748	READSUN OPTICAL LTD ORDER_xls.exe	powershell.exe
PID 748 wrote to memory of 956	748	READSUN OPTICAL LTD ORDER_xls.exe	powershell.exe
PID 748 wrote to memory of 956	748	READSUN OPTICAL LTD ORDER_xls.exe	powershell.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe
PID 748 wrote to memory of 2020	748	READSUN OPTICAL LTD ORDER_xls.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\READSUN OPTICAL LTD ORDER_xls.exe
"C:\Users\Admin\AppData\Local\Temp\READSUN OPTICAL LTD ORDER_xls.exe"
1⤵
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:748

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell" Get-MpPreference -verbose
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:956

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Privilege Escalation

Defense Evasion

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/748-54-0x00000000763E1000-0x00000000763E3000-memory.dmp

Filesize
8KB

Download
memory/748-55-0x0000000074980000-0x0000000074F2B000-memory.dmp

Filesize
5.7MB

Download
memory/956-56-0x0000000000000000-mapping.dmp

Download
memory/956-58-0x0000000074980000-0x0000000074F2B000-memory.dmp

Filesize
5.7MB

Download
memory/2020-60-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2020-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2020-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2020-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2020-65-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2020-66-0x000000000041E792-mapping.dmp

Download
memory/2020-68-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2020-70-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2020-72-0x0000000074980000-0x0000000074F2B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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