nanocore | 95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a

Analysis

max time kernel
141s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
26-07-2024 04:36

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General

Target

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe
Size

1.3MB
MD5

ec336866176c93a6e9193bad24adea51
SHA1

c9afc56751158d78029deba3afab3ff823a0c2c5
SHA256

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a
SHA512

678f47cfefa7204b773e1ff4b3dee76a88aedf3fa7bdebabc278c9e2c006c265e3c5b1d7cc0c3413177428b1b45cdb209a9a1a85ab98c181bd28da899c56669c
SSDEEP

24576:BUS/d3xKzks2ks2y8jgES2zzEQvzLKcLAbvJy8N6ZNqZ:DKnwEPzzNvzLKCAblN6ZNq

Score

10^/10

nanocore discovery execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

79.134.225.100:1985

127.0.0.1:1985

Mutex

b10f8b74-4448-4597-840b-1e44a5084bfc

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-04-30T10:29:24.181451236Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
1985
default_group
OBO
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
b10f8b74-4448-4597-840b-1e44a5084bfc
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
79.134.225.100
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

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

Processes:

resource	yara_rule
behavioral2/memory/4480-7-0x0000000005B60000-0x0000000005B72000-memory.dmp	CustAttr

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2032 powershell.exe

pid	process
2032	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegSvcs.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"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe

description	pid	process	target process
PID 4480 set thread context of 4520	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegSvcs.exe

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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exeRegSvcs.exepowershell.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exepowershell.exeRegSvcs.exe

pid	process
4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe
2032	powershell.exe
4520	RegSvcs.exe
4520	RegSvcs.exe
4520	RegSvcs.exe
2032	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

4520 RegSvcs.exe

pid	process
4520	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exepowershell.exeRegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe
Token: SeDebugPrivilege	2032	powershell.exe
Token: SeDebugPrivilege	4520	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe

description	pid	process	target process
PID 4480 wrote to memory of 2032	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	powershell.exe
PID 4480 wrote to memory of 2032	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	powershell.exe
PID 4480 wrote to memory of 2032	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	powershell.exe
PID 4480 wrote to memory of 4520	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 4480 wrote to memory of 4520	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 4480 wrote to memory of 4520	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 4480 wrote to memory of 4520	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 4480 wrote to memory of 4520	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 4480 wrote to memory of 4520	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 4480 wrote to memory of 4520	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 4480 wrote to memory of 4520	4480	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe
"C:\Users\Admin\AppData\Local\Temp\95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4480

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe"
2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2032

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nw3gmlmf.ncz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2032-53-0x00000000060D0000-0x00000000060EE000-memory.dmp

Filesize
120KB

Download
memory/2032-39-0x0000000005B20000-0x0000000005B6C000-memory.dmp

Filesize
304KB

Download
memory/2032-58-0x00000000070B0000-0x0000000007146000-memory.dmp

Filesize
600KB

Download
memory/2032-57-0x0000000006EA0000-0x0000000006EAA000-memory.dmp

Filesize
40KB

Download
memory/2032-56-0x0000000006E30000-0x0000000006E4A000-memory.dmp

Filesize
104KB

Download
memory/2032-55-0x0000000007470000-0x0000000007AEA000-memory.dmp

Filesize
6.5MB

Download
memory/2032-54-0x0000000006D20000-0x0000000006DC3000-memory.dmp

Filesize
652KB

Download
memory/2032-43-0x00000000701A0000-0x00000000701EC000-memory.dmp

Filesize
304KB

Download
memory/2032-42-0x0000000006AE0000-0x0000000006B12000-memory.dmp

Filesize
200KB

Download
memory/2032-60-0x0000000007060000-0x000000000706E000-memory.dmp

Filesize
56KB

Download
memory/2032-59-0x0000000007030000-0x0000000007041000-memory.dmp

Filesize
68KB

Download
memory/2032-37-0x0000000005530000-0x0000000005884000-memory.dmp

Filesize
3.3MB

Download
memory/2032-40-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/2032-38-0x0000000005AE0000-0x0000000005AFE000-memory.dmp

Filesize
120KB

Download
memory/2032-16-0x0000000002200000-0x0000000002236000-memory.dmp

Filesize
216KB

Download
memory/2032-18-0x0000000004CE0000-0x0000000005308000-memory.dmp

Filesize
6.2MB

Download
memory/2032-24-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/2032-21-0x0000000004A30000-0x0000000004A52000-memory.dmp

Filesize
136KB

Download
memory/2032-23-0x00000000054C0000-0x0000000005526000-memory.dmp

Filesize
408KB

Download
memory/2032-66-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/2032-63-0x0000000007150000-0x0000000007158000-memory.dmp

Filesize
32KB

Download
memory/2032-22-0x0000000004C50000-0x0000000004CB6000-memory.dmp

Filesize
408KB

Download
memory/2032-62-0x0000000007170000-0x000000000718A000-memory.dmp

Filesize
104KB

Download
memory/2032-61-0x0000000007070000-0x0000000007084000-memory.dmp

Filesize
80KB

Download
memory/2032-17-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/4480-8-0x00000000745CE000-0x00000000745CF000-memory.dmp

Filesize
4KB

Download
memory/4480-14-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/4480-2-0x0000000006080000-0x0000000006624000-memory.dmp

Filesize
5.6MB

Download
memory/4480-11-0x0000000008FC0000-0x0000000008FF8000-memory.dmp

Filesize
224KB

Download
memory/4480-10-0x0000000006B50000-0x0000000006BF8000-memory.dmp

Filesize
672KB

Download
memory/4480-9-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/4480-1-0x0000000000FF0000-0x000000000113C000-memory.dmp

Filesize
1.3MB

Download
memory/4480-0-0x00000000745CE000-0x00000000745CF000-memory.dmp

Filesize
4KB

Download
memory/4480-7-0x0000000005B60000-0x0000000005B72000-memory.dmp

Filesize
72KB

Download
memory/4480-6-0x0000000005DB0000-0x0000000005E4C000-memory.dmp

Filesize
624KB

Download
memory/4480-5-0x0000000005B40000-0x0000000005B4A000-memory.dmp

Filesize
40KB

Download
memory/4480-4-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/4480-3-0x0000000005B70000-0x0000000005C02000-memory.dmp

Filesize
584KB

Download
memory/4520-15-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/4520-41-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/4520-67-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/4520-32-0x0000000005660000-0x000000000566A000-memory.dmp

Filesize
40KB

Download
memory/4520-26-0x0000000005460000-0x000000000547E000-memory.dmp

Filesize
120KB

Download
memory/4520-25-0x00000000053A0000-0x00000000053AA000-memory.dmp

Filesize
40KB

Download
memory/4520-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4520-68-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download