nanocore | 95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a

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

C2

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
behavioral1/memory/2292-3-0x0000000000350000-0x0000000000362000-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

2708 powershell.exe

pid	process
2708	powershell.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 Service = "C:\\Program Files (x86)\\WAN Service\\wansvc.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe

description	pid	process	target process
PID 2292 set thread context of 2820	2292	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 Service\wansvc.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\WAN Service\wansvc.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.exepowershell.exeRegSvcs.exe

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

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exeRegSvcs.exepowershell.exe

pid process

2292 95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe
2820 RegSvcs.exe
2820 RegSvcs.exe
2820 RegSvcs.exe
2708 powershell.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

2820 RegSvcs.exe

pid	process
2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe
2820	RegSvcs.exe
2820	RegSvcs.exe
2820	RegSvcs.exe
2708	powershell.exe

pid	process
2820	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exeRegSvcs.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe
Token: SeDebugPrivilege	2820	RegSvcs.exe
Token: SeDebugPrivilege	2708	powershell.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe

description	pid	process	target process
PID 2292 wrote to memory of 2708	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	powershell.exe
PID 2292 wrote to memory of 2708	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	powershell.exe
PID 2292 wrote to memory of 2708	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	powershell.exe
PID 2292 wrote to memory of 2708	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	powershell.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe
PID 2292 wrote to memory of 2820	2292	95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe
"C:\Users\Admin\AppData\Local\Temp\95107cbf8e5e80e92bec2ad6da134b55944850fd5306f64efa56cc9dea4a817a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2292

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:2708

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:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2292-0-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/2292-1-0x0000000000BD0000-0x0000000000D1C000-memory.dmp

Filesize
1.3MB

Download
memory/2292-2-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2292-3-0x0000000000350000-0x0000000000362000-memory.dmp

Filesize
72KB

Download
memory/2292-4-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/2292-5-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2292-6-0x0000000005660000-0x0000000005708000-memory.dmp

Filesize
672KB

Download
memory/2292-7-0x0000000000A30000-0x0000000000A68000-memory.dmp

Filesize
224KB

Download
memory/2292-22-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2820-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2820-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2820-21-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2820-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2820-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2820-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2820-10-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2820-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2820-27-0x00000000004E0000-0x00000000004EA000-memory.dmp

Filesize
40KB

Download
memory/2820-28-0x0000000000540000-0x000000000055E000-memory.dmp

Filesize
120KB

Download
memory/2820-29-0x00000000004F0000-0x00000000004FA000-memory.dmp

Filesize
40KB

Download
memory/2820-30-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads