nanocore | 8ca049e0699925d3ea76cb769814c220c410f29eae2f862ddbb03361e5a92d73

General

Target

PMA21-110.exe
Size

688KB
MD5

ffb31463ba10f652b0dd8bc10e734b46
SHA1

bfc2c18c7ea8f41823e5e1d89d2971fafa4966dd
SHA256

8ca049e0699925d3ea76cb769814c220c410f29eae2f862ddbb03361e5a92d73
SHA512

7cbc5aa59554d36eaf0daab10e1c7353b068cb65fb2afe225ef4812e43c90b1d0681c17c0924816a27850277c8b3b39fd388c72232b57615220dbbac9976a2e6

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

91.193.75.228:1985

127.0.0.1:1985

Mutex

76ab9a6f-655c-4b06-a052-5a2cb9e07a2f

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-05-07T21:13:54.381433036Z
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
KingT
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
76ab9a6f-655c-4b06-a052-5a2cb9e07a2f
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
91.193.75.228
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/864-63-0x00000000003A0000-0x00000000003AB000-memory.dmp	CustAttr

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\LAN Host = "C:\\Program Files (x86)\\LAN Host\\lanhost.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PMA21-110.exe

description pid process target process

PID 864 set thread context of 624 864 PMA21-110.exe RegSvcs.exe

description	pid	process	target process
PID 864 set thread context of 624	864	PMA21-110.exe	RegSvcs.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegSvcs.exe

description	ioc	process
File created	C:\Program Files (x86)\LAN Host\lanhost.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\LAN Host\lanhost.exe	RegSvcs.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

PMA21-110.exepowershell.exeRegSvcs.exe

pid process

864 PMA21-110.exe
584 powershell.exe
624 RegSvcs.exe
624 RegSvcs.exe
624 RegSvcs.exe
584 powershell.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

624 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PMA21-110.exepowershell.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 864 PMA21-110.exe
Token: SeDebugPrivilege 584 powershell.exe
Token: SeDebugPrivilege 624 RegSvcs.exe

pid	process
864	PMA21-110.exe
584	powershell.exe
624	RegSvcs.exe
624	RegSvcs.exe
624	RegSvcs.exe
584	powershell.exe

pid	process
624	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	864	PMA21-110.exe
Token: SeDebugPrivilege	584	powershell.exe
Token: SeDebugPrivilege	624	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

PMA21-110.exe

description	pid	process	target process
PID 864 wrote to memory of 584	864	PMA21-110.exe	powershell.exe
PID 864 wrote to memory of 584	864	PMA21-110.exe	powershell.exe
PID 864 wrote to memory of 584	864	PMA21-110.exe	powershell.exe
PID 864 wrote to memory of 584	864	PMA21-110.exe	powershell.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe
PID 864 wrote to memory of 624	864	PMA21-110.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\PMA21-110.exe
"C:\Users\Admin\AppData\Local\Temp\PMA21-110.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:864

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\PMA21-110.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:584

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
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:624

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/584-91-0x0000000005750000-0x0000000005751000-memory.dmp

Filesize
4KB

Download
memory/584-67-0x0000000075971000-0x0000000075973000-memory.dmp

Filesize
8KB

Download
memory/584-114-0x00000000062D0000-0x00000000062D1000-memory.dmp

Filesize
4KB

Download
memory/584-113-0x00000000062C0000-0x00000000062C1000-memory.dmp

Filesize
4KB

Download
memory/584-79-0x0000000001E90000-0x0000000001E91000-memory.dmp

Filesize
4KB

Download
memory/584-66-0x0000000000000000-mapping.dmp

Download
memory/584-115-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/584-98-0x0000000006240000-0x0000000006241000-memory.dmp

Filesize
4KB

Download
memory/584-99-0x00000000055D0000-0x00000000055D1000-memory.dmp

Filesize
4KB

Download
memory/584-90-0x0000000005710000-0x0000000005711000-memory.dmp

Filesize
4KB

Download
memory/584-72-0x0000000002000000-0x0000000002001000-memory.dmp

Filesize
4KB

Download
memory/584-73-0x0000000004770000-0x0000000004771000-memory.dmp

Filesize
4KB

Download
memory/584-85-0x00000000056D0000-0x00000000056D1000-memory.dmp

Filesize
4KB

Download
memory/584-82-0x0000000005280000-0x0000000005281000-memory.dmp

Filesize
4KB

Download
memory/584-80-0x0000000001E92000-0x0000000001E93000-memory.dmp

Filesize
4KB

Download
memory/584-77-0x0000000002700000-0x0000000002701000-memory.dmp

Filesize
4KB

Download
memory/624-68-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/624-78-0x0000000004D80000-0x0000000004D81000-memory.dmp

Filesize
4KB

Download
memory/624-76-0x00000000004C0000-0x00000000004C3000-memory.dmp

Filesize
12KB

Download
memory/624-81-0x0000000004D85000-0x0000000004D96000-memory.dmp

Filesize
68KB

Download
memory/624-75-0x0000000000460000-0x0000000000479000-memory.dmp

Filesize
100KB

Download
memory/624-74-0x0000000000450000-0x0000000000455000-memory.dmp

Filesize
20KB

Download
memory/624-70-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/624-69-0x000000000041E792-mapping.dmp

Download
memory/864-60-0x0000000000EC0000-0x0000000000EC1000-memory.dmp

Filesize
4KB

Download
memory/864-65-0x0000000000950000-0x0000000000985000-memory.dmp

Filesize
212KB

Download
memory/864-64-0x00000000059F0000-0x0000000005A6A000-memory.dmp

Filesize
488KB

Download
memory/864-63-0x00000000003A0000-0x00000000003AB000-memory.dmp

Filesize
44KB

Download
memory/864-62-0x0000000004D20000-0x0000000004D21000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads