nanocore | c79d764afe76a2ef453dc220a59820e20eaec56d44ed6ce56f04a76936309ca3

General

Target
CV.exe
Size 522KB
Sample211129-g6mntaefd3
SHA256 c79d764afe76a2ef453dc220a59820e20eaec56d44ed6ce56f04a76936309ca3
MD5 20b95abbca3a2eaae134a91ae4a41aa7
SHA1 8d93b40dac2d3b98f253faecd9cea358692d0f60
SHA512 8027076d363f22c49c12a04657aa3d30a2ead0eb5d3b11c84007ce42fc46dc2611b818484aed7d52562a9b4501c4355a8993c2e7ef6cd64db9a7bded2e1f8ca1
MD5 SHA1 SHA512

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

dera31.ddns.net:1187
195.133.18.211:1187

Mutex

f4157c11-54e5-4893-8a60-6856b8471d8c

Attributes

activate_away_mode
true
backup_connection_host
195.133.18.211
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-08-13T08:45:25.192912336Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1187
default_group
Default
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
f4157c11-54e5-4893-8a60-6856b8471d8c
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
dera31.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Manager = "C:\\Program Files (x86)\\SMTP Manager\\smtpmgr.exe"	CV.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	CV.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2472 set thread context of 504	2472	CV.exe	71

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SMTP Manager\smtpmgr.exe	CV.exe
File opened for modification	C:\Program Files (x86)\SMTP Manager\smtpmgr.exe	CV.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2472	CV.exe
2472	CV.exe
504	CV.exe
504	CV.exe
504	CV.exe
504	CV.exe
504	CV.exe
504	CV.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
504	CV.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2472	CV.exe
Token: SeDebugPrivilege	504	CV.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 648	2472	CV.exe	70
PID 2472 wrote to memory of 648	2472	CV.exe	70
PID 2472 wrote to memory of 648	2472	CV.exe	70
PID 2472 wrote to memory of 504	2472	CV.exe	71
PID 2472 wrote to memory of 504	2472	CV.exe	71
PID 2472 wrote to memory of 504	2472	CV.exe	71
PID 2472 wrote to memory of 504	2472	CV.exe	71
PID 2472 wrote to memory of 504	2472	CV.exe	71
PID 2472 wrote to memory of 504	2472	CV.exe	71
PID 2472 wrote to memory of 504	2472	CV.exe	71
PID 2472 wrote to memory of 504	2472	CV.exe	71

C:\Users\Admin\AppData\Local\Temp\CV.exe
"C:\Users\Admin\AppData\Local\Temp\CV.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Users\Admin\AppData\Local\Temp\CV.exe
  "C:\Users\Admin\AppData\Local\Temp\CV.exe"
  2⤵
  PID:648
- C:\Users\Admin\AppData\Local\Temp\CV.exe
  "C:\Users\Admin\AppData\Local\Temp\CV.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:504

C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe
C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe
1⤵
PID:3696

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/504-118-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/504-120-0x00000000025C0000-0x00000000025C1000-memory.dmp

Download

memory/2472-115-0x0000000002D70000-0x0000000002D71000-memory.dmp

Download

memory/2472-117-0x0000000002D71000-0x0000000002D72000-memory.dmp

Download

memory/3696-116-0x0000000001150000-0x0000000001152000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads