nanocore | cb923f272e0296a32c82331b4e12de37280c80d7cf320084f2a4e621f4387de8

General

Target
INQUIRY ABS_ES200483948.exe
Size 364KB
Sample201109-ajwjele522
SHA256 cb923f272e0296a32c82331b4e12de37280c80d7cf320084f2a4e621f4387de8
MD5 3a5cdf21cf0ec71679ff0b75b52dba37
SHA1 7526c1203162f2a3990f2c6fbf05f04285656890
SHA512 de87372ce815e265366081825f56cb124bc541cab365138d4333df96ec37aebaed0f71a54af15243442cbeb1aed8c6fa5c975f9123f66b8f5b02ec4fbc204ad1
MD5 SHA1 SHA512

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.140.53.13:6384

Mutex

6d6c04cf-80a8-4bf8-a2d4-66ded90e4f61

Attributes

activate_away_mode
true
backup_connection_host
185.140.53.13
backup_dns_server
buffer_size
65535
build_time
2020-02-16T21:53:23.530701636Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
6384
default_group
May5nav
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
6d6c04cf-80a8-4bf8-a2d4-66ded90e4f61
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
185.140.53.13
primary_dns_server
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\WAN Service = "C:\\Program Files (x86)\\WAN Service\\wansv.exe"	INQUIRY ABS_ES200483948.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	INQUIRY ABS_ES200483948.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4800 set thread context of 3812	4800	INQUIRY ABS_ES200483948.exe	76

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\WAN Service\wansv.exe	INQUIRY ABS_ES200483948.exe
File created	C:\Program Files (x86)\WAN Service\wansv.exe	INQUIRY ABS_ES200483948.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4800	INQUIRY ABS_ES200483948.exe
4800	INQUIRY ABS_ES200483948.exe
4800	INQUIRY ABS_ES200483948.exe
3812	INQUIRY ABS_ES200483948.exe
3812	INQUIRY ABS_ES200483948.exe
3812	INQUIRY ABS_ES200483948.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3812	INQUIRY ABS_ES200483948.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4800	INQUIRY ABS_ES200483948.exe
Token: SeDebugPrivilege	3812	INQUIRY ABS_ES200483948.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 3740	4800	INQUIRY ABS_ES200483948.exe	75
PID 4800 wrote to memory of 3740	4800	INQUIRY ABS_ES200483948.exe	75
PID 4800 wrote to memory of 3740	4800	INQUIRY ABS_ES200483948.exe	75
PID 4800 wrote to memory of 3812	4800	INQUIRY ABS_ES200483948.exe	76
PID 4800 wrote to memory of 3812	4800	INQUIRY ABS_ES200483948.exe	76
PID 4800 wrote to memory of 3812	4800	INQUIRY ABS_ES200483948.exe	76
PID 4800 wrote to memory of 3812	4800	INQUIRY ABS_ES200483948.exe	76
PID 4800 wrote to memory of 3812	4800	INQUIRY ABS_ES200483948.exe	76
PID 4800 wrote to memory of 3812	4800	INQUIRY ABS_ES200483948.exe	76
PID 4800 wrote to memory of 3812	4800	INQUIRY ABS_ES200483948.exe	76
PID 4800 wrote to memory of 3812	4800	INQUIRY ABS_ES200483948.exe	76

C:\Users\Admin\AppData\Local\Temp\INQUIRY ABS_ES200483948.exe
"C:\Users\Admin\AppData\Local\Temp\INQUIRY ABS_ES200483948.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Users\Admin\AppData\Local\Temp\INQUIRY ABS_ES200483948.exe
  "{path}"
  2⤵
  PID:3740
- C:\Users\Admin\AppData\Local\Temp\INQUIRY ABS_ES200483948.exe
  "{path}"
  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:3812

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

Replay Monitor

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Downloads

memory/3812-0-0x0000000000400000-0x0000000000438000-memory.dmp

Download

Analysis

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