nanocore | df4ac313a1013e4111037cb09097cc4a53251d144568c8bd1fd4587cb8f7c4b4

General

Target
LKVQYCZZkBgadMX.exe
Size 488KB
Sample200731-mn8twbzkte
SHA256 df4ac313a1013e4111037cb09097cc4a53251d144568c8bd1fd4587cb8f7c4b4
MD5 bef5cac24c190344f2bd75ae5e12b4f5
SHA1 99cfe77679e1e0abc487b61ac3093e1fed30a277
SHA512 4f885b06a4d96197d4ddf79fc9019593f88d834e1afa780ed7da4d17c2ca50c244fbfb2b77f09a908c1321ec0af4d603c02a1450dd8d71aed888c1200a50059a
MD5 SHA1 SHA512

Score

10^/10

evasion trojan keylogger stealer spyware nanocore persistence

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

79.134.225.71:1985

Mutex

b906c32a-7c7b-408f-aea8-c2cf051540c7

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-05-08T07:10:15.167894836Z
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
Cherry
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
b906c32a-7c7b-408f-aea8-c2cf051540c7
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
79.134.225.71
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

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3588	LKVQYCZZkBgadMX.exe
Token: SeDebugPrivilege	3908	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3588	LKVQYCZZkBgadMX.exe
3588	LKVQYCZZkBgadMX.exe
3588	LKVQYCZZkBgadMX.exe
3588	LKVQYCZZkBgadMX.exe
3908	RegSvcs.exe
3908	RegSvcs.exe
3908	RegSvcs.exe
3908	RegSvcs.exe
3908	RegSvcs.exe
3908	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 3824	3588	LKVQYCZZkBgadMX.exe	67
PID 3588 wrote to memory of 3824	3588	LKVQYCZZkBgadMX.exe	67
PID 3588 wrote to memory of 3824	3588	LKVQYCZZkBgadMX.exe	67
PID 3588 wrote to memory of 3908	3588	LKVQYCZZkBgadMX.exe	69
PID 3588 wrote to memory of 3908	3588	LKVQYCZZkBgadMX.exe	69
PID 3588 wrote to memory of 3908	3588	LKVQYCZZkBgadMX.exe	69
PID 3588 wrote to memory of 3908	3588	LKVQYCZZkBgadMX.exe	69
PID 3588 wrote to memory of 3908	3588	LKVQYCZZkBgadMX.exe	69
PID 3588 wrote to memory of 3908	3588	LKVQYCZZkBgadMX.exe	69
PID 3588 wrote to memory of 3908	3588	LKVQYCZZkBgadMX.exe	69
PID 3588 wrote to memory of 3908	3588	LKVQYCZZkBgadMX.exe	69

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DDP Subsystem\ddpss.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\DDP Subsystem\ddpss.exe	RegSvcs.exe

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\DDP Subsystem = "C:\\Program Files (x86)\\DDP Subsystem\\ddpss.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3588 set thread context of 3908	3588	LKVQYCZZkBgadMX.exe	69

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3908	RegSvcs.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
3824	schtasks.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	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\LKVQYCZZkBgadMX.exe
"C:\Users\Admin\AppData\Local\Temp\LKVQYCZZkBgadMX.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:3588
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAD42.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3824
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "{path}"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious behavior: EnumeratesProcesses
  - Drops file in Program Files directory
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Checks whether UAC is enabled
  PID:3908