nanocore | f1935263e66e861d822355a9ec1332f46f74ff8fded6e52cefbfed60cd3eca0a

General

Target

23C8Bj2mCZIlAVt.exe
Size

350KB
MD5

60e504ff4a2e238ff0716044e8d3f4e3
SHA1

8e0b70725fce4818e20a5e524211b4f7e93a731a
SHA256

f1935263e66e861d822355a9ec1332f46f74ff8fded6e52cefbfed60cd3eca0a
SHA512

b34c70da34dd76bb683b978847496509bc74c8562af68046932ded4c0cd7e0ebcf023c1883c386439d269f14abef3a494380edee236f78332c4d215eaa780788

Score

10^/10

keylogger trojan stealer spyware nanocore persistence evasion

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

91.193.75.58:1985

Mutex

596c2bb9-90b7-4362-af9a-082627ebed15

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-30T21:40:30.911959536Z
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
official
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
596c2bb9-90b7-4362-af9a-082627ebed15
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
91.193.75.58
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	2916	23C8Bj2mCZIlAVt.exe
Token: SeDebugPrivilege	3612	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2916	23C8Bj2mCZIlAVt.exe
3612	RegSvcs.exe
3612	RegSvcs.exe
3612	RegSvcs.exe
3612	RegSvcs.exe
3612	RegSvcs.exe
3612	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3612	RegSvcs.exe

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

Adds Run entry 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\SCSI Manager = "C:\\Program Files (x86)\\SCSI Manager\\scsimgr.exe"	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 3588	2916	23C8Bj2mCZIlAVt.exe	73
PID 2916 wrote to memory of 3588	2916	23C8Bj2mCZIlAVt.exe	73
PID 2916 wrote to memory of 3588	2916	23C8Bj2mCZIlAVt.exe	73
PID 2916 wrote to memory of 3612	2916	23C8Bj2mCZIlAVt.exe	75
PID 2916 wrote to memory of 3612	2916	23C8Bj2mCZIlAVt.exe	75
PID 2916 wrote to memory of 3612	2916	23C8Bj2mCZIlAVt.exe	75
PID 2916 wrote to memory of 3612	2916	23C8Bj2mCZIlAVt.exe	75
PID 2916 wrote to memory of 3612	2916	23C8Bj2mCZIlAVt.exe	75
PID 2916 wrote to memory of 3612	2916	23C8Bj2mCZIlAVt.exe	75
PID 2916 wrote to memory of 3612	2916	23C8Bj2mCZIlAVt.exe	75
PID 2916 wrote to memory of 3612	2916	23C8Bj2mCZIlAVt.exe	75

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 3612	2916	23C8Bj2mCZIlAVt.exe	75

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SCSI Manager\scsimgr.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\SCSI Manager\scsimgr.exe	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
3588	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\23C8Bj2mCZIlAVt.exe
"C:\Users\Admin\AppData\Local\Temp\23C8Bj2mCZIlAVt.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:2916
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WxXJDiE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp285E.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3588
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "{path}"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Adds Run entry to start application
  - Drops file in Program Files directory
  - Checks whether UAC is enabled
  PID:3612

C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe
C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe
1⤵
PID:556