nanocore | f1935263e66e861d822355a9ec1332f46f74ff8fded6e52cefbfed60cd3eca0a

General

Target

23C8Bj2mCZIlAVt.exe
Size

350KB
MD5

60e504ff4a2e238ff0716044e8d3f4e3
SHA1

8e0b70725fce4818e20a5e524211b4f7e93a731a
SHA256

f1935263e66e861d822355a9ec1332f46f74ff8fded6e52cefbfed60cd3eca0a
SHA512

b34c70da34dd76bb683b978847496509bc74c8562af68046932ded4c0cd7e0ebcf023c1883c386439d269f14abef3a494380edee236f78332c4d215eaa780788

Score

10^/10

evasion trojan keylogger stealer spyware nanocore persistence

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 behavior: EnumeratesProcesses 4 IoCs

pid	Process
1584	RegSvcs.exe
1584	RegSvcs.exe
1584	RegSvcs.exe
1584	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1584	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
316	schtasks.exe

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

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 316	1088	23C8Bj2mCZIlAVt.exe	24
PID 1088 wrote to memory of 316	1088	23C8Bj2mCZIlAVt.exe	24
PID 1088 wrote to memory of 316	1088	23C8Bj2mCZIlAVt.exe	24
PID 1088 wrote to memory of 316	1088	23C8Bj2mCZIlAVt.exe	24
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26
PID 1088 wrote to memory of 1584	1088	23C8Bj2mCZIlAVt.exe	26

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1088 set thread context of 1584	1088	23C8Bj2mCZIlAVt.exe	26

Drops file in Program Files directory 2 IoCs

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

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\WAN Subsystem = "C:\\Program Files (x86)\\WAN Subsystem\\wanss.exe"	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1584	RegSvcs.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 WriteProcessMemory
- Suspicious use of SetThreadContext
PID:1088
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WxXJDiE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9349.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:316
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Drops file in Program Files directory
  - Adds Run entry to start application
  - Suspicious use of AdjustPrivilegeToken
  - Checks whether UAC is enabled
  PID:1584

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

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/1584-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1584-4-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1584-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads