nanocore | 9b9b8fda0efdc14380cc3da53380812bfe152a4a05de99aa9159f167066f9ff0

General

Target
NEW QUOTATION#RFQ210421A87344KMTC VIETNAM CO.exe
Size 396KB
Sample220228-k57jdafbhm
SHA256 9b9b8fda0efdc14380cc3da53380812bfe152a4a05de99aa9159f167066f9ff0
MD5 9c2db9f76c06a9e20ed5a02f8f3127e0
SHA1 18b78382658cd5eec3f1c4b724c5a1c81a0b6ce3
SHA512 3260d4fab9eecf06b35cda755e8e9a26597eb9e6678c940f8f65690b20c1980a54547413accd204c22dce697352d146a2486697759b99fbf313e45fd3280458e
MD5 SHA1 SHA512

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.140.53.183:8844

Mutex

863ccee6-8f3e-4232-80d4-cf6441cd3b90

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-12-05T11:23:24.417957436Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
8844
default_group
Sales
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
863ccee6-8f3e-4232-80d4-cf6441cd3b90
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
185.140.53.183
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

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 3496 created 1664	3496	WerFault.exe	82

Executes dropped EXE 2 IoCs

pid	Process
4556	ygzicvoo.exe
1664	ygzicvoo.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\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vvgguhykaiyma = "C:\\Users\\Admin\\AppData\\Roaming\\xvwrkthabyihde\\wvcypbdrndqjc.exe"	ygzicvoo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4556 set thread context of 1664	4556	ygzicvoo.exe	82

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3620	1664	WerFault.exe	82

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3620	WerFault.exe
3620	WerFault.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	3620	WerFault.exe
Token: SeBackupPrivilege	3620	WerFault.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3980 wrote to memory of 4556	3980	NEW QUOTATION#RFQ210421A87344KMTC VIETNAM CO.exe	81
PID 3980 wrote to memory of 4556	3980	NEW QUOTATION#RFQ210421A87344KMTC VIETNAM CO.exe	81
PID 3980 wrote to memory of 4556	3980	NEW QUOTATION#RFQ210421A87344KMTC VIETNAM CO.exe	81
PID 4556 wrote to memory of 1664	4556	ygzicvoo.exe	82
PID 4556 wrote to memory of 1664	4556	ygzicvoo.exe	82
PID 4556 wrote to memory of 1664	4556	ygzicvoo.exe	82
PID 4556 wrote to memory of 1664	4556	ygzicvoo.exe	82
PID 4556 wrote to memory of 1664	4556	ygzicvoo.exe	82
PID 4556 wrote to memory of 1664	4556	ygzicvoo.exe	82
PID 4556 wrote to memory of 1664	4556	ygzicvoo.exe	82
PID 4556 wrote to memory of 1664	4556	ygzicvoo.exe	82
PID 4556 wrote to memory of 1664	4556	ygzicvoo.exe	82
PID 4556 wrote to memory of 1664	4556	ygzicvoo.exe	82
PID 3496 wrote to memory of 1664	3496	WerFault.exe	82
PID 3496 wrote to memory of 1664	3496	WerFault.exe	82

C:\Users\Admin\AppData\Local\Temp\NEW QUOTATION#RFQ210421A87344KMTC VIETNAM CO.exe
"C:\Users\Admin\AppData\Local\Temp\NEW QUOTATION#RFQ210421A87344KMTC VIETNAM CO.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Users\Admin\AppData\Local\Temp\ygzicvoo.exe
  C:\Users\Admin\AppData\Local\Temp\ygzicvoo.exe C:\Users\Admin\AppData\Local\Temp\zqqnopo
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4556
- - C:\Users\Admin\AppData\Local\Temp\ygzicvoo.exe
    C:\Users\Admin\AppData\Local\Temp\ygzicvoo.exe C:\Users\Admin\AppData\Local\Temp\zqqnopo
    3⤵
    - Executes dropped EXE
    PID:1664
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1664 -s 432
      4⤵
      Program crash
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1664 -ip 1664
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3496

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

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1664-134-0x0000000000400000-0x0000000000448000-memory.dmp

Download

memory/1664-136-0x0000000000400000-0x0000000000448000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads