nanocore | 1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187

General

Target

1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe
Size

981KB
MD5

edb51a0da55d785a48a2a18b944252b7
SHA1

8382890673520cc05b9d300ea6625741d2b44bec
SHA256

1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187
SHA512

98d2ed13520ae2934fd668b7018586e00ca53428891a90ac0a761b9a3db86b908e5617c4478dc0ba9d7d6bc684c77078de33630e29a3579f96c9942817db3756

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.171.25.25:9723

Mutex

9e2c99bd-556d-42ca-af23-91f532246530

Attributes

activate_away_mode
true
backup_connection_host
185.171.25.25
backup_dns_server
buffer_size
65535
build_time
2017-12-19T11:16:10.427397636Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
9723
default_group
CHUCKS PAY
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
9e2c99bd-556d-42ca-af23-91f532246530
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
185.171.25.25
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\WPA Subsystem = "C:\\Program Files (x86)\\WPA Subsystem\\wpass.exe"	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.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	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 924 set thread context of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\WPA Subsystem\wpass.exe	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe
File opened for modification	C:\Program Files (x86)\WPA Subsystem\wpass.exe	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
956	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe
956	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
956	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	956	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28
PID 924 wrote to memory of 956	924	1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe	28

C:\Users\Admin\AppData\Local\Temp\1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe
"C:\Users\Admin\AppData\Local\Temp\1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:924
- C:\Users\Admin\AppData\Local\Temp\1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe
  "C:\Users\Admin\AppData\Local\Temp\1b1cd2575091164efc828ecb855ce4b6506d000a3e02ca6405406d7696945187.exe"
  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:956

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/924-56-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/924-57-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/956-58-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/956-61-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/956-63-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/956-64-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/956-65-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/956-66-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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