nanocore | 332daf2bc522ff8e77702d38ca104c70a11e24b6cde0440f69a42869a35bf271

Analysis

max time kernel
103s
max time network
152s
platform
windows10_x64
resource
win10v20201028
submitted
17/11/2020, 11:24

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General

Target
4dd1297feef3c53b00e6e92d357408be.exe
Size 658KB
Sample201117-2tvllyfv6x
SHA256 332daf2bc522ff8e77702d38ca104c70a11e24b6cde0440f69a42869a35bf271
MD5 4dd1297feef3c53b00e6e92d357408be
SHA1 7264e21eb9a0c24974263dd10a25c5c74b789918
SHA512 9caad980d80e7fc80c6c7181cc44a067698636ef4c38541306ef74d49b9759e5cb3b1a9e0b3992156c3b004217bb39bf494cefd2134382f0254308d7dfddcdb7
MD5 SHA1 SHA512

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

23.105.131.177:4040
127.0.0.1:4040

Mutex

c970bff9-b124-416c-a2c4-211bbeee3414

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-08-22T06:01:16.787464036Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
4040
default_group
kingnone
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
c970bff9-b124-416c-a2c4-211bbeee3414
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
23.105.131.177
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
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

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\SMTP Manager = "C:\\Program Files (x86)\\SMTP Manager\\smtpmgr.exe"	4dd1297feef3c53b00e6e92d357408be.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	4dd1297feef3c53b00e6e92d357408be.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 540 set thread context of 2464	540	4dd1297feef3c53b00e6e92d357408be.exe	79
PID 2464 set thread context of 1240	2464	4dd1297feef3c53b00e6e92d357408be.exe	80
PID 2464 set thread context of 1264	2464	4dd1297feef3c53b00e6e92d357408be.exe	81

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SMTP Manager\smtpmgr.exe	4dd1297feef3c53b00e6e92d357408be.exe
File opened for modification	C:\Program Files (x86)\SMTP Manager\smtpmgr.exe	4dd1297feef3c53b00e6e92d357408be.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
540	4dd1297feef3c53b00e6e92d357408be.exe
540	4dd1297feef3c53b00e6e92d357408be.exe
2464	4dd1297feef3c53b00e6e92d357408be.exe
2464	4dd1297feef3c53b00e6e92d357408be.exe
2464	4dd1297feef3c53b00e6e92d357408be.exe
2464	4dd1297feef3c53b00e6e92d357408be.exe
2464	4dd1297feef3c53b00e6e92d357408be.exe
2464	4dd1297feef3c53b00e6e92d357408be.exe
1264	vbc.exe
1264	vbc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2464	4dd1297feef3c53b00e6e92d357408be.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	540	4dd1297feef3c53b00e6e92d357408be.exe
Token: SeDebugPrivilege	2464	4dd1297feef3c53b00e6e92d357408be.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 3356	540	4dd1297feef3c53b00e6e92d357408be.exe	78
PID 540 wrote to memory of 3356	540	4dd1297feef3c53b00e6e92d357408be.exe	78
PID 540 wrote to memory of 3356	540	4dd1297feef3c53b00e6e92d357408be.exe	78
PID 540 wrote to memory of 2464	540	4dd1297feef3c53b00e6e92d357408be.exe	79
PID 540 wrote to memory of 2464	540	4dd1297feef3c53b00e6e92d357408be.exe	79
PID 540 wrote to memory of 2464	540	4dd1297feef3c53b00e6e92d357408be.exe	79
PID 540 wrote to memory of 2464	540	4dd1297feef3c53b00e6e92d357408be.exe	79
PID 540 wrote to memory of 2464	540	4dd1297feef3c53b00e6e92d357408be.exe	79
PID 540 wrote to memory of 2464	540	4dd1297feef3c53b00e6e92d357408be.exe	79
PID 540 wrote to memory of 2464	540	4dd1297feef3c53b00e6e92d357408be.exe	79
PID 540 wrote to memory of 2464	540	4dd1297feef3c53b00e6e92d357408be.exe	79
PID 2464 wrote to memory of 1240	2464	4dd1297feef3c53b00e6e92d357408be.exe	80
PID 2464 wrote to memory of 1240	2464	4dd1297feef3c53b00e6e92d357408be.exe	80
PID 2464 wrote to memory of 1240	2464	4dd1297feef3c53b00e6e92d357408be.exe	80
PID 2464 wrote to memory of 1240	2464	4dd1297feef3c53b00e6e92d357408be.exe	80
PID 2464 wrote to memory of 1240	2464	4dd1297feef3c53b00e6e92d357408be.exe	80
PID 2464 wrote to memory of 1240	2464	4dd1297feef3c53b00e6e92d357408be.exe	80
PID 2464 wrote to memory of 1240	2464	4dd1297feef3c53b00e6e92d357408be.exe	80
PID 2464 wrote to memory of 1240	2464	4dd1297feef3c53b00e6e92d357408be.exe	80
PID 2464 wrote to memory of 1240	2464	4dd1297feef3c53b00e6e92d357408be.exe	80
PID 2464 wrote to memory of 1264	2464	4dd1297feef3c53b00e6e92d357408be.exe	81
PID 2464 wrote to memory of 1264	2464	4dd1297feef3c53b00e6e92d357408be.exe	81
PID 2464 wrote to memory of 1264	2464	4dd1297feef3c53b00e6e92d357408be.exe	81
PID 2464 wrote to memory of 1264	2464	4dd1297feef3c53b00e6e92d357408be.exe	81
PID 2464 wrote to memory of 1264	2464	4dd1297feef3c53b00e6e92d357408be.exe	81
PID 2464 wrote to memory of 1264	2464	4dd1297feef3c53b00e6e92d357408be.exe	81
PID 2464 wrote to memory of 1264	2464	4dd1297feef3c53b00e6e92d357408be.exe	81
PID 2464 wrote to memory of 1264	2464	4dd1297feef3c53b00e6e92d357408be.exe	81
PID 2464 wrote to memory of 1264	2464	4dd1297feef3c53b00e6e92d357408be.exe	81

C:\Users\Admin\AppData\Local\Temp\4dd1297feef3c53b00e6e92d357408be.exe
"C:\Users\Admin\AppData\Local\Temp\4dd1297feef3c53b00e6e92d357408be.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:540
- C:\Users\Admin\AppData\Local\Temp\4dd1297feef3c53b00e6e92d357408be.exe
  "{path}"
  2⤵
  PID:3356
- C:\Users\Admin\AppData\Local\Temp\4dd1297feef3c53b00e6e92d357408be.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2464
- - \??\c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe
    "c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\2p2exwrr.plk"
    3⤵
    PID:1240
- - \??\c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe
    "c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\x4cvpz0r.0hm"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:1264

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1240-3-0x0000000000400000-0x000000000041B000-memory.dmp

Download

memory/1240-5-0x0000000000400000-0x000000000041B000-memory.dmp

Download

memory/1264-7-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/1264-9-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/2464-0-0x0000000000400000-0x0000000000438000-memory.dmp

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