nanocore | 941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0

General

Target

941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe
Size

415KB
MD5

6d30b8abcb1afe112d465cbc6d426000
SHA1

c75f8ea3ef64c12b1941c026e7857a4bae318ff9
SHA256

941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0
SHA512

d0b7425b48d920e635dbeeada2049587e5de729dbc0938187fb84fedf3659c3f1d49099d50f0c34a2c7582efc11ca063a7705717df40e731468abb487cfc3e1e
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7g:ITNYrnE3bm/CiejewY5v3

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

[email protected]:46218

178.32.224.116:46218

Mutex

4af74541-e3f1-469c-8af7-efe4071b81cf

Attributes

activate_away_mode
false
backup_connection_host
178.32.224.116
backup_dns_server
buffer_size
65535
build_time
2018-07-28T12:59:38.488799236Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
46218
default_group
tourex
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
4af74541-e3f1-469c-8af7-efe4071b81cf
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
[email protected]
primary_dns_server
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe

Executes dropped EXE 1 IoCs

Processes:

ximo2ubzn1i.exe

pid	Process
4320	ximo2ubzn1i.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

regasm.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	regasm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

ximo2ubzn1i.exe

description	pid	Process	procid_target
PID 4320 set thread context of 2728	4320	ximo2ubzn1i.exe	83

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exeximo2ubzn1i.exeregasm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ximo2ubzn1i.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

regasm.exe

pid	Process
2728	regasm.exe
2728	regasm.exe
2728	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid	Process
2728	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasm.exe

description	pid	Process
Token: SeDebugPrivilege	2728	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exeximo2ubzn1i.exe

description	pid	Process	procid_target
PID 3472 wrote to memory of 4320	3472	941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe	82
PID 3472 wrote to memory of 4320	3472	941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe	82
PID 3472 wrote to memory of 4320	3472	941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe	82
PID 4320 wrote to memory of 2728	4320	ximo2ubzn1i.exe	83
PID 4320 wrote to memory of 2728	4320	ximo2ubzn1i.exe	83
PID 4320 wrote to memory of 2728	4320	ximo2ubzn1i.exe	83
PID 4320 wrote to memory of 2728	4320	ximo2ubzn1i.exe	83
PID 4320 wrote to memory of 2728	4320	ximo2ubzn1i.exe	83
PID 4320 wrote to memory of 2728	4320	ximo2ubzn1i.exe	83
PID 4320 wrote to memory of 2728	4320	ximo2ubzn1i.exe	83
PID 4320 wrote to memory of 2728	4320	ximo2ubzn1i.exe	83

C:\Users\Admin\AppData\Local\Temp\941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe
"C:\Users\Admin\AppData\Local\Temp\941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3472
- C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
  "C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4320
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
    3⤵
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

Filesize
415KB

MD5
54d17a943a0b3aff28a53fd2794c5f72

SHA1
2525d37258ea125f3cf47196cc65df9ff527f959

SHA256
de0bfd56ec715b250c5d981ee474a4e11ef5c69da9b30dbaf7db9bba8c3b31e3

SHA512
369e8204f17a87ea5f445279bbf930fe5e55a3285508c3a46bd1cb5618eba03399a7dcca4fbf1cdc51427741f79fb5b9a9a64ea501dc5e2c10cf572367a8b7fe

Download Submit
memory/2728-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2728-36-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/2728-32-0x0000000005490000-0x000000000549A000-memory.dmp

Filesize
40KB

Download
memory/2728-31-0x00000000050D0000-0x00000000050EE000-memory.dmp

Filesize
120KB

Download
memory/2728-30-0x00000000050C0000-0x00000000050CA000-memory.dmp

Filesize
40KB

Download
memory/2728-28-0x0000000004F90000-0x000000000502C000-memory.dmp

Filesize
624KB

Download
memory/2728-27-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/2728-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2728-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3472-5-0x00000000054D0000-0x00000000054DA000-memory.dmp

Filesize
40KB

Download
memory/3472-20-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/3472-6-0x0000000005A90000-0x0000000005ACC000-memory.dmp

Filesize
240KB

Download
memory/3472-0-0x00000000745CE000-0x00000000745CF000-memory.dmp

Filesize
4KB

Download
memory/3472-4-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/3472-3-0x0000000005540000-0x00000000055D2000-memory.dmp

Filesize
584KB

Download
memory/3472-2-0x0000000005AF0000-0x0000000006094000-memory.dmp

Filesize
5.6MB

Download
memory/3472-1-0x0000000000A60000-0x0000000000ACE000-memory.dmp

Filesize
440KB

Download
memory/4320-22-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/4320-21-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/4320-33-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/4320-35-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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