nanocore | 7c4fa96c97523a5f5a13dbb07d7a94fb9b7c015da2c351105762014face8d611

General

Target

4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe
Size

409KB
MD5

4d1eaaf8e803d04c1e5abadd2c5e4a50
SHA1

f5b57ad819593dd69d45fe43a3ef18e7c659bf8f
SHA256

7c4fa96c97523a5f5a13dbb07d7a94fb9b7c015da2c351105762014face8d611
SHA512

76a859ac73f47d1f2c832e5a3be4e762d043afdc3f08f8469b845a7d8a0b3d75a67264bac811f75adaceafa4f8f9d273e635c39ee9091ddfd551b8ab597a6f9c
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+t:ITNYrnE3bm/CiejewY5vV

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

Executes dropped EXE 1 IoCs

pid	Process
2856	ximo2ubzn1i.exe

Loads dropped DLL 1 IoCs

pid	Process
2148	4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	4d1eaaf8e803d04c1e5abadd2c5e4a50N.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	regasm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2856 set thread context of 2612	2856	ximo2ubzn1i.exe	32

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4d1eaaf8e803d04c1e5abadd2c5e4a50N.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

pid	Process
2612	regasm.exe
2612	regasm.exe
2612	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2612	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2612	regasm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2856	2148	4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe	31
PID 2148 wrote to memory of 2856	2148	4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe	31
PID 2148 wrote to memory of 2856	2148	4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe	31
PID 2148 wrote to memory of 2856	2148	4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe	31
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32
PID 2856 wrote to memory of 2612	2856	ximo2ubzn1i.exe	32

C:\Users\Admin\AppData\Local\Temp\4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe
"C:\Users\Admin\AppData\Local\Temp\4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2148
- 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:2856
- - 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:2612

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

System Information Discovery

2

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

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

Filesize
409KB

MD5
a8e56c1bcf6741357103388b0e5acf31

SHA1
e2c89097a39d41d08d2eb466635d4b91e2054ef3

SHA256
0695c0a446af9349562773e16c8be234c5861d04eeab93a760af553e267d0398

SHA512
fb9552c153c92a9e6764d0046e8df04304f56040698e7390dd96ec28f84781ba8c380cf2c51572b162088cbe6c785c86d47a8dd8c6bef392cbe01cb0e8038581

Download Submit
memory/2148-12-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download
memory/2148-1-0x00000000013E0000-0x000000000144E000-memory.dmp

Filesize
440KB

Download
memory/2148-2-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download
memory/2148-3-0x0000000000940000-0x000000000097C000-memory.dmp

Filesize
240KB

Download
memory/2148-0-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

Filesize
4KB

Download
memory/2612-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-32-0x0000000000750000-0x000000000075A000-memory.dmp

Filesize
40KB

Download
memory/2612-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2612-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-31-0x00000000004A0000-0x00000000004BE000-memory.dmp

Filesize
120KB

Download
memory/2612-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-30-0x0000000000450000-0x000000000045A000-memory.dmp

Filesize
40KB

Download
memory/2612-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2856-13-0x0000000000A60000-0x0000000000ACE000-memory.dmp

Filesize
440KB

Download
memory/2856-14-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download
memory/2856-15-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download
memory/2856-33-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download
memory/2856-34-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads