nanocore | 6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8d

General

Target

6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8dN.exe
Size

416KB
MD5

f6eab5077affa3e10ba6bdca2dc59e40
SHA1

21e27130773611fe0b3fd1fc605e7706895c41eb
SHA256

6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8d
SHA512

6ad02e39595d1fb3122ecd9aa1a7b04cd118312228ad2c9b55e3af7c2efd84b520fad09f5cdcdd590d93987b6af5e4755ff1d9defc4c08709c1b16d61c91b6af
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7y:ITNYrnE3bm/CiejewY5vp

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
Nanocore family
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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8dN.exe

Executes dropped EXE 1 IoCs

pid	Process
2108	ximo2ubzn1i.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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8dN.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 2108 set thread context of 2648	2108	ximo2ubzn1i.exe	85

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	6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8dN.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
2648	regasm.exe
2648	regasm.exe
2648	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2648	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2648	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 2108	2136	6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8dN.exe	84
PID 2136 wrote to memory of 2108	2136	6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8dN.exe	84
PID 2136 wrote to memory of 2108	2136	6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8dN.exe	84
PID 2108 wrote to memory of 2648	2108	ximo2ubzn1i.exe	85
PID 2108 wrote to memory of 2648	2108	ximo2ubzn1i.exe	85
PID 2108 wrote to memory of 2648	2108	ximo2ubzn1i.exe	85
PID 2108 wrote to memory of 2648	2108	ximo2ubzn1i.exe	85
PID 2108 wrote to memory of 2648	2108	ximo2ubzn1i.exe	85
PID 2108 wrote to memory of 2648	2108	ximo2ubzn1i.exe	85
PID 2108 wrote to memory of 2648	2108	ximo2ubzn1i.exe	85
PID 2108 wrote to memory of 2648	2108	ximo2ubzn1i.exe	85

C:\Users\Admin\AppData\Local\Temp\6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8dN.exe
"C:\Users\Admin\AppData\Local\Temp\6f2e9c6c389f07c992bdbc227645b9940a117f7ee23e37dbb0c3afcdbe3d2b8dN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2136
- 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:2108
- - 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:2648

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
416KB

MD5
9b1189b8869f68c97bbda1adf3df7fa6

SHA1
a1baabd0b380f69f32ffd5991ffb6c6f7f7f3336

SHA256
5bffc47baab2edb78713812f1f17c25a80b85da8436e0fb53e108d1a5be76e66

SHA512
323379d890e9260a58076a03b11f3944f52a28b0e21076ee4110dcafb8a3047a5921f53affba1b11e643c1321849ac92a93e1fe7efa2d7b97d9f46c7ec95e125

Download Submit
memory/2108-33-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/2108-35-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/2108-21-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/2108-20-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/2136-3-0x0000000004CE0000-0x0000000004D72000-memory.dmp

Filesize
584KB

Download
memory/2136-6-0x00000000052A0000-0x00000000052DC000-memory.dmp

Filesize
240KB

Download
memory/2136-5-0x0000000004DA0000-0x0000000004DAA000-memory.dmp

Filesize
40KB

Download
memory/2136-4-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/2136-32-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/2136-0-0x000000007530E000-0x000000007530F000-memory.dmp

Filesize
4KB

Download
memory/2136-2-0x0000000005390000-0x0000000005934000-memory.dmp

Filesize
5.6MB

Download
memory/2136-1-0x00000000003D0000-0x000000000043E000-memory.dmp

Filesize
440KB

Download
memory/2648-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2648-27-0x00000000059E0000-0x0000000005A7C000-memory.dmp

Filesize
624KB

Download
memory/2648-29-0x0000000005930000-0x000000000593A000-memory.dmp

Filesize
40KB

Download
memory/2648-30-0x0000000006670000-0x000000000668E000-memory.dmp

Filesize
120KB

Download
memory/2648-31-0x0000000006690000-0x000000000669A000-memory.dmp

Filesize
40KB

Download
memory/2648-26-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/2648-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2648-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2648-36-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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