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

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe

Executes dropped EXE 1 IoCs

pid	Process
4584	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-1-5-21-656926755-4116854191-210765258-1000\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 4584 set thread context of 4740	4584	ximo2ubzn1i.exe	90

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
4740	regasm.exe
4740	regasm.exe
4740	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4740	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4740	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1140 wrote to memory of 4584	1140	4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe	89
PID 1140 wrote to memory of 4584	1140	4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe	89
PID 1140 wrote to memory of 4584	1140	4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe	89
PID 4584 wrote to memory of 4740	4584	ximo2ubzn1i.exe	90
PID 4584 wrote to memory of 4740	4584	ximo2ubzn1i.exe	90
PID 4584 wrote to memory of 4740	4584	ximo2ubzn1i.exe	90
PID 4584 wrote to memory of 4740	4584	ximo2ubzn1i.exe	90
PID 4584 wrote to memory of 4740	4584	ximo2ubzn1i.exe	90
PID 4584 wrote to memory of 4740	4584	ximo2ubzn1i.exe	90
PID 4584 wrote to memory of 4740	4584	ximo2ubzn1i.exe	90
PID 4584 wrote to memory of 4740	4584	ximo2ubzn1i.exe	90

C:\Users\Admin\AppData\Local\Temp\4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe
"C:\Users\Admin\AppData\Local\Temp\4d1eaaf8e803d04c1e5abadd2c5e4a50N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1140
- 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:4584
- - 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:4740

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
409KB

MD5
dd38c3652761d292ee3a522d4f179273

SHA1
05e50f65473669c2b58ef96dca8eb4a345f7e1c9

SHA256
cefe2a38fe5d162d1f35bc99199f8ba06f7b3f6a609214dc5955519963fa349f

SHA512
61f15cb8dd80d2ef3c5eaaaf229e3a0b8ddb1df191855f025af2c90fccad1fa2ce883638784f246807c31a1e4a4a9613c1a029d629937265d85c085f2001500d

Download Submit
memory/1140-21-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1140-1-0x0000000000900000-0x000000000096E000-memory.dmp

Filesize
440KB

Download
memory/1140-2-0x0000000005950000-0x0000000005EF4000-memory.dmp

Filesize
5.6MB

Download
memory/1140-3-0x00000000053A0000-0x0000000005432000-memory.dmp

Filesize
584KB

Download
memory/1140-4-0x0000000005360000-0x000000000536A000-memory.dmp

Filesize
40KB

Download
memory/1140-5-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1140-6-0x0000000005720000-0x000000000575C000-memory.dmp

Filesize
240KB

Download
memory/1140-0-0x000000007536E000-0x000000007536F000-memory.dmp

Filesize
4KB

Download
memory/4584-22-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4584-20-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4584-33-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4584-35-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4740-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4740-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4740-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4740-27-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4740-28-0x0000000004E40000-0x0000000004EDC000-memory.dmp

Filesize
624KB

Download
memory/4740-30-0x0000000004F90000-0x0000000004F9A000-memory.dmp

Filesize
40KB

Download
memory/4740-31-0x0000000005330000-0x000000000534E000-memory.dmp

Filesize
120KB

Download
memory/4740-32-0x0000000005D40000-0x0000000005D4A000-memory.dmp

Filesize
40KB

Download
memory/4740-36-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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