nanocore | 9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3

General

Target

9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3.exe
Size

413KB
MD5

18ba7739fbe43f651f783c79b7562fb3
SHA1

28d64c6563bc7bf2d2cdaa6b137eab15de743c1f
SHA256

9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3
SHA512

b34b8b82486aeb3c9e8611b14bfbc6cf2cb86b1f2f867b70e6921764ab56c2de6d446012e3b5ff9b4c8ca16ed0eb25ef53554f6744e1bb0947f42a18a6a36a20
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUe:ITNYrnE3bm/CiejewY5vF

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3.exe

Executes dropped EXE 1 IoCs

pid	Process
3480	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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3.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 3480 set thread context of 4640	3480	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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3.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
4640	regasm.exe
4640	regasm.exe
4640	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4640	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4640	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 3480	2656	9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3.exe	82
PID 2656 wrote to memory of 3480	2656	9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3.exe	82
PID 2656 wrote to memory of 3480	2656	9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3.exe	82
PID 3480 wrote to memory of 4640	3480	ximo2ubzn1i.exe	83
PID 3480 wrote to memory of 4640	3480	ximo2ubzn1i.exe	83
PID 3480 wrote to memory of 4640	3480	ximo2ubzn1i.exe	83
PID 3480 wrote to memory of 4640	3480	ximo2ubzn1i.exe	83
PID 3480 wrote to memory of 4640	3480	ximo2ubzn1i.exe	83
PID 3480 wrote to memory of 4640	3480	ximo2ubzn1i.exe	83
PID 3480 wrote to memory of 4640	3480	ximo2ubzn1i.exe	83
PID 3480 wrote to memory of 4640	3480	ximo2ubzn1i.exe	83

C:\Users\Admin\AppData\Local\Temp\9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3.exe
"C:\Users\Admin\AppData\Local\Temp\9f51d9fa2d90c6185f9d6ccce80ce773cd2b9658e4e93e4aa938c705c3c38fc3.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2656
- 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:3480
- - 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:4640

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
413KB

MD5
f1b32749ba3a83ea3618befe732db27f

SHA1
2360573fa4618010799ee9da87f011e9ca65bc3f

SHA256
fa29fbc85531d998cc0fadf01f7b84fb85a263442617fabd11586c89eaa101b3

SHA512
5e943a65c9c4b408ee7b4f80078e62473998c1c2625a3405dfe0f3359f0e2e6faa37b6e37653503d151cbdfce3a3a94f68f4e21f12e1c0db3f652b213c7ee981

Download Submit
memory/2656-21-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/2656-3-0x00000000054E0000-0x0000000005572000-memory.dmp

Filesize
584KB

Download
memory/2656-4-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/2656-5-0x00000000055A0000-0x00000000055AA000-memory.dmp

Filesize
40KB

Download
memory/2656-6-0x00000000058F0000-0x000000000592C000-memory.dmp

Filesize
240KB

Download
memory/2656-1-0x0000000000AA0000-0x0000000000B0E000-memory.dmp

Filesize
440KB

Download
memory/2656-0-0x00000000748AE000-0x00000000748AF000-memory.dmp

Filesize
4KB

Download
memory/2656-2-0x0000000005BA0000-0x0000000006144000-memory.dmp

Filesize
5.6MB

Download
memory/3480-33-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/3480-20-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/3480-22-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/3480-35-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4640-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4640-27-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4640-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4640-30-0x0000000006110000-0x000000000611A000-memory.dmp

Filesize
40KB

Download
memory/4640-31-0x00000000061A0000-0x00000000061BE000-memory.dmp

Filesize
120KB

Download
memory/4640-32-0x00000000063E0000-0x00000000063EA000-memory.dmp

Filesize
40KB

Download
memory/4640-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4640-28-0x00000000054F0000-0x000000000558C000-memory.dmp

Filesize
624KB

Download
memory/4640-36-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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