nanocore | 5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711f

General

Target

5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711fN.exe
Size

416KB
MD5

f1724a345049245744f8b76c381bc860
SHA1

a7b1bde04a74aaf708612dd9b36c323c73a01908
SHA256

5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711f
SHA512

165dd2513cd2f4ff22274caa6c61d854c48928e652152e000e455888b6bf0a07738d90c19fc74330570e79b5ff0e61e35d3f3d3c584ddfc9bd0ce917aa131b40
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7v:ITNYrnE3bm/CiejewY5vg

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711fN.exe

Executes dropped EXE 1 IoCs

pid	Process
2588	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711fN.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 2588 set thread context of 4020	2588	ximo2ubzn1i.exe	86

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	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ximo2ubzn1i.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4020	regasm.exe
4020	regasm.exe
4020	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4020	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4020	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4044 wrote to memory of 2588	4044	5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711fN.exe	85
PID 4044 wrote to memory of 2588	4044	5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711fN.exe	85
PID 4044 wrote to memory of 2588	4044	5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711fN.exe	85
PID 2588 wrote to memory of 4020	2588	ximo2ubzn1i.exe	86
PID 2588 wrote to memory of 4020	2588	ximo2ubzn1i.exe	86
PID 2588 wrote to memory of 4020	2588	ximo2ubzn1i.exe	86
PID 2588 wrote to memory of 4020	2588	ximo2ubzn1i.exe	86
PID 2588 wrote to memory of 4020	2588	ximo2ubzn1i.exe	86
PID 2588 wrote to memory of 4020	2588	ximo2ubzn1i.exe	86
PID 2588 wrote to memory of 4020	2588	ximo2ubzn1i.exe	86
PID 2588 wrote to memory of 4020	2588	ximo2ubzn1i.exe	86

C:\Users\Admin\AppData\Local\Temp\5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711fN.exe
"C:\Users\Admin\AppData\Local\Temp\5a87d04394f9a3c59497f752a7086af0cd49241962a2f2b73e76b36833bd711fN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4044
- 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:2588
- - 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:4020

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
3d764e60ac8ac34f0a27ceb1a598e651

SHA1
2a7cbfa171445a0585450ae3614039738739867d

SHA256
288074dcda4f7d92610d5cf7e2a63b5d12d04554cc7cd8eb7b988380c158a240

SHA512
59341222b524e373a2b2b7c10c0c4e1ad8e32dda05731ae4559e61becad62aae99fc55fd5ca12fca32f9265d44da2d411b29bbab868ddb7799fd2422cf6d706a

Download Submit
memory/2588-35-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/2588-33-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/2588-22-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/2588-20-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/4020-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4020-30-0x0000000005540000-0x000000000554A000-memory.dmp

Filesize
40KB

Download
memory/4020-36-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/4020-32-0x0000000005A40000-0x0000000005A4A000-memory.dmp

Filesize
40KB

Download
memory/4020-31-0x00000000058C0000-0x00000000058DE000-memory.dmp

Filesize
120KB

Download
memory/4020-27-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/4020-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4020-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4020-28-0x0000000005550000-0x00000000055EC000-memory.dmp

Filesize
624KB

Download
memory/4044-3-0x0000000004D40000-0x0000000004DD2000-memory.dmp

Filesize
584KB

Download
memory/4044-0-0x0000000074F6E000-0x0000000074F6F000-memory.dmp

Filesize
4KB

Download
memory/4044-21-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/4044-5-0x0000000004F00000-0x0000000004F0A000-memory.dmp

Filesize
40KB

Download
memory/4044-6-0x00000000058D0000-0x000000000590C000-memory.dmp

Filesize
240KB

Download
memory/4044-2-0x00000000052F0000-0x0000000005894000-memory.dmp

Filesize
5.6MB

Download
memory/4044-1-0x00000000002F0000-0x000000000035E000-memory.dmp

Filesize
440KB

Download
memory/4044-4-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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