nanocore | 51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce

General

Target

51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe
Size

416KB
MD5

c456ba51c61c09e99e4a01b13e0a78e6
SHA1

8e4d25ae9f87d90401adea791a0d9d1f2575d1ee
SHA256

51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce
SHA512

2b241bdecdb7555ea36943e7b6ab26c75147c361b09e1bdbbbb01154724419fffc499e6a79dd6d6ce155fc816de4cd33c54a32b385915d5b4d5b38d47721cf2b
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU73:ITNYrnE3bm/CiejewY5v4

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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe

Executes dropped EXE 1 IoCs

pid	Process
1552	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.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 1552 set thread context of 2604	1552	ximo2ubzn1i.exe	94

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	ximo2ubzn1i.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2604	regasm.exe
2604	regasm.exe
2604	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2604	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2604	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4604 wrote to memory of 1552	4604	51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe	93
PID 4604 wrote to memory of 1552	4604	51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe	93
PID 4604 wrote to memory of 1552	4604	51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe	93
PID 1552 wrote to memory of 2604	1552	ximo2ubzn1i.exe	94
PID 1552 wrote to memory of 2604	1552	ximo2ubzn1i.exe	94
PID 1552 wrote to memory of 2604	1552	ximo2ubzn1i.exe	94
PID 1552 wrote to memory of 2604	1552	ximo2ubzn1i.exe	94
PID 1552 wrote to memory of 2604	1552	ximo2ubzn1i.exe	94
PID 1552 wrote to memory of 2604	1552	ximo2ubzn1i.exe	94
PID 1552 wrote to memory of 2604	1552	ximo2ubzn1i.exe	94
PID 1552 wrote to memory of 2604	1552	ximo2ubzn1i.exe	94

C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe
"C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4604
- 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:1552
- - 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:2604

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
089d812cd5d5144d87faa9ddcb458321

SHA1
6f455331b9632dfe79e882cddd229c0e2e83552c

SHA256
8d6c2b1cd5ea2a87efb4d1de72caa85b2bf7e85ab0e938b9e710dd2f78996db9

SHA512
44836cdc1d3b32947da60e28bdd46ef9e572c4519f10ea38a222667a4383a7d3b2fdc1a756a2eeff183789e200b64fdcc798b0513fe0bc6d7105869ef16728eb

Download Submit
memory/1552-35-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/1552-33-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/1552-21-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/1552-20-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/2604-29-0x00000000059B0000-0x00000000059BA000-memory.dmp

Filesize
40KB

Download
memory/2604-27-0x0000000005740000-0x00000000057DC000-memory.dmp

Filesize
624KB

Download
memory/2604-36-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/2604-31-0x0000000006570000-0x000000000657A000-memory.dmp

Filesize
40KB

Download
memory/2604-30-0x0000000005CD0000-0x0000000005CEE000-memory.dmp

Filesize
120KB

Download
memory/2604-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2604-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2604-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2604-26-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/4604-6-0x0000000005110000-0x000000000514C000-memory.dmp

Filesize
240KB

Download
memory/4604-0-0x00000000751AE000-0x00000000751AF000-memory.dmp

Filesize
4KB

Download
memory/4604-3-0x0000000004C80000-0x0000000004D12000-memory.dmp

Filesize
584KB

Download
memory/4604-5-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/4604-32-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/4604-2-0x0000000005190000-0x0000000005734000-memory.dmp

Filesize
5.6MB

Download
memory/4604-1-0x00000000001C0000-0x000000000022E000-memory.dmp

Filesize
440KB

Download
memory/4604-4-0x0000000004C30000-0x0000000004C3A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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