nanocore | 1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5ee

General

Target

1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5eeN.exe
Size

415KB
MD5

9dfed156c0234255fc2f046e614cac30
SHA1

133aaa800be863f5c4104204783d3d64f1b236bc
SHA256

1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5ee
SHA512

461bd69d562a44400fe56f1f5b76c4fc30c52bedb00bcc8c943c2749e54f8bb5143bd396d7556ab0fc89203f114fc4ad627479db646ceb8d8eb65a74209407ee
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUb: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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5eeN.exe

Executes dropped EXE 1 IoCs

pid	Process
1216	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5eeN.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 1216 set thread context of 3200	1216	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	1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5eeN.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
3200	regasm.exe
3200	regasm.exe
3200	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3200	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3200	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 1216	2248	1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5eeN.exe	84
PID 2248 wrote to memory of 1216	2248	1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5eeN.exe	84
PID 2248 wrote to memory of 1216	2248	1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5eeN.exe	84
PID 1216 wrote to memory of 3200	1216	ximo2ubzn1i.exe	85
PID 1216 wrote to memory of 3200	1216	ximo2ubzn1i.exe	85
PID 1216 wrote to memory of 3200	1216	ximo2ubzn1i.exe	85
PID 1216 wrote to memory of 3200	1216	ximo2ubzn1i.exe	85
PID 1216 wrote to memory of 3200	1216	ximo2ubzn1i.exe	85
PID 1216 wrote to memory of 3200	1216	ximo2ubzn1i.exe	85
PID 1216 wrote to memory of 3200	1216	ximo2ubzn1i.exe	85
PID 1216 wrote to memory of 3200	1216	ximo2ubzn1i.exe	85

C:\Users\Admin\AppData\Local\Temp\1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5eeN.exe
"C:\Users\Admin\AppData\Local\Temp\1571fcb02c656912a05c6bc96ef9e7e98cf9273210e1a9d13675a8ec94a6c5eeN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2248
- 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:1216
- - 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:3200

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

Filesize
415KB

MD5
882a2b6ca4f8cdff93b1039ac22bcbc0

SHA1
94a70384fe4aecb3ba98604e5745d94ee3e2f53c

SHA256
56b6dcbb4bb6b1a8c896b734c1b27c7247622bb762a1369cad2f32e347be2c09

SHA512
6192c3e17301a00a3a2d1124ed8d72cf6583afab8d83213c9ad042528727f8f6bd7b5776da5f05ef7799d66c3ca3c42ca612104317d507f273ff6e5b7d520057

Download Submit
memory/1216-35-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/1216-33-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/1216-22-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/1216-21-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/2248-5-0x0000000004CE0000-0x0000000004CEA000-memory.dmp

Filesize
40KB

Download
memory/2248-6-0x0000000005880000-0x00000000058BC000-memory.dmp

Filesize
240KB

Download
memory/2248-0-0x00000000746CE000-0x00000000746CF000-memory.dmp

Filesize
4KB

Download
memory/2248-20-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/2248-4-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/2248-3-0x0000000004D00000-0x0000000004D92000-memory.dmp

Filesize
584KB

Download
memory/2248-1-0x00000000003B0000-0x000000000041E000-memory.dmp

Filesize
440KB

Download
memory/2248-2-0x00000000051D0000-0x0000000005774000-memory.dmp

Filesize
5.6MB

Download
memory/3200-27-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/3200-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3200-28-0x0000000004E60000-0x0000000004EFC000-memory.dmp

Filesize
624KB

Download
memory/3200-30-0x00000000050B0000-0x00000000050BA000-memory.dmp

Filesize
40KB

Download
memory/3200-31-0x0000000005260000-0x000000000527E000-memory.dmp

Filesize
120KB

Download
memory/3200-32-0x0000000005D30000-0x0000000005D3A000-memory.dmp

Filesize
40KB

Download
memory/3200-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3200-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3200-36-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads