nanocore | d2e5d59f035651d13dc99c2b12fab6c47a0cb546f4a4ef90f7feca35e30cf117

General

Target

884f649fd46f22effa16f5563a469aa0N.exe
Size

282KB
MD5

884f649fd46f22effa16f5563a469aa0
SHA1

7a0ee024d3c110e2fc49ff318bd02bce00bdbf76
SHA256

d2e5d59f035651d13dc99c2b12fab6c47a0cb546f4a4ef90f7feca35e30cf117
SHA512

532677b6e9a12f4b54046ea5d38ffb2617eaa03aaea0e9f32242fc6ee89a01a360c2028c58d4c7054d9453dbf28583e707536619034b9ec402451d3d31cb6912
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkflb:boSeGUA5YZazpXUmZhZ6S8

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sysupdate24.ddns.net:45400

Mutex

ae82ab7f-db07-49ee-9d2b-76075d76f37f

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
buffer_size
65535
build_time
2020-04-24T17:41:53.492468936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
45400
default_group
Default
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
ae82ab7f-db07-49ee-9d2b-76075d76f37f
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
sysupdate24.ddns.net
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	884f649fd46f22effa16f5563a469aa0N.exe

Executes dropped EXE 2 IoCs

pid	Process
4604	a1punf5t2of.exe
3620	a1punf5t2of.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\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	884f649fd46f22effa16f5563a469aa0N.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	a1punf5t2of.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4604 set thread context of 3620	4604	a1punf5t2of.exe	97

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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	884f649fd46f22effa16f5563a469aa0N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3620	a1punf5t2of.exe
3620	a1punf5t2of.exe
3620	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3620	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3620	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 4604	1544	884f649fd46f22effa16f5563a469aa0N.exe	96
PID 1544 wrote to memory of 4604	1544	884f649fd46f22effa16f5563a469aa0N.exe	96
PID 1544 wrote to memory of 4604	1544	884f649fd46f22effa16f5563a469aa0N.exe	96
PID 4604 wrote to memory of 3620	4604	a1punf5t2of.exe	97
PID 4604 wrote to memory of 3620	4604	a1punf5t2of.exe	97
PID 4604 wrote to memory of 3620	4604	a1punf5t2of.exe	97
PID 4604 wrote to memory of 3620	4604	a1punf5t2of.exe	97
PID 4604 wrote to memory of 3620	4604	a1punf5t2of.exe	97
PID 4604 wrote to memory of 3620	4604	a1punf5t2of.exe	97
PID 4604 wrote to memory of 3620	4604	a1punf5t2of.exe	97
PID 4604 wrote to memory of 3620	4604	a1punf5t2of.exe	97

C:\Users\Admin\AppData\Local\Temp\884f649fd46f22effa16f5563a469aa0N.exe
"C:\Users\Admin\AppData\Local\Temp\884f649fd46f22effa16f5563a469aa0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4604
- - C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
    "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
    3⤵
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3620

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\b1b2dqljdx3\a1punf5t2of.exe

Filesize
282KB

MD5
c4639171f1b87876262672ebe5295f98

SHA1
6c85c079b60a4b64aa1fe81ac90851866362b2e5

SHA256
cfae2a3fc2e567631ddaea817acb9d40c83394694c2cabb81c73b78b492538c7

SHA512
1b627ff5b079e8106d9d9d545e2667424c3520ce128cd39c2dec46b9749a05ea7bc20d376376730c3550403a4b3595be38c0b12478c165f8dee768a1d5a7da44

Download Submit
memory/1544-0-0x0000000074862000-0x0000000074863000-memory.dmp

Filesize
4KB

Download
memory/1544-1-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/1544-2-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/1544-3-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/1544-17-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/3620-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3620-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3620-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3620-25-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/3620-26-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/3620-27-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/3620-29-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/3620-33-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/3620-34-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4604-19-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4604-18-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4604-30-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4604-32-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads