nanocore | d1f5f67c3e2af0bfa1d6ee0ebcacd78f5218483daf57752f58b8f961e139c1cb

General

Target

ec1f00a8fb7d81653926ba137961f4b0N.exe
Size

282KB
MD5

ec1f00a8fb7d81653926ba137961f4b0
SHA1

932e104b7a87ca344a3fa7852edb2d063597c53d
SHA256

d1f5f67c3e2af0bfa1d6ee0ebcacd78f5218483daf57752f58b8f961e139c1cb
SHA512

e2d785eb213efe8a3fc8efceb5113c13e0ad4be385f8ff4e90a18003a2fd8584128d7da46e692171294a01092a4f7670c9cce54de0295b4f8d1d2361eece3af5
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfb:boSeGUA5YZazpXUmZhZ6S+

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

Executes dropped EXE 2 IoCs

pid	Process
2716	a1punf5t2of.exe
2776	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2548	ec1f00a8fb7d81653926ba137961f4b0N.exe
2716	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-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	ec1f00a8fb7d81653926ba137961f4b0N.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 2716 set thread context of 2776	2716	a1punf5t2of.exe	32

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	ec1f00a8fb7d81653926ba137961f4b0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2776	a1punf5t2of.exe
2776	a1punf5t2of.exe
2776	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2776	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2776	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 2716	2548	ec1f00a8fb7d81653926ba137961f4b0N.exe	31
PID 2548 wrote to memory of 2716	2548	ec1f00a8fb7d81653926ba137961f4b0N.exe	31
PID 2548 wrote to memory of 2716	2548	ec1f00a8fb7d81653926ba137961f4b0N.exe	31
PID 2548 wrote to memory of 2716	2548	ec1f00a8fb7d81653926ba137961f4b0N.exe	31
PID 2548 wrote to memory of 2716	2548	ec1f00a8fb7d81653926ba137961f4b0N.exe	31
PID 2548 wrote to memory of 2716	2548	ec1f00a8fb7d81653926ba137961f4b0N.exe	31
PID 2548 wrote to memory of 2716	2548	ec1f00a8fb7d81653926ba137961f4b0N.exe	31
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32
PID 2716 wrote to memory of 2776	2716	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\ec1f00a8fb7d81653926ba137961f4b0N.exe
"C:\Users\Admin\AppData\Local\Temp\ec1f00a8fb7d81653926ba137961f4b0N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2716
- - 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:2776

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

System Information Discovery

2

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
92c6beccc68c24a73b287aba8f5d62e6

SHA1
60e3bb623d90814eda08eb6bb7db54b2ca19bd79

SHA256
8bf1f049f196c3bb028df0997d528a39bed3954d40dd8c4e9f7e2cfab4a9b4a4

SHA512
715dffe8b28a58eb097c7b66b4f7ac1260b55446efe87373f5dd7b0d805c41c4edbadd510d4fb364128553c1d29560710964e1a8a8b132b5b1f95c75dcadc288

Download Submit
memory/2548-14-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2548-1-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2548-2-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2548-3-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2548-4-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2548-5-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2548-0-0x0000000074C51000-0x0000000074C52000-memory.dmp

Filesize
4KB

Download
memory/2716-17-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2716-16-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2716-15-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2716-18-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2716-19-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2716-20-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2716-37-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download
memory/2776-34-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2776-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-35-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads