nanocore | d697ba97c44ec3c8ecbee3399326507fb5e4ee1df6307c33bad34bb1709a0530

General

Target

fe271795d46dc79937c4b43ff8642a00N.exe
Size

281KB
MD5

fe271795d46dc79937c4b43ff8642a00
SHA1

47ffe7407aadbb7c3bcb70a28c489633984e3dcb
SHA256

d697ba97c44ec3c8ecbee3399326507fb5e4ee1df6307c33bad34bb1709a0530
SHA512

9f83822481e69ac8f2c5fc07236fbb0e6f2873f812a69224b38e54d0d1be9a0142ea36991da09ce92a81cf48b79d4131416f9ff2887d11ce7b42f15c9aab7949
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfM:boSeGUA5YZazpXUmZhZ6SV

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
2892	a1punf5t2of.exe
2644	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
1460	fe271795d46dc79937c4b43ff8642a00N.exe
2892	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-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	fe271795d46dc79937c4b43ff8642a00N.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 2892 set thread context of 2644	2892	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	fe271795d46dc79937c4b43ff8642a00N.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
2644	a1punf5t2of.exe
2644	a1punf5t2of.exe
2644	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2644	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 2892	1460	fe271795d46dc79937c4b43ff8642a00N.exe	31
PID 1460 wrote to memory of 2892	1460	fe271795d46dc79937c4b43ff8642a00N.exe	31
PID 1460 wrote to memory of 2892	1460	fe271795d46dc79937c4b43ff8642a00N.exe	31
PID 1460 wrote to memory of 2892	1460	fe271795d46dc79937c4b43ff8642a00N.exe	31
PID 1460 wrote to memory of 2892	1460	fe271795d46dc79937c4b43ff8642a00N.exe	31
PID 1460 wrote to memory of 2892	1460	fe271795d46dc79937c4b43ff8642a00N.exe	31
PID 1460 wrote to memory of 2892	1460	fe271795d46dc79937c4b43ff8642a00N.exe	31
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32
PID 2892 wrote to memory of 2644	2892	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\fe271795d46dc79937c4b43ff8642a00N.exe
"C:\Users\Admin\AppData\Local\Temp\fe271795d46dc79937c4b43ff8642a00N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1460
- 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:2892
- - 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:2644

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

\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
281KB

MD5
f5a38f2b34660e4a5307c7b4202e43a7

SHA1
0294e38322d69f5debade1e302bff6b4f5c4d4b8

SHA256
ac58639d39082c67faa625089f28769cb352e31dc664bea0c0450d2175df5a14

SHA512
680300b00b1523d412be42751782f8bac597b247066de4531809afe1526c28d0c201b7be8832ba5559878a16a22ba3195cde57efb2aa1f5c274da90d01c481c7

Download Submit
memory/1460-14-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1460-1-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1460-2-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1460-3-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1460-4-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1460-5-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1460-0-0x0000000074F21000-0x0000000074F22000-memory.dmp

Filesize
4KB

Download
memory/2644-32-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-39-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-38-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2892-19-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2892-21-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2892-15-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2892-20-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2892-16-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2892-18-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2892-17-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2892-41-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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