nanocore | 04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f

General

Target

04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
Size

810KB
MD5

43052439d057549a3dbc5307424927d5
SHA1

69bcbb9df5b4dbc50839a96ba64a03b534919f06
SHA256

04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f
SHA512

b3592d217d5e413a08c62e2aaac621e056497af8cedf3d6a736f31343abe80637ce9eb11a29cd0f81ae86e6ffdea7e0d50b34129b22855dfde5f6fd5a1415f54
SSDEEP

24576:A85rNl0k15HDxrUH3sY20fNjaj5sO9VaQSs:A8nl0A5HDx90fNk5sO9nl

Score

10^/10

nanocore discovery evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

brewsterchristophe.ddns.net:5899

194,147,5,75:5899

Mutex

b8aebc29-8c64-444f-99e6-dc4122e9bbfc

Attributes

activate_away_mode
true
backup_connection_host
194,147,5,75
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-04-29T03:26:40.572298236Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5899
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
b8aebc29-8c64-444f-99e6-dc4122e9bbfc
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
brewsterchristophe.ddns.net
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1936	powershell.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Service = "C:\\Program Files (x86)\\WPA Service\\wpasv.exe"	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.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	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2484 set thread context of 1648	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	34

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\WPA Service\wpasv.exe	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
File opened for modification	C:\Program Files (x86)\WPA Service\wpasv.exe	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

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 6 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2664	schtasks.exe
2608	schtasks.exe
2804	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1936	powershell.exe
1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1936	powershell.exe
Token: SeDebugPrivilege	1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 1936	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	30
PID 2484 wrote to memory of 1936	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	30
PID 2484 wrote to memory of 1936	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	30
PID 2484 wrote to memory of 1936	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	30
PID 2484 wrote to memory of 2664	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	32
PID 2484 wrote to memory of 2664	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	32
PID 2484 wrote to memory of 2664	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	32
PID 2484 wrote to memory of 2664	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	32
PID 2484 wrote to memory of 1648	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	34
PID 2484 wrote to memory of 1648	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	34
PID 2484 wrote to memory of 1648	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	34
PID 2484 wrote to memory of 1648	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	34
PID 2484 wrote to memory of 1648	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	34
PID 2484 wrote to memory of 1648	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	34
PID 2484 wrote to memory of 1648	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	34
PID 2484 wrote to memory of 1648	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	34
PID 2484 wrote to memory of 1648	2484	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	34
PID 1648 wrote to memory of 2608	1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 1648 wrote to memory of 2608	1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 1648 wrote to memory of 2608	1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 1648 wrote to memory of 2608	1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 1648 wrote to memory of 2804	1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	37
PID 1648 wrote to memory of 2804	1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	37
PID 1648 wrote to memory of 2804	1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	37
PID 1648 wrote to memory of 2804	1648	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	37

C:\Users\Admin\AppData\Local\Temp\04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
"C:\Users\Admin\AppData\Local\Temp\04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TYWfRu.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1936
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TYWfRu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp81C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2664
- C:\Users\Admin\AppData\Local\Temp\04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
  "C:\Users\Admin\AppData\Local\Temp\04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1648
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "WPA Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE05.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2608
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "WPA Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF7C.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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\Local\Temp\tmp81C.tmp

Filesize
1KB

MD5
08bb8e7f2ff051f88a83aa860c17f45b

SHA1
4a55a01b88d18f5dd5bb2e057faa2ba397416797

SHA256
043be0e16865a92c4f3064fd6fc340b72c318061a76cc64c5e67ec86f4625110

SHA512
c683f7cad76baf72cbb2060a0f89110948c746902cfa45e54a828efa3f54de94e670687c7aec1e75726037c853ecbd068befa8d1bee4bfadeca47a3e70baec7b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE05.tmp

Filesize
1KB

MD5
a591a76fa75368c8204f7b06eb32b266

SHA1
eeb86563fae956e79a000f489962101a332b6a09

SHA256
a2ce4b2c85707d41c214e7f2631e45d9c05e2e8980761a4f402849ae76ef7ff2

SHA512
fef6b7d5fcacf0e769703cee1a53aa62274ccce2534c9a340888c1c442adad6d9de572b9a66a726bf90c6deb3e5a2ce4cd9caf11ad330fe879f403de51741673

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF7C.tmp

Filesize
1KB

MD5
21de6c3a6440d917bdbb4b491191d9b2

SHA1
c63c300affe7147910dc4544d2d5f3029bf321a6

SHA256
23af17733a3882cdd82a5bbc321d896b2430dc1bb4b4ac034d129cde5027afc4

SHA512
dcd1c464ed36593b990e072940ab415804ef8076743015fff4939211e30e436beb7ce6af3072769abe0214f737cedb210d2b45e6e90da20dac54c3945b11575f

Download Submit
memory/1648-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1648-36-0x0000000000960000-0x000000000096A000-memory.dmp

Filesize
40KB

Download
memory/1648-37-0x0000000000AD0000-0x0000000000AEE000-memory.dmp

Filesize
120KB

Download
memory/1648-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1648-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1648-38-0x0000000000970000-0x000000000097A000-memory.dmp

Filesize
40KB

Download
memory/1648-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1648-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1648-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1648-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1648-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2484-6-0x00000000004A0000-0x00000000004AA000-memory.dmp

Filesize
40KB

Download
memory/2484-15-0x0000000004C60000-0x0000000004C9A000-memory.dmp

Filesize
232KB

Download
memory/2484-7-0x0000000004EB0000-0x0000000004F22000-memory.dmp

Filesize
456KB

Download
memory/2484-0-0x000000007456E000-0x000000007456F000-memory.dmp

Filesize
4KB

Download
memory/2484-28-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download
memory/2484-5-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download
memory/2484-4-0x000000007456E000-0x000000007456F000-memory.dmp

Filesize
4KB

Download
memory/2484-3-0x0000000000350000-0x0000000000366000-memory.dmp

Filesize
88KB

Download
memory/2484-2-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download
memory/2484-1-0x0000000000B50000-0x0000000000C20000-memory.dmp

Filesize
832KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads