nanocore | 7368746a64683a8f9a810dc983e80da9cb7c3b5f5c1d65da8c980135c383647c

Analysis

max time kernel
117s
max time network
150s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19-09-2024 06:50

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

PI-100957Revisar fatura.rtf
Size

718KB
MD5

9f9efa8ebc90bdbac43ec953e9e78a53
SHA1

e4d8c70f54ad1559bd51293e8032550fadbf6a3b
SHA256

7368746a64683a8f9a810dc983e80da9cb7c3b5f5c1d65da8c980135c383647c
SHA512

8c7a6fe07038a7ec47d04b385c4a38915da03290a2f52504b9d9cb6e71700f7d2c0ee15164d48e062fbee38bef79976842649ed92f3f78dc7f483fc7435d2056
SSDEEP

6144:CwAYwAYwAhhbSx///WCWOy29O28f8yNFPJMS8DFdm:e

Score

10^/10

nanocore discovery evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

blv23728.ddns.net:6110

127.0.0.1:6110

Mutex

c04f2f08-744f-4293-8ea1-2fca37d145bf

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2024-06-30T19:46:18.917482936Z
bypass_user_account_control
false
bypass_user_account_control_data
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
6110
default_group
C3C3
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
c04f2f08-744f-4293-8ea1-2fca37d145bf
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
blv23728.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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	2788	EQNEDT32.EXE

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
2192	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2264	cfeslegplug81920.exe
3036	cfeslegplug81920.exe

Loads dropped DLL 2 IoCs

pid	Process
2788	EQNEDT32.EXE
2788	EQNEDT32.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\PCI Manager = "C:\\Program Files (x86)\\PCI Manager\\pcimgr.exe"	cfeslegplug81920.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	cfeslegplug81920.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2264 set thread context of 3036	2264	cfeslegplug81920.exe	37

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\PCI Manager\pcimgr.exe	cfeslegplug81920.exe
File created	C:\Program Files (x86)\PCI Manager\pcimgr.exe	cfeslegplug81920.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.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 7 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	powershell.exe
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	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cfeslegplug81920.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cfeslegplug81920.exe

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
2788	EQNEDT32.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2372	schtasks.exe
736	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2196	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2192	powershell.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe
3036	cfeslegplug81920.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3036	cfeslegplug81920.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2192	powershell.exe
Token: SeDebugPrivilege	3036	cfeslegplug81920.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2196	WINWORD.EXE
2196	WINWORD.EXE

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2264	2788	EQNEDT32.EXE	32
PID 2788 wrote to memory of 2264	2788	EQNEDT32.EXE	32
PID 2788 wrote to memory of 2264	2788	EQNEDT32.EXE	32
PID 2788 wrote to memory of 2264	2788	EQNEDT32.EXE	32
PID 2196 wrote to memory of 2444	2196	WINWORD.EXE	34
PID 2196 wrote to memory of 2444	2196	WINWORD.EXE	34
PID 2196 wrote to memory of 2444	2196	WINWORD.EXE	34
PID 2196 wrote to memory of 2444	2196	WINWORD.EXE	34
PID 2264 wrote to memory of 2192	2264	cfeslegplug81920.exe	35
PID 2264 wrote to memory of 2192	2264	cfeslegplug81920.exe	35
PID 2264 wrote to memory of 2192	2264	cfeslegplug81920.exe	35
PID 2264 wrote to memory of 2192	2264	cfeslegplug81920.exe	35
PID 2264 wrote to memory of 3036	2264	cfeslegplug81920.exe	37
PID 2264 wrote to memory of 3036	2264	cfeslegplug81920.exe	37
PID 2264 wrote to memory of 3036	2264	cfeslegplug81920.exe	37
PID 2264 wrote to memory of 3036	2264	cfeslegplug81920.exe	37
PID 2264 wrote to memory of 3036	2264	cfeslegplug81920.exe	37
PID 2264 wrote to memory of 3036	2264	cfeslegplug81920.exe	37
PID 2264 wrote to memory of 3036	2264	cfeslegplug81920.exe	37
PID 2264 wrote to memory of 3036	2264	cfeslegplug81920.exe	37
PID 2264 wrote to memory of 3036	2264	cfeslegplug81920.exe	37
PID 3036 wrote to memory of 736	3036	cfeslegplug81920.exe	38
PID 3036 wrote to memory of 736	3036	cfeslegplug81920.exe	38
PID 3036 wrote to memory of 736	3036	cfeslegplug81920.exe	38
PID 3036 wrote to memory of 736	3036	cfeslegplug81920.exe	38
PID 3036 wrote to memory of 2372	3036	cfeslegplug81920.exe	40
PID 3036 wrote to memory of 2372	3036	cfeslegplug81920.exe	40
PID 3036 wrote to memory of 2372	3036	cfeslegplug81920.exe	40
PID 3036 wrote to memory of 2372	3036	cfeslegplug81920.exe	40

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\PI-100957Revisar fatura.rtf"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2444

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Users\Admin\AppData\Roaming\cfeslegplug81920.exe
  "C:\Users\Admin\AppData\Roaming\cfeslegplug81920.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2264
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\cfeslegplug81920.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2192
- - C:\Users\Admin\AppData\Roaming\cfeslegplug81920.exe
    "C:\Users\Admin\AppData\Roaming\cfeslegplug81920.exe"
    3⤵
    - Executes dropped EXE
    - 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:3036
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "PCI Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp83C0.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:736
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "PCI Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp843E.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2372

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Exploitation for Client Execution

T1203

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp83C0.tmp

Filesize
1KB

MD5
5f3e71f47cbd258565c2a1198224bb1c

SHA1
64fd14e6e09855205330e3c907bb4e3099649a5c

SHA256
fb6c8d1d93d123bc2870b801568588ba3f7174340d0cc768846905850cfe60dd

SHA512
ae49e362707ab6f98ad1132a92dc131f044d74fbce39688aba03fcf2860caa7c1f30fa57c9f938b59106b226caaaf3da31313767388e28205f4a69b4eaedd971

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp843E.tmp

Filesize
1KB

MD5
da7aec92f4b1e721f6eeccec52db4901

SHA1
e1bc32c2277c42aec2356f6242ee427af53c2a52

SHA256
7bcfd205f07bffa61c788644c1d6639d03126c46fdbd6550f7e21795dc78b3c0

SHA512
340e234cdfb1b327369378131629f0ff5538c6a1c578c59bfc1b66442ff3f5793f119db13b8d3f158969071eb0fc0c7fbe5c79094572fac0cea528489bf11720

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

Filesize
19KB

MD5
e40c16ea679d2e5ca876a0c4efff1c4b

SHA1
0f4ce84ce48107e4e663750960f84549705ccdbd

SHA256
4745c0bed9eb1fa2a346a12ed7d15f4882ace3ad954c965092dc0e8920db1dea

SHA512
69f946a66f1a962d49ea7bbbaf2dc48031bb26585c6acac90155e883e2a263ad7e7ac368b922a637cf307a0961321fb0bf31d078f0363be1c347881bf7f032a6

Download Submit
C:\Users\Admin\AppData\Roaming\cfeslegplug81920.exe

Filesize
602KB

MD5
d96d267f1c0910104e8d86d776b92639

SHA1
45048b363fe8b3a6a0f779220c677190eb951c3e

SHA256
9b3e8a74be2f9bc8f59d95b7c4e24c1e2cfc3a10309202620e1aafa9e93d14bc

SHA512
91f8fe3e4e1ea2d69809b9724c8f8426937ef0fdc4197fff6c0e8ebd8e535c70840e475cf93508cdad2f8b12e55c2363c441f2e41312ad6cb6649181477ad00e

Download Submit
memory/2196-93-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2196-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2196-2-0x0000000070B4D000-0x0000000070B58000-memory.dmp

Filesize
44KB

Download
memory/2196-0-0x000000002F671000-0x000000002F672000-memory.dmp

Filesize
4KB

Download
memory/2196-25-0x0000000070B4D000-0x0000000070B58000-memory.dmp

Filesize
44KB

Download
memory/2264-19-0x0000000000C40000-0x0000000000CD6000-memory.dmp

Filesize
600KB

Download
memory/2264-27-0x0000000004B10000-0x0000000004B8A000-memory.dmp

Filesize
488KB

Download
memory/2264-26-0x000000006AAFE000-0x000000006AAFF000-memory.dmp

Filesize
4KB

Download
memory/2264-20-0x00000000002E0000-0x00000000002F0000-memory.dmp

Filesize
64KB

Download
memory/2264-18-0x0000000000F60000-0x0000000000FFE000-memory.dmp

Filesize
632KB

Download
memory/2264-16-0x000000006AAFE000-0x000000006AAFF000-memory.dmp

Filesize
4KB

Download
memory/3036-32-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3036-59-0x0000000000F30000-0x0000000000F42000-memory.dmp

Filesize
72KB

Download
memory/3036-34-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3036-37-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3036-39-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3036-41-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3036-51-0x0000000000810000-0x000000000081A000-memory.dmp

Filesize
40KB

Download
memory/3036-52-0x0000000000820000-0x000000000083E000-memory.dmp

Filesize
120KB

Download
memory/3036-53-0x0000000000BB0000-0x0000000000BBA000-memory.dmp

Filesize
40KB

Download
memory/3036-56-0x0000000000CA0000-0x0000000000CB2000-memory.dmp

Filesize
72KB

Download
memory/3036-57-0x0000000000F00000-0x0000000000F1A000-memory.dmp

Filesize
104KB

Download
memory/3036-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3036-58-0x0000000000DF0000-0x0000000000DFE000-memory.dmp

Filesize
56KB

Download
memory/3036-60-0x0000000000F40000-0x0000000000F4E000-memory.dmp

Filesize
56KB

Download
memory/3036-62-0x00000000046D0000-0x00000000046E4000-memory.dmp

Filesize
80KB

Download
memory/3036-61-0x0000000000F50000-0x0000000000F5C000-memory.dmp

Filesize
48KB

Download
memory/3036-63-0x0000000004720000-0x0000000004730000-memory.dmp

Filesize
64KB

Download
memory/3036-64-0x0000000004770000-0x0000000004784000-memory.dmp

Filesize
80KB

Download
memory/3036-66-0x0000000004910000-0x000000000493E000-memory.dmp

Filesize
184KB

Download
memory/3036-65-0x0000000004780000-0x000000000478E000-memory.dmp

Filesize
56KB

Download
memory/3036-67-0x00000000047A0000-0x00000000047B4000-memory.dmp

Filesize
80KB

Download
memory/3036-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3036-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download