nanocore | 790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47

Analysis

max time kernel
56s
max time network
155s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
30-10-2024 02:46

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General

Target

790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47.rtf
Size

710KB
MD5

6a49589fb764ff36b90abd86a2abdbf6
SHA1

155291ae16040e741e6f0d5c22e90ee44af23438
SHA256

790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47
SHA512

5a176709c6f59760fb96c207ce811f237294b65c805eba2618b44c226a1f4fc0d1932d969c168edd16003469934a7528b6003040365e58b131827c9cf8be78e8
SSDEEP

6144:2wAYwAYwAYwAYwAYwAYwAYwAYwAYwAcZ0wTsFajJLHsnhSug4Nc8IlDpYqW:Qi

Score

10^/10

nanocore discovery evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

66.63.187.113:1664

Mutex

a376f716-2f77-4943-a431-3a3bcb53b7c0

Attributes

activate_away_mode
true
backup_connection_host
66.63.187.113
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2024-08-05T03:49:33.827385136Z
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
1664
default_group
CAT
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
a376f716-2f77-4943-a431-3a3bcb53b7c0
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
66.63.187.113
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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	2880	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
2184	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2564	jduerlkcat23021.exe
2452	jduerlkcat23021.exe

Loads dropped DLL 1 IoCs

pid	Process
2880	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\WPA Service = "C:\\Program Files (x86)\\WPA Service\\wpasv.exe"	jduerlkcat23021.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	jduerlkcat23021.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 2564 set thread context of 2452	2564	jduerlkcat23021.exe	34

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\WPA Service\wpasv.exe	jduerlkcat23021.exe
File opened for modification	C:\Program Files (x86)\WPA Service\wpasv.exe	jduerlkcat23021.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	jduerlkcat23021.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jduerlkcat23021.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
2880	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
1500	schtasks.exe
2552	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2164	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2564	jduerlkcat23021.exe
2564	jduerlkcat23021.exe
2452	jduerlkcat23021.exe
2452	jduerlkcat23021.exe
2452	jduerlkcat23021.exe
2184	powershell.exe
2452	jduerlkcat23021.exe
2452	jduerlkcat23021.exe
2452	jduerlkcat23021.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2452	jduerlkcat23021.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2564	jduerlkcat23021.exe
Token: SeDebugPrivilege	2452	jduerlkcat23021.exe
Token: SeDebugPrivilege	2184	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2164	WINWORD.EXE
2164	WINWORD.EXE

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 2564	2880	EQNEDT32.EXE	30
PID 2880 wrote to memory of 2564	2880	EQNEDT32.EXE	30
PID 2880 wrote to memory of 2564	2880	EQNEDT32.EXE	30
PID 2880 wrote to memory of 2564	2880	EQNEDT32.EXE	30
PID 2164 wrote to memory of 2120	2164	WINWORD.EXE	32
PID 2164 wrote to memory of 2120	2164	WINWORD.EXE	32
PID 2164 wrote to memory of 2120	2164	WINWORD.EXE	32
PID 2164 wrote to memory of 2120	2164	WINWORD.EXE	32
PID 2564 wrote to memory of 2184	2564	jduerlkcat23021.exe	33
PID 2564 wrote to memory of 2184	2564	jduerlkcat23021.exe	33
PID 2564 wrote to memory of 2184	2564	jduerlkcat23021.exe	33
PID 2564 wrote to memory of 2184	2564	jduerlkcat23021.exe	33
PID 2564 wrote to memory of 2452	2564	jduerlkcat23021.exe	34
PID 2564 wrote to memory of 2452	2564	jduerlkcat23021.exe	34
PID 2564 wrote to memory of 2452	2564	jduerlkcat23021.exe	34
PID 2564 wrote to memory of 2452	2564	jduerlkcat23021.exe	34
PID 2564 wrote to memory of 2452	2564	jduerlkcat23021.exe	34
PID 2564 wrote to memory of 2452	2564	jduerlkcat23021.exe	34
PID 2564 wrote to memory of 2452	2564	jduerlkcat23021.exe	34
PID 2564 wrote to memory of 2452	2564	jduerlkcat23021.exe	34
PID 2564 wrote to memory of 2452	2564	jduerlkcat23021.exe	34
PID 2452 wrote to memory of 2552	2452	jduerlkcat23021.exe	36
PID 2452 wrote to memory of 2552	2452	jduerlkcat23021.exe	36
PID 2452 wrote to memory of 2552	2452	jduerlkcat23021.exe	36
PID 2452 wrote to memory of 2552	2452	jduerlkcat23021.exe	36
PID 2452 wrote to memory of 1500	2452	jduerlkcat23021.exe	38
PID 2452 wrote to memory of 1500	2452	jduerlkcat23021.exe	38
PID 2452 wrote to memory of 1500	2452	jduerlkcat23021.exe	38
PID 2452 wrote to memory of 1500	2452	jduerlkcat23021.exe	38

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\790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47.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:2164
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2120

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:2880
- C:\Users\Admin\AppData\Roaming\jduerlkcat23021.exe
  "C:\Users\Admin\AppData\Roaming\jduerlkcat23021.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2564
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jduerlkcat23021.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:2184
- - C:\Users\Admin\AppData\Roaming\jduerlkcat23021.exe
    "C:\Users\Admin\AppData\Roaming\jduerlkcat23021.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:2452
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "WPA Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3B0D.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2552
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "WPA Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3C37.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:1500

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3B0D.tmp

Filesize
1KB

MD5
8a2f167fb0bb7c35cea443e85f58bd1e

SHA1
a164f6a442f22e64e6a80c88560f1722cf786798

SHA256
49ad64f3b2da4bc085fb52e47134e61b284439f397a0b4fe200e923c7b7999b9

SHA512
81499f221046e38cad1e6dcb3cc07309955b91e63c830aaa013268985a1253df995d04bfdfbabd4bf1846e79fcf995f610a097977a5e6d5fa06f12bda65a6e76

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3C37.tmp

Filesize
1KB

MD5
21de6c3a6440d917bdbb4b491191d9b2

SHA1
c63c300affe7147910dc4544d2d5f3029bf321a6

SHA256
23af17733a3882cdd82a5bbc321d896b2430dc1bb4b4ac034d129cde5027afc4

SHA512
dcd1c464ed36593b990e072940ab415804ef8076743015fff4939211e30e436beb7ce6af3072769abe0214f737cedb210d2b45e6e90da20dac54c3945b11575f

Download Submit
C:\Users\Admin\AppData\Roaming\jduerlkcat23021.exe

Filesize
636KB

MD5
10b98a933809918bfcdd9c1ea91edee6

SHA1
4e5f1555f8030aab3e98fe7ef31c8083ba9e32f2

SHA256
70494a9ed1d509c12c48aa4dc68f06f73bee77a18a625b576dd515e9f4e0d6c3

SHA512
d5b735529dcc61cc92d2ca93a1b477f9e08901e903847ad68d9d63547c46f5d16f29deb3e329a981068be866167df4eeecf2f14f30ae04501b327c6aff6b2dac

Download Submit
memory/2164-2-0x000000007115D000-0x0000000071168000-memory.dmp

Filesize
44KB

Download
memory/2164-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2164-0-0x000000002F0F1000-0x000000002F0F2000-memory.dmp

Filesize
4KB

Download
memory/2164-20-0x000000007115D000-0x0000000071168000-memory.dmp

Filesize
44KB

Download
memory/2452-34-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2452-46-0x0000000000440000-0x000000000044A000-memory.dmp

Filesize
40KB

Download
memory/2452-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2452-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2452-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2452-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2452-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2452-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2452-33-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2452-60-0x0000000000F50000-0x0000000000F64000-memory.dmp

Filesize
80KB

Download
memory/2452-59-0x0000000001070000-0x000000000109E000-memory.dmp

Filesize
184KB

Download
memory/2452-44-0x00000000003D0000-0x00000000003DA000-memory.dmp

Filesize
40KB

Download
memory/2452-45-0x00000000003E0000-0x00000000003FE000-memory.dmp

Filesize
120KB

Download
memory/2452-58-0x0000000000EF0000-0x0000000000EFE000-memory.dmp

Filesize
56KB

Download
memory/2452-50-0x0000000000590000-0x00000000005AA000-memory.dmp

Filesize
104KB

Download
memory/2452-49-0x0000000000470000-0x0000000000482000-memory.dmp

Filesize
72KB

Download
memory/2452-51-0x00000000005F0000-0x00000000005FE000-memory.dmp

Filesize
56KB

Download
memory/2452-54-0x0000000000C50000-0x0000000000C5E000-memory.dmp

Filesize
56KB

Download
memory/2452-53-0x0000000000730000-0x000000000073C000-memory.dmp

Filesize
48KB

Download
memory/2452-56-0x0000000000D50000-0x0000000000D60000-memory.dmp

Filesize
64KB

Download
memory/2452-52-0x0000000000600000-0x0000000000612000-memory.dmp

Filesize
72KB

Download
memory/2452-55-0x0000000000D40000-0x0000000000D54000-memory.dmp

Filesize
80KB

Download
memory/2452-57-0x0000000000D60000-0x0000000000D74000-memory.dmp

Filesize
80KB

Download
memory/2564-21-0x0000000005660000-0x00000000056DA000-memory.dmp

Filesize
488KB

Download
memory/2564-14-0x0000000001170000-0x0000000001216000-memory.dmp

Filesize
664KB

Download
memory/2564-19-0x0000000000980000-0x000000000099E000-memory.dmp

Filesize
120KB

Download