nanocore | ff221c26a6ad233a179ede24b8156649e2e4338af867571943a2f114650bffa2

Analysis

max time kernel
121s
max time network
153s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-11-2024 06:48

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General

Target

RFQ_PO_091232.rtf
Size

825KB
MD5

666036634de5de5ff28819cec19299f3
SHA1

4cb3fb08d6a173e1526f48d1d4237c29f9a49f5f
SHA256

ff221c26a6ad233a179ede24b8156649e2e4338af867571943a2f114650bffa2
SHA512

6f8ede92bcc457c2bc07f3ad15a33799d288b4eb6d56f1b8b44517c36373d35a4fe1e4804e90f5069ccfa400731cd172997ac23a154cbf3640fe5da355fb8eac
SSDEEP

6144:HcwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAjjFkYwsQ+jGnThT:2

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
4	2328	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
1236	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2876	jequduhalcat.exe
2572	jequduhalcat.exe

Loads dropped DLL 1 IoCs

pid	Process
2328	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\UDP Manager = "C:\\Program Files (x86)\\UDP Manager\\udpmgr.exe"	jequduhalcat.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	jequduhalcat.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 2876 set thread context of 2572	2876	jequduhalcat.exe	38

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\UDP Manager\udpmgr.exe	jequduhalcat.exe
File opened for modification	C:\Program Files (x86)\UDP Manager\udpmgr.exe	jequduhalcat.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	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	jequduhalcat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jequduhalcat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
2328	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
1772	schtasks.exe
2652	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2668	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1236	powershell.exe
2572	jequduhalcat.exe
2572	jequduhalcat.exe
2572	jequduhalcat.exe
2572	jequduhalcat.exe
2572	jequduhalcat.exe
2572	jequduhalcat.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2572	jequduhalcat.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1236	powershell.exe
Token: SeDebugPrivilege	2572	jequduhalcat.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2668	WINWORD.EXE
2668	WINWORD.EXE

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2876	2328	EQNEDT32.EXE	33
PID 2328 wrote to memory of 2876	2328	EQNEDT32.EXE	33
PID 2328 wrote to memory of 2876	2328	EQNEDT32.EXE	33
PID 2328 wrote to memory of 2876	2328	EQNEDT32.EXE	33
PID 2668 wrote to memory of 2604	2668	WINWORD.EXE	35
PID 2668 wrote to memory of 2604	2668	WINWORD.EXE	35
PID 2668 wrote to memory of 2604	2668	WINWORD.EXE	35
PID 2668 wrote to memory of 2604	2668	WINWORD.EXE	35
PID 2876 wrote to memory of 1236	2876	jequduhalcat.exe	36
PID 2876 wrote to memory of 1236	2876	jequduhalcat.exe	36
PID 2876 wrote to memory of 1236	2876	jequduhalcat.exe	36
PID 2876 wrote to memory of 1236	2876	jequduhalcat.exe	36
PID 2876 wrote to memory of 2572	2876	jequduhalcat.exe	38
PID 2876 wrote to memory of 2572	2876	jequduhalcat.exe	38
PID 2876 wrote to memory of 2572	2876	jequduhalcat.exe	38
PID 2876 wrote to memory of 2572	2876	jequduhalcat.exe	38
PID 2876 wrote to memory of 2572	2876	jequduhalcat.exe	38
PID 2876 wrote to memory of 2572	2876	jequduhalcat.exe	38
PID 2876 wrote to memory of 2572	2876	jequduhalcat.exe	38
PID 2876 wrote to memory of 2572	2876	jequduhalcat.exe	38
PID 2876 wrote to memory of 2572	2876	jequduhalcat.exe	38
PID 2572 wrote to memory of 1772	2572	jequduhalcat.exe	39
PID 2572 wrote to memory of 1772	2572	jequduhalcat.exe	39
PID 2572 wrote to memory of 1772	2572	jequduhalcat.exe	39
PID 2572 wrote to memory of 1772	2572	jequduhalcat.exe	39
PID 2572 wrote to memory of 2652	2572	jequduhalcat.exe	41
PID 2572 wrote to memory of 2652	2572	jequduhalcat.exe	41
PID 2572 wrote to memory of 2652	2572	jequduhalcat.exe	41
PID 2572 wrote to memory of 2652	2572	jequduhalcat.exe	41

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\RFQ_PO_091232.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:2668
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2604

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:2328
- C:\Users\Admin\AppData\Roaming\jequduhalcat.exe
  "C:\Users\Admin\AppData\Roaming\jequduhalcat.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2876
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jequduhalcat.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:1236
- - C:\Users\Admin\AppData\Roaming\jequduhalcat.exe
    "C:\Users\Admin\AppData\Roaming\jequduhalcat.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:2572
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "UDP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4569.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:1772
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "UDP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4828.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2652

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4569.tmp

Filesize
1KB

MD5
bd591eebe11d193e29c078323f5b9b8b

SHA1
6a093fab046422f4b4501a6db734ec6f9dabf299

SHA256
0ac67ad4c63b9736d0c07363874a11a1aa6038dbfc757b373e992c48b82ff7c7

SHA512
49045eacf3f2f676bd76c9db9ace132a35c093dad1fb4bdb1d7f04a87220fe1197472244b8b1bce705d2acf5de4f35a9c80bbe8b000f7cb5c5c74de536e70b51

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4828.tmp

Filesize
1KB

MD5
c1c4b266e129249076bbe8a15cc5e06c

SHA1
312b8173c264245c834eee91e05dcca845c341f8

SHA256
f336d06dcadca621be6b2dc9493dcb84d871497e65142bc9fdd72c9f250a1b7b

SHA512
0f02ec7700f89d95d29014eec42d13c85234351c3fe1dc6a3efeea52ea76ca4bea3151567a6c798b5ce658d481b424646b43d93e95ccad897356a87a25d45041

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

Filesize
767KB

MD5
1ee4aca2ed3fbc7d17f8a86c751c1cc2

SHA1
79fdfd56292f04c800afaa837b445e780355f3fb

SHA256
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80

SHA512
2aa63b5a446b06d0e1149935ab3ea4803d797355ae4ac092abd5c3e7395bc9bb1dcd56f4489b144bffea42c916f9b22be250a09fd22634ba8de04a054cb7a910

Download Submit
memory/2572-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2572-54-0x00000000008A0000-0x00000000008AE000-memory.dmp

Filesize
56KB

Download
memory/2572-44-0x0000000000630000-0x000000000063A000-memory.dmp

Filesize
40KB

Download
memory/2572-60-0x0000000000940000-0x0000000000954000-memory.dmp

Filesize
80KB

Download
memory/2572-58-0x0000000000920000-0x000000000092E000-memory.dmp

Filesize
56KB

Download
memory/2572-52-0x0000000000770000-0x0000000000782000-memory.dmp

Filesize
72KB

Download
memory/2572-33-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2572-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2572-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2572-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2572-34-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2572-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2572-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2572-57-0x0000000000910000-0x0000000000924000-memory.dmp

Filesize
80KB

Download
memory/2572-59-0x0000000000A30000-0x0000000000A5E000-memory.dmp

Filesize
184KB

Download
memory/2572-51-0x0000000000760000-0x000000000076E000-memory.dmp

Filesize
56KB

Download
memory/2572-45-0x0000000000640000-0x000000000065E000-memory.dmp

Filesize
120KB

Download
memory/2572-46-0x0000000000660000-0x000000000066A000-memory.dmp

Filesize
40KB

Download
memory/2572-50-0x0000000000740000-0x000000000075A000-memory.dmp

Filesize
104KB

Download
memory/2572-49-0x00000000006D0000-0x00000000006E2000-memory.dmp

Filesize
72KB

Download
memory/2572-56-0x00000000008C0000-0x00000000008D0000-memory.dmp

Filesize
64KB

Download
memory/2572-55-0x00000000008B0000-0x00000000008C4000-memory.dmp

Filesize
80KB

Download
memory/2572-53-0x0000000000890000-0x000000000089C000-memory.dmp

Filesize
48KB

Download
memory/2668-19-0x000000007137D000-0x0000000071388000-memory.dmp

Filesize
44KB

Download
memory/2668-2-0x000000007137D000-0x0000000071388000-memory.dmp

Filesize
44KB

Download
memory/2668-0-0x000000002F861000-0x000000002F862000-memory.dmp

Filesize
4KB

Download
memory/2668-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2876-14-0x0000000000960000-0x0000000000A26000-memory.dmp

Filesize
792KB

Download
memory/2876-21-0x0000000000530000-0x00000000005AA000-memory.dmp

Filesize
488KB

Download
memory/2876-20-0x00000000005D0000-0x00000000005EC000-memory.dmp

Filesize
112KB

Download