nanocore | 5fcd1f0174623a340f8c01d1cb4770b2c62b15f0a4036ce84df2120ed0556eb3

General

Target

RFP1YKrWyM1oDxc.exe
Size

792KB
MD5

f4404d9cd543608dd880c42076521864
SHA1

121f58afd508304776f107f2e6a054cfeed5fd40
SHA256

5fcd1f0174623a340f8c01d1cb4770b2c62b15f0a4036ce84df2120ed0556eb3
SHA512

397b04d2b1b3d5e73634ff9ad4ae843bb160f013975a87b0747125d2905512a52d8f0a22a7d588f1f5776815a3ea86f13364bae1952da695e78eb22e60846b7f
SSDEEP

12288:ETvx16fHYb8RTNSwERVBG5y2hIAx2PKKqeWp5QxzfNGpd0WJMCXoudx:4vx6HkkNQGw2hL2poYxzVGL0WjTv

Score

10^/10

nanocore discovery evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

pnauco5.ddns.net:1664

Mutex

cde38e58-d99c-4068-b775-59569bc2e8ce

Attributes

activate_away_mode
true
backup_connection_host
pnauco5.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2024-07-03T06:48:27.569053036Z
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
NEW
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
cde38e58-d99c-4068-b775-59569bc2e8ce
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
pnauco5.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

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
2100	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\UDP Service = "C:\\Program Files (x86)\\UDP Service\\udpsv.exe"	RFP1YKrWyM1oDxc.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	RFP1YKrWyM1oDxc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2400 set thread context of 2664	2400	RFP1YKrWyM1oDxc.exe	32

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\UDP Service\udpsv.exe	RFP1YKrWyM1oDxc.exe
File opened for modification	C:\Program Files (x86)\UDP Service\udpsv.exe	RFP1YKrWyM1oDxc.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 5 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	RFP1YKrWyM1oDxc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RFP1YKrWyM1oDxc.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	schtasks.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
2600	schtasks.exe
1048	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2100	powershell.exe
2664	RFP1YKrWyM1oDxc.exe
2664	RFP1YKrWyM1oDxc.exe
2664	RFP1YKrWyM1oDxc.exe
2664	RFP1YKrWyM1oDxc.exe
2664	RFP1YKrWyM1oDxc.exe
2664	RFP1YKrWyM1oDxc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2664	RFP1YKrWyM1oDxc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2100	powershell.exe
Token: SeDebugPrivilege	2664	RFP1YKrWyM1oDxc.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2100	2400	RFP1YKrWyM1oDxc.exe	30
PID 2400 wrote to memory of 2100	2400	RFP1YKrWyM1oDxc.exe	30
PID 2400 wrote to memory of 2100	2400	RFP1YKrWyM1oDxc.exe	30
PID 2400 wrote to memory of 2100	2400	RFP1YKrWyM1oDxc.exe	30
PID 2400 wrote to memory of 2664	2400	RFP1YKrWyM1oDxc.exe	32
PID 2400 wrote to memory of 2664	2400	RFP1YKrWyM1oDxc.exe	32
PID 2400 wrote to memory of 2664	2400	RFP1YKrWyM1oDxc.exe	32
PID 2400 wrote to memory of 2664	2400	RFP1YKrWyM1oDxc.exe	32
PID 2400 wrote to memory of 2664	2400	RFP1YKrWyM1oDxc.exe	32
PID 2400 wrote to memory of 2664	2400	RFP1YKrWyM1oDxc.exe	32
PID 2400 wrote to memory of 2664	2400	RFP1YKrWyM1oDxc.exe	32
PID 2400 wrote to memory of 2664	2400	RFP1YKrWyM1oDxc.exe	32
PID 2400 wrote to memory of 2664	2400	RFP1YKrWyM1oDxc.exe	32
PID 2664 wrote to memory of 2600	2664	RFP1YKrWyM1oDxc.exe	33
PID 2664 wrote to memory of 2600	2664	RFP1YKrWyM1oDxc.exe	33
PID 2664 wrote to memory of 2600	2664	RFP1YKrWyM1oDxc.exe	33
PID 2664 wrote to memory of 2600	2664	RFP1YKrWyM1oDxc.exe	33
PID 2664 wrote to memory of 1048	2664	RFP1YKrWyM1oDxc.exe	35
PID 2664 wrote to memory of 1048	2664	RFP1YKrWyM1oDxc.exe	35
PID 2664 wrote to memory of 1048	2664	RFP1YKrWyM1oDxc.exe	35
PID 2664 wrote to memory of 1048	2664	RFP1YKrWyM1oDxc.exe	35

C:\Users\Admin\AppData\Local\Temp\RFP1YKrWyM1oDxc.exe
"C:\Users\Admin\AppData\Local\Temp\RFP1YKrWyM1oDxc.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\RFP1YKrWyM1oDxc.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2100
- C:\Users\Admin\AppData\Local\Temp\RFP1YKrWyM1oDxc.exe
  "C:\Users\Admin\AppData\Local\Temp\RFP1YKrWyM1oDxc.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:2664
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp20CA.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2600
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2138.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1048

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\tmp20CA.tmp

Filesize
1KB

MD5
f35a0f72b5bf54651333b75ec1ade516

SHA1
53d528119c24229ff5fd6b843c7e930c18c08314

SHA256
a19a434e1c84ee33578c3248560d2cc3659f7c5ed2845d66aeab7bee49f1d89f

SHA512
4b815247d41cca1c885e9cdd33c742d4cc2aa279e52195d38175c65082246603e368d0843073423b7b5ec8521288c5f66dc1b4bd045e9b040d4c09e82ab6e30a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2138.tmp

Filesize
1KB

MD5
0a24db62cb5b84309c4803346caaa25d

SHA1
67660778f61bb44168c33ed3fe56ed86cf9583e8

SHA256
38d38647af394a04ee6add9f05c43244f04e64a6b96257f4b241a5038efa82df

SHA512
d25d9df063f44595d5e0bf890755bd387655131ff369eeedf3d11ffcc6202ca4455bbb33a8a926dd06839cbd1ddec3d06809b3c66a82c6518aa14beaa469a548

Download Submit
memory/2400-22-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2400-1-0x0000000000A40000-0x0000000000B0C000-memory.dmp

Filesize
816KB

Download
memory/2400-2-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2400-3-0x00000000008B0000-0x00000000008CE000-memory.dmp

Filesize
120KB

Download
memory/2400-4-0x00000000744CE000-0x00000000744CF000-memory.dmp

Filesize
4KB

Download
memory/2400-5-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2400-6-0x0000000000920000-0x000000000099A000-memory.dmp

Filesize
488KB

Download
memory/2400-0-0x00000000744CE000-0x00000000744CF000-memory.dmp

Filesize
4KB

Download
memory/2664-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2664-34-0x0000000000480000-0x000000000048A000-memory.dmp

Filesize
40KB

Download
memory/2664-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2664-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2664-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2664-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2664-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2664-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2664-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2664-32-0x00000000003D0000-0x00000000003DA000-memory.dmp

Filesize
40KB

Download
memory/2664-33-0x00000000003E0000-0x00000000003FE000-memory.dmp

Filesize
120KB

Download
memory/2664-21-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2664-37-0x00000000006D0000-0x00000000006E2000-memory.dmp

Filesize
72KB

Download
memory/2664-38-0x00000000007C0000-0x00000000007DA000-memory.dmp

Filesize
104KB

Download
memory/2664-39-0x00000000007E0000-0x00000000007EE000-memory.dmp

Filesize
56KB

Download
memory/2664-40-0x0000000000A20000-0x0000000000A32000-memory.dmp

Filesize
72KB

Download
memory/2664-41-0x0000000000A30000-0x0000000000A3E000-memory.dmp

Filesize
56KB

Download
memory/2664-42-0x00000000020A0000-0x00000000020B4000-memory.dmp

Filesize
80KB

Download
memory/2664-43-0x00000000020B0000-0x00000000020C0000-memory.dmp

Filesize
64KB

Download
memory/2664-44-0x0000000002100000-0x0000000002114000-memory.dmp

Filesize
80KB

Download
memory/2664-45-0x0000000002110000-0x000000000211E000-memory.dmp

Filesize
56KB

Download
memory/2664-46-0x0000000004CC0000-0x0000000004CEE000-memory.dmp

Filesize
184KB

Download
memory/2664-47-0x00000000021F0000-0x0000000002204000-memory.dmp

Filesize
80KB

Download
memory/2664-48-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads