nanocore | 77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 23:06

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General

Target
77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe
Size 1.2MB
Sample240509-23nf6afd22
SHA256 77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d
MD5 f67909ae3e4cb4a218142180693a5db3
SHA1 56a35e6e93f887a7f40da083cd32cfd3a75abd5f
SHA512 27688f353b3597b605107b6a917974b6b63562f1a08358152f4519b59ded91c63f0d7808836581536da4e341ad8ad93ed361f4c8b2320b200b770de5fcd63f6b
SSDEEP 24576:GAHnh+eWsN3skA4RV1Hom2KXSmHdPoI3fr6j2/2+n/T5J:hh+ZkldoPKiYdPoMNJ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

213.184.126.143:1993

Mutex

023e0719-23ff-48a0-a14a-16f92fea10e1

Attributes

activate_away_mode
true
backup_connection_host
213.184.126.143
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-01-21T14:43:07.916268436Z
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
1993
default_group
isreal
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
023e0719-23ff-48a0-a14a-16f92fea10e1
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
213.184.126.143
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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.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\DPI Subsystem = "C:\\Program Files (x86)\\DPI Subsystem\\dpiss.exe"	RegAsm.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	RegAsm.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3516-0-0x00000000009D0000-0x0000000000B0F000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3516 set thread context of 1520	3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe	91

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DPI Subsystem\dpiss.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\DPI Subsystem\dpiss.exe	RegAsm.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
4952	schtasks.exe
4860	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1520	RegAsm.exe
1520	RegAsm.exe
1520	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1520	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1520	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe
3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe
3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe
3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe
3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3516 wrote to memory of 1520	3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe	91
PID 3516 wrote to memory of 1520	3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe	91
PID 3516 wrote to memory of 1520	3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe	91
PID 3516 wrote to memory of 1520	3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe	91
PID 3516 wrote to memory of 1520	3516	77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe	91
PID 1520 wrote to memory of 4860	1520	RegAsm.exe	92
PID 1520 wrote to memory of 4860	1520	RegAsm.exe	92
PID 1520 wrote to memory of 4860	1520	RegAsm.exe	92
PID 1520 wrote to memory of 4952	1520	RegAsm.exe	94
PID 1520 wrote to memory of 4952	1520	RegAsm.exe	94
PID 1520 wrote to memory of 4952	1520	RegAsm.exe	94

C:\Users\Admin\AppData\Local\Temp\77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe
"C:\Users\Admin\AppData\Local\Temp\77f8944887691023403d352ac83d7f802d6a10fa735b971aca834722b8f9508d.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1520
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp52FD.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:4860
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp535C.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:4952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

tmp52FD.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp52FD.tmp
Size 1KB
SHA256 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
MD5 c6f0625bf4c1cdfb699980c9243d3b22
SHA1 43de1fe580576935516327f17b5da0c656c72851
SHA512 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
MD5 SHA1 SHA512

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tmp535C.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp535C.tmp
Size 1KB
SHA256 e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66
MD5 5fea24e883e06e4df6d240dc72abf2c5
SHA1 d778bf0f436141e02df4b421e8188abdcc9a84a4
SHA512 15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924
MD5 SHA1 SHA512

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memory/1520-2-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1520-7-0x00000000738C2000-0x00000000738C3000-memory.dmp

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memory/1520-8-0x00000000738C0000-0x0000000073E71000-memory.dmp

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memory/1520-9-0x00000000738C0000-0x0000000073E71000-memory.dmp

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memory/1520-20-0x00000000738C2000-0x00000000738C3000-memory.dmp

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memory/1520-21-0x00000000738C0000-0x0000000073E71000-memory.dmp

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memory/3516-0-0x00000000009D0000-0x0000000000B0F000-memory.dmp

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memory/3516-6-0x0000000001560000-0x0000000001561000-memory.dmp

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