nanocore | c26183db9ed0492371946aaebd597261a47d470c5e79c340f0cc1090eb0f1f55

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 00:43

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General

Target
ba16130de9ba12239b31484e661ef59f.exe
Size 661KB
Sample240308-a3cacaaf59
SHA256 c26183db9ed0492371946aaebd597261a47d470c5e79c340f0cc1090eb0f1f55
MD5 ba16130de9ba12239b31484e661ef59f
SHA1 fdfdabe9fbeae303c381ea8797cda9e8b25c0f0e
SHA512 1a2a6123f2963f7d858e60eb75a467c93638f624d3f5fc4b6bf612b5cb8c1cc42e3588c02ad296f3f0506a3624ef505d49e8e306d6cfd02cb4f1fe0e8d12b762
SSDEEP 12288:IBs159o1klmHQKoiHTunuOxhzyK03EortADpuFzDHsuFu5PpV3+zUwIrUBqQ:IG159RUHQ4SuObzX03btAFizr7FWa
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

wywtrwbnmhtytrebsgwtfcvzcxgjhyegvbcnmgte.ydns.eu:2486

Mutex

38e550b1-749b-4070-a891-ba3703218cb4

Attributes

activate_away_mode
true
backup_connection_host
wywtrwbnmhtytrebsgwtfcvzcxgjhyegvbcnmgte.ydns.eu
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-12-05T22:55:32.707339436Z
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
2486
default_group
Default
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
38e550b1-749b-4070-a891-ba3703218cb4
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
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

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\DHCP Service = "C:\\Program Files (x86)\\DHCP Service\\dhcpsvc.exe"	ba16130de9ba12239b31484e661ef59f.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	ba16130de9ba12239b31484e661ef59f.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4552 set thread context of 1804	4552	ba16130de9ba12239b31484e661ef59f.exe	100

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DHCP Service\dhcpsvc.exe	ba16130de9ba12239b31484e661ef59f.exe
File opened for modification	C:\Program Files (x86)\DHCP Service\dhcpsvc.exe	ba16130de9ba12239b31484e661ef59f.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
1248	schtasks.exe
924	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1804	ba16130de9ba12239b31484e661ef59f.exe
1804	ba16130de9ba12239b31484e661ef59f.exe
1804	ba16130de9ba12239b31484e661ef59f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1804	ba16130de9ba12239b31484e661ef59f.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1804	ba16130de9ba12239b31484e661ef59f.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4552 wrote to memory of 1804	4552	ba16130de9ba12239b31484e661ef59f.exe	100
PID 4552 wrote to memory of 1804	4552	ba16130de9ba12239b31484e661ef59f.exe	100
PID 4552 wrote to memory of 1804	4552	ba16130de9ba12239b31484e661ef59f.exe	100
PID 4552 wrote to memory of 1804	4552	ba16130de9ba12239b31484e661ef59f.exe	100
PID 4552 wrote to memory of 1804	4552	ba16130de9ba12239b31484e661ef59f.exe	100
PID 4552 wrote to memory of 1804	4552	ba16130de9ba12239b31484e661ef59f.exe	100
PID 4552 wrote to memory of 1804	4552	ba16130de9ba12239b31484e661ef59f.exe	100
PID 4552 wrote to memory of 1804	4552	ba16130de9ba12239b31484e661ef59f.exe	100
PID 1804 wrote to memory of 1248	1804	ba16130de9ba12239b31484e661ef59f.exe	102
PID 1804 wrote to memory of 1248	1804	ba16130de9ba12239b31484e661ef59f.exe	102
PID 1804 wrote to memory of 1248	1804	ba16130de9ba12239b31484e661ef59f.exe	102
PID 1804 wrote to memory of 924	1804	ba16130de9ba12239b31484e661ef59f.exe	104
PID 1804 wrote to memory of 924	1804	ba16130de9ba12239b31484e661ef59f.exe	104
PID 1804 wrote to memory of 924	1804	ba16130de9ba12239b31484e661ef59f.exe	104

C:\Users\Admin\AppData\Local\Temp\ba16130de9ba12239b31484e661ef59f.exe
"C:\Users\Admin\AppData\Local\Temp\ba16130de9ba12239b31484e661ef59f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Users\Admin\AppData\Local\Temp\ba16130de9ba12239b31484e661ef59f.exe
  "{path}"
  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:1804
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DHCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDCC3.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1248
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DHCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDD22.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:924

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

ba16130de9ba12239b31484e661ef59f.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\ba16130de9ba12239b31484e661ef59f.exe.log
Size 496B
SHA256 8d0edecf54cbbdf7981c8e41a3ed8621503188a87415f9af0fb8d890b138c349
MD5 cb76b18ebed3a9f05a14aed43d35fba6
SHA1 836a4b4e351846fca08b84149cb734cb59b8c0d6
SHA512 7631141e4a6dda29452ada666326837372cd3d045f773006f63d9eff15d9432ed00029d9108a72c1a3b858377600a2aab2c9ec03764285c8801b6019babcf21c
MD5 SHA1 SHA512

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tmpDCC3.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpDCC3.tmp
Size 1KB
SHA256 264c58f7fabd6920ac432302ec530995df85cf9810d15b3cc7e9d4a1835ce898
MD5 cf83557808abb506c4161993fd1180db
SHA1 63e5ec9a57f15f4d7ff72487c405c19963562700
SHA512 cebea9a55df06dd901480200225eda55cf387922e45d5683c6cd03e6f2c44e225d071aeb48046b4f9217a692cde496ea88f076a86772d2586732c455b4aad3b7
MD5 SHA1 SHA512

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tmpDD22.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpDD22.tmp
Size 1KB
SHA256 39b16b3a00b6b43c6820357127228c0768a577153014ce7b0ea3c585244dc08b
MD5 7f4b37265a0a4b0fea67999d11d911e8
SHA1 1b8e13e6a27c3768c30cf713b79eaa8a757e1349
SHA512 ef97ccfb663555aedc7fdc4b3ac4cd6536c80a778b4ec3bc6124a09544733988de1dac1e6a3714b0d6e8713e3523e0732d5dfcf674f2c5e1f3eadacb0c8e5e03
MD5 SHA1 SHA512

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memory/1804-9-0x00000000016C0000-0x00000000016D0000-memory.dmp

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memory/1804-4-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1804-8-0x0000000074F90000-0x0000000075541000-memory.dmp

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memory/1804-10-0x0000000074F90000-0x0000000075541000-memory.dmp

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memory/1804-18-0x00000000016C0000-0x00000000016D0000-memory.dmp

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memory/1804-19-0x0000000074F90000-0x0000000075541000-memory.dmp

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memory/1804-20-0x00000000016C0000-0x00000000016D0000-memory.dmp

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memory/1804-21-0x00000000016C0000-0x00000000016D0000-memory.dmp

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memory/4552-3-0x0000000074F90000-0x0000000075541000-memory.dmp

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memory/4552-7-0x0000000074F90000-0x0000000075541000-memory.dmp

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memory/4552-0-0x0000000074F90000-0x0000000075541000-memory.dmp

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memory/4552-2-0x0000000001590000-0x00000000015A0000-memory.dmp

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memory/4552-1-0x0000000074F90000-0x0000000075541000-memory.dmp

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