nanocore | e350c2b790eeb871bb66775ef6b1951521ebedbacb8f8ba5d536731fc0b2e7ca

Analysis

max time kernel
150s
max time network
153s
platform
windows10_x64
resource
win10v20210408
submitted
22/06/2021, 12:27

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General

Target
Arrival Notice INV 4843932.exe
Size 1.3MB
Sample210622-vb8rf7whn6
SHA256 e350c2b790eeb871bb66775ef6b1951521ebedbacb8f8ba5d536731fc0b2e7ca
MD5 440eb96e2a1cf21720dd8d9ff9e5a2f3
SHA1 d5b989aa92eb4ca63a52dd58a56785bcf4f6b2ec
SHA512 cd9d98fe29a97c81c5f6353c2a18e8f0ef146e09988606d8bd9ffd0317d737ef32ee08e0ccb7c78b027d3280ec166b80a6d89ea01b90df779e08d22ad9dcbb67
MD5 SHA1 SHA512

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

night90.ddns.net:5657
127.0.0.1:5657

Mutex

67fc0697-fb83-4745-84a8-78752702c3b3

Attributes

activate_away_mode
false
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-04-02T11:59:21.566690036Z
bypass_user_account_control
true
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
5657
default_group
NOW
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
67fc0697-fb83-4745-84a8-78752702c3b3
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
night90.ddns.net
primary_dns_server
night90.ddns.net
request_elevation
true
restart_delay
5000
run_delay
50
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

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\UPNP Subsystem = "C:\\Program Files (x86)\\UPNP Subsystem\\upnpss.exe"	Arrival Notice INV 4843932.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	Arrival Notice INV 4843932.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 904 set thread context of 2200	904	Arrival Notice INV 4843932.exe	85

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\UPNP Subsystem\upnpss.exe	Arrival Notice INV 4843932.exe
File opened for modification	C:\Program Files (x86)\UPNP Subsystem\upnpss.exe	Arrival Notice INV 4843932.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
3344	schtasks.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
904	Arrival Notice INV 4843932.exe
2200	Arrival Notice INV 4843932.exe
2200	Arrival Notice INV 4843932.exe
2200	Arrival Notice INV 4843932.exe
740	powershell.exe
2228	powershell.exe
3332	powershell.exe
3332	powershell.exe
2228	powershell.exe
740	powershell.exe
740	powershell.exe
2228	powershell.exe
3332	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2200	Arrival Notice INV 4843932.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	904	Arrival Notice INV 4843932.exe
Token: SeDebugPrivilege	2200	Arrival Notice INV 4843932.exe
Token: SeDebugPrivilege	3332	powershell.exe
Token: SeDebugPrivilege	740	powershell.exe
Token: SeDebugPrivilege	2228	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 904 wrote to memory of 740	904	Arrival Notice INV 4843932.exe	78
PID 904 wrote to memory of 740	904	Arrival Notice INV 4843932.exe	78
PID 904 wrote to memory of 740	904	Arrival Notice INV 4843932.exe	78
PID 904 wrote to memory of 2228	904	Arrival Notice INV 4843932.exe	80
PID 904 wrote to memory of 2228	904	Arrival Notice INV 4843932.exe	80
PID 904 wrote to memory of 2228	904	Arrival Notice INV 4843932.exe	80
PID 904 wrote to memory of 3344	904	Arrival Notice INV 4843932.exe	82
PID 904 wrote to memory of 3344	904	Arrival Notice INV 4843932.exe	82
PID 904 wrote to memory of 3344	904	Arrival Notice INV 4843932.exe	82
PID 904 wrote to memory of 3332	904	Arrival Notice INV 4843932.exe	84
PID 904 wrote to memory of 3332	904	Arrival Notice INV 4843932.exe	84
PID 904 wrote to memory of 3332	904	Arrival Notice INV 4843932.exe	84
PID 904 wrote to memory of 2200	904	Arrival Notice INV 4843932.exe	85
PID 904 wrote to memory of 2200	904	Arrival Notice INV 4843932.exe	85
PID 904 wrote to memory of 2200	904	Arrival Notice INV 4843932.exe	85
PID 904 wrote to memory of 2200	904	Arrival Notice INV 4843932.exe	85
PID 904 wrote to memory of 2200	904	Arrival Notice INV 4843932.exe	85
PID 904 wrote to memory of 2200	904	Arrival Notice INV 4843932.exe	85
PID 904 wrote to memory of 2200	904	Arrival Notice INV 4843932.exe	85
PID 904 wrote to memory of 2200	904	Arrival Notice INV 4843932.exe	85

C:\Users\Admin\AppData\Local\Temp\Arrival Notice INV 4843932.exe
"C:\Users\Admin\AppData\Local\Temp\Arrival Notice INV 4843932.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:904
- 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\Arrival Notice INV 4843932.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:740
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fykTlRhx.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2228
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fykTlRhx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3CF5.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3344
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fykTlRhx.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3332
- C:\Users\Admin\AppData\Local\Temp\Arrival Notice INV 4843932.exe
  "C:\Users\Admin\AppData\Local\Temp\Arrival Notice INV 4843932.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
  PID:2200

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/740-128-0x00000000010F0000-0x00000000010F1000-memory.dmp

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memory/740-135-0x0000000001090000-0x0000000001091000-memory.dmp

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memory/740-141-0x0000000006E80000-0x0000000006E81000-memory.dmp

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memory/740-139-0x0000000001092000-0x0000000001093000-memory.dmp

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memory/740-195-0x0000000001093000-0x0000000001094000-memory.dmp

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memory/740-131-0x00000000070C0000-0x00000000070C1000-memory.dmp

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memory/740-194-0x000000007EE30000-0x000000007EE31000-memory.dmp

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memory/740-156-0x0000000008190000-0x0000000008191000-memory.dmp

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memory/740-153-0x0000000007750000-0x0000000007751000-memory.dmp

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memory/904-114-0x0000000002B50000-0x0000000002B51000-memory.dmp

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memory/2200-134-0x0000000000F90000-0x00000000010DA000-memory.dmp

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memory/2200-124-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2228-136-0x0000000006C00000-0x0000000006C01000-memory.dmp

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memory/2228-196-0x0000000006C03000-0x0000000006C04000-memory.dmp

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memory/2228-138-0x0000000006C02000-0x0000000006C03000-memory.dmp

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memory/2228-193-0x000000007E640000-0x000000007E641000-memory.dmp

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memory/2228-159-0x00000000081E0000-0x00000000081E1000-memory.dmp

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memory/3332-140-0x0000000004D02000-0x0000000004D03000-memory.dmp

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memory/3332-184-0x00000000095D0000-0x0000000009603000-memory.dmp

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memory/3332-192-0x000000007F840000-0x000000007F841000-memory.dmp

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memory/3332-150-0x0000000008160000-0x0000000008161000-memory.dmp

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memory/3332-147-0x0000000007FF0000-0x0000000007FF1000-memory.dmp

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memory/3332-144-0x0000000007810000-0x0000000007811000-memory.dmp

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memory/3332-197-0x0000000004D03000-0x0000000004D04000-memory.dmp

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memory/3332-137-0x0000000004D00000-0x0000000004D01000-memory.dmp

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