nanocore | 80046dce8235118443aa0359296e5f866259b49928782ba82d156af8d9fc301b

Analysis

max time kernel
137s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30/08/2024, 15:10

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General

Target
invoice.exe
Size 382KB
Sample240830-sj455a1fkr
SHA256 f85dc20c8f5191b83ebe3d2d8d7e0feb175cedbf7c9bfbb44b67a7794ceef7ba
MD5 8c7ab1ecf0dc43b1b575a4eda1f810bd
SHA1 d6a110fefe9413a7cad3b2e05a50000b194d15ff
SHA512 dbbf797ca887a7334eb00cbc5aac9d49196902f33f76b0c61079ac9e25c0281cd61ae6760c39ec68d93d8581f7f64cc4af0c9abb4ba99b2ae7e145f2db7187ca
SSDEEP 6144:+IRoC1CkzrOv/3Mhw+VkaPaLRL61pDsaiRjgPdY8FPitFG/12033Fn5Wh7rZDbBz:fotWFZ6ReeRMPdnFPA8dpHsvR+jY
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

185.217.1.176:717
127.0.0.1:717

Mutex

3875e7a7-6140-4c03-8417-1e63250aef30

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-02-18T00:42:25.752401736Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
717
default_group
Money
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
3875e7a7-6140-4c03-8417-1e63250aef30
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
185.217.1.176
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\NAS Monitor = "C:\\Program Files (x86)\\NAS Monitor\\nasmon.exe"	invoice.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	invoice.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2328 set thread context of 5100	2328	invoice.exe	97

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\NAS Monitor\nasmon.exe	invoice.exe
File opened for modification	C:\Program Files (x86)\NAS Monitor\nasmon.exe	invoice.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	invoice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	invoice.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2328	invoice.exe
2328	invoice.exe
5100	invoice.exe
5100	invoice.exe
5100	invoice.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5100	invoice.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	invoice.exe
Token: SeDebugPrivilege	5100	invoice.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 5100	2328	invoice.exe	97
PID 2328 wrote to memory of 5100	2328	invoice.exe	97
PID 2328 wrote to memory of 5100	2328	invoice.exe	97
PID 2328 wrote to memory of 5100	2328	invoice.exe	97
PID 2328 wrote to memory of 5100	2328	invoice.exe	97
PID 2328 wrote to memory of 5100	2328	invoice.exe	97
PID 2328 wrote to memory of 5100	2328	invoice.exe	97
PID 2328 wrote to memory of 5100	2328	invoice.exe	97

C:\Users\Admin\AppData\Local\Temp\invoice.exe
"C:\Users\Admin\AppData\Local\Temp\invoice.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Users\Admin\AppData\Local\Temp\invoice.exe
  "C:\Users\Admin\AppData\Local\Temp\invoice.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
  PID:5100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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

invoice.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\invoice.exe.log
Size 408B
SHA256 154998d6f0471484664b21526bc884c78593aad632d0ee0f4b29ace1946026cf
MD5 9357aeac30c60e6624d070a03e2e36a3
SHA1 d9f1d068b3f6b0dbd4cec72753c761a5efd8ba25
SHA512 859c74948e8b6c6a3a23f09248177bff7ea6f6c5f6a331f075751a5f569845eb3d58c10e05935bfafd2fd73e5f3d0734aa6a9dce8380cc7d7023d6ca6f7d4c4d
MD5 SHA1 SHA512

Submit Download

memory/2328-3-0x0000000075022000-0x0000000075023000-memory.dmp

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memory/2328-2-0x0000000075020000-0x00000000755D1000-memory.dmp

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memory/2328-0-0x0000000075022000-0x0000000075023000-memory.dmp

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memory/2328-4-0x0000000075020000-0x00000000755D1000-memory.dmp

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memory/2328-1-0x0000000075020000-0x00000000755D1000-memory.dmp

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memory/2328-9-0x0000000075020000-0x00000000755D1000-memory.dmp

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memory/5100-5-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/5100-10-0x0000000075020000-0x00000000755D1000-memory.dmp

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memory/5100-8-0x0000000075020000-0x00000000755D1000-memory.dmp

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memory/5100-13-0x0000000075020000-0x00000000755D1000-memory.dmp

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memory/5100-14-0x0000000075020000-0x00000000755D1000-memory.dmp

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memory/5100-15-0x0000000075020000-0x00000000755D1000-memory.dmp

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