nanocore | 1546fc1f8e8447a730815af827134ccfd4316eeccdca1912bea7fbce2bfb627d

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
04/05/2024, 20:20

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General

Target
pdf.exe
Size 661KB
Sample240504-y4heradb89
SHA256 cac9f27ac564c17317125db57af909b78a9134edc9992bc573f624666775fd66
MD5 622d432561004acfc474b3eb679b3c57
SHA1 54ac325a2f36fd1f804b6db6a69e73e6fbd6b83d
SHA512 4f37a0c6e8f62ca7f5ab88c8ce0039bde074e1394b6086a93f9cc47461ebc34d1cfc03646414435d26bc1283358a0aa31892a784ce4dff3ee3229b4954a92e1f
SSDEEP 12288:Pug52mXIrcT6Ne9vWtxgsGGNrNqUgcvyluD9otjt6gX4d0LCy:mgnXmVBJN28kjjtId0L
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

185.217.1.176:555
127.0.0.1:555

Mutex

bd5c416c-71f5-4d6b-8bd1-843e849fe681

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-04-25T19:44:35.733601436Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
555
default_group
AAAAA
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
bd5c416c-71f5-4d6b-8bd1-843e849fe681
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\DOS Host = "C:\\Program Files (x86)\\DOS Host\\doshost.exe"	pdf.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	pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2116 set thread context of 3308	2116	pdf.exe	95

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DOS Host\doshost.exe	pdf.exe
File opened for modification	C:\Program Files (x86)\DOS Host\doshost.exe	pdf.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2116	pdf.exe
2116	pdf.exe
3308	pdf.exe
3308	pdf.exe
3308	pdf.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3308	pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2116	pdf.exe
Token: SeDebugPrivilege	3308	pdf.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 3308	2116	pdf.exe	95
PID 2116 wrote to memory of 3308	2116	pdf.exe	95
PID 2116 wrote to memory of 3308	2116	pdf.exe	95
PID 2116 wrote to memory of 3308	2116	pdf.exe	95
PID 2116 wrote to memory of 3308	2116	pdf.exe	95
PID 2116 wrote to memory of 3308	2116	pdf.exe	95
PID 2116 wrote to memory of 3308	2116	pdf.exe	95
PID 2116 wrote to memory of 3308	2116	pdf.exe	95

C:\Users\Admin\AppData\Local\Temp\pdf.exe
"C:\Users\Admin\AppData\Local\Temp\pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Users\Admin\AppData\Local\Temp\pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\pdf.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:3308

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2116-0-0x0000000074C32000-0x0000000074C33000-memory.dmp

Download

memory/2116-1-0x0000000074C30000-0x00000000751E1000-memory.dmp

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memory/2116-2-0x0000000074C30000-0x00000000751E1000-memory.dmp

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memory/2116-3-0x0000000074C32000-0x0000000074C33000-memory.dmp

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memory/2116-4-0x0000000074C30000-0x00000000751E1000-memory.dmp

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memory/2116-8-0x0000000074C30000-0x00000000751E1000-memory.dmp

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memory/3308-5-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3308-9-0x0000000074C30000-0x00000000751E1000-memory.dmp

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memory/3308-7-0x0000000074C30000-0x00000000751E1000-memory.dmp

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memory/3308-12-0x0000000074C30000-0x00000000751E1000-memory.dmp

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memory/3308-13-0x0000000074C30000-0x00000000751E1000-memory.dmp

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memory/3308-14-0x0000000074C30000-0x00000000751E1000-memory.dmp

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