nanocore | 38bf20255640821b131eaa9c22c16a6e55e61e18a6cd4e248aa07b919847d626

General

Target

Proof Of Payment.pdf.scr
Size

802KB
MD5

def46fa8f7ed19921147161cb4d20164
SHA1

56322d0751e48e4a8ee48dcd3c44a058d2f224cd
SHA256

38bf20255640821b131eaa9c22c16a6e55e61e18a6cd4e248aa07b919847d626
SHA512

ca4c063e5dbb3389958b865cc572f618ce8810d90a8d88a638742f53e808f254bcd07a55f4c7f4f6fd93ff81a6fcec6a8356326ba2087ec09e25eca3d9de0187

Score

10^/10

evasion trojan keylogger stealer spyware nanocore

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

harolds.ooguy.com:6051

harold.jetos.com:6051

Mutex

501fcca9-f8c3-4f9b-a6ac-05c50b2994da

Attributes

activate_away_mode
true
backup_connection_host
harold.jetos.com
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-04-12T14:32:58.481672636Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
6051
default_group
Spartan
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
501fcca9-f8c3-4f9b-a6ac-05c50b2994da
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
harolds.ooguy.com
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 1600	1484	Proof Of Payment.pdf.scr	68
PID 1484 wrote to memory of 1600	1484	Proof Of Payment.pdf.scr	68
PID 1484 wrote to memory of 1600	1484	Proof Of Payment.pdf.scr	68
PID 1484 wrote to memory of 1600	1484	Proof Of Payment.pdf.scr	68
PID 1484 wrote to memory of 1600	1484	Proof Of Payment.pdf.scr	68
PID 1484 wrote to memory of 1652	1484	Proof Of Payment.pdf.scr	69
PID 1484 wrote to memory of 1652	1484	Proof Of Payment.pdf.scr	69
PID 1484 wrote to memory of 1652	1484	Proof Of Payment.pdf.scr	69

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1652	Proof Of Payment.pdf.scr

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1652	Proof Of Payment.pdf.scr

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	Proof Of Payment.pdf.scr

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\just.vbs	notepad.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1484	Proof Of Payment.pdf.scr
1484	Proof Of Payment.pdf.scr
1652	Proof Of Payment.pdf.scr
1652	Proof Of Payment.pdf.scr
1652	Proof Of Payment.pdf.scr

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1484	Proof Of Payment.pdf.scr

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1484 set thread context of 1652	1484	Proof Of Payment.pdf.scr	69

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

resource	yara_rule
behavioral2/memory/1652-1-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral2/memory/1652-3-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral2/memory/1652-4-0x0000000000400000-0x000000000047F000-memory.dmp	upx

C:\Users\Admin\AppData\Local\Temp\Proof Of Payment.pdf.scr
"C:\Users\Admin\AppData\Local\Temp\Proof Of Payment.pdf.scr" /S
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
PID:1484
- C:\Windows\SysWOW64\notepad.exe
  "C:\Windows\system32\notepad.exe"
  2⤵
  - Drops startup file
  PID:1600
- C:\Users\Admin\AppData\Local\Temp\Proof Of Payment.pdf.scr
  "C:\Users\Admin\AppData\Local\Temp\Proof Of Payment.pdf.scr" /S
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious behavior: GetForegroundWindowSpam
  - Checks whether UAC is enabled
  - Suspicious behavior: EnumeratesProcesses
  PID:1652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1652-1-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-3-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-4-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-5-0x0000000002100000-0x0000000002138000-memory.dmp

Filesize
224KB

Download
memory/1652-6-0x00000000021C2000-0x00000000021C3000-memory.dmp

Filesize
4KB

Download

Analysis

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