nanocore | 5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b

Analysis

max time kernel
137s
max time network
171s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07/01/2024, 01:11

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General

Target
051ce434ea8ea139cb3fc0cd61b21a99.exe
Size 584KB
Sample240107-bjx85schf6
SHA256 5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b
MD5 051ce434ea8ea139cb3fc0cd61b21a99
SHA1 0ebb963dc8226ff95f26b90ae148fd02154ef39b
SHA512 5566eab44fd5d2dac278d06015503c709e8f5154fe0b7a9d60ec47d75061ebfdd388005d771bf33a8bcf67f5d014076887832fd081045815118bf952e9b95ac0
SSDEEP 12288:ij34VVCbFKQNt4qQwhZ43CA2TxixwYl06HHbWJQSE88pvtmcSfWl:i8HW/eCrTAwYl06H7l391B
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

kennynanobelintourismedleonline.dumb1.com:7072

Mutex

6b1312cb-72d0-4da8-8182-e917f5887e6c

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2023-09-30T11:54:33.233317936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
7072
default_group
Mr Smart
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
6b1312cb-72d0-4da8-8182-e917f5887e6c
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
kennynanobelintourismedleonline.dumb1.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

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Executes dropped EXE 2 IoCs

pid	Process
2424	ufyabb.exe
4080	ufyabb.exe

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\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Acrobat = "C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\Acrobat!.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\ufyabb.exe\" "	ufyabb.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	ufyabb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2424 set thread context of 4080	2424	ufyabb.exe	92

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4080	ufyabb.exe
4080	ufyabb.exe
4080	ufyabb.exe
4080	ufyabb.exe
4080	ufyabb.exe
4080	ufyabb.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4080	ufyabb.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2424	ufyabb.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4080	ufyabb.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 384 wrote to memory of 2424	384	051ce434ea8ea139cb3fc0cd61b21a99.exe	91
PID 384 wrote to memory of 2424	384	051ce434ea8ea139cb3fc0cd61b21a99.exe	91
PID 384 wrote to memory of 2424	384	051ce434ea8ea139cb3fc0cd61b21a99.exe	91
PID 2424 wrote to memory of 4080	2424	ufyabb.exe	92
PID 2424 wrote to memory of 4080	2424	ufyabb.exe	92
PID 2424 wrote to memory of 4080	2424	ufyabb.exe	92
PID 2424 wrote to memory of 4080	2424	ufyabb.exe	92

C:\Users\Admin\AppData\Local\Temp\051ce434ea8ea139cb3fc0cd61b21a99.exe
"C:\Users\Admin\AppData\Local\Temp\051ce434ea8ea139cb3fc0cd61b21a99.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:384
- C:\Users\Admin\AppData\Local\Temp\ufyabb.exe
  "C:\Users\Admin\AppData\Local\Temp\ufyabb.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2424
- - C:\Users\Admin\AppData\Local\Temp\ufyabb.exe
    "C:\Users\Admin\AppData\Local\Temp\ufyabb.exe"
    3⤵
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:4080

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

rdnhexth.c

Path C:\Users\Admin\AppData\Local\Temp\rdnhexth.c
Size 304KB
SHA256 5247cc6c9ca9dbab728327d290a76cd05be6cd74682dbec5f19e5a4934a58e03
MD5 5422b38bbfba1196cf692a1d6cbabd28
SHA1 6b6c03f98471ff2d01c047c4d167aa296050f405
SHA512 08c874a7d0e46c1e4afc445d8335169b5836ebfec7bb2be9e7713868144c221feae2d1f6ea4cb32f1dfd27b2fde650d5d0569c47dafbc58de7fcd3eaada0f909
SSDEEP 6144:37F14EZi1yEaWd9O72TAejPszkXHb4i3U/nbtJtQn3am/2LHoU2dBgJdC:B1x8d9O72TAejPsw74iE/zt82Tozfz
MD5 SHA1 SHA512 SSDEEP

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ufyabb.exe

Path C:\Users\Admin\AppData\Local\Temp\ufyabb.exe
Size 526KB
SHA256 d3aa0b25ae8642adba83223811333cada5ffeaad584b7391b03e0f7fb28d864f
MD5 101a2de82607b0f99ef5d4a810896c9b
SHA1 34c52d9c349da842c27e76afb716227857a57cdb
SHA512 2a62c1c7a319437f94f5f913f27a55a1274284eccdec5effa4689f9630ab64359c751375c8bac3d1af952bf2232a7230fa7044c6d1d588cc4f37c474117ee278
SSDEEP 12288:6u6VOlbAbXXlMAXyD54HOU36Xkno+A48vEgnVw7xMuJYjZXU7CSU:6u6VOlbAbXXlMGqkE+8vEwg6Zr
MD5 SHA1 SHA512 SSDEEP

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memory/2424-5-0x0000000001080000-0x0000000001082000-memory.dmp

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memory/4080-15-0x0000000002A70000-0x0000000002A80000-memory.dmp

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memory/4080-17-0x0000000002A70000-0x0000000002A80000-memory.dmp

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memory/4080-11-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/4080-13-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/4080-14-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/4080-8-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/4080-16-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/4080-10-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/4080-18-0x0000000002A70000-0x0000000002A80000-memory.dmp

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memory/4080-19-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/4080-20-0x0000000002A70000-0x0000000002A80000-memory.dmp

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memory/4080-21-0x0000000002A70000-0x0000000002A80000-memory.dmp

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memory/4080-22-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/4080-24-0x0000000002A70000-0x0000000002A80000-memory.dmp

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memory/4080-27-0x0000000002A70000-0x0000000002A80000-memory.dmp

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