nanocore | a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6d

General

Target

a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe
Size

810KB
MD5

4734fa81779693fd529de3f3a32bc170
SHA1

18d34a8d3d2d24c58063514eac827d7e1927b6ab
SHA256

a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6d
SHA512

b993ebc84cbd58386242a027a2d7172931f7c9f22da39232e0d58e51a1bcf233f46b5e7ad7c192104a9b7eb83b5e4cdfe764c66a85f61f14891c4a4d34a614cd
SSDEEP

24576:A85rNl0k15HDxrUH3sY20fNjaj5sO9VaQS:A8nl0A5HDx90fNk5sO9n

Score

10^/10

nanocore discovery evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

brewsterchristophe.ddns.net:5899

194,147,5,75:5899

Mutex

b8aebc29-8c64-444f-99e6-dc4122e9bbfc

Attributes

activate_away_mode
true
backup_connection_host
194,147,5,75
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-04-29T03:26:40.572298236Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5899
default_group
Default
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
b8aebc29-8c64-444f-99e6-dc4122e9bbfc
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
brewsterchristophe.ddns.net
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
Nanocore family
nanocore

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2624	powershell.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\UDP Manager = "C:\\Program Files (x86)\\UDP Manager\\udpmgr.exe"	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.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	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 764 set thread context of 2612	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	35

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\UDP Manager\udpmgr.exe	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe
File opened for modification	C:\Program Files (x86)\UDP Manager\udpmgr.exe	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2972	schtasks.exe
1716	schtasks.exe
2028	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2624	powershell.exe
2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe
2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe
2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2624	powershell.exe
Token: SeDebugPrivilege	2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 764 wrote to memory of 2624	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	31
PID 764 wrote to memory of 2624	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	31
PID 764 wrote to memory of 2624	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	31
PID 764 wrote to memory of 2624	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	31
PID 764 wrote to memory of 2972	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	32
PID 764 wrote to memory of 2972	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	32
PID 764 wrote to memory of 2972	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	32
PID 764 wrote to memory of 2972	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	32
PID 764 wrote to memory of 2612	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	35
PID 764 wrote to memory of 2612	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	35
PID 764 wrote to memory of 2612	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	35
PID 764 wrote to memory of 2612	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	35
PID 764 wrote to memory of 2612	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	35
PID 764 wrote to memory of 2612	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	35
PID 764 wrote to memory of 2612	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	35
PID 764 wrote to memory of 2612	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	35
PID 764 wrote to memory of 2612	764	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	35
PID 2612 wrote to memory of 1716	2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	36
PID 2612 wrote to memory of 1716	2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	36
PID 2612 wrote to memory of 1716	2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	36
PID 2612 wrote to memory of 1716	2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	36
PID 2612 wrote to memory of 2028	2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	38
PID 2612 wrote to memory of 2028	2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	38
PID 2612 wrote to memory of 2028	2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	38
PID 2612 wrote to memory of 2028	2612	a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe	38

C:\Users\Admin\AppData\Local\Temp\a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe
"C:\Users\Admin\AppData\Local\Temp\a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:764
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TYWfRu.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2624
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TYWfRu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp74D2.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2972
- C:\Users\Admin\AppData\Local\Temp\a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.exe
  "C:\Users\Admin\AppData\Local\Temp\a04ce02a12918f225031f3fea0efe8151a386d5477085fecead522b438f41a6dN.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
  - Suspicious use of WriteProcessMemory
  PID:2612
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UDP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7713.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1716
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UDP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7762.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp74D2.tmp

Filesize
1KB

MD5
5e980bcbeb900975e1fd3e753b9e3cbd

SHA1
a81b274643f25297f8bb8bd32390acaeaebdf9bb

SHA256
065a8738c06e136987dcbd89980564aff1fe88ce1fd3b972613cab605510cdbe

SHA512
a50e0358f6930a77c0da4e5a5b9955de5c1ae0aa4c21a6641e51f62a002d1a0067f0a8decb7016ab2c585ef0aced299536fc6c82d77e5a996b268c7f46af4ba8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7713.tmp

Filesize
1KB

MD5
73ead8590b5a4baa562f1395f94d9f08

SHA1
8eec0b1baab3a063c557df380e35721f273249bc

SHA256
e9c2523de55e044bb913722e927dd8e457a518f71e70d6dab1709c0f6d4c0fec

SHA512
834ddb6ebd9ec8e45b3345adad04d4ae23e5a62f62f80c81816617f43000ba7d6a7b695233d456dbde2e17651f229065c81a00310ba849ec19bd53acadc73612

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7762.tmp

Filesize
1KB

MD5
c1c4b266e129249076bbe8a15cc5e06c

SHA1
312b8173c264245c834eee91e05dcca845c341f8

SHA256
f336d06dcadca621be6b2dc9493dcb84d871497e65142bc9fdd72c9f250a1b7b

SHA512
0f02ec7700f89d95d29014eec42d13c85234351c3fe1dc6a3efeea52ea76ca4bea3151567a6c798b5ce658d481b424646b43d93e95ccad897356a87a25d45041

Download Submit
memory/764-28-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/764-2-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/764-5-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/764-6-0x0000000000670000-0x000000000067A000-memory.dmp

Filesize
40KB

Download
memory/764-7-0x0000000005440000-0x00000000054B2000-memory.dmp

Filesize
456KB

Download
memory/764-3-0x0000000000430000-0x0000000000446000-memory.dmp

Filesize
88KB

Download
memory/764-15-0x0000000005190000-0x00000000051CA000-memory.dmp

Filesize
232KB

Download
memory/764-1-0x0000000000930000-0x0000000000A00000-memory.dmp

Filesize
832KB

Download
memory/764-4-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/764-0-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/2612-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2612-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-36-0x00000000003D0000-0x00000000003DA000-memory.dmp

Filesize
40KB

Download
memory/2612-37-0x00000000003E0000-0x00000000003FE000-memory.dmp

Filesize
120KB

Download
memory/2612-38-0x0000000000440000-0x000000000044A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads