nanocore | 81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005

General

Target

81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
Size

1.1MB
MD5

9e764a4af39e8670ebbc57b40bd96ce0
SHA1

226b125cf5ef38cbc06814f4677f6e45de71f2f0
SHA256

81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005
SHA512

526e1276036c95dd81a76ccc12e9cd2a5bb940cb79c30e87983417b89e563eca4feca3ee674bb5fb41e3e38067b93828bc94871623c9e0b49617bbf30db58da6
SSDEEP

24576:1AHnh+eWsN3skA4RV1Hom2KXMmHahZB/Nep86f3YAm4W5y:kh+ZkldoPK8Yahb/NKKAm9y

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

160.202.163.242:6765

Mutex

c0a66e70-712e-4e13-85d0-5362a812b1a5

Attributes

activate_away_mode
true
backup_connection_host
160.202.163.242
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-02-24T16:03:16.653191036Z
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
6765
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
c0a66e70-712e-4e13-85d0-5362a812b1a5
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
160.202.163.242
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

Drops startup file 1 IoCs

Processes:

81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VsGraphicsDesktopEngine.lnk	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\UDP Manager = "C:\\Program Files (x86)\\UDP Manager\\udpmgr.exe"	RegAsm.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

RegAsm.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe

description	pid	Process	procid_target
PID 2408 set thread context of 2456	2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe	30

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

description	ioc	Process
File created	C:\Program Files (x86)\UDP Manager\udpmgr.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\UDP Manager\udpmgr.exe	RegAsm.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 4 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

Processes:

81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exeRegAsm.exeschtasks.exeschtasks.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exeschtasks.exe

pid	Process
2768	schtasks.exe
2340	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

RegAsm.exe81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe

pid	Process
2456	RegAsm.exe
2456	RegAsm.exe
2456	RegAsm.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid	Process
2456	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description	pid	Process
Token: SeDebugPrivilege	2456	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe

pid	Process
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe

Suspicious use of SendNotifyMessage 3 IoCs

Processes:

81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe

pid	Process
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exeRegAsm.exe

description	pid	Process	procid_target
PID 2408 wrote to memory of 2456	2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe	30
PID 2408 wrote to memory of 2456	2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe	30
PID 2408 wrote to memory of 2456	2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe	30
PID 2408 wrote to memory of 2456	2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe	30
PID 2408 wrote to memory of 2456	2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe	30
PID 2408 wrote to memory of 2456	2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe	30
PID 2408 wrote to memory of 2456	2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe	30
PID 2408 wrote to memory of 2456	2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe	30
PID 2408 wrote to memory of 2456	2408	81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe	30
PID 2456 wrote to memory of 2340	2456	RegAsm.exe	31
PID 2456 wrote to memory of 2340	2456	RegAsm.exe	31
PID 2456 wrote to memory of 2340	2456	RegAsm.exe	31
PID 2456 wrote to memory of 2340	2456	RegAsm.exe	31
PID 2456 wrote to memory of 2768	2456	RegAsm.exe	33
PID 2456 wrote to memory of 2768	2456	RegAsm.exe	33
PID 2456 wrote to memory of 2768	2456	RegAsm.exe	33
PID 2456 wrote to memory of 2768	2456	RegAsm.exe	33

C:\Users\Admin\AppData\Local\Temp\81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe
"C:\Users\Admin\AppData\Local\Temp\81cfe44ada0789cd03f17951b4948f9df4b691b34a1c7d7e8f336cc346164005N.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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:2456
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UDP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp510.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2340
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UDP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp56E.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp510.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp56E.tmp

Filesize
1KB

MD5
c1c4b266e129249076bbe8a15cc5e06c

SHA1
312b8173c264245c834eee91e05dcca845c341f8

SHA256
f336d06dcadca621be6b2dc9493dcb84d871497e65142bc9fdd72c9f250a1b7b

SHA512
0f02ec7700f89d95d29014eec42d13c85234351c3fe1dc6a3efeea52ea76ca4bea3151567a6c798b5ce658d481b424646b43d93e95ccad897356a87a25d45041

Download Submit
memory/2408-3-0x00000000008B0000-0x00000000008B1000-memory.dmp

Filesize
4KB

Download
memory/2456-4-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2456-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2456-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2456-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2456-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2456-13-0x0000000074432000-0x0000000074434000-memory.dmp

Filesize
8KB

Download
memory/2456-21-0x0000000074432000-0x0000000074434000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads