nanocore | a51c6f9b3e3e74a89aff54e5f6b68995db00f4c88701a2bbd29331a23c05afc8

General

Target

87225db143a3c5bef68d42ae4fbbdf40N.exe
Size

281KB
MD5

87225db143a3c5bef68d42ae4fbbdf40
SHA1

0729df47a4f205632005d27fd8655031b86bc571
SHA256

a51c6f9b3e3e74a89aff54e5f6b68995db00f4c88701a2bbd29331a23c05afc8
SHA512

734493929ee4d25a1090cc0bea6e0e6dbb8331f57a9ae3dd6cdebfa4c23b31a7ce2466dd086773527a326666c7fa94f52c868c491492a49e73ba3dd5e3cdf06a
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfe:boSeGUA5YZazpXUmZhZ6SD

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sysupdate24.ddns.net:45400

Mutex

ae82ab7f-db07-49ee-9d2b-76075d76f37f

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
buffer_size
65535
build_time
2020-04-24T17:41:53.492468936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
45400
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
ae82ab7f-db07-49ee-9d2b-76075d76f37f
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
sysupdate24.ddns.net
primary_dns_server
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
2712	a1punf5t2of.exe
1160	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2332	87225db143a3c5bef68d42ae4fbbdf40N.exe
2712	a1punf5t2of.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	87225db143a3c5bef68d42ae4fbbdf40N.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	a1punf5t2of.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2712 set thread context of 1160	2712	a1punf5t2of.exe	31

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 3 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	87225db143a3c5bef68d42ae4fbbdf40N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1160	a1punf5t2of.exe
1160	a1punf5t2of.exe
1160	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1160	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1160	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 2712	2332	87225db143a3c5bef68d42ae4fbbdf40N.exe	30
PID 2332 wrote to memory of 2712	2332	87225db143a3c5bef68d42ae4fbbdf40N.exe	30
PID 2332 wrote to memory of 2712	2332	87225db143a3c5bef68d42ae4fbbdf40N.exe	30
PID 2332 wrote to memory of 2712	2332	87225db143a3c5bef68d42ae4fbbdf40N.exe	30
PID 2332 wrote to memory of 2712	2332	87225db143a3c5bef68d42ae4fbbdf40N.exe	30
PID 2332 wrote to memory of 2712	2332	87225db143a3c5bef68d42ae4fbbdf40N.exe	30
PID 2332 wrote to memory of 2712	2332	87225db143a3c5bef68d42ae4fbbdf40N.exe	30
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31
PID 2712 wrote to memory of 1160	2712	a1punf5t2of.exe	31

C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe
"C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2712
- - C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
    "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
    3⤵
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:1160

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
281KB

MD5
7e6de438a7e354c512f67b2b4cb62f9c

SHA1
e9d6246e4d59ea2dc73d351dba0672d929d98852

SHA256
06bc4c9a080d410bde9c0ba88564923276bcdfe544de50c52b75e20d0caae56a

SHA512
7b8de56d72cbd4e53f9ef164664bae57fb69d99a6b40a07d6cd2b5d189cb58bb33894697c462037d98df96da48c7b64d15ead7b9012b875c4cb20946a76e18c3

Download Submit
memory/1160-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1160-32-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1160-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1160-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1160-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1160-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1160-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1160-34-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2332-1-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/2332-2-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/2332-12-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/2332-3-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/2332-0-0x0000000074301000-0x0000000074302000-memory.dmp

Filesize
4KB

Download
memory/2712-14-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/2712-15-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/2712-13-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/2712-36-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads