nanocore | af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846

General

Target

af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846.exe
Size

282KB
MD5

ca1b90a4ba0f6d4906fdc25537432be6
SHA1

e89e186b2531b2767bfc94513e454f3a7e751095
SHA256

af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846
SHA512

73ea81eb8e0c9f0099b55fef6b16545d4bb6312aa9be0e11df969cf8c936ccaf690191333045c50c0b8fced9ef0269b26ca68dae8d3d1cf5c7dbc99d2b1746e0
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfI:boSeGUA5YZazpXUmZhZ6S9

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846.exe

Executes dropped EXE 2 IoCs

pid	Process
2980	a1punf5t2of.exe
4372	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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846.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 2980 set thread context of 4372	2980	a1punf5t2of.exe	90

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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4372	a1punf5t2of.exe
4372	a1punf5t2of.exe
4372	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4372	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4372	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4856 wrote to memory of 2980	4856	af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846.exe	89
PID 4856 wrote to memory of 2980	4856	af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846.exe	89
PID 4856 wrote to memory of 2980	4856	af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846.exe	89
PID 2980 wrote to memory of 4372	2980	a1punf5t2of.exe	90
PID 2980 wrote to memory of 4372	2980	a1punf5t2of.exe	90
PID 2980 wrote to memory of 4372	2980	a1punf5t2of.exe	90
PID 2980 wrote to memory of 4372	2980	a1punf5t2of.exe	90
PID 2980 wrote to memory of 4372	2980	a1punf5t2of.exe	90
PID 2980 wrote to memory of 4372	2980	a1punf5t2of.exe	90
PID 2980 wrote to memory of 4372	2980	a1punf5t2of.exe	90
PID 2980 wrote to memory of 4372	2980	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846.exe
"C:\Users\Admin\AppData\Local\Temp\af3e7f29ca915deadc875710f2ec54db8aa93461638f88bcb89c18e4588f7846.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2980
- - 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:4372

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

Query Registry

1

T1012

System Information Discovery

3

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\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
282KB

MD5
6c61d45dafa935c9a1b376419b77cd14

SHA1
7a2be581df84e78884424460bcc6a3a0054e2a73

SHA256
eceb9daec94ead06204cb5e4b48994ee7004947222b55a5cdf733fd9dcb1a944

SHA512
57eb17b723e0a8a674fc9380b3c2ee4b5d20d6ed7b517ec6bc7ad85fa498e738d9f22a809b6f9647b4038f080b73a3e93fbaf2f24d6101e40aa36dbf4d49f3ad

Download Submit
memory/2980-39-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/2980-26-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/2980-25-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/2980-24-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/2980-23-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/2980-22-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4372-32-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4372-34-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4372-40-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4372-37-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4372-36-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4372-33-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4372-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4372-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4372-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4856-2-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4856-3-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4856-0-0x0000000075572000-0x0000000075573000-memory.dmp

Filesize
4KB

Download
memory/4856-4-0x0000000075572000-0x0000000075573000-memory.dmp

Filesize
4KB

Download
memory/4856-7-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4856-5-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4856-6-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4856-1-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/4856-21-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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