nanocore | 8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31

General

Target

8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31.exe
Size

254KB
MD5

6c2bd80509268a8a12cbbb903172e992
SHA1

a4efa65945aaa2e72492d6c90a058dc1d20f46e3
SHA256

8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31
SHA512

66a3ba1bc30720b2efb08010b3d127a3e4f86e4dab38d4fd46fdba4180eff1210337da97fc8b0625157e1feed6cc94bf9bb5231c90004010edec12568ccbf14a
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4E:EeGUA5YZazpXUmZhPE

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
Nanocore family
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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31.exe

Executes dropped EXE 2 IoCs

pid	Process
5048	a1punf5t2of.exe
2032	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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31.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 5048 set thread context of 2032	5048	a1punf5t2of.exe	98

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	8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31.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
2032	a1punf5t2of.exe
2032	a1punf5t2of.exe
2032	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2032	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2032	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 5048	2520	8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31.exe	97
PID 2520 wrote to memory of 5048	2520	8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31.exe	97
PID 2520 wrote to memory of 5048	2520	8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31.exe	97
PID 5048 wrote to memory of 2032	5048	a1punf5t2of.exe	98
PID 5048 wrote to memory of 2032	5048	a1punf5t2of.exe	98
PID 5048 wrote to memory of 2032	5048	a1punf5t2of.exe	98
PID 5048 wrote to memory of 2032	5048	a1punf5t2of.exe	98
PID 5048 wrote to memory of 2032	5048	a1punf5t2of.exe	98
PID 5048 wrote to memory of 2032	5048	a1punf5t2of.exe	98
PID 5048 wrote to memory of 2032	5048	a1punf5t2of.exe	98
PID 5048 wrote to memory of 2032	5048	a1punf5t2of.exe	98

C:\Users\Admin\AppData\Local\Temp\8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31.exe
"C:\Users\Admin\AppData\Local\Temp\8dbcbae2519137f60138985a2dbc608ac867c81aa53acb30d77fa5fb3b5a0f31.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- 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:5048
- - 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:2032

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
254KB

MD5
bc4253b1b7bf00344a0ba5317398c558

SHA1
5f1caff4a3728084756c7a05853fc9069356fcca

SHA256
9cc7560c75523db0841b811e4ece49e02b6333a74aa403a413e741800eb6e3aa

SHA512
575da170d7fa0fa7bccdd3f42aa3d4a087cd3ff5da34d316eaab49d1f4a21975d350522d5dab50dc5d5995f90760be36ad7e37dde8aafcf9a08113a3f5ccdca4

Download Submit
memory/2032-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2032-42-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2032-39-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2032-38-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2032-36-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2032-35-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2032-34-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2032-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2032-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2520-6-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2520-3-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2520-1-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2520-2-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2520-4-0x00000000748B2000-0x00000000748B3000-memory.dmp

Filesize
4KB

Download
memory/2520-5-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2520-0-0x00000000748B2000-0x00000000748B3000-memory.dmp

Filesize
4KB

Download
memory/2520-22-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/2520-7-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/5048-21-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/5048-28-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/5048-27-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/5048-26-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/5048-23-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/5048-25-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/5048-41-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download
memory/5048-24-0x00000000748B0000-0x0000000074E61000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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