nanocore | db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101

General

Target

db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101N.exe
Size

255KB
MD5

77eef7dd7e95bc2abb9b7e1ce8c563f0
SHA1

dd22756ba279a54c3fd82009310f5ca4d1198b42
SHA256

db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101
SHA512

cecf4a7707262d2b19e3ebdf69f0a71d363e86f21351c35e489f8b2dccb8e8ae46e20446c38e4f84a088afceaeea9aa434270f46513e1fbbd46db181f9f9c6a4
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQSM:EeGUA5YZazpXUmZhdM

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101N.exe

Executes dropped EXE 2 IoCs

pid	Process
4284	a1punf5t2of.exe
4640	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101N.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 4284 set thread context of 4640	4284	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	db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101N.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
4640	a1punf5t2of.exe
4640	a1punf5t2of.exe
4640	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4640	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4640	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 4284	1388	db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101N.exe	97
PID 1388 wrote to memory of 4284	1388	db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101N.exe	97
PID 1388 wrote to memory of 4284	1388	db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101N.exe	97
PID 4284 wrote to memory of 4640	4284	a1punf5t2of.exe	98
PID 4284 wrote to memory of 4640	4284	a1punf5t2of.exe	98
PID 4284 wrote to memory of 4640	4284	a1punf5t2of.exe	98
PID 4284 wrote to memory of 4640	4284	a1punf5t2of.exe	98
PID 4284 wrote to memory of 4640	4284	a1punf5t2of.exe	98
PID 4284 wrote to memory of 4640	4284	a1punf5t2of.exe	98
PID 4284 wrote to memory of 4640	4284	a1punf5t2of.exe	98
PID 4284 wrote to memory of 4640	4284	a1punf5t2of.exe	98

C:\Users\Admin\AppData\Local\Temp\db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101N.exe
"C:\Users\Admin\AppData\Local\Temp\db2f17eac238eb35848a541d4876b0084d8baaaaaeb0d0ab2a5d2112c610d101N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1388
- 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:4284
- - 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:4640

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
255KB

MD5
233beb86cf61f925704a846b36d1f990

SHA1
4b96ccfb73cefe6537d1bf31879b56048b007e41

SHA256
64e7c6e44a055a80d016fe3d997b40c448135e4240447850ff87fad22af41008

SHA512
5a1d31c8136242a8bbbb2c8bd1daa486f369c841816387fae2f6c8a0e1a8440caa8d217b34794fd17349306a5e5425824943e41fdeb0bb4ef3c43fbaaa39deeb

Download Submit
memory/1388-22-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1388-1-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1388-2-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1388-3-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1388-4-0x00000000754C2000-0x00000000754C3000-memory.dmp

Filesize
4KB

Download
memory/1388-5-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1388-6-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1388-7-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/1388-0-0x00000000754C2000-0x00000000754C3000-memory.dmp

Filesize
4KB

Download
memory/4284-25-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4284-23-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4284-21-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4284-24-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4284-26-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4284-27-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4284-40-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4640-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4640-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4640-33-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4640-35-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4640-34-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4640-37-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4640-38-0x00000000754C0000-0x0000000075A71000-memory.dmp

Filesize
5.7MB

Download
memory/4640-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4640-41-0x00000000754C0000-0x0000000075A71000-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