nanocore | f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aef

General

Target

f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aefN.exe
Size

255KB
MD5

24d3bef5b8cf99bf3edb972ee073fe40
SHA1

ea0433081c59778eb63ab56250bdcd2f74b8c4c0
SHA256

f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aef
SHA512

559fa7c3d1a2a00507e0e1076b7e38bbcebfb719efcfbb40dd0c2efd5b3666f1037a6d4bdee74ed4d4ab478900e1c3ccec96059d70188de354266c9c1464b58f
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQqm:EeGUA5YZazpXUmZhJm

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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aefN.exe

Executes dropped EXE 2 IoCs

pid	Process
2588	a1punf5t2of.exe
4192	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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aefN.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 2588 set thread context of 4192	2588	a1punf5t2of.exe	96

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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aefN.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4192	a1punf5t2of.exe
4192	a1punf5t2of.exe
4192	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4192	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4192	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 2588	1948	f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aefN.exe	95
PID 1948 wrote to memory of 2588	1948	f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aefN.exe	95
PID 1948 wrote to memory of 2588	1948	f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aefN.exe	95
PID 2588 wrote to memory of 4192	2588	a1punf5t2of.exe	96
PID 2588 wrote to memory of 4192	2588	a1punf5t2of.exe	96
PID 2588 wrote to memory of 4192	2588	a1punf5t2of.exe	96
PID 2588 wrote to memory of 4192	2588	a1punf5t2of.exe	96
PID 2588 wrote to memory of 4192	2588	a1punf5t2of.exe	96
PID 2588 wrote to memory of 4192	2588	a1punf5t2of.exe	96
PID 2588 wrote to memory of 4192	2588	a1punf5t2of.exe	96
PID 2588 wrote to memory of 4192	2588	a1punf5t2of.exe	96

C:\Users\Admin\AppData\Local\Temp\f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aefN.exe
"C:\Users\Admin\AppData\Local\Temp\f187765d048a5c16672a99076106baa2715fd8c91e10665844676e4b892a5aefN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1948
- 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:2588
- - 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:4192

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
b41a4358ebdddaed7b63b2dc0fd7fe78

SHA1
2c36fe5e49b0e9e3a462960b2f0a240545fff4c9

SHA256
544c27247b3483152370089e51ad2853d81a0f8083b13e5a772b5763f4e4bf3c

SHA512
b54594b5e59e774ffc489af318e9f5046f237bfc287124a75f813ea55cd391744fa5fdb11501c70d50045c078c0d3f29549f8cc4d5033e0885a22ca92b3b55c6

Download Submit
memory/1948-0-0x0000000074CC2000-0x0000000074CC3000-memory.dmp

Filesize
4KB

Download
memory/1948-1-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/1948-2-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/1948-3-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/1948-4-0x0000000074CC2000-0x0000000074CC3000-memory.dmp

Filesize
4KB

Download
memory/1948-5-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/1948-6-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/1948-7-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/1948-22-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/2588-24-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/2588-23-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/2588-21-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/2588-25-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/2588-26-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/2588-39-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/4192-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4192-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4192-32-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/4192-33-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/4192-34-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/4192-36-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/4192-37-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/4192-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4192-40-0x0000000074CC0000-0x0000000075271000-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