nanocore | 05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38d

General

Target

05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38dN.exe
Size

280KB
MD5

a47e0a3663f8b58507563b2c16c2d250
SHA1

89ef9a3bbc858ff6b2033adbc68b4c1d48264dcc
SHA256

05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38d
SHA512

39ad1b557096ca74077f4a980ee96675a1360799598155eacadfd98d7a6f34365b7bf979ed3243f849d7b30dc8be4ff23ed89181b5724ea69a929998b8df754b
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66f3K:boSeGUA5YZazpXUmZhZ6fK

Score

10^/10

nanocore defense_evasion discovery 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	05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38dN.exe

Executes dropped EXE 2 IoCs

pid	Process
3000	a1punf5t2of.exe
4544	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"	05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38dN.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_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 3000 set thread context of 4544	3000	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	05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38dN.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
4544	a1punf5t2of.exe
4544	a1punf5t2of.exe
4544	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4544	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4544	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3496 wrote to memory of 3000	3496	05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38dN.exe	89
PID 3496 wrote to memory of 3000	3496	05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38dN.exe	89
PID 3496 wrote to memory of 3000	3496	05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38dN.exe	89
PID 3000 wrote to memory of 4544	3000	a1punf5t2of.exe	96
PID 3000 wrote to memory of 4544	3000	a1punf5t2of.exe	96
PID 3000 wrote to memory of 4544	3000	a1punf5t2of.exe	96
PID 3000 wrote to memory of 4544	3000	a1punf5t2of.exe	96
PID 3000 wrote to memory of 4544	3000	a1punf5t2of.exe	96
PID 3000 wrote to memory of 4544	3000	a1punf5t2of.exe	96
PID 3000 wrote to memory of 4544	3000	a1punf5t2of.exe	96
PID 3000 wrote to memory of 4544	3000	a1punf5t2of.exe	96

C:\Users\Admin\AppData\Local\Temp\05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38dN.exe
"C:\Users\Admin\AppData\Local\Temp\05e4da2036e45d49b716262f7e55d1e15b1a26bbd6a6f29181be3ce206a8d38dN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3496
- 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:3000
- - 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:4544

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
280KB

MD5
d359ea4cd20ebcecb9e46a3ad443b574

SHA1
c9cec4f2b41122e3b50f65462ce96bd312cc8ae2

SHA256
1b5b5d48f31611b8a8f86c66d54c0d46e41da3c475ef9f6abafd61fe388d4e42

SHA512
b432b0be2135b7f060ec1f08dbc09b299d36a1f94084b689edb7894e89f1305b6e59a39df60182d0d52eeb1a0152146faa1d471d35a979e3a22f0909b49d1c84

Download Submit
memory/3000-39-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3000-27-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3000-26-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3000-25-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3000-24-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3000-23-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3000-21-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3496-6-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3496-7-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3496-0-0x0000000074FB2000-0x0000000074FB3000-memory.dmp

Filesize
4KB

Download
memory/3496-22-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3496-5-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3496-4-0x0000000074FB2000-0x0000000074FB3000-memory.dmp

Filesize
4KB

Download
memory/3496-3-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3496-2-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/3496-1-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/4544-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4544-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4544-33-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/4544-34-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/4544-36-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/4544-37-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download
memory/4544-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4544-40-0x0000000074FB0000-0x0000000075561000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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