nanocore | b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28

General

Target

b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe
Size

254KB
MD5

03efa084cc3f8f51111e8d6cb79dd6c0
SHA1

2acd95f4592909b4cf1ba7bc2665a829384eed3b
SHA256

b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28
SHA512

811e958a3a3f6d3218749ac69e5aa731e1e371503109dbdde28fa36dd81cc7c39328288b9535ad94abef8c3fb2c9f856c572e2319ed48f77b7a1faa34a7c5e3a
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4i:EeGUA5YZazpXUmZhPi

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
Executes dropped EXE 2 IoCs

Processes:

a1punf5t2of.exea1punf5t2of.exe

pid process

2236 a1punf5t2of.exe
2776 a1punf5t2of.exe
Loads dropped DLL 2 IoCs

Processes:

b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exea1punf5t2of.exe

pid process

1288 b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe
2236 a1punf5t2of.exe

pid	process
2236	a1punf5t2of.exe
2776	a1punf5t2of.exe

pid	process
1288	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe
2236	a1punf5t2of.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

a1punf5t2of.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a1punf5t2of.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

a1punf5t2of.exe

description pid process target process

PID 2236 set thread context of 2776 2236 a1punf5t2of.exe a1punf5t2of.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a1punf5t2of.exe

description	pid	process	target process
PID 2236 set thread context of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe

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

Processes:

b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exea1punf5t2of.exea1punf5t2of.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.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

Processes:

a1punf5t2of.exe

pid process

2776 a1punf5t2of.exe
2776 a1punf5t2of.exe
2776 a1punf5t2of.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

a1punf5t2of.exe

pid process

2776 a1punf5t2of.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a1punf5t2of.exe

description pid process

Token: SeDebugPrivilege 2776 a1punf5t2of.exe

pid	process
2776	a1punf5t2of.exe
2776	a1punf5t2of.exe
2776	a1punf5t2of.exe

pid	process
2776	a1punf5t2of.exe

description	pid	process
Token: SeDebugPrivilege	2776	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exea1punf5t2of.exe

description	pid	process	target process
PID 1288 wrote to memory of 2236	1288	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	a1punf5t2of.exe
PID 1288 wrote to memory of 2236	1288	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	a1punf5t2of.exe
PID 1288 wrote to memory of 2236	1288	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	a1punf5t2of.exe
PID 1288 wrote to memory of 2236	1288	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	a1punf5t2of.exe
PID 1288 wrote to memory of 2236	1288	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	a1punf5t2of.exe
PID 1288 wrote to memory of 2236	1288	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	a1punf5t2of.exe
PID 1288 wrote to memory of 2236	1288	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe
PID 2236 wrote to memory of 2776	2236	a1punf5t2of.exe	a1punf5t2of.exe

C:\Users\Admin\AppData\Local\Temp\b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe
"C:\Users\Admin\AppData\Local\Temp\b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2236
- - 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:2776

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

System Information Discovery

2

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

\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
254KB

MD5
f085d61cdd9ea37277a05f56e2d675ab

SHA1
7859e1afa5824c0d113400b9cca5acd649047009

SHA256
5831f6751d19c73d9345a9820254069a6c44774737823a10259c07fa46f48d99

SHA512
23b448c8faf7d24c8fb6cf9cbf7090c80a3c1caf46c3283d07dc7a0b357fa789ad47c88d5d01355a848d7fd6a71cf45e5d34a6f6964c487facd899c8b5666ef0

Download Submit
memory/1288-0-0x0000000073FD1000-0x0000000073FD2000-memory.dmp

Filesize
4KB

Download
memory/1288-1-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/1288-2-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/1288-3-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/1288-4-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/1288-5-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/1288-14-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2236-19-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2236-43-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2236-17-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2236-18-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2236-16-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2236-20-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2236-21-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2236-15-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2776-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2776-33-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-41-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2776-39-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads