nanocore | 38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bba

General

Target

38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe
Size

255KB
MD5

0f145b0ea82bf9216e1ea1c50f519130
SHA1

656201fdbcfe1f0ef23f59411c4878fd2b4072a0
SHA256

38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bba
SHA512

f9f0e64d632e385f5f8fe71369a995499c037faa1e20a43b9cecaf07a5a13beb920ccdb9e9674f334ed18b315f050f42d4797f4185574a1194901a0c710c21fe
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQqW:EeGUA5YZazpXUmZhJW

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

pid	Process
2680	a1punf5t2of.exe
2724	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2012	38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe
2680	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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.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 2680 set thread context of 2724	2680	a1punf5t2of.exe	32

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	38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.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
2724	a1punf5t2of.exe
2724	a1punf5t2of.exe
2724	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2724	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2724	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 2680	2012	38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe	31
PID 2012 wrote to memory of 2680	2012	38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe	31
PID 2012 wrote to memory of 2680	2012	38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe	31
PID 2012 wrote to memory of 2680	2012	38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe	31
PID 2012 wrote to memory of 2680	2012	38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe	31
PID 2012 wrote to memory of 2680	2012	38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe	31
PID 2012 wrote to memory of 2680	2012	38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe	31
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32
PID 2680 wrote to memory of 2724	2680	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe
"C:\Users\Admin\AppData\Local\Temp\38b8eb4f83b1e90951ebb7d5b7001b155bf08ed5236d3f12d5e5d88f8baf3bbaN.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2012
- 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:2680
- - 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:2724

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
255KB

MD5
92e92483ab621033cfdbb5b809b4a4d0

SHA1
5553d1eacd8672c78651830938c90a8ea516cb77

SHA256
dd8bdfefb8831487ab2e202d27532e24ab93fbbd6413ceeb87fdd2a8676e07a9

SHA512
62b77702b679023ef3a1c50e959f98f4154025e35b724ff2de9ae2be5e0edd26a546f896347c6eeda203a0edbcdcf959dc520e741f62f47f931d339d04a2c481

Download Submit
memory/2012-15-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2012-1-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2012-2-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2012-3-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2012-4-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2012-5-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2012-6-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2012-0-0x00000000749E1000-0x00000000749E2000-memory.dmp

Filesize
4KB

Download
memory/2680-19-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2680-44-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2680-18-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2680-17-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2680-20-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2680-21-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2680-22-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2680-16-0x00000000749E0000-0x0000000074F8B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2724-42-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2724-40-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2724-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2724-34-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2724-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2724-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2724-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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