nanocore | fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c

General

Target

fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe
Size

255KB
MD5

0fb3c8c8ccb6c70780c93ba34b634301
SHA1

b1e874ee373732b8d60c8fabaadede58a712bed2
SHA256

fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c
SHA512

2961dd26638fe153e8d1a4c99a4443e88b5673bd73c5d918c2749f633070ab8eeb8a63d247e6bd8ad876c5c760acd2863e35fe9fd686c799eff4bdf35cae7aa2
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQSd:EeGUA5YZazpXUmZhdd

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
2796	a1punf5t2of.exe
2476	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2724	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe
2796	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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.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 2796 set thread context of 2476	2796	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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2476	a1punf5t2of.exe
2476	a1punf5t2of.exe
2476	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2476	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2476	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 2796	2724	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe	31
PID 2724 wrote to memory of 2796	2724	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe	31
PID 2724 wrote to memory of 2796	2724	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe	31
PID 2724 wrote to memory of 2796	2724	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe	31
PID 2724 wrote to memory of 2796	2724	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe	31
PID 2724 wrote to memory of 2796	2724	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe	31
PID 2724 wrote to memory of 2796	2724	fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe	31
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32
PID 2796 wrote to memory of 2476	2796	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe
"C:\Users\Admin\AppData\Local\Temp\fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2724
- 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:2796
- - 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:2476

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
44fdd68b51f400aab086b8fcc2dd0096

SHA1
e03d7addffdb523d2e627e8f63465bdd2e678284

SHA256
916b9fc987293a154e9fe1703e20a7eae1d3e423773a740d187ddae89d851a24

SHA512
66e3139d6550c6c15f2c2145234fb3d6e166929df6bd5d71bf8f3f32ae307e2bd77adb21f9c7a4f24c3bce0cacf94ac2ed50074cb1ec87fba22887314281d2a8

Download Submit
memory/2476-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2476-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2476-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2476-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2476-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2476-36-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2476-38-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2476-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2724-5-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-14-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-0-0x0000000074781000-0x0000000074782000-memory.dmp

Filesize
4KB

Download
memory/2724-4-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-3-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-2-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-1-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-17-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-18-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-16-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-15-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-40-0x0000000074780000-0x0000000074D2B000-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