nanocore | 273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee

General

Target

273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee.exe
Size

282KB
MD5

b5a3a966b4bfcd5fecfc8c451424249d
SHA1

a16ae4d96d9b848315dd0aa047dde926a35834f8
SHA256

273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee
SHA512

cf59a0e53f534f4799ff526da03543debfbb5af14f34d1ad91a56fc7822b53ef8150061705785a8c09db5a78c656702302bf74db2d5dda93b35b90a737485845
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfl:boSeGUA5YZazpXUmZhZ6SI

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee.exe

Executes dropped EXE 2 IoCs

pid	Process
1844	a1punf5t2of.exe
2612	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee.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 1844 set thread context of 2612	1844	a1punf5t2of.exe	101

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	273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2612	a1punf5t2of.exe
2612	a1punf5t2of.exe
2612	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2612	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2612	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 1844	4936	273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee.exe	100
PID 4936 wrote to memory of 1844	4936	273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee.exe	100
PID 4936 wrote to memory of 1844	4936	273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee.exe	100
PID 1844 wrote to memory of 2612	1844	a1punf5t2of.exe	101
PID 1844 wrote to memory of 2612	1844	a1punf5t2of.exe	101
PID 1844 wrote to memory of 2612	1844	a1punf5t2of.exe	101
PID 1844 wrote to memory of 2612	1844	a1punf5t2of.exe	101
PID 1844 wrote to memory of 2612	1844	a1punf5t2of.exe	101
PID 1844 wrote to memory of 2612	1844	a1punf5t2of.exe	101
PID 1844 wrote to memory of 2612	1844	a1punf5t2of.exe	101
PID 1844 wrote to memory of 2612	1844	a1punf5t2of.exe	101

C:\Users\Admin\AppData\Local\Temp\273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee.exe
"C:\Users\Admin\AppData\Local\Temp\273569a36a5df1f734e8870696181e1f2cdcb51e62afb2cf708c0a71a45f6cee.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4936
- 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:1844
- - 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:2612

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
282KB

MD5
d9247955cfc5d1ba1c5f937e9d29d540

SHA1
b36a2609dc9338107cecad897cad05f25accfcd7

SHA256
f92843d73c1edaf9de76fab4e7137214ba09acf5a03c19501f9c18587f5ffecd

SHA512
10a9e821057bfc4d110dbd1868572e712057e33de75e4e871163fdcbaba83ea902151f57b91de822d71d5c76434bd555c1336fac5649438f88cc9c27e26514ec

Download Submit
memory/1844-39-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/1844-26-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/1844-25-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/1844-24-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/1844-23-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/1844-21-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/2612-32-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/2612-33-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/2612-40-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/2612-37-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/2612-36-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/2612-34-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/2612-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2612-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4936-2-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/4936-3-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/4936-0-0x0000000074FD2000-0x0000000074FD3000-memory.dmp

Filesize
4KB

Download
memory/4936-4-0x0000000074FD2000-0x0000000074FD3000-memory.dmp

Filesize
4KB

Download
memory/4936-7-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/4936-22-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/4936-5-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/4936-1-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download
memory/4936-6-0x0000000074FD0000-0x0000000075581000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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