nanocore | 0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02

General

Target

0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02N.exe
Size

255KB
MD5

3b75c20cf327eecb84db6eed60ab86b0
SHA1

81c789241566d364be8e9eb53bef0e0dbd7d4058
SHA256

0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02
SHA512

e5a90399af12531d04ab36a5cfeabea5cbf84b019bcd8e8f7fe295cebcd3b4167c87c6bf0048c08b4e835fba5e3f26c592b7f9766ac0689f880ec167fc136d64
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQS4P:EeGUA5YZazpXUmZh94P

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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02N.exe

Executes dropped EXE 2 IoCs

pid	Process
4556	a1punf5t2of.exe
220	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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02N.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 4556 set thread context of 220	4556	a1punf5t2of.exe	97

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	0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02N.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
220	a1punf5t2of.exe
220	a1punf5t2of.exe
220	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
220	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	220	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3788 wrote to memory of 4556	3788	0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02N.exe	96
PID 3788 wrote to memory of 4556	3788	0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02N.exe	96
PID 3788 wrote to memory of 4556	3788	0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02N.exe	96
PID 4556 wrote to memory of 220	4556	a1punf5t2of.exe	97
PID 4556 wrote to memory of 220	4556	a1punf5t2of.exe	97
PID 4556 wrote to memory of 220	4556	a1punf5t2of.exe	97
PID 4556 wrote to memory of 220	4556	a1punf5t2of.exe	97
PID 4556 wrote to memory of 220	4556	a1punf5t2of.exe	97
PID 4556 wrote to memory of 220	4556	a1punf5t2of.exe	97
PID 4556 wrote to memory of 220	4556	a1punf5t2of.exe	97
PID 4556 wrote to memory of 220	4556	a1punf5t2of.exe	97

C:\Users\Admin\AppData\Local\Temp\0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02N.exe
"C:\Users\Admin\AppData\Local\Temp\0f7f428f1df13d654e283734fa732c0bc324f0fff64a3810f17d5c544542ff02N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3788
- 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:4556
- - 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:220

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
256KB

MD5
c740638d3b3297df55608f10cb903958

SHA1
f6e7d45d69a051c7618c04b56877a34622628a7a

SHA256
5b76ea789052d1bcf8b3bfc6ae59189456d8d1eec45737f75038e686154e0f20

SHA512
60a33934f98c4825323e89f370c7c460f5ac346dc44cdeb42ca30e511d4dbb69b25f009083f8fee474c90cb450d4ed51909bf7ba922ae0f90c1b4e0aeaf71290

Download Submit
memory/220-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/220-38-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/220-35-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/220-34-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/220-32-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/220-31-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/220-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/220-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3788-5-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/3788-3-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/3788-1-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/3788-2-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/3788-4-0x00000000754D2000-0x00000000754D3000-memory.dmp

Filesize
4KB

Download
memory/3788-22-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/3788-7-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/3788-6-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/3788-0-0x00000000754D2000-0x00000000754D3000-memory.dmp

Filesize
4KB

Download
memory/4556-25-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/4556-21-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/4556-24-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/4556-37-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download
memory/4556-23-0x00000000754D0000-0x0000000075A81000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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