nanocore | f86af7da4a5daff93e983fe54343c96f4aa65864719f18132cfc60e6d8341084

General

Target

c505136caf180f5e28f7d1617687b9d0N.exe
Size

281KB
MD5

c505136caf180f5e28f7d1617687b9d0
SHA1

1c729298abff48fc5131e96bc4fb22a0db14fc80
SHA256

f86af7da4a5daff93e983fe54343c96f4aa65864719f18132cfc60e6d8341084
SHA512

1083225d561ce0989dd02f9bee3d22275b00d8b8cab588a3ec37227923f0ca46b9897e84065efde05c6434cb368e62439c0197d133a2fa69650f8b3338a9af7c
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkf+:boSeGUA5YZazpXUmZhZ6Sr

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

Executes dropped EXE 2 IoCs

pid	Process
2772	a1punf5t2of.exe
2680	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2796	c505136caf180f5e28f7d1617687b9d0N.exe
2772	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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	c505136caf180f5e28f7d1617687b9d0N.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 2772 set thread context of 2680	2772	a1punf5t2of.exe	30

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	c505136caf180f5e28f7d1617687b9d0N.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
2680	a1punf5t2of.exe
2680	a1punf5t2of.exe
2680	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2680	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2680	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 2772	2796	c505136caf180f5e28f7d1617687b9d0N.exe	29
PID 2796 wrote to memory of 2772	2796	c505136caf180f5e28f7d1617687b9d0N.exe	29
PID 2796 wrote to memory of 2772	2796	c505136caf180f5e28f7d1617687b9d0N.exe	29
PID 2796 wrote to memory of 2772	2796	c505136caf180f5e28f7d1617687b9d0N.exe	29
PID 2796 wrote to memory of 2772	2796	c505136caf180f5e28f7d1617687b9d0N.exe	29
PID 2796 wrote to memory of 2772	2796	c505136caf180f5e28f7d1617687b9d0N.exe	29
PID 2796 wrote to memory of 2772	2796	c505136caf180f5e28f7d1617687b9d0N.exe	29
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30
PID 2772 wrote to memory of 2680	2772	a1punf5t2of.exe	30

C:\Users\Admin\AppData\Local\Temp\c505136caf180f5e28f7d1617687b9d0N.exe
"C:\Users\Admin\AppData\Local\Temp\c505136caf180f5e28f7d1617687b9d0N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- 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"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2772
- - 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:2680

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
281KB

MD5
60884740cadf69815d2151a1f4f441e6

SHA1
ae6b4240add6f17772b7d5529c5e5070c9435b9c

SHA256
590c0d7e9663468fe4590859c28f95b7fce5f78e239561f3187d4fa2a2455e5a

SHA512
daae7d77d92bcefd03bce47908c90ea5d7e6ffb7c25f0052e86b7d5d4c99504b6a1365245574cad476a3ae1de326400b7aaf1aa81ea46aaea41fea5fa830c8cb

Download Submit
memory/2680-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-33-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-41-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-39-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2680-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2680-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2772-43-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2772-15-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2772-19-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2772-18-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2772-17-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2772-21-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2772-16-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2772-20-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-14-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-0-0x00000000740B1000-0x00000000740B2000-memory.dmp

Filesize
4KB

Download
memory/2796-1-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-5-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-4-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-2-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2796-3-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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