nanocore | 7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7

General

Target

7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7.exe
Size

255KB
MD5

ef5377cd164730aaf7725c706d68c643
SHA1

ead51cd7f72272afaada017aaf65847463a1434e
SHA256

7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7
SHA512

434a685901c8bd31e321d55cb2e167a9d4ce71d4b7a8516ffcd1950a316845ff478d853faeee7eb1d9bd3cc2e4fd558aff06b0a0887bae9d29604776ae0cfa30
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ9A:EeGUA5YZazpXUmZhmA

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7.exe

Executes dropped EXE 2 IoCs

pid	Process
3684	a1punf5t2of.exe
4716	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7.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 3684 set thread context of 4716	3684	a1punf5t2of.exe	88

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	7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7.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
4716	a1punf5t2of.exe
4716	a1punf5t2of.exe
4716	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4716	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4716	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 688 wrote to memory of 3684	688	7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7.exe	82
PID 688 wrote to memory of 3684	688	7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7.exe	82
PID 688 wrote to memory of 3684	688	7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7.exe	82
PID 3684 wrote to memory of 4716	3684	a1punf5t2of.exe	88
PID 3684 wrote to memory of 4716	3684	a1punf5t2of.exe	88
PID 3684 wrote to memory of 4716	3684	a1punf5t2of.exe	88
PID 3684 wrote to memory of 4716	3684	a1punf5t2of.exe	88
PID 3684 wrote to memory of 4716	3684	a1punf5t2of.exe	88
PID 3684 wrote to memory of 4716	3684	a1punf5t2of.exe	88
PID 3684 wrote to memory of 4716	3684	a1punf5t2of.exe	88
PID 3684 wrote to memory of 4716	3684	a1punf5t2of.exe	88

C:\Users\Admin\AppData\Local\Temp\7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7.exe
"C:\Users\Admin\AppData\Local\Temp\7acb35ddae2105ff5536a1e30c9a908cf699383a3b02b4264070f2e9fc8c77a7.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:688
- 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:3684
- - 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:4716

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
255KB

MD5
e6a3788eba3425ef167e8b3f6635dc26

SHA1
7c5271d668c415bb943a3c715cb2022620fa019e

SHA256
bd41f85191e681cb9a55fc43211f65ce9f46493b4a4743e1d21163205831a175

SHA512
a3bfd6098094948c699dc3473f156e99cdcf9c486c1f9a2595eeb681335179ee6668756fadc8ce25f1c38991e5f2b714d09dcd799f13a822de461e5c958a8107

Download Submit
memory/688-21-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/688-0-0x00000000753D2000-0x00000000753D3000-memory.dmp

Filesize
4KB

Download
memory/688-1-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/688-4-0x00000000753D2000-0x00000000753D3000-memory.dmp

Filesize
4KB

Download
memory/688-5-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/688-6-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/688-7-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/688-2-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/688-3-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/3684-27-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/3684-24-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/3684-23-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/3684-22-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/3684-26-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/3684-25-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/3684-40-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/4716-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4716-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4716-33-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/4716-35-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/4716-34-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/4716-37-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/4716-38-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/4716-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4716-41-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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