nanocore | cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f

General

Target

cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exe
Size

278KB
MD5

c53f5caf018a2dcc2c9453dda975d043
SHA1

a642749b3d7cf2f902c1395b7caf17ab3142930a
SHA256

cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f
SHA512

2dd3ae2523afd2c29c78bb07bd4bb536dc914c8ab3175c52a41771584327232819280cf32912f47c8036fa3f8234f5715cf45898b9e7d0b04fe2744de4d97991
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fB:boSeGUA5YZazpXUmZhZ65

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

Processes:

cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exe

Executes dropped EXE 2 IoCs

Processes:

a1punf5t2of.exea1punf5t2of.exe

pid process

2444 a1punf5t2of.exe
1448 a1punf5t2of.exe

pid	process
2444	a1punf5t2of.exe
1448	a1punf5t2of.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

a1punf5t2of.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a1punf5t2of.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

a1punf5t2of.exe

description pid process target process

PID 2444 set thread context of 1448 2444 a1punf5t2of.exe a1punf5t2of.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a1punf5t2of.exe

description	pid	process	target process
PID 2444 set thread context of 1448	2444	a1punf5t2of.exe	a1punf5t2of.exe

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

Processes:

cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exea1punf5t2of.exea1punf5t2of.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.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

Processes:

a1punf5t2of.exe

pid process

1448 a1punf5t2of.exe
1448 a1punf5t2of.exe
1448 a1punf5t2of.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

a1punf5t2of.exe

pid process

1448 a1punf5t2of.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a1punf5t2of.exe

description pid process

Token: SeDebugPrivilege 1448 a1punf5t2of.exe

pid	process
1448	a1punf5t2of.exe
1448	a1punf5t2of.exe
1448	a1punf5t2of.exe

pid	process
1448	a1punf5t2of.exe

description	pid	process
Token: SeDebugPrivilege	1448	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exea1punf5t2of.exe

description	pid	process	target process
PID 1960 wrote to memory of 2444	1960	cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exe	a1punf5t2of.exe
PID 1960 wrote to memory of 2444	1960	cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exe	a1punf5t2of.exe
PID 1960 wrote to memory of 2444	1960	cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exe	a1punf5t2of.exe
PID 2444 wrote to memory of 1448	2444	a1punf5t2of.exe	a1punf5t2of.exe
PID 2444 wrote to memory of 1448	2444	a1punf5t2of.exe	a1punf5t2of.exe
PID 2444 wrote to memory of 1448	2444	a1punf5t2of.exe	a1punf5t2of.exe
PID 2444 wrote to memory of 1448	2444	a1punf5t2of.exe	a1punf5t2of.exe
PID 2444 wrote to memory of 1448	2444	a1punf5t2of.exe	a1punf5t2of.exe
PID 2444 wrote to memory of 1448	2444	a1punf5t2of.exe	a1punf5t2of.exe
PID 2444 wrote to memory of 1448	2444	a1punf5t2of.exe	a1punf5t2of.exe
PID 2444 wrote to memory of 1448	2444	a1punf5t2of.exe	a1punf5t2of.exe

C:\Users\Admin\AppData\Local\Temp\cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exe
"C:\Users\Admin\AppData\Local\Temp\cd39d2bdf25946a72825af090e29f68643a77b5368bf67ebd7eb333edc40512f.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1960
- 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:2444
- - 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:1448

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
278KB

MD5
f67f93064a37781e66f625e6420785af

SHA1
935f3f615284d1b8e7ef5135a4399861b7c5699d

SHA256
837c02d5ea196df8d9ae85f20d8cdc2f1badfa0aa3fef9bbf2292143d79dc6b7

SHA512
1de461f7c42106de40837f37396b206aaf12559813502d7d6eaea48f794409ea4c7d728d9e7ce1f2c45dbfea5b969a3f5036a36db88d0f8deb483e89ca3b8a4c

Download Submit
memory/1448-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1448-40-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1448-37-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1448-36-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1448-33-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1448-34-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1448-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1448-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1960-6-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1960-0-0x0000000075642000-0x0000000075643000-memory.dmp

Filesize
4KB

Download
memory/1960-1-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1960-2-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1960-22-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1960-3-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1960-4-0x0000000075642000-0x0000000075643000-memory.dmp

Filesize
4KB

Download
memory/1960-5-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1960-7-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-25-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-21-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-27-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-26-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-24-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-39-0x0000000075640000-0x0000000075BF1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-23-0x0000000075640000-0x0000000075BF1000-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