nanocore | 2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7

General

Target

2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.exe
Size

278KB
MD5

895c7f902ad22572547471476f2d4752
SHA1

25c06ae39f12241936491492966c083bb0a5548e
SHA256

2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7
SHA512

1361113e4f6248957240fb35df837c3b904dfaf9fda9c7afca10f1783319054f67285a7769c03a46bcf25f4d2a6f5940457b3c54a073f8386f820b86aa99923e
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKY:boSeGUA5YZazpXUmZhZ6SY

Score

10^/10

nanocore 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

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:

2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.exe

Executes dropped EXE 2 IoCs

Processes:

a1punf5t2of.exea1punf5t2of.exe

pid process

452 a1punf5t2of.exe
1648 a1punf5t2of.exe

pid	process
452	a1punf5t2of.exe
1648	a1punf5t2of.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.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 452 set thread context of 1648 452 a1punf5t2of.exe a1punf5t2of.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

a1punf5t2of.exe

pid process

1648 a1punf5t2of.exe
1648 a1punf5t2of.exe
1648 a1punf5t2of.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

a1punf5t2of.exe

pid process

1648 a1punf5t2of.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a1punf5t2of.exe

description pid process

Token: SeDebugPrivilege 1648 a1punf5t2of.exe

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

description	pid	process	target process
PID 452 set thread context of 1648	452	a1punf5t2of.exe	a1punf5t2of.exe

pid	process
1648	a1punf5t2of.exe
1648	a1punf5t2of.exe
1648	a1punf5t2of.exe

pid	process
1648	a1punf5t2of.exe

description	pid	process
Token: SeDebugPrivilege	1648	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.exea1punf5t2of.exe

description	pid	process	target process
PID 1116 wrote to memory of 452	1116	2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.exe	a1punf5t2of.exe
PID 1116 wrote to memory of 452	1116	2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.exe	a1punf5t2of.exe
PID 1116 wrote to memory of 452	1116	2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.exe	a1punf5t2of.exe
PID 452 wrote to memory of 1648	452	a1punf5t2of.exe	a1punf5t2of.exe
PID 452 wrote to memory of 1648	452	a1punf5t2of.exe	a1punf5t2of.exe
PID 452 wrote to memory of 1648	452	a1punf5t2of.exe	a1punf5t2of.exe
PID 452 wrote to memory of 1648	452	a1punf5t2of.exe	a1punf5t2of.exe
PID 452 wrote to memory of 1648	452	a1punf5t2of.exe	a1punf5t2of.exe
PID 452 wrote to memory of 1648	452	a1punf5t2of.exe	a1punf5t2of.exe
PID 452 wrote to memory of 1648	452	a1punf5t2of.exe	a1punf5t2of.exe
PID 452 wrote to memory of 1648	452	a1punf5t2of.exe	a1punf5t2of.exe

C:\Users\Admin\AppData\Local\Temp\2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.exe
"C:\Users\Admin\AppData\Local\Temp\2f777e82b65e659254dfd9995d1009dea0d5fa999fa73121b9490fdc3c7505d7.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1116

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:452

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
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1648

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
Filesize
279KB

MD5
30d0c2b8fc7b63de0818e1ebf7aace31

SHA1
d204d427f2ce08bc61fad989e7edfc8d3bdda70c

SHA256
9974ac9f10f8acdec3571f99b4d77451a7659af44a26f22cd1fcf2393328c6a1

SHA512
96f834b418d69add29d97ea3696767825dcc4653009976dcf1096dc07dd4fef7046f42f09f7ae7442eeb6b05c056c5da30f152d7f63b46950fe42a6c0a9edd2b

Download Submit
memory/452-31-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/452-17-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/452-19-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/452-20-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/452-33-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-1-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-2-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-3-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-18-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/1116-0-0x0000000075132000-0x0000000075133000-memory.dmp

Filesize
4KB

Download
memory/1648-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1648-26-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/1648-27-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/1648-28-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/1648-30-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/1648-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1648-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1648-34-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/1648-35-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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