nanocore | 38bafb3ee04c69f78a7ee8252e9ab01fdc76eeb11b6b37c527dba1ef8de1f75b

General

Target

1f68852529fa2635a5d24604892fb460N.exe
Size

279KB
MD5

1f68852529fa2635a5d24604892fb460
SHA1

ff7f438089ec2181c2659353dac8616251c17e99
SHA256

38bafb3ee04c69f78a7ee8252e9ab01fdc76eeb11b6b37c527dba1ef8de1f75b
SHA512

222c98f661a11770f191d3364058a3868c5bc2bbd36c6494c1dd0d747906fe2a549fd35a8e2eb65ca28cfe0eda9313b44979da070b4bda6b0788e7a150825565
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKn:boSeGUA5YZazpXUmZhZ6Sn

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:

1f68852529fa2635a5d24604892fb460N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation	1f68852529fa2635a5d24604892fb460N.exe

Executes dropped EXE 2 IoCs

Processes:

a1punf5t2of.exea1punf5t2of.exe

pid process

456 a1punf5t2of.exe
4780 a1punf5t2of.exe

pid	process
456	a1punf5t2of.exe
4780	a1punf5t2of.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

1f68852529fa2635a5d24604892fb460N.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	1f68852529fa2635a5d24604892fb460N.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 456 set thread context of 4780 456 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

4780 a1punf5t2of.exe
4780 a1punf5t2of.exe
4780 a1punf5t2of.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

a1punf5t2of.exe

pid process

4780 a1punf5t2of.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a1punf5t2of.exe

description pid process

Token: SeDebugPrivilege 4780 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 456 set thread context of 4780	456	a1punf5t2of.exe	a1punf5t2of.exe

pid	process
4780	a1punf5t2of.exe
4780	a1punf5t2of.exe
4780	a1punf5t2of.exe

pid	process
4780	a1punf5t2of.exe

description	pid	process
Token: SeDebugPrivilege	4780	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

1f68852529fa2635a5d24604892fb460N.exea1punf5t2of.exe

description	pid	process	target process
PID 4000 wrote to memory of 456	4000	1f68852529fa2635a5d24604892fb460N.exe	a1punf5t2of.exe
PID 4000 wrote to memory of 456	4000	1f68852529fa2635a5d24604892fb460N.exe	a1punf5t2of.exe
PID 4000 wrote to memory of 456	4000	1f68852529fa2635a5d24604892fb460N.exe	a1punf5t2of.exe
PID 456 wrote to memory of 4780	456	a1punf5t2of.exe	a1punf5t2of.exe
PID 456 wrote to memory of 4780	456	a1punf5t2of.exe	a1punf5t2of.exe
PID 456 wrote to memory of 4780	456	a1punf5t2of.exe	a1punf5t2of.exe
PID 456 wrote to memory of 4780	456	a1punf5t2of.exe	a1punf5t2of.exe
PID 456 wrote to memory of 4780	456	a1punf5t2of.exe	a1punf5t2of.exe
PID 456 wrote to memory of 4780	456	a1punf5t2of.exe	a1punf5t2of.exe
PID 456 wrote to memory of 4780	456	a1punf5t2of.exe	a1punf5t2of.exe
PID 456 wrote to memory of 4780	456	a1punf5t2of.exe	a1punf5t2of.exe

C:\Users\Admin\AppData\Local\Temp\1f68852529fa2635a5d24604892fb460N.exe
"C:\Users\Admin\AppData\Local\Temp\1f68852529fa2635a5d24604892fb460N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4000

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:456

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:4780

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
0d3b1a2d1fd7d643be7aad2f13c4595c

SHA1
a2ebc1b0f5a1b569e825db5e4323c1f19d4af54b

SHA256
732600ccbe59d80bfb1b204f9f8191ce64d3a606cbeff26ca326ea77b60819dd

SHA512
16c325a5f5cfc52ae7e88ea493d4f8d288de20b2a8ff2390d7d3ee65e8a318eefd91c8ec45d5a3b7d2600d0b39c20f58fbdcdf692292b8c910cd11e97c84fc4d

Download Submit
memory/456-30-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/456-17-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/456-18-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/456-19-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/456-32-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4000-1-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4000-2-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4000-16-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4000-0-0x0000000075362000-0x0000000075363000-memory.dmp

Filesize
4KB

Download
memory/4780-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4780-25-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4780-26-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4780-27-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4780-29-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4780-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4780-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4780-33-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4780-34-0x0000000075360000-0x0000000075911000-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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