nanocore | 66114bf058aee740aee64fa5a7e81c98fd219b0953a7e1813ff14264ef565940

General

Target

YASEEN CV REF.2020 06 16.exe
Size

341KB
MD5

506ae668ac52b8ea017fb9167582a690
SHA1

5aa054596fc9b66a68136d5a3e243f4f4605d6af
SHA256

d49621996ba7b43c8d7cb35403ccbb13c50f1a1dddc9492ce7a74abd8597a115
SHA512

dde5fb4cc8bbf7dcd667989e18ed380eb9cdf5ed182db06d0ea5d76d21d0300ad9676b46253bcd277eac94aa58bfd8e09c9b79fe64267d257ef9060d4d1bcada

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

INDOMIE.LINKPC.NET:1818

185.140.53.9:1818

Mutex

c2760388-119a-4b64-9007-01bc88004481

Attributes

activate_away_mode
true
backup_connection_host
185.140.53.9
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-19T16:48:01.198372836Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1818
default_group
INDOMIE
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
c2760388-119a-4b64-9007-01bc88004481
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
INDOMIE.LINKPC.NET
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

YASEEN CV REF.2020 06 16.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ARP Service = "C:\\Program Files (x86)\\ARP Service\\arpsvc.exe"	YASEEN CV REF.2020 06 16.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

YASEEN CV REF.2020 06 16.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	YASEEN CV REF.2020 06 16.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

YASEEN CV REF.2020 06 16.exe

description pid process target process

PID 2020 set thread context of 1572 2020 YASEEN CV REF.2020 06 16.exe YASEEN CV REF.2020 06 16.exe

description	pid	process	target process
PID 2020 set thread context of 1572	2020	YASEEN CV REF.2020 06 16.exe	YASEEN CV REF.2020 06 16.exe

Drops file in Program Files directory 2 IoCs

Processes:

YASEEN CV REF.2020 06 16.exe

description	ioc	process
File created	C:\Program Files (x86)\ARP Service\arpsvc.exe	YASEEN CV REF.2020 06 16.exe
File opened for modification	C:\Program Files (x86)\ARP Service\arpsvc.exe	YASEEN CV REF.2020 06 16.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

900 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

YASEEN CV REF.2020 06 16.exe

pid process

1572 YASEEN CV REF.2020 06 16.exe
1572 YASEEN CV REF.2020 06 16.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

YASEEN CV REF.2020 06 16.exe

pid process

1572 YASEEN CV REF.2020 06 16.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

YASEEN CV REF.2020 06 16.exe

description pid process

Token: SeDebugPrivilege 1572 YASEEN CV REF.2020 06 16.exe

pid	process
900	schtasks.exe

pid	process
1572	YASEEN CV REF.2020 06 16.exe
1572	YASEEN CV REF.2020 06 16.exe

pid	process
1572	YASEEN CV REF.2020 06 16.exe

description	pid	process
Token: SeDebugPrivilege	1572	YASEEN CV REF.2020 06 16.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

YASEEN CV REF.2020 06 16.exe

description	pid	process	target process
PID 2020 wrote to memory of 900	2020	YASEEN CV REF.2020 06 16.exe	schtasks.exe
PID 2020 wrote to memory of 900	2020	YASEEN CV REF.2020 06 16.exe	schtasks.exe
PID 2020 wrote to memory of 900	2020	YASEEN CV REF.2020 06 16.exe	schtasks.exe
PID 2020 wrote to memory of 900	2020	YASEEN CV REF.2020 06 16.exe	schtasks.exe
PID 2020 wrote to memory of 1572	2020	YASEEN CV REF.2020 06 16.exe	YASEEN CV REF.2020 06 16.exe
PID 2020 wrote to memory of 1572	2020	YASEEN CV REF.2020 06 16.exe	YASEEN CV REF.2020 06 16.exe
PID 2020 wrote to memory of 1572	2020	YASEEN CV REF.2020 06 16.exe	YASEEN CV REF.2020 06 16.exe
PID 2020 wrote to memory of 1572	2020	YASEEN CV REF.2020 06 16.exe	YASEEN CV REF.2020 06 16.exe
PID 2020 wrote to memory of 1572	2020	YASEEN CV REF.2020 06 16.exe	YASEEN CV REF.2020 06 16.exe
PID 2020 wrote to memory of 1572	2020	YASEEN CV REF.2020 06 16.exe	YASEEN CV REF.2020 06 16.exe
PID 2020 wrote to memory of 1572	2020	YASEEN CV REF.2020 06 16.exe	YASEEN CV REF.2020 06 16.exe
PID 2020 wrote to memory of 1572	2020	YASEEN CV REF.2020 06 16.exe	YASEEN CV REF.2020 06 16.exe
PID 2020 wrote to memory of 1572	2020	YASEEN CV REF.2020 06 16.exe	YASEEN CV REF.2020 06 16.exe

C:\Users\Admin\AppData\Local\Temp\YASEEN CV REF.2020 06 16.exe
"C:\Users\Admin\AppData\Local\Temp\YASEEN CV REF.2020 06 16.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2020

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OywQzhQjZxD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7CA0.tmp"
2⤵
- Creates scheduled task(s)
PID:900

C:\Users\Admin\AppData\Local\Temp\YASEEN CV REF.2020 06 16.exe
"{path}"
2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1572

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7CA0.tmp
Filesize
1KB

MD5
31b419bbd93ee25708cfeff36383e71d

SHA1
c2e64ae2cf26c44b9b665050f35bb5036335a1e9

SHA256
8d3d9a1361cc9ffebbd67661c3e9b0553996304f397c9cc1bf8fe9c8dd740c2d

SHA512
38b61b1c962a91ce5d26c5da4adb02a67fe2b83b781a331d5cce75267f478654632171006dd4bbc4f9f632f3e477e729313ce50f5f90e910c42bdda5f702f636

Download Submit
memory/900-56-0x0000000000000000-mapping.dmp

Download
memory/1572-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1572-58-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1572-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1572-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1572-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1572-65-0x000000000041E792-mapping.dmp

Download
memory/1572-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1572-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1572-71-0x0000000074800000-0x0000000074DAB000-memory.dmp

Filesize
5.7MB

Download
memory/2020-55-0x0000000074800000-0x0000000074DAB000-memory.dmp

Filesize
5.7MB

Download
memory/2020-54-0x00000000755C1000-0x00000000755C3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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