nanocore | 1be5176e2bdc3b3434e8dc95c902e0cfaaaf7a23fc8203b413effc121011ad30

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-06-2024 13:06

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General

Target

sd.exe
Size

203KB
MD5

cb57bb7b429df360f87e1e83566ff9a7
SHA1

8d03c9d0b486d0fcd2e271e0902039cdb0480705
SHA256

1be5176e2bdc3b3434e8dc95c902e0cfaaaf7a23fc8203b413effc121011ad30
SHA512

1859e20474b69aa658f723c08c6543505ebe1843d1b6eee401fb7688821485397e5d20b7589be81d4f0ad7071120be6b9595bfe82e096c85126dc282472f47b8
SSDEEP

6144:sLV6Bta6dtJmakIM5O/Uj1i3VmcHhyT9O+PjmdR/Fyr:sLV6BtpmkV/UJilzHhUO+yd6

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

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
T1547.001

Modify Registry
T1112

Processes:

sd.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Service = "C:\\Program Files (x86)\\DHCP Service\\dhcpsv.exe" sd.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

sd.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA sd.exe
Drops file in Program Files directory 2 IoCs

Processes:

sd.exe

description ioc process

File created C:\Program Files (x86)\DHCP Service\dhcpsv.exe sd.exe
File opened for modification C:\Program Files (x86)\DHCP Service\dhcpsv.exe sd.exe
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exeschtasks.exe

pid process

4480 schtasks.exe
4564 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

sd.exe

pid process

1856 sd.exe
1856 sd.exe
1856 sd.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

sd.exe

pid process

1856 sd.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

sd.exe

description pid process

Token: SeDebugPrivilege 1856 sd.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Service = "C:\\Program Files (x86)\\DHCP Service\\dhcpsv.exe"	sd.exe

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

description	ioc	process
File created	C:\Program Files (x86)\DHCP Service\dhcpsv.exe	sd.exe
File opened for modification	C:\Program Files (x86)\DHCP Service\dhcpsv.exe	sd.exe

pid	process
4480	schtasks.exe
4564	schtasks.exe

pid	process
1856	sd.exe
1856	sd.exe
1856	sd.exe

pid	process
1856	sd.exe

description	pid	process
Token: SeDebugPrivilege	1856	sd.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

sd.exe

description	pid	process	target process
PID 1856 wrote to memory of 4480	1856	sd.exe	schtasks.exe
PID 1856 wrote to memory of 4480	1856	sd.exe	schtasks.exe
PID 1856 wrote to memory of 4480	1856	sd.exe	schtasks.exe
PID 1856 wrote to memory of 4564	1856	sd.exe	schtasks.exe
PID 1856 wrote to memory of 4564	1856	sd.exe	schtasks.exe
PID 1856 wrote to memory of 4564	1856	sd.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\sd.exe
"C:\Users\Admin\AppData\Local\Temp\sd.exe"
1⤵
- 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
- Suspicious use of WriteProcessMemory
PID:1856

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "DHCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp513D.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:4480

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "DHCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp519B.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:4564

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp513D.tmp
Filesize
1KB

MD5
f7d890eac080bcc878916c23c4b34c3d

SHA1
efa80352399bfd5c91b958dbc45228560e3a2b7e

SHA256
a7c1ea9b3651907399af17cb4bbaa5696b6a4f0bdcb04640842fa7af3bf0a670

SHA512
a03dfd061d8fe7d01333fbdc641a92d9daa56dd21758ce788ea3a5114de16fcc37acd5f7bb0aaad5b23dc74c50ce51ab80603f429bd61292d81497ce68287085

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp519B.tmp
Filesize
1KB

MD5
a77c223a0fc492dccd6fb9975f7a8766

SHA1
5e813636ae9b8138d78919348a5da3a6e8bd74b5

SHA256
589df7325d42409c50827600fedb240171ee4bdab85916474a37800c2382829e

SHA512
315cea8fde3c594404f5d3c96c710af1214cff6d08ccdb40634a739e108ff810e02624735a2b8c3e3720157b4a55327f317c3c23c3a681b46b9ab0f19060f7c0

Download Submit
memory/1856-0-0x0000000075312000-0x0000000075313000-memory.dmp

Filesize
4KB

Download
memory/1856-1-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/1856-2-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/1856-10-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/1856-11-0x0000000075312000-0x0000000075313000-memory.dmp

Filesize
4KB

Download
memory/1856-12-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/1856-13-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download