nanocore | 1be5176e2bdc3b3434e8dc95c902e0cfaaaf7a23fc8203b413effc121011ad30

Analysis

max time kernel
118s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
23-06-2024 13:23

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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\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.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)\TCP Subsystem\tcpss.exe sd.exe
File opened for modification C:\Program Files (x86)\TCP Subsystem\tcpss.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

2512 schtasks.exe
2628 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

sd.exe

pid process

2924 sd.exe
2924 sd.exe
2924 sd.exe
2924 sd.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

sd.exe

pid process

2924 sd.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

sd.exe

description pid process

Token: SeDebugPrivilege 2924 sd.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.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)\TCP Subsystem\tcpss.exe	sd.exe
File opened for modification	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	sd.exe

pid	process
2512	schtasks.exe
2628	schtasks.exe

pid	process
2924	sd.exe
2924	sd.exe
2924	sd.exe
2924	sd.exe

pid	process
2924	sd.exe

description	pid	process
Token: SeDebugPrivilege	2924	sd.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

sd.exe

description	pid	process	target process
PID 2924 wrote to memory of 2512	2924	sd.exe	schtasks.exe
PID 2924 wrote to memory of 2512	2924	sd.exe	schtasks.exe
PID 2924 wrote to memory of 2512	2924	sd.exe	schtasks.exe
PID 2924 wrote to memory of 2512	2924	sd.exe	schtasks.exe
PID 2924 wrote to memory of 2628	2924	sd.exe	schtasks.exe
PID 2924 wrote to memory of 2628	2924	sd.exe	schtasks.exe
PID 2924 wrote to memory of 2628	2924	sd.exe	schtasks.exe
PID 2924 wrote to memory of 2628	2924	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:2924

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp83B.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2512

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8C8.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2628

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp83B.tmp
Filesize
1KB

MD5
f7d890eac080bcc878916c23c4b34c3d

SHA1
efa80352399bfd5c91b958dbc45228560e3a2b7e

SHA256
a7c1ea9b3651907399af17cb4bbaa5696b6a4f0bdcb04640842fa7af3bf0a670

SHA512
a03dfd061d8fe7d01333fbdc641a92d9daa56dd21758ce788ea3a5114de16fcc37acd5f7bb0aaad5b23dc74c50ce51ab80603f429bd61292d81497ce68287085

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8C8.tmp
Filesize
1KB

MD5
4b7ef560289c0f62d0baf6f14f48a57a

SHA1
8331acb90dde588aa3196919f6e847f398fd06d1

SHA256
062844155306130d6fafc4fe10ac9e5ddd2ed462532b729c50cdc979c0d83207

SHA512
ecaa27c4b703d95f9f9b37d8c339982970482e7dab968c2010e0aa644bbfa31973111aafb827565af30c423d1d14e4ff997ec149614e713ff7ef3456894d02d8

Download Submit
memory/2924-0-0x0000000074BE1000-0x0000000074BE2000-memory.dmp

Filesize
4KB

Download
memory/2924-1-0x0000000074BE0000-0x000000007518B000-memory.dmp

Filesize
5.7MB

Download
memory/2924-2-0x0000000074BE0000-0x000000007518B000-memory.dmp

Filesize
5.7MB

Download
memory/2924-13-0x0000000074BE0000-0x000000007518B000-memory.dmp

Filesize
5.7MB

Download