nanocore | bffc649f9caaeb25d0ee5c19cebc71a5b2494271255a1e143bc0849494ae9cd2

Analysis

max time kernel
144s
max time network
131s
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 13:18

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General

Target

kitty.exe
Size

671KB
MD5

fa361fd31808cd531b1c534715fa2612
SHA1

f16c315dba445b58a71bbaa2fa879b05cadb502d
SHA256

bffc649f9caaeb25d0ee5c19cebc71a5b2494271255a1e143bc0849494ae9cd2
SHA512

3fdef184f3bacfd405c5e32ab7e8295cbc687124dd9541d8d2c8c5fbfd74412c2f709cd5ab8972fbb39ac6e2158af1984ee374aef5a42165e5e9b254e54961d1
SSDEEP

12288:HLV6Btpmk7SwAJ8VAMj6if5DwfzcEu54gIdlsI14/uMhrj6zTP3yF2Bdl:rApf7Swy8V6A5DwfzcEu54Vn1S3VsL3R

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:

kitty.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" kitty.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

kitty.exe

description ioc process

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

Processes:

kitty.exe

description ioc process

File created C:\Program Files (x86)\DHCP Service\dhcpsv.exe kitty.exe
File opened for modification C:\Program Files (x86)\DHCP Service\dhcpsv.exe kitty.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

4608 schtasks.exe
3304 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

kitty.exe

pid process

3424 kitty.exe
3424 kitty.exe
3424 kitty.exe
3424 kitty.exe
3424 kitty.exe
3424 kitty.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

kitty.exe

pid process

3424 kitty.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

kitty.exe

description pid process

Token: SeDebugPrivilege 3424 kitty.exe
Token: SeDebugPrivilege 3424 kitty.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"	kitty.exe

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

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

pid	process
4608	schtasks.exe
3304	schtasks.exe

pid	process
3424	kitty.exe
3424	kitty.exe
3424	kitty.exe
3424	kitty.exe
3424	kitty.exe
3424	kitty.exe

pid	process
3424	kitty.exe

description	pid	process
Token: SeDebugPrivilege	3424	kitty.exe
Token: SeDebugPrivilege	3424	kitty.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

kitty.exe

description	pid	process	target process
PID 3424 wrote to memory of 4608	3424	kitty.exe	schtasks.exe
PID 3424 wrote to memory of 4608	3424	kitty.exe	schtasks.exe
PID 3424 wrote to memory of 4608	3424	kitty.exe	schtasks.exe
PID 3424 wrote to memory of 3304	3424	kitty.exe	schtasks.exe
PID 3424 wrote to memory of 3304	3424	kitty.exe	schtasks.exe
PID 3424 wrote to memory of 3304	3424	kitty.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\kitty.exe
"C:\Users\Admin\AppData\Local\Temp\kitty.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:3424

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "DHCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4556.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:4608

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "DHCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp45A5.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:3304

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4556.tmp
Filesize
1KB

MD5
1fb868da8972c98303d5b8a1640a3052

SHA1
dff1a9e1f187ed867895078523b569fbbac825c3

SHA256
8e74325e8c8f5432a80a71efc90ba52ad493c65a9ea258c46b5a0e8ba9e113aa

SHA512
b9a3a07f2404c119cc1e392ba9605d269e6f9b9d20ec202abeefe302ef2ef70c74ed0c04a5ba10a750ab84cbde4d35aafbe8cfb448abd089d3573e624539fc4e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp45A5.tmp
Filesize
1KB

MD5
a77c223a0fc492dccd6fb9975f7a8766

SHA1
5e813636ae9b8138d78919348a5da3a6e8bd74b5

SHA256
589df7325d42409c50827600fedb240171ee4bdab85916474a37800c2382829e

SHA512
315cea8fde3c594404f5d3c96c710af1214cff6d08ccdb40634a739e108ff810e02624735a2b8c3e3720157b4a55327f317c3c23c3a681b46b9ab0f19060f7c0

Download Submit
memory/3424-0-0x0000000074C12000-0x0000000074C13000-memory.dmp

Filesize
4KB

Download
memory/3424-1-0x0000000074C10000-0x00000000751C1000-memory.dmp

Filesize
5.7MB

Download
memory/3424-2-0x0000000074C10000-0x00000000751C1000-memory.dmp

Filesize
5.7MB

Download
memory/3424-10-0x0000000074C10000-0x00000000751C1000-memory.dmp

Filesize
5.7MB

Download
memory/3424-11-0x0000000074C12000-0x0000000074C13000-memory.dmp

Filesize
4KB

Download
memory/3424-12-0x0000000074C10000-0x00000000751C1000-memory.dmp

Filesize
5.7MB

Download
memory/3424-13-0x0000000074C10000-0x00000000751C1000-memory.dmp

Filesize
5.7MB

Download