nanocore | f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333

General

Target

f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe
Size

220KB
MD5

31a3abe2824e6e4cce48e207df6b3aa5
SHA1

cd1466b5c1e964c53ade0acdcd3ad6ecf2fc8505
SHA256

f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333
SHA512

c93a1310ebcfe3472e68a4db45d1dabfabaa18711997286d9f2986bae1d63d66f3e09a397c6bde3c12d11e4669b6e9a699fa6ad09a657d603c1749e45971e7e2
SSDEEP

3072:xKNQHcGBMVpXUxRVE+FXeRiD1zuO9T1eRp7VFtJW6uVRK0q/3/v:xK5+MVpWRVyR6uI1eP7VFtJkwv

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
Executes dropped EXE 1 IoCs

Processes:

csrss.exe

pid process

1088 csrss.exe
Loads dropped DLL 1 IoCs

Processes:

winlogon.exe

pid process

1052 winlogon.exe

pid	process
1088	csrss.exe

pid	process
1052	winlogon.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

winlogon.exewinlogon.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\Winlogon = "C:\\Users\\Admin\\AppData\\Roaming\\SubFolder\\SubFolder\\winlogon.exe"	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Winlogon = "C:\\Users\\Admin\\AppData\\Roaming\\SubFolder\\SubFolder\\winlogon.exe"	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\PCI Subsystem = "C:\\Program Files (x86)\\PCI Subsystem\\pciss.exe"	winlogon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\Winlogon = "C:\\Users\\Admin\\AppData\\Roaming\\SubFolder\\SubFolder\\winlogon.exe"	csrss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Winlogon = "C:\\Users\\Admin\\AppData\\Roaming\\SubFolder\\SubFolder\\winlogon.exe"	csrss.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

winlogon.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA winlogon.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

winlogon.exe

description pid process target process

PID 1052 set thread context of 1700 1052 winlogon.exe winlogon.exe

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

description	pid	process	target process
PID 1052 set thread context of 1700	1052	winlogon.exe	winlogon.exe

Drops file in Program Files directory 2 IoCs

Processes:

winlogon.exe

description	ioc	process
File created	C:\Program Files (x86)\PCI Subsystem\pciss.exe	winlogon.exe
File opened for modification	C:\Program Files (x86)\PCI Subsystem\pciss.exe	winlogon.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 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1596 schtasks.exe
2012 schtasks.exe

pid	process
1596	schtasks.exe
2012	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exewinlogon.execsrss.exe

pid	process
1792	f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe
1792	f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe
1052	winlogon.exe
1052	winlogon.exe
1052	winlogon.exe
1052	winlogon.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe
1088	csrss.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

winlogon.exe

pid process

1700 winlogon.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe

pid process

1792 f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe

pid	process
1700	winlogon.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exewinlogon.execsrss.exewinlogon.exe

description	pid	process
Token: SeDebugPrivilege	1792	f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe
Token: SeDebugPrivilege	1052	winlogon.exe
Token: SeDebugPrivilege	1052	winlogon.exe
Token: SeDebugPrivilege	1088	csrss.exe
Token: SeDebugPrivilege	1088	csrss.exe
Token: SeDebugPrivilege	1700	winlogon.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exewinlogon.exewinlogon.exe

description	pid	process	target process
PID 1792 wrote to memory of 1052	1792	f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe	winlogon.exe
PID 1792 wrote to memory of 1052	1792	f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe	winlogon.exe
PID 1792 wrote to memory of 1052	1792	f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe	winlogon.exe
PID 1792 wrote to memory of 1052	1792	f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe	winlogon.exe
PID 1052 wrote to memory of 1700	1052	winlogon.exe	winlogon.exe
PID 1052 wrote to memory of 1700	1052	winlogon.exe	winlogon.exe
PID 1052 wrote to memory of 1700	1052	winlogon.exe	winlogon.exe
PID 1052 wrote to memory of 1700	1052	winlogon.exe	winlogon.exe
PID 1052 wrote to memory of 1700	1052	winlogon.exe	winlogon.exe
PID 1052 wrote to memory of 1700	1052	winlogon.exe	winlogon.exe
PID 1052 wrote to memory of 1700	1052	winlogon.exe	winlogon.exe
PID 1052 wrote to memory of 1700	1052	winlogon.exe	winlogon.exe
PID 1052 wrote to memory of 1700	1052	winlogon.exe	winlogon.exe
PID 1700 wrote to memory of 1596	1700	winlogon.exe	schtasks.exe
PID 1700 wrote to memory of 1596	1700	winlogon.exe	schtasks.exe
PID 1700 wrote to memory of 1596	1700	winlogon.exe	schtasks.exe
PID 1700 wrote to memory of 1596	1700	winlogon.exe	schtasks.exe
PID 1052 wrote to memory of 1088	1052	winlogon.exe	csrss.exe
PID 1052 wrote to memory of 1088	1052	winlogon.exe	csrss.exe
PID 1052 wrote to memory of 1088	1052	winlogon.exe	csrss.exe
PID 1052 wrote to memory of 1088	1052	winlogon.exe	csrss.exe
PID 1700 wrote to memory of 2012	1700	winlogon.exe	schtasks.exe
PID 1700 wrote to memory of 2012	1700	winlogon.exe	schtasks.exe
PID 1700 wrote to memory of 2012	1700	winlogon.exe	schtasks.exe
PID 1700 wrote to memory of 2012	1700	winlogon.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe
"C:\Users\Admin\AppData\Local\Temp\f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1792

C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
"C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe"
2⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1052

C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
"C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe"
3⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "PCI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC063.tmp"
4⤵
- Creates scheduled task(s)
PID:1596

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "PCI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF2C9.tmp"
4⤵
- Creates scheduled task(s)
PID:2012

C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe
"C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe" -keyhide -prochide 1700 -reg C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe -proc 1700 C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1088

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC063.tmp

Filesize
1KB

MD5
28258c5ed38ce92a70b8279890118dad

SHA1
975e9d2851e0fac8a150822ac12766e7498393e8

SHA256
5e4399d3686f5b17651cd096bdab270c2d4f33f87aa39e750e00d2431fd03c4a

SHA512
d13d9d836ee68f59aaea24a7500fcef7078b74837f9188b18ebd06df0e83d22f5595bd53562a637a38daa526f6bc0884d9aa9d5348f0134a1ac21ec702031414

Download Submit
C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe

Filesize
220KB

MD5
31a3abe2824e6e4cce48e207df6b3aa5

SHA1
cd1466b5c1e964c53ade0acdcd3ad6ecf2fc8505

SHA256
f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333

SHA512
c93a1310ebcfe3472e68a4db45d1dabfabaa18711997286d9f2986bae1d63d66f3e09a397c6bde3c12d11e4669b6e9a699fa6ad09a657d603c1749e45971e7e2

Download Submit
C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe

Filesize
220KB

MD5
31a3abe2824e6e4cce48e207df6b3aa5

SHA1
cd1466b5c1e964c53ade0acdcd3ad6ecf2fc8505

SHA256
f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333

SHA512
c93a1310ebcfe3472e68a4db45d1dabfabaa18711997286d9f2986bae1d63d66f3e09a397c6bde3c12d11e4669b6e9a699fa6ad09a657d603c1749e45971e7e2

Download Submit
\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe

Filesize
220KB

MD5
31a3abe2824e6e4cce48e207df6b3aa5

SHA1
cd1466b5c1e964c53ade0acdcd3ad6ecf2fc8505

SHA256
f1fdc6b05605137aabff3b59e49b489866673a93706d52247a74f1c6441ed333

SHA512
c93a1310ebcfe3472e68a4db45d1dabfabaa18711997286d9f2986bae1d63d66f3e09a397c6bde3c12d11e4669b6e9a699fa6ad09a657d603c1749e45971e7e2

Download Submit
memory/1052-57-0x0000000000000000-mapping.dmp

Download
memory/1052-60-0x00000000745D0000-0x0000000074B7B000-memory.dmp

Filesize
5.7MB

Download
memory/1052-61-0x0000000000CF6000-0x0000000000D07000-memory.dmp

Filesize
68KB

Download
memory/1052-84-0x00000000745D0000-0x0000000074B7B000-memory.dmp

Filesize
5.7MB

Download
memory/1052-85-0x0000000000CF6000-0x0000000000D07000-memory.dmp

Filesize
68KB

Download
memory/1088-88-0x00000000745D0000-0x0000000074B7B000-memory.dmp

Filesize
5.7MB

Download
memory/1088-80-0x0000000000000000-mapping.dmp

Download
memory/1088-91-0x00000000745D0000-0x0000000074B7B000-memory.dmp

Filesize
5.7MB

Download
memory/1596-79-0x0000000000000000-mapping.dmp

Download
memory/1700-62-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1700-63-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1700-74-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1700-72-0x000000000041C01E-mapping.dmp

Download
memory/1700-70-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1700-65-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1700-67-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1700-76-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1700-90-0x00000000745D0000-0x0000000074B7B000-memory.dmp

Filesize
5.7MB

Download
memory/1700-87-0x00000000745D0000-0x0000000074B7B000-memory.dmp

Filesize
5.7MB

Download
memory/1792-59-0x00000000745D0000-0x0000000074B7B000-memory.dmp

Filesize
5.7MB

Download
memory/1792-56-0x0000000000B46000-0x0000000000B57000-memory.dmp

Filesize
68KB

Download
memory/1792-54-0x00000000760A1000-0x00000000760A3000-memory.dmp

Filesize
8KB

Download
memory/1792-55-0x00000000745D0000-0x0000000074B7B000-memory.dmp

Filesize
5.7MB

Download
memory/2012-89-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads