nanocore | 586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645

Analysis

max time kernel
192s
max time network
203s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 15:55

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General

Target

586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645.exe
Size

184KB
MD5

d9ddc5f66b5f3f23eff074a07ad5d351
SHA1

1bb6e61d5adaaa339ece51f83da18ecef90fb5ec
SHA256

586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645
SHA512

b8246e467f3aaedd3132b5ccafff94210f8d44779d0225bc7c28297ba5962605d2f960936c112a27b3b890183257456e37dfa67c23249b8389934ffba79dac71
SSDEEP

3072:Hj/kZn6YQDLjfsXpE648bEbxwraBymHWFtZYVDw7xaxbcl2Hvl8cWHlV:HzkZn6NDLw5E648bEb6Fm29bEIl2Hd

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 3 IoCs

pid	Process
4496	winlogon.exe
3132	winlogon.exe
5108	csrss.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	winlogon.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\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

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4496 set thread context of 3132	4496	winlogon.exe	83

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	winlogon.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3132	winlogon.exe
3132	winlogon.exe
3132	winlogon.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe
5108	csrss.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3132	winlogon.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3132	winlogon.exe
Token: SeDebugPrivilege	5108	csrss.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1516 wrote to memory of 4496	1516	586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645.exe	82
PID 1516 wrote to memory of 4496	1516	586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645.exe	82
PID 1516 wrote to memory of 4496	1516	586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645.exe	82
PID 4496 wrote to memory of 3132	4496	winlogon.exe	83
PID 4496 wrote to memory of 3132	4496	winlogon.exe	83
PID 4496 wrote to memory of 3132	4496	winlogon.exe	83
PID 4496 wrote to memory of 3132	4496	winlogon.exe	83
PID 4496 wrote to memory of 3132	4496	winlogon.exe	83
PID 4496 wrote to memory of 3132	4496	winlogon.exe	83
PID 4496 wrote to memory of 3132	4496	winlogon.exe	83
PID 4496 wrote to memory of 3132	4496	winlogon.exe	83
PID 4496 wrote to memory of 5108	4496	winlogon.exe	84
PID 4496 wrote to memory of 5108	4496	winlogon.exe	84
PID 4496 wrote to memory of 5108	4496	winlogon.exe	84

C:\Users\Admin\AppData\Local\Temp\586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645.exe
"C:\Users\Admin\AppData\Local\Temp\586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
  "C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4496
- - C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
    "C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe"
    3⤵
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3132
- - C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe
    "C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe" -keyhide -prochide 3132
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5108

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
184KB

MD5
d9ddc5f66b5f3f23eff074a07ad5d351

SHA1
1bb6e61d5adaaa339ece51f83da18ecef90fb5ec

SHA256
586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645

SHA512
b8246e467f3aaedd3132b5ccafff94210f8d44779d0225bc7c28297ba5962605d2f960936c112a27b3b890183257456e37dfa67c23249b8389934ffba79dac71

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

Filesize
184KB

MD5
d9ddc5f66b5f3f23eff074a07ad5d351

SHA1
1bb6e61d5adaaa339ece51f83da18ecef90fb5ec

SHA256
586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645

SHA512
b8246e467f3aaedd3132b5ccafff94210f8d44779d0225bc7c28297ba5962605d2f960936c112a27b3b890183257456e37dfa67c23249b8389934ffba79dac71

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

Filesize
184KB

MD5
d9ddc5f66b5f3f23eff074a07ad5d351

SHA1
1bb6e61d5adaaa339ece51f83da18ecef90fb5ec

SHA256
586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645

SHA512
b8246e467f3aaedd3132b5ccafff94210f8d44779d0225bc7c28297ba5962605d2f960936c112a27b3b890183257456e37dfa67c23249b8389934ffba79dac71

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

Filesize
184KB

MD5
d9ddc5f66b5f3f23eff074a07ad5d351

SHA1
1bb6e61d5adaaa339ece51f83da18ecef90fb5ec

SHA256
586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645

SHA512
b8246e467f3aaedd3132b5ccafff94210f8d44779d0225bc7c28297ba5962605d2f960936c112a27b3b890183257456e37dfa67c23249b8389934ffba79dac71

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

Filesize
184KB

MD5
d9ddc5f66b5f3f23eff074a07ad5d351

SHA1
1bb6e61d5adaaa339ece51f83da18ecef90fb5ec

SHA256
586af6c00f34b531eac2f1d9e131859c8ae51d6f72203905b8f33f19ed195645

SHA512
b8246e467f3aaedd3132b5ccafff94210f8d44779d0225bc7c28297ba5962605d2f960936c112a27b3b890183257456e37dfa67c23249b8389934ffba79dac71

Download Submit
memory/1516-132-0x00000000745B0000-0x0000000074B61000-memory.dmp

Filesize
5.7MB

Download
memory/1516-133-0x00000000745B0000-0x0000000074B61000-memory.dmp

Filesize
5.7MB

Download
memory/1516-138-0x00000000745B0000-0x0000000074B61000-memory.dmp

Filesize
5.7MB

Download
memory/3132-140-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3132-141-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3132-142-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3132-139-0x0000000000000000-mapping.dmp

Download
memory/3132-145-0x00000000745B0000-0x0000000074B61000-memory.dmp

Filesize
5.7MB

Download
memory/3132-151-0x00000000745B0000-0x0000000074B61000-memory.dmp

Filesize
5.7MB

Download
memory/4496-137-0x00000000745B0000-0x0000000074B61000-memory.dmp

Filesize
5.7MB

Download
memory/4496-134-0x0000000000000000-mapping.dmp

Download
memory/4496-149-0x00000000745B0000-0x0000000074B61000-memory.dmp

Filesize
5.7MB

Download
memory/5108-146-0x0000000000000000-mapping.dmp

Download
memory/5108-150-0x00000000745B0000-0x0000000074B61000-memory.dmp

Filesize
5.7MB

Download
memory/5108-152-0x00000000745B0000-0x0000000074B61000-memory.dmp

Filesize
5.7MB

Download