nanocore | 785a0ef948a03ad85db1d57fb20d2f45de28327fb3495dd123daeac057b51982

Analysis

max time kernel
141s
max time network
145s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
07-08-2024 06:43

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General

Target

xcy.exe
Size

325KB
MD5

dca7acf1bb4a1a0d836d749921b7b265
SHA1

fc6f60fc98377d8901fa9a35d4457c8f4dfb152a
SHA256

785a0ef948a03ad85db1d57fb20d2f45de28327fb3495dd123daeac057b51982
SHA512

945ff619d69e3a508e9ba7a4d77ecbbed34e906c9222852e2afd479234b3150c81f084a7cd42b081c52edf6e09e7871f9dc52face1bfad32317bbd3442d8efa6
SSDEEP

6144:WLV6Bta6dtJmakIM5DXINTT8LgAFAl7R9urSxxV2Pvj3Y+w5A6:WLV6BtpmkbT2GRn2PvTk

Score

10^/10

nanocore discovery 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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\NAT Service = "C:\\Program Files (x86)\\NAT Service\\natsvc.exe"	xcy.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	xcy.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\NAT Service\natsvc.exe	xcy.exe
File opened for modification	C:\Program Files (x86)\NAT Service\natsvc.exe	xcy.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xcy.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
580	xcy.exe
580	xcy.exe
580	xcy.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
580	xcy.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	580	xcy.exe
Token: SeDebugPrivilege	580	xcy.exe

C:\Users\Admin\AppData\Local\Temp\xcy.exe
"C:\Users\Admin\AppData\Local\Temp\xcy.exe"
1⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/580-0-0x0000000074AD1000-0x0000000074AD2000-memory.dmp

Filesize
4KB

Download
memory/580-1-0x0000000074AD0000-0x000000007507B000-memory.dmp

Filesize
5.7MB

Download
memory/580-2-0x0000000074AD0000-0x000000007507B000-memory.dmp

Filesize
5.7MB

Download
memory/580-5-0x0000000074AD0000-0x000000007507B000-memory.dmp

Filesize
5.7MB

Download