nanocore | 4bcbb8983fe7425976c5a1789deff73fb138e80981f5ebfef1f835bcc6757760

Resubmissions

08/04/2025, 14:11

250408-rhjmcsvp15 10

22/03/2025, 06:18

250322-g2ywaay1fy 10

Analysis

max time kernel
147s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2025, 14:11

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General

Target

f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe
Size

203KB
MD5

78be6e34e084a276a492dca4ab0c244b
SHA1

ed34261034f95ea92460e82d0af35ffabf6ba7ec
SHA256

f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7
SHA512

298d5bc97c6c47c81bb5eec2985276e078739971ccaebafbb3c289f55daaabb9d3a871682b40caa5fc499635e892be93f51062aa1b903a41487bbd32c98d53ec
SSDEEP

3072:szEqV6B1jHa6dtJ10jgvzcgi+oG/j9iaMP2s/HIbjiT05t4Ziu8hBVv4TPcXQZqn:sLV6Bta6dtJmakIM5BGtMMnEcXs7hmk2

Score

10^/10

nanocore defense_evasion discovery 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
Nanocore family
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\ARP Service = "C:\\Program Files (x86)\\ARP Service\\arpsv.exe"	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\ARP Service\arpsv.exe	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe
File created	C:\Program Files (x86)\ARP Service\arpsv.exe	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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

pid	Process
5368	schtasks.exe
32	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe
5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe
5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5992 wrote to memory of 5368	5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe	90
PID 5992 wrote to memory of 5368	5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe	90
PID 5992 wrote to memory of 5368	5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe	90
PID 5992 wrote to memory of 32	5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe	92
PID 5992 wrote to memory of 32	5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe	92
PID 5992 wrote to memory of 32	5992	f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe	92

C:\Users\Admin\AppData\Local\Temp\f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.exe
"C:\Users\Admin\AppData\Local\Temp\f835ddaf4933c7bd4a3aa1f015442bb48b69f863f467dd8d1db09e6f2a427fd7.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
- Suspicious use of WriteProcessMemory
PID:5992
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "ARP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp70EA.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:5368
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "ARP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp71D5.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:32

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Program Files (x86)\ARP Service\arpsv.exe
1⤵
PID:6028

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

C:\Users\Admin\AppData\Local\Temp\tmp70EA.tmp

Filesize
1KB

MD5
2df0f7425c6f4a9c09cafe95ad3e305f

SHA1
e7a9e070f0aa700f41855769eeb9a25330b7800d

SHA256
7ce2f53ee5d26a85c6807a713e7616d8238bfd5cad6904c3151095695c40bc1a

SHA512
a3945f271a3df9007f909e59bbcbea406a296391b5111642ba13697ca6c65411380ce74a268b84229e0a31ffa86a906d9c69a4a62630f1fb5008b5fa110430eb

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp71D5.tmp

Filesize
1KB

MD5
e3d8a2c80dc1de6ebee175682e7e4dd3

SHA1
5bb398aed2393c4cf0346b562b838c95fd708309

SHA256
60775bc8ec1db88eff1bd8ee35f3a237e2b3b65d4c8835d582dc410523f33aa0

SHA512
f61d934c0bd3122f0842de57f5ab0853b31be672360c5cce09f3509920b3da0690240da89e5d31a9c8cb67383f635e03085b5b44416a042e4501aa35fb58c912

Download Submit
memory/5992-0-0x0000000074EE2000-0x0000000074EE3000-memory.dmp

Filesize
4KB

Download
memory/5992-1-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/5992-2-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/5992-10-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/5992-11-0x0000000074EE2000-0x0000000074EE3000-memory.dmp

Filesize
4KB

Download
memory/5992-12-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/5992-13-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/5992-14-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download