nanocore | 1a9dc2fbfe2257278e6452872cdbd18c50bf5c7142dd04c772f1633a7f20fd0d

General

Target

MSystem32.exe
Size

235KB
MD5

0b9c6adaad6b250ad72923c2014b44b0
SHA1

7b9f82bef71e2d4ddfc258c2d1b7e7c5f76547fe
SHA256

1a9dc2fbfe2257278e6452872cdbd18c50bf5c7142dd04c772f1633a7f20fd0d
SHA512

3b9e734d09e8f01751d370aaff2cbe68ecaf18ec78ef6cc97974ff1ab8c5fe8db2b8b942e86b4b15e8f2657f5f5141088ca0cbe5b845b878732d3bed521aa0b7
SSDEEP

6144:ZLV6Bta6dtJmakIM5HrnJk4wyKmtkn3Y2AI:ZLV6Btpmkmd2etYIU

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 Host = "C:\\Program Files (x86)\\ARP Host\\arphost.exe"	MSystem32.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	MSystem32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ARP Host\arphost.exe	MSystem32.exe
File opened for modification	C:\Program Files (x86)\ARP Host\arphost.exe	MSystem32.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	MSystem32.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
4948	schtasks.exe
2984	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3800	MSystem32.exe
3800	MSystem32.exe
3800	MSystem32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3800	MSystem32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3800	MSystem32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3800 wrote to memory of 4948	3800	MSystem32.exe	84
PID 3800 wrote to memory of 4948	3800	MSystem32.exe	84
PID 3800 wrote to memory of 4948	3800	MSystem32.exe	84
PID 3800 wrote to memory of 2984	3800	MSystem32.exe	86
PID 3800 wrote to memory of 2984	3800	MSystem32.exe	86
PID 3800 wrote to memory of 2984	3800	MSystem32.exe	86

C:\Users\Admin\AppData\Local\Temp\MSystem32.exe
"C:\Users\Admin\AppData\Local\Temp\MSystem32.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:3800
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC5E0.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4948
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "ARP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC64E.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC5E0.tmp

Filesize
1KB

MD5
70a5290449d42d34a7817f77297cca61

SHA1
c591a1357c60792d4134ea4759a5339e36d5e84f

SHA256
ad9ee1c7640dc0b9389a68be5ef636d48c0c363c348ce00cba10e27c564f389a

SHA512
71eaec9936ab1bd2c4effe244baf08e900c2c1923bf4baaa4115df7874893f25c6bf2fb3e0dd2ecafa1ae95b632625da05c893fa7f6c743b668fdbdb4a1de83f

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC64E.tmp

Filesize
1KB

MD5
447ab194ab36cb1d20078d80e502b1b2

SHA1
a947b3b2c91d7c50bb8d39bd4fc91a0d0cc5b1c0

SHA256
8d5304b20b7d7dea223ce2738e5668054250d57bf6bed86b305b69924bd472f5

SHA512
49ddc557f7f6635627eea9bf0fa12a14b7b13edb235ed560ee0044a7f87fe27b686ff878d347d0273d92eb0b318b8c2bca85c0fbf42d586ed7d7da39eac6a327

Download Submit
memory/3800-0-0x00000000746C2000-0x00000000746C3000-memory.dmp

Filesize
4KB

Download
memory/3800-1-0x00000000746C0000-0x0000000074C71000-memory.dmp

Filesize
5.7MB

Download
memory/3800-2-0x00000000746C0000-0x0000000074C71000-memory.dmp

Filesize
5.7MB

Download
memory/3800-10-0x00000000746C0000-0x0000000074C71000-memory.dmp

Filesize
5.7MB

Download
memory/3800-11-0x00000000746C2000-0x00000000746C3000-memory.dmp

Filesize
4KB

Download
memory/3800-12-0x00000000746C0000-0x0000000074C71000-memory.dmp

Filesize
5.7MB

Download
memory/3800-13-0x00000000746C0000-0x0000000074C71000-memory.dmp

Filesize
5.7MB

Download
memory/3800-14-0x00000000746C0000-0x0000000074C71000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads