nanocore | 1a9dc2fbfe2257278e6452872cdbd18c50bf5c7142dd04c772f1633a7f20fd0d

General

Target
MSystem32.exe
Size 235KB
Sample250122-gm2zds1pht
SHA256 1a9dc2fbfe2257278e6452872cdbd18c50bf5c7142dd04c772f1633a7f20fd0d
MD5 0b9c6adaad6b250ad72923c2014b44b0
SHA1 7b9f82bef71e2d4ddfc258c2d1b7e7c5f76547fe
SHA512 3b9e734d09e8f01751d370aaff2cbe68ecaf18ec78ef6cc97974ff1ab8c5fe8db2b8b942e86b4b15e8f2657f5f5141088ca0cbe5b845b878732d3bed521aa0b7
SSDEEP 6144:ZLV6Bta6dtJmakIM5HrnJk4wyKmtkn3Y2AI:ZLV6Btpmkmd2etYIU
MD5 SHA1 SHA512 SSDEEP

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\NTFS Manager = "C:\\Program Files (x86)\\NTFS Manager\\ntfsmgr.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 opened for modification	C:\Program Files (x86)\NTFS Manager\ntfsmgr.exe	MSystem32.exe
File created	C:\Program Files (x86)\NTFS Manager\ntfsmgr.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSystem32.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
3404	schtasks.exe
1092	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1360	MSystem32.exe
1360	MSystem32.exe
1360	MSystem32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1360	MSystem32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1360	MSystem32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 3404	1360	MSystem32.exe	82
PID 1360 wrote to memory of 3404	1360	MSystem32.exe	82
PID 1360 wrote to memory of 3404	1360	MSystem32.exe	82
PID 1360 wrote to memory of 1092	1360	MSystem32.exe	84
PID 1360 wrote to memory of 1092	1360	MSystem32.exe	84
PID 1360 wrote to memory of 1092	1360	MSystem32.exe	84

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:1360
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "NTFS Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8973.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3404
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "NTFS Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp89D2.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1092

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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tmp8973.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp8973.tmp
Size 1KB
SHA256 ad9ee1c7640dc0b9389a68be5ef636d48c0c363c348ce00cba10e27c564f389a
MD5 70a5290449d42d34a7817f77297cca61
SHA1 c591a1357c60792d4134ea4759a5339e36d5e84f
SHA512 71eaec9936ab1bd2c4effe244baf08e900c2c1923bf4baaa4115df7874893f25c6bf2fb3e0dd2ecafa1ae95b632625da05c893fa7f6c743b668fdbdb4a1de83f
MD5 SHA1 SHA512

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tmp89D2.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp89D2.tmp
Size 1KB
SHA256 f76bd5da395a725b5998efab9a5d3160657cf2d44a8be83fa24af6ba29acf731
MD5 41808f05a9aa523d0ef506d4993f1d6c
SHA1 5a228145decf63ebbbd673c9b7c08a86236a22d4
SHA512 7cf71f8fd8dccaa8cf2c724afca3178be8b7a6e0cc6e4b44990e96413bd0dac8248e2bcfa1bb82da05efb6c4b46649722c20ce14cf4a44f1720e18732bd9246e
MD5 SHA1 SHA512

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memory/1360-0-0x00007FF9BE610000-0x00007FF9BE805000-memory.dmp

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memory/1360-1-0x00007FF9BE610000-0x00007FF9BE805000-memory.dmp

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memory/1360-9-0x00007FF9BE610000-0x00007FF9BE805000-memory.dmp

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memory/1360-10-0x00007FF9BE610000-0x00007FF9BE805000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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