nanocore | c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d

General

Target
c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
Size 577KB
Sample221126-3te9vsdg34
SHA256 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d
MD5 3620dd811026e8b6c28e7780be40fb98
SHA1 bbed7ab4f72388398cfc561b878a6179bbfc59c7
SHA512 e1844f56693665491079a02464722676251809821720eec530a6fd3fa2481631f4acb002ae832af1d149111dae9b271db5143d6655d5653b388546dea586fa42
SSDEEP 12288:htsDO4UAN+AVoa+ueIG/8V9uQNSncmDij4bsSi5+R:qrN+AVoa+qG/K9uQNSncU4sycR
MD5 SHA1 SHA512 SSDEEP

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Subsystem = "C:\\Program Files (x86)\\DHCP Subsystem\\dhcpss.exe"	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.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	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
File opened for modification	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
4924	schtasks.exe
364	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
Token: SeDebugPrivilege	3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3868 wrote to memory of 4924	3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe	81
PID 3868 wrote to memory of 4924	3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe	81
PID 3868 wrote to memory of 4924	3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe	81
PID 3868 wrote to memory of 364	3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe	83
PID 3868 wrote to memory of 364	3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe	83
PID 3868 wrote to memory of 364	3868	c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe	83

C:\Users\Admin\AppData\Local\Temp\c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
"C:\Users\Admin\AppData\Local\Temp\c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe"
1⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3868
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDF58.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4924
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE14D.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:364

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpDF58.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpDF58.tmp
Size 1KB
SHA256 5f9514bf173f3f8403fe7f931e922629f839103d91bd73d77916561dcc13b019
MD5 3a73c4001d745adf4e70e4562531ffec
SHA1 fb10145c878e931fb318fc7c51817cf7e6fae687
SHA512 0299413bc5094710d399f8a50253f4aa0a68cd14024da4713917b305bc6e57ecf7385846563bd16bdfab88671237df31c943b7587c3fcd7137820f5f07c68534
MD5 SHA1 SHA512

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tmpE14D.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpE14D.tmp
Size 1KB
SHA256 99a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa
MD5 2f26d92c1eeead3896820e56ec46f6f1
SHA1 d95533b61eed7d89e4ada56bc566d60e42ac1f61
SHA512 6c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892
MD5 SHA1 SHA512

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memory/3868-132-0x0000000074750000-0x0000000074D01000-memory.dmp

Download

memory/3868-137-0x0000000074750000-0x0000000074D01000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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