nanocore | d7b89aea06b8f395f4ca70581e5623477baa13a2234210c1a751b9273aee61d8

General

Target

uwu_deobfuscated.exe
Size

157KB
MD5

3d2554d2337c1a46547ebbcaf576b16a
SHA1

378617666de03e849739688363be5731543701af
SHA256

d7b89aea06b8f395f4ca70581e5623477baa13a2234210c1a751b9273aee61d8
SHA512

96a71226d10a798a8238158d3f0017a36b235130e9969afb25f60bce4ed84db0a7ab5d49efd395e1aae36413ca3c52b1f86659db13b4c473ab94dec9c5bc8248
SSDEEP

3072:AJEZzJZ5WY+apEbTmFxjpcJslEjqZ4UHtbrOrh0fESWFHI9f8waw+PNIhrHad:NZT5TbjiJslEjqZ4UHtbch0cFHkf8wa5

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
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\DHCP Service = "C:\\Program Files (x86)\\DHCP Service\\dhcpsvc.exe"	uwu_deobfuscated.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	uwu_deobfuscated.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\DHCP Service\dhcpsvc.exe	uwu_deobfuscated.exe
File created	C:\Program Files (x86)\DHCP Service\dhcpsvc.exe	uwu_deobfuscated.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	uwu_deobfuscated.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
3780	schtasks.exe
1056	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2692	uwu_deobfuscated.exe
2692	uwu_deobfuscated.exe
2692	uwu_deobfuscated.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2692	uwu_deobfuscated.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2692	uwu_deobfuscated.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 3780	2692	uwu_deobfuscated.exe	83
PID 2692 wrote to memory of 3780	2692	uwu_deobfuscated.exe	83
PID 2692 wrote to memory of 3780	2692	uwu_deobfuscated.exe	83
PID 2692 wrote to memory of 1056	2692	uwu_deobfuscated.exe	85
PID 2692 wrote to memory of 1056	2692	uwu_deobfuscated.exe	85
PID 2692 wrote to memory of 1056	2692	uwu_deobfuscated.exe	85

C:\Users\Admin\AppData\Local\Temp\uwu_deobfuscated.exe
"C:\Users\Admin\AppData\Local\Temp\uwu_deobfuscated.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:2692
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "DHCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8E07.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3780
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "DHCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8E66.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1056

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8E07.tmp

Filesize
1KB

MD5
d51d833f8d93dbbbdddfc38a71fd118d

SHA1
0a84865f1888ca3cbe8bf202e21a1a272df8bc28

SHA256
7f07460d7bfee960c44170b0be31dd6d00df544d3a2b73e96ad87af457a80e0e

SHA512
79723afa846f8ad2d1e8db702a3f0579cb8b32f15c3d079f1cda01bf2ca84e89af0b29ac017989e052a7426ba5980936591d87634a1b0670d9654662e3ddf3c9

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8E66.tmp

Filesize
1KB

MD5
7f4b37265a0a4b0fea67999d11d911e8

SHA1
1b8e13e6a27c3768c30cf713b79eaa8a757e1349

SHA256
39b16b3a00b6b43c6820357127228c0768a577153014ce7b0ea3c585244dc08b

SHA512
ef97ccfb663555aedc7fdc4b3ac4cd6536c80a778b4ec3bc6124a09544733988de1dac1e6a3714b0d6e8713e3523e0732d5dfcf674f2c5e1f3eadacb0c8e5e03

Download Submit
memory/2692-0-0x0000000075572000-0x0000000075573000-memory.dmp

Filesize
4KB

Download
memory/2692-1-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/2692-2-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/2692-10-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/2692-11-0x0000000075572000-0x0000000075573000-memory.dmp

Filesize
4KB

Download
memory/2692-12-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/2692-13-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download
memory/2692-14-0x0000000075570000-0x0000000075B21000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads