nanocore | ba6a99c5074a58183983e70930028ae4ad4b8dff0f08be38e4aaaec16340732f

Resubmissions

20/02/2024, 04:15

240220-et9ayaag3z10

20/02/2024, 03:40

240220-d8jhdsba5210

Analysis

max time kernel
152s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 03:40

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General

Target
42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe
Size 203KB
Sample240220-d8jhdsba52
SHA256 42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe
MD5 cad2e56e0f6f490b74884f3d0237b37f
SHA1 dbdf46ab3af70b281439adc47a240e15915ab137
SHA512 3139fea1eb36e5149e827ba7eace7f8c1b56e44ba459546e72c8a98e726b4f58e543bedfd282b646af0a20d28738ca934ce4052bb758d2f23d809aed822da269
SSDEEP 3072:MzEqV6B1jHa6dtJ10jgvzcgi+oG/j9iaMP2s/HII0svu1SEImfAF8V7m8CJvflRg:MLV6Bta6dtJmakIM59uvImfVqflRj0v3
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

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"	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.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	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DHCP Service\dhcpsvc.exe	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe
File opened for modification	C:\Program Files (x86)\DHCP Service\dhcpsvc.exe	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.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/Job

T1053

pid	Process
3488	schtasks.exe
3096	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe
3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe
3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 3488	3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe	84
PID 3312 wrote to memory of 3488	3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe	84
PID 3312 wrote to memory of 3488	3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe	84
PID 3312 wrote to memory of 3096	3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe	86
PID 3312 wrote to memory of 3096	3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe	86
PID 3312 wrote to memory of 3096	3312	42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe	86

C:\Users\Admin\AppData\Local\Temp\42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.exe
"C:\Users\Admin\AppData\Local\Temp\42c3d510fa655fa4f20163b69172a6dff1e990e8630fa465c4cb01c47f50cefe.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:3312
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "DHCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFDE8.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3488
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "DHCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFFCD.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3096

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

tmpFDE8.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpFDE8.tmp
Size 1KB
SHA256 ba37d3b467c6363860ce132a3b3f8f0ea39cb9f50d6c0100d940bf87a77dbbc0
MD5 20e9fac12601092c07a517e8dde6d6dc
SHA1 4c563048208f6e98456f6405b246ca5c04f1ccf9
SHA512 5f16e07f192d909c36599b3f34bf349d735722eec8f3d1158344827ef62e6ba68a39700744d5458611c3910b453ed411d0357e7c29dcb963f53e7c86c18bf13a
MD5 SHA1 SHA512

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tmpFFCD.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpFFCD.tmp
Size 1KB
SHA256 39b16b3a00b6b43c6820357127228c0768a577153014ce7b0ea3c585244dc08b
MD5 7f4b37265a0a4b0fea67999d11d911e8
SHA1 1b8e13e6a27c3768c30cf713b79eaa8a757e1349
SHA512 ef97ccfb663555aedc7fdc4b3ac4cd6536c80a778b4ec3bc6124a09544733988de1dac1e6a3714b0d6e8713e3523e0732d5dfcf674f2c5e1f3eadacb0c8e5e03
MD5 SHA1 SHA512

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memory/3312-0-0x0000000074FF0000-0x00000000755A1000-memory.dmp

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memory/3312-1-0x0000000074FF0000-0x00000000755A1000-memory.dmp

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memory/3312-2-0x0000000000FB0000-0x0000000000FC0000-memory.dmp

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memory/3312-10-0x0000000000FB0000-0x0000000000FC0000-memory.dmp

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memory/3312-11-0x0000000074FF0000-0x00000000755A1000-memory.dmp

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memory/3312-12-0x0000000074FF0000-0x00000000755A1000-memory.dmp

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memory/3312-13-0x0000000000FB0000-0x0000000000FC0000-memory.dmp

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memory/3312-14-0x0000000000FB0000-0x0000000000FC0000-memory.dmp

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