nanocore | b75ecda4b4e0da44d88a871d48168a92d39e11a7c0eb0ba626a1f78e793b027d

Resubmissions

13-09-2024 05:33

240913-f8xq5axcpd 10

Analysis

max time kernel
148s
max time network
128s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
13-09-2024 05:33

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General

Target

w.exe
Size

203KB
MD5

2a2de5272ec9bfa224ed53d1bd36984a
SHA1

10e80ca6aefd7c78e56435808d9fcced9ab33217
SHA256

b75ecda4b4e0da44d88a871d48168a92d39e11a7c0eb0ba626a1f78e793b027d
SHA512

3e2054895226b4af02a1f5afb884521e70a5772c749a5564322e87276cfac7edf2ca9da0fe72ffb378268983b47cbde4998e3fad0c90153548ab4277d27cd36c
SSDEEP

6144:sLV6Bta6dtJmakIM5EEN/wjwJsvle+o9f/J:sLV6BtpmkeElepZ

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

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\IMAP Monitor = "C:\\Program Files (x86)\\IMAP Monitor\\imapmon.exe"	w.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	w.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\IMAP Monitor\imapmon.exe	w.exe
File opened for modification	C:\Program Files (x86)\IMAP Monitor\imapmon.exe	w.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	w.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
3328	schtasks.exe
3700	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4592	w.exe
4592	w.exe
4592	w.exe
4592	w.exe
4592	w.exe
4592	w.exe
4592	w.exe
4592	w.exe
4592	w.exe
4592	w.exe
4592	w.exe
4592	w.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4592	w.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4592	w.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 3328	4592	w.exe	81
PID 4592 wrote to memory of 3328	4592	w.exe	81
PID 4592 wrote to memory of 3328	4592	w.exe	81
PID 4592 wrote to memory of 3700	4592	w.exe	83
PID 4592 wrote to memory of 3700	4592	w.exe	83
PID 4592 wrote to memory of 3700	4592	w.exe	83

C:\Users\Admin\AppData\Local\Temp\w.exe
"C:\Users\Admin\AppData\Local\Temp\w.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:4592
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "IMAP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp75CC.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3328
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "IMAP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp761B.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3700

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp75CC.tmp

Filesize
1KB

MD5
3e695ac5796d8b4fbfcb0ec797c67b7b

SHA1
f820a93c9a19ab7ebd14bd0eb7c5e765abafc604

SHA256
61f9f68def4fd46ddcb308dcc16c0ef0f871cae40cc8b4ecde8b22307b76c19f

SHA512
7096c583acfee75eec56bdbc63e8a2c5202a26cfcb5c6971625edbd9046ded7e32c9c33b3195533673558aa0b6025c2f6d9fe2203b4bb390c13f743439c92652

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp761B.tmp

Filesize
1KB

MD5
d2d6911d94b06e405e7687a2437eafec

SHA1
9f28f9e7d8d5179d44ddaa6ca266984ed7521dea

SHA256
2dc87169ad53fbdd7abb08f49777cb8fb05adbff4e6f6616b4c89942af8cad0f

SHA512
b5983de701ff98e944283a25f1770c1e792d52148dc1671f1d19203f8b9d10b056abcf79a17ca536a5f88ccf52f6445d8f3e75fce628666640ad8bad697dcfd1

Download Submit
memory/4592-0-0x00000000751F1000-0x00000000751F2000-memory.dmp

Filesize
4KB

Download
memory/4592-1-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-2-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-10-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-11-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-12-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-13-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download