nanocore | 0892b24b3879f453fb22152f849805cb4be69d668db3408fa20647ef52eec74a

Analysis

max time kernel
146s
max time network
150s
platform
windows7_x64
resource
win7-20220414-en
submitted
07/05/2022, 02:42

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General

Target
17561cb37873e16c640da008549c0059.exe
Size 183KB
Sample220507-c61hfsdfdk
SHA256 0892b24b3879f453fb22152f849805cb4be69d668db3408fa20647ef52eec74a
MD5 17561cb37873e16c640da008549c0059
SHA1 7fd9f58f5d857edec001ae37235d35bf9f6867af
SHA512 3b323fa3072e21452aaeeb45547c9490450139b752b0da512142619172f5261298d1a0d4da981fe18671db147ad79b138bf81dd27ad58cc200f42625c542ca01
MD5 SHA1 SHA512

Score

10^/10

nanocore keylogger persistence spyware stealer suricata trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

estrenos1a.duckdns.org:2027

Mutex

e04d4a6a-2770-4229-aec7-1d061a3d975f

Attributes

activate_away_mode
true
backup_connection_host
estrenos1a.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-02-06T19:27:51.230709936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
2027
default_group
NEWS
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
e04d4a6a-2770-4229-aec7-1d061a3d975f
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\chrome.exe\","	17561cb37873e16c640da008549c0059.exe

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore
suricata: ET MALWARE Possible NanoCore C2 60B
suricata: ET MALWARE Possible NanoCore C2 60B
suricata

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1632 set thread context of 1960	1632	17561cb37873e16c640da008549c0059.exe	34

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
1992	timeout.exe
1948	timeout.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1632	17561cb37873e16c640da008549c0059.exe
1960	MSBuild.exe
1960	MSBuild.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1960	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1632	17561cb37873e16c640da008549c0059.exe
Token: SeDebugPrivilege	1960	MSBuild.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 2024	1632	17561cb37873e16c640da008549c0059.exe	28
PID 1632 wrote to memory of 2024	1632	17561cb37873e16c640da008549c0059.exe	28
PID 1632 wrote to memory of 2024	1632	17561cb37873e16c640da008549c0059.exe	28
PID 1632 wrote to memory of 2024	1632	17561cb37873e16c640da008549c0059.exe	28
PID 1632 wrote to memory of 2040	1632	17561cb37873e16c640da008549c0059.exe	29
PID 1632 wrote to memory of 2040	1632	17561cb37873e16c640da008549c0059.exe	29
PID 1632 wrote to memory of 2040	1632	17561cb37873e16c640da008549c0059.exe	29
PID 1632 wrote to memory of 2040	1632	17561cb37873e16c640da008549c0059.exe	29
PID 2024 wrote to memory of 1948	2024	cmd.exe	33
PID 2024 wrote to memory of 1948	2024	cmd.exe	33
PID 2024 wrote to memory of 1948	2024	cmd.exe	33
PID 2024 wrote to memory of 1948	2024	cmd.exe	33
PID 2040 wrote to memory of 1992	2040	cmd.exe	32
PID 2040 wrote to memory of 1992	2040	cmd.exe	32
PID 2040 wrote to memory of 1992	2040	cmd.exe	32
PID 2040 wrote to memory of 1992	2040	cmd.exe	32
PID 1632 wrote to memory of 1960	1632	17561cb37873e16c640da008549c0059.exe	34
PID 1632 wrote to memory of 1960	1632	17561cb37873e16c640da008549c0059.exe	34
PID 1632 wrote to memory of 1960	1632	17561cb37873e16c640da008549c0059.exe	34
PID 1632 wrote to memory of 1960	1632	17561cb37873e16c640da008549c0059.exe	34
PID 1632 wrote to memory of 1960	1632	17561cb37873e16c640da008549c0059.exe	34
PID 1632 wrote to memory of 1960	1632	17561cb37873e16c640da008549c0059.exe	34
PID 1632 wrote to memory of 1960	1632	17561cb37873e16c640da008549c0059.exe	34
PID 1632 wrote to memory of 1960	1632	17561cb37873e16c640da008549c0059.exe	34
PID 1632 wrote to memory of 1960	1632	17561cb37873e16c640da008549c0059.exe	34

C:\Users\Admin\AppData\Local\Temp\17561cb37873e16c640da008549c0059.exe
"C:\Users\Admin\AppData\Local\Temp\17561cb37873e16c640da008549c0059.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 20
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2024
- - C:\Windows\SysWOW64\timeout.exe
    timeout 20
    3⤵
    - Delays execution with timeout.exe
    PID:1948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 20
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2040
- - C:\Windows\SysWOW64\timeout.exe
    timeout 20
    3⤵
    - Delays execution with timeout.exe
    PID:1992
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:1960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1632-55-0x0000000075361000-0x0000000075363000-memory.dmp

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memory/1632-56-0x0000000007CA0000-0x0000000007E28000-memory.dmp

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memory/1632-54-0x0000000000DD0000-0x0000000000E02000-memory.dmp

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memory/1632-61-0x0000000005240000-0x0000000005292000-memory.dmp

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memory/1960-65-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1960-68-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1960-78-0x0000000004875000-0x0000000004886000-memory.dmp

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memory/1960-62-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1960-63-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1960-77-0x00000000003F0000-0x00000000003FA000-memory.dmp

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memory/1960-66-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1960-76-0x00000000003D0000-0x00000000003EE000-memory.dmp

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memory/1960-71-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1960-73-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1960-75-0x00000000003C0000-0x00000000003CA000-memory.dmp

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