nanocore | 39609f52c5351fcce7e031a6c0c43bbb32899d3a23204cec330f97cc05c602bb

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
29/07/2024, 00:43

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General

Target
2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe
Size 416KB
Sample240729-a3arhsybrf
SHA256 39609f52c5351fcce7e031a6c0c43bbb32899d3a23204cec330f97cc05c602bb
MD5 2e8da64c68d2020b127637af76999eae
SHA1 576a0e6b2ad0d3683982f9ed380f50020f851fb2
SHA512 c142f053d074a7a1f426779b6bdc4f6d249eb85d2dedc9a49114ebd4180369389ba66dde3bd93dc842e164131e862aa1c65db2824e26672337ed975caf7a0e59
SSDEEP 12288:xQe926EQ2q+MpWBbDu9SkDNhSt6GR0CoFbJ30rPdQuo:3ppW10NhSRRgb6rPd
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

owens.ddns.net:4040

Mutex

e8fc5dec-c000-4a89-a1aa-ebb0418b2e71

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2017-09-02T02:48:13.513691336Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
4040
default_group
Nov 2017
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
e8fc5dec-c000-4a89-a1aa-ebb0418b2e71
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
owens.ddns.net
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-113082768-653872390-2867000172-1000\Control Panel\International\Geo\Nation	2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4500	winlogins.exe
4408	winlogins.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-113082768-653872390-2867000172-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogin = "C:\\Users\\Admin\\AppData\\Local\\winlogins.exe -boot"	winlogins.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DPI Subsystem = "C:\\Program Files (x86)\\DPI Subsystem\\dpiss.exe"	winlogins.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	winlogins.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4500 set thread context of 4408	4500	winlogins.exe	90

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DPI Subsystem\dpiss.exe	winlogins.exe
File opened for modification	C:\Program Files (x86)\DPI Subsystem\dpiss.exe	winlogins.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	winlogins.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogins.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4408	winlogins.exe
4408	winlogins.exe
4408	winlogins.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4408	winlogins.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1584	2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe
Token: SeDebugPrivilege	4500	winlogins.exe
Token: SeDebugPrivilege	4408	winlogins.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1584 wrote to memory of 744	1584	2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe	84
PID 1584 wrote to memory of 744	1584	2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe	84
PID 1584 wrote to memory of 744	1584	2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe	84
PID 1584 wrote to memory of 1524	1584	2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe	87
PID 1584 wrote to memory of 1524	1584	2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe	87
PID 1584 wrote to memory of 1524	1584	2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe	87
PID 1524 wrote to memory of 4500	1524	cmd.exe	89
PID 1524 wrote to memory of 4500	1524	cmd.exe	89
PID 1524 wrote to memory of 4500	1524	cmd.exe	89
PID 4500 wrote to memory of 4408	4500	winlogins.exe	90
PID 4500 wrote to memory of 4408	4500	winlogins.exe	90
PID 4500 wrote to memory of 4408	4500	winlogins.exe	90
PID 4500 wrote to memory of 4408	4500	winlogins.exe	90
PID 4500 wrote to memory of 4408	4500	winlogins.exe	90
PID 4500 wrote to memory of 4408	4500	winlogins.exe	90
PID 4500 wrote to memory of 4408	4500	winlogins.exe	90
PID 4500 wrote to memory of 4408	4500	winlogins.exe	90

C:\Users\Admin\AppData\Local\Temp\2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1584
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe" "C:\Users\Admin\AppData\Local\winlogins.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Local\winlogins.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1524
- - C:\Users\Admin\AppData\Local\winlogins.exe
    "C:\Users\Admin\AppData\Local\winlogins.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4500
  - - C:\Users\Admin\AppData\Local\winlogins.exe
      "C:\Users\Admin\AppData\Local\winlogins.exe"
      4⤵
      Executes dropped EXE
      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
      PID:4408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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

winlogins.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\winlogins.exe.log
Size 706B
SHA256 03c3a90b4c2615ddd7bc4b663ba3cce4969223c0a21c53624c6f792ffde91de4
MD5 0110f3d722cddd9753644c78a308ff57
SHA1 c461bb3812ae8a3c77d0ec99850b3a88eda2ccc7
SHA512 8a581416a1a9e355e6cda1d4f2a93df807421ec2706c717c5d5d2acd004af2c14ee77d94c48e6643320dd2cd2e1072b9cfd8ecf37c0e8fb38df7d9f0c40cdf63
MD5 SHA1 SHA512

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winlogins.exe

Path C:\Users\Admin\AppData\Local\winlogins.exe
Size 416KB
SHA256 39609f52c5351fcce7e031a6c0c43bbb32899d3a23204cec330f97cc05c602bb
MD5 2e8da64c68d2020b127637af76999eae
SHA1 576a0e6b2ad0d3683982f9ed380f50020f851fb2
SHA512 c142f053d074a7a1f426779b6bdc4f6d249eb85d2dedc9a49114ebd4180369389ba66dde3bd93dc842e164131e862aa1c65db2824e26672337ed975caf7a0e59
SSDEEP 12288:xQe926EQ2q+MpWBbDu9SkDNhSt6GR0CoFbJ30rPdQuo:3ppW10NhSRRgb6rPd
MD5 SHA1 SHA512 SSDEEP

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memory/1584-6-0x0000000007A80000-0x0000000008024000-memory.dmp

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memory/1584-1-0x0000000000450000-0x00000000004C2000-memory.dmp

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memory/1584-4-0x0000000007430000-0x00000000074C2000-memory.dmp

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memory/1584-5-0x00000000750D0000-0x0000000075880000-memory.dmp

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memory/1584-0-0x00000000750DE000-0x00000000750DF000-memory.dmp

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memory/1584-7-0x00000000010A0000-0x00000000010AC000-memory.dmp

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memory/1584-10-0x00000000750DE000-0x00000000750DF000-memory.dmp

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memory/1584-11-0x00000000750D0000-0x0000000075880000-memory.dmp

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memory/1584-13-0x00000000750D0000-0x0000000075880000-memory.dmp

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memory/1584-2-0x00000000028B0000-0x00000000028F6000-memory.dmp

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memory/1584-3-0x0000000000DD0000-0x0000000000DF0000-memory.dmp

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memory/4408-22-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4408-27-0x00000000055C0000-0x00000000055CA000-memory.dmp

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memory/4408-30-0x0000000005890000-0x000000000589A000-memory.dmp

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memory/4408-31-0x0000000005B10000-0x0000000005B2E000-memory.dmp

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memory/4408-32-0x0000000005B30000-0x0000000005B3A000-memory.dmp

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memory/4500-18-0x00000000750D0000-0x0000000075880000-memory.dmp

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memory/4500-19-0x00000000750D0000-0x0000000075880000-memory.dmp

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memory/4500-20-0x00000000750D0000-0x0000000075880000-memory.dmp

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memory/4500-21-0x0000000007E80000-0x0000000007F1C000-memory.dmp

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memory/4500-17-0x00000000750D0000-0x0000000075880000-memory.dmp

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memory/4500-26-0x00000000750D0000-0x0000000075880000-memory.dmp

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