nanocore | 2a0c4bfbb072e3d4b6bd68aac56cca963fa8391103fcad0558afd93697b7397d

General

Target

6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe
Size

1.3MB
MD5

6b7f805313404590fa1255ddd81eb103
SHA1

a7db732bcc981327b42fafb8f128dee9bab51e0b
SHA256

2a0c4bfbb072e3d4b6bd68aac56cca963fa8391103fcad0558afd93697b7397d
SHA512

996e21ad2e89486ac5c27338a2b3d0506537a421d417a876be5519c1fe895458e5d01b7cbe09708aaaa717054e476aaceb6e7e827fbf6175a1373b5c592ce8e4
SSDEEP

24576:ju6Jx3O0c+JY5UZ+XC0kGso/WaejypKO4FgUqayfWY:tI0c++OCvkGsUWaJugUVY

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

91.193.75.78:1961

Mutex

2fdffdbe-14f2-484d-93cb-088adf95d3a2

Attributes

activate_away_mode
true
backup_connection_host
91.193.75.78
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-09-22T07:34:41.665896436Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1961
default_group
WARZONE 3
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
2fdffdbe-14f2-484d-93cb-088adf95d3a2
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
91.193.75.78
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

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\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe"	RegAsm.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	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1932 set thread context of 3048	1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe	30

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	RegAsm.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3048	RegAsm.exe
3048	RegAsm.exe
3048	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3048	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3048	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe
1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe
1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe
1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe
1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 3048	1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe	30
PID 1932 wrote to memory of 3048	1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe	30
PID 1932 wrote to memory of 3048	1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe	30
PID 1932 wrote to memory of 3048	1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe	30
PID 1932 wrote to memory of 3048	1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe	30
PID 1932 wrote to memory of 3048	1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe	30
PID 1932 wrote to memory of 3048	1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe	30
PID 1932 wrote to memory of 3048	1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe	30
PID 1932 wrote to memory of 3048	1932	6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6b7f805313404590fa1255ddd81eb103_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\RegAsm.exe"
  2⤵
  - 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:3048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

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Downloads

memory/1932-0-0x0000000000140000-0x0000000000173000-memory.dmp

Filesize
204KB

Download
memory/1932-10-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/3048-1-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3048-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3048-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3048-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3048-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3048-11-0x0000000074992000-0x0000000074994000-memory.dmp

Filesize
8KB

Download
memory/3048-14-0x0000000074992000-0x0000000074994000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads