nanocore | def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27

General

Target

ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe
Size

1.2MB
MD5

ab97523c0c284868c08c9120d921ba06
SHA1

0c79283dff6d22f7cf85561f33ff8f2753de880a
SHA256

def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27
SHA512

06c09f00cc60e682453b5317f23f9c1d36a1535b0f5de10e491dc587953d43345e41dd50acfc7019487180f48e504cd8a6d4b10029c1508b367ba9609e96f554
SSDEEP

24576:ZAHnh+eWsN3skA4RV1Hom2KXMmHa+erpr3rzzF5:gh+ZkldoPK8Ya+WL

Score

10^/10

nanocore discovery evasion keylogger persistence privilege_escalation spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.162.88.16:2359

dish123newpro.publicvm.com:2359

Mutex

c253fe26-7f15-444b-bcbf-bdaaa6a4fb19

Attributes

activate_away_mode
true
backup_connection_host
dish123newpro.publicvm.com
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-12-27T16:33:42.242053636Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
2359
default_group
NANO17032019
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
c253fe26-7f15-444b-bcbf-bdaaa6a4fb19
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
185.162.88.16
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

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

Checks computer location settings 2 TTPs 3 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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	osk.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	osk.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4804	osk.exe
3096	osk.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

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x00070000000234d4-14.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4740 set thread context of 3648	4740	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe	84
PID 4804 set thread context of 4764	4804	osk.exe	102
PID 3096 set thread context of 3960	3096	osk.exe	115

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

System Information Discovery
T1082
Event Triggered Execution: Accessibility Features 1 TTPs
Windows contains accessibility features that may be used by adversaries to establish persistence and/or elevate privileges.
persistence privilege_escalation

Accessibility Features
T1546.008

System Location Discovery: System Language Discovery 1 TTPs 9 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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	osk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	osk.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2064	schtasks.exe
3856	schtasks.exe
3164	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3648	RegAsm.exe
3648	RegAsm.exe
3648	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3648	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3648	RegAsm.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 3648	4740	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe	84
PID 4740 wrote to memory of 3648	4740	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe	84
PID 4740 wrote to memory of 3648	4740	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe	84
PID 4740 wrote to memory of 3648	4740	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe	84
PID 4740 wrote to memory of 3648	4740	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe	84
PID 4740 wrote to memory of 2064	4740	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe	87
PID 4740 wrote to memory of 2064	4740	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe	87
PID 4740 wrote to memory of 2064	4740	ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe	87
PID 4804 wrote to memory of 4764	4804	osk.exe	102
PID 4804 wrote to memory of 4764	4804	osk.exe	102
PID 4804 wrote to memory of 4764	4804	osk.exe	102
PID 4804 wrote to memory of 4764	4804	osk.exe	102
PID 4804 wrote to memory of 4764	4804	osk.exe	102
PID 4804 wrote to memory of 3856	4804	osk.exe	103
PID 4804 wrote to memory of 3856	4804	osk.exe	103
PID 4804 wrote to memory of 3856	4804	osk.exe	103
PID 3096 wrote to memory of 3960	3096	osk.exe	115
PID 3096 wrote to memory of 3960	3096	osk.exe	115
PID 3096 wrote to memory of 3960	3096	osk.exe	115
PID 3096 wrote to memory of 3960	3096	osk.exe	115
PID 3096 wrote to memory of 3960	3096	osk.exe	115
PID 3096 wrote to memory of 3164	3096	osk.exe	116
PID 3096 wrote to memory of 3164	3096	osk.exe	116
PID 3096 wrote to memory of 3164	3096	osk.exe	116

C:\Users\Admin\AppData\Local\Temp\ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ab97523c0c284868c08c9120d921ba06_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:3648
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemPropertiesHardware /tr "C:\Users\Admin\authfwcfg\osk.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2064

C:\Users\Admin\authfwcfg\osk.exe
C:\Users\Admin\authfwcfg\osk.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4804
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4764
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemPropertiesHardware /tr "C:\Users\Admin\authfwcfg\osk.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3856

C:\Users\Admin\authfwcfg\osk.exe
C:\Users\Admin\authfwcfg\osk.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3096
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3960
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemPropertiesHardware /tr "C:\Users\Admin\authfwcfg\osk.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3164

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Event Triggered Execution

1

T1546

Accessibility Features

1

T1546.008

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Event Triggered Execution

1

T1546

Accessibility Features

1

T1546.008

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\RegAsm.exe.log

Filesize
496B

MD5
5b4789d01bb4d7483b71e1a35bce6a8b

SHA1
de083f2131c9a763c0d1810c97a38732146cffbf

SHA256
e248cef9500ed6e0c9f99d72a2a6a36955a5f0cfc0725748ef25a733cc8282f6

SHA512
357e18ef30430e4b9cc4f2569b9735b1cd12f934c83162e4de78ac29ba9703b63ddb624ccc22afd5a5868f6e9d91a3c64581846abac22e9625f5b2e3d80b3ede

Download Submit
C:\Users\Admin\authfwcfg\osk.exe

Filesize
1.2MB

MD5
b29367b82a97546ea90a55e98e4e53cc

SHA1
4a1ab83243baa36dddad810f29ea5f686ec6ed23

SHA256
f4193c291b83a5e240f3cc34edb09bee9e5ce5578d83fe3fb27b39399ac33a12

SHA512
27a2408facaeed335e5575cc65c9a90afca28b77f073c60f966176ee77dafbff35319d27a99afc1f321a4759b3eaee6a8f589c7b8a6bcf6a327a4ba279e1358e

Download Submit
memory/3648-1-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3648-6-0x00000000737D2000-0x00000000737D3000-memory.dmp

Filesize
4KB

Download
memory/3648-7-0x00000000737D0000-0x0000000073D81000-memory.dmp

Filesize
5.7MB

Download
memory/3648-8-0x00000000737D0000-0x0000000073D81000-memory.dmp

Filesize
5.7MB

Download
memory/3648-11-0x00000000737D2000-0x00000000737D3000-memory.dmp

Filesize
4KB

Download
memory/3648-12-0x00000000737D0000-0x0000000073D81000-memory.dmp

Filesize
5.7MB

Download
memory/3648-13-0x00000000737D0000-0x0000000073D81000-memory.dmp

Filesize
5.7MB

Download
memory/4740-0-0x0000000002070000-0x0000000002071000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads