nanocore | 8a6c0f3be2ae85edd94a0aa130ebd98ea323cf84668992de29a5eafe898188ea

General

Target

JaffaCakes118_375c48ce666da3e9b11e9317cb94c190.vbs
Size

1.3MB
MD5

375c48ce666da3e9b11e9317cb94c190
SHA1

65a878064405489a8ed89ce5980a1726d164f4d0
SHA256

8a6c0f3be2ae85edd94a0aa130ebd98ea323cf84668992de29a5eafe898188ea
SHA512

d75508481f5f904255648935fc7f479937f0175a78d3943bbb4346786e5b40342d9b7a1e16409e978bd8e102cb748490bafba86cc07e197317070ec02aec2e5f
SSDEEP

768:MiBZ/5SfN0GIW6tKVSPB6Rs50S4zit70H9MsDgz9gZ64x/ijW6VVy1rG28FrOk3w:WN

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

techmorgan.fr:54984

127.0.0.1:54984

Mutex

03f71578-b48c-47c4-a3b5-de07d27123ef

Attributes

activate_away_mode
false
backup_connection_host
127.0.0.1
backup_dns_server
buffer_size
65535
build_time
2021-07-29T10:57:48.257119736Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
54984
default_group
Default
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
03f71578-b48c-47c4-a3b5-de07d27123ef
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
techmorgan.fr
primary_dns_server
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
Nanocore family
nanocore

Executes dropped EXE 1 IoCs

pid	Process
3276	57yhyh.ExE

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\SMTP Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe"	57yhyh.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	57yhyh.ExE

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	57yhyh.ExE
File created	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	57yhyh.ExE

System Location Discovery: System Language Discovery 1 TTPs 1 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	57yhyh.ExE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3276	57yhyh.ExE
3276	57yhyh.ExE
3276	57yhyh.ExE
3276	57yhyh.ExE
3276	57yhyh.ExE
3276	57yhyh.ExE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3276	57yhyh.ExE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3276	57yhyh.ExE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4072 wrote to memory of 3276	4072	WScript.exe	83
PID 4072 wrote to memory of 3276	4072	WScript.exe	83
PID 4072 wrote to memory of 3276	4072	WScript.exe	83

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_375c48ce666da3e9b11e9317cb94c190.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:4072
- C:\Users\Admin\AppData\Local\Temp\57yhyh.ExE
  C:\Users\Admin\AppData\Local\Temp\57yhyh.ExE
  2⤵
  - 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:3276

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

C:\Users\Admin\AppData\Local\Temp\57yhyh.ExE

Filesize
210KB

MD5
a6c6f81566d21c85dc94f2625ff60e68

SHA1
7f0e67caca2b706b5bdf03a9f5cb1c9562178ab1

SHA256
63cf49fc2dfaad63b9f79a7a75c8dfa1302a00156ad46dbc05ffa97d3a42acf6

SHA512
447d717c0e6757b61c855066ee0ce8600f3e6932b6dd54dc5e30bcd43d930c642c14e74eaa841af5145b067af9d9e7709c1f349a66e81706b7a74128c60afabc

Download Submit
memory/3276-4-0x0000000074842000-0x0000000074843000-memory.dmp

Filesize
4KB

Download
memory/3276-5-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/3276-6-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/3276-9-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/3276-10-0x0000000074842000-0x0000000074843000-memory.dmp

Filesize
4KB

Download
memory/3276-11-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/3276-12-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/3276-13-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads