nanocore | 3d6582a55706bebac0c7cb5ee60ede652456501a3b08aae48723227809ce3fc9

General

Target

83194808dedca5774eb592aa86273131_JaffaCakes118.exe
Size

1.2MB
MD5

83194808dedca5774eb592aa86273131
SHA1

af499f573d3c7dd22a5c14158d79f544d6803285
SHA256

3d6582a55706bebac0c7cb5ee60ede652456501a3b08aae48723227809ce3fc9
SHA512

3b20f5c293d9eaa1c7d47667afb25999e6daacb3fe22b4b14e19fefc029cd7a3ec2b0fb715f252b9db5d951d0b98985da9fe7b6347a555c78a283a23245a6f45
SSDEEP

24576:Fu6Jx3O0c+JY5UZ+XC0kGso/Wa9BBUe+ikjfeV6rWY:HI0c++OCvkGsUWa+eVFY

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

ibrak.ddns.net:5552

Mutex

cb9ac110-8fab-472c-be79-6e01d3872258

Attributes

activate_away_mode
true
backup_connection_host
ibrak.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-09-19T17:49:22.454245236Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5552
default_group
Auto
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
cb9ac110-8fab-472c-be79-6e01d3872258
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
ibrak.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

Processes:

83194808dedca5774eb592aa86273131_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	83194808dedca5774eb592aa86273131_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe"	RegAsm.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RegAsm.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

83194808dedca5774eb592aa86273131_JaffaCakes118.exe

description pid process target process

PID 3248 set thread context of 3972 3248 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RegAsm.exe

description	pid	process	target process
PID 3248 set thread context of 3972	3248	83194808dedca5774eb592aa86273131_JaffaCakes118.exe	RegAsm.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

description	ioc	process
File created	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	RegAsm.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2668 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegAsm.exe

pid process

3972 RegAsm.exe
3972 RegAsm.exe
3972 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

3972 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 3972 RegAsm.exe

pid	process
2668	schtasks.exe

pid	process
3972	RegAsm.exe
3972	RegAsm.exe
3972	RegAsm.exe

pid	process
3972	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	3972	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

83194808dedca5774eb592aa86273131_JaffaCakes118.exe

description	pid	process	target process
PID 3248 wrote to memory of 2668	3248	83194808dedca5774eb592aa86273131_JaffaCakes118.exe	schtasks.exe
PID 3248 wrote to memory of 2668	3248	83194808dedca5774eb592aa86273131_JaffaCakes118.exe	schtasks.exe
PID 3248 wrote to memory of 2668	3248	83194808dedca5774eb592aa86273131_JaffaCakes118.exe	schtasks.exe
PID 3248 wrote to memory of 3972	3248	83194808dedca5774eb592aa86273131_JaffaCakes118.exe	RegAsm.exe
PID 3248 wrote to memory of 3972	3248	83194808dedca5774eb592aa86273131_JaffaCakes118.exe	RegAsm.exe
PID 3248 wrote to memory of 3972	3248	83194808dedca5774eb592aa86273131_JaffaCakes118.exe	RegAsm.exe
PID 3248 wrote to memory of 3972	3248	83194808dedca5774eb592aa86273131_JaffaCakes118.exe	RegAsm.exe
PID 3248 wrote to memory of 3972	3248	83194808dedca5774eb592aa86273131_JaffaCakes118.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\83194808dedca5774eb592aa86273131_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\83194808dedca5774eb592aa86273131_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3248

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\SysWOW64\schtasks.exe" /create /tn /tr "C:\Users\Admin\\.exe" /sc minute /mo 1 /F
2⤵
- Creates scheduled task(s)
PID:2668

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
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:3972

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3936 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:664

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/3248-1-0x0000000000DB0000-0x0000000000DB1000-memory.dmp

Filesize
4KB

Download
memory/3972-2-0x0000000000350000-0x0000000000388000-memory.dmp

Filesize
224KB

Download
memory/3972-7-0x0000000072F12000-0x0000000072F13000-memory.dmp

Filesize
4KB

Download
memory/3972-8-0x0000000072F10000-0x00000000734C1000-memory.dmp

Filesize
5.7MB

Download
memory/3972-9-0x0000000072F10000-0x00000000734C1000-memory.dmp

Filesize
5.7MB

Download
memory/3972-12-0x0000000072F12000-0x0000000072F13000-memory.dmp

Filesize
4KB

Download
memory/3972-13-0x0000000072F10000-0x00000000734C1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads