nanocore | a84ea5c3902e7e6d2d4ace96b238e43d79054295b18426a73bfb9f5877f532ca

General

Target

450d8c68e01b7c086e5d195a594a5ad4_JaffaCakes118.exe
Size

260KB
MD5

450d8c68e01b7c086e5d195a594a5ad4
SHA1

06fffef49449302cba0f659ae6221150e3cfa163
SHA256

a84ea5c3902e7e6d2d4ace96b238e43d79054295b18426a73bfb9f5877f532ca
SHA512

f46bd8231342a6ee2ed0709f6d08d00f6dd92e130214b2f7fcbfcbe9d1acb92709d96a199284f634826e3d65b4c4b29b6d3290b42cfc20cd06d2f91c9e5ed509
SSDEEP

6144:QAeZHGAD/E/iG5UzMh2msfgB9mnkDO9L:zeYA4/icSRmagmn4O9

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

3495735yi.zapto.org:1604

127.0.0.1:1604

Mutex

f2e2838b-8e37-4b10-9388-ba08fbe83deb

Attributes

activate_away_mode
false
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2017-05-12T12:39:20.884264436Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1604
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
f2e2838b-8e37-4b10-9388-ba08fbe83deb
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
3495735yi.zapto.org
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 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

450d8c68e01b7c086e5d195a594a5ad4_JaffaCakes118.exemyttxns.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	450d8c68e01b7c086e5d195a594a5ad4_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	myttxns.exe

Executes dropped EXE 1 IoCs

Processes:

myttxns.exe

pid process

2072 myttxns.exe

pid	process
2072	myttxns.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\DHCP Subsystem = "C:\\Program Files (x86)\\DHCP Subsystem\\dhcpss.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:

myttxns.exe

description pid process target process

PID 2072 set thread context of 1920 2072 myttxns.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 2072 set thread context of 1920	2072	myttxns.exe	RegAsm.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

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

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

RegAsm.exemyttxns.exe

pid	process
1920	RegAsm.exe
1920	RegAsm.exe
1920	RegAsm.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe
2072	myttxns.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

1920 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegAsm.exemyttxns.exe

description pid process

Token: SeDebugPrivilege 1920 RegAsm.exe
Token: SeDebugPrivilege 2072 myttxns.exe

description	pid	process
Token: SeDebugPrivilege	1920	RegAsm.exe
Token: SeDebugPrivilege	2072	myttxns.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

450d8c68e01b7c086e5d195a594a5ad4_JaffaCakes118.exemyttxns.execmd.exe

description	pid	process	target process
PID 3652 wrote to memory of 2072	3652	450d8c68e01b7c086e5d195a594a5ad4_JaffaCakes118.exe	myttxns.exe
PID 3652 wrote to memory of 2072	3652	450d8c68e01b7c086e5d195a594a5ad4_JaffaCakes118.exe	myttxns.exe
PID 3652 wrote to memory of 2072	3652	450d8c68e01b7c086e5d195a594a5ad4_JaffaCakes118.exe	myttxns.exe
PID 2072 wrote to memory of 716	2072	myttxns.exe	cmd.exe
PID 2072 wrote to memory of 716	2072	myttxns.exe	cmd.exe
PID 2072 wrote to memory of 716	2072	myttxns.exe	cmd.exe
PID 716 wrote to memory of 4084	716	cmd.exe	reg.exe
PID 716 wrote to memory of 4084	716	cmd.exe	reg.exe
PID 716 wrote to memory of 4084	716	cmd.exe	reg.exe
PID 2072 wrote to memory of 1920	2072	myttxns.exe	RegAsm.exe
PID 2072 wrote to memory of 1920	2072	myttxns.exe	RegAsm.exe
PID 2072 wrote to memory of 1920	2072	myttxns.exe	RegAsm.exe
PID 2072 wrote to memory of 1920	2072	myttxns.exe	RegAsm.exe
PID 2072 wrote to memory of 1920	2072	myttxns.exe	RegAsm.exe
PID 2072 wrote to memory of 1920	2072	myttxns.exe	RegAsm.exe
PID 2072 wrote to memory of 1920	2072	myttxns.exe	RegAsm.exe
PID 2072 wrote to memory of 1920	2072	myttxns.exe	RegAsm.exe
PID 2072 wrote to memory of 3728	2072	myttxns.exe	msbuild.exe
PID 2072 wrote to memory of 3728	2072	myttxns.exe	msbuild.exe
PID 2072 wrote to memory of 3728	2072	myttxns.exe	msbuild.exe

C:\Users\Admin\AppData\Local\Temp\450d8c68e01b7c086e5d195a594a5ad4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\450d8c68e01b7c086e5d195a594a5ad4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3652

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\ScreenToGif\myttxns.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\ScreenToGif\myttxns.exe" -n
2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2072

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v "Load" /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\ScreenToGif\myttxns.exe" /f
3⤵
- Suspicious use of WriteProcessMemory
PID:716

C:\Windows\SysWOW64\reg.exe
reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v "Load" /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\ScreenToGif\myttxns.exe" /f
4⤵
PID:4084

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
3⤵
- 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:1920

C:\Windows\Microsoft.NET\Framework\v2.0.50727\msbuild.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\msbuild.exe"
3⤵
PID:3728

Network

MITRE ATT&CK Matrix ATT&CK v13

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

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

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\ScreenToGif\myttxns.exe
Filesize
260KB

MD5
450d8c68e01b7c086e5d195a594a5ad4

SHA1
06fffef49449302cba0f659ae6221150e3cfa163

SHA256
a84ea5c3902e7e6d2d4ace96b238e43d79054295b18426a73bfb9f5877f532ca

SHA512
f46bd8231342a6ee2ed0709f6d08d00f6dd92e130214b2f7fcbfcbe9d1acb92709d96a199284f634826e3d65b4c4b29b6d3290b42cfc20cd06d2f91c9e5ed509

Download Submit
memory/1920-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2072-18-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/2072-19-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/2072-23-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/3652-0-0x0000000075582000-0x0000000075583000-memory.dmp

Filesize
4KB

Download
memory/3652-1-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/3652-2-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/3652-17-0x0000000075580000-0x0000000075B31000-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