nanocore | 1f8cb436e9d9a94582bad0513afce8426e6f472ec6ce9e53645445fb66857b46

General

Target

3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.exe
Size

681KB
MD5

3e49585dc7c9f0ec9fca24acdd652dea
SHA1

ca0c2409d39d3716bd48e4d077185fb93836441d
SHA256

1f8cb436e9d9a94582bad0513afce8426e6f472ec6ce9e53645445fb66857b46
SHA512

a44a2dd32675a9b463fe2b5c736afd6675e10105778d2392aa41c61e8e426791f52e0df184b27c964300430cec3236b5316493d830cbb4f6464924bb90d7fb8d
SSDEEP

12288:VQnoQsiIE9h7ukziWy9EUKFTZdXTZdHXTZdXTZ8g2eK0GRrrMW8beqs0XwZrJtL/:uoQslE9ESiWy9EFFTZdXTZdHXTZdXTZ3

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sulumanco.duckdns.org:155

Mutex

9f870457-c2f5-4793-97fc-017fd88f0903

Attributes

activate_away_mode
true
backup_connection_host
sulumanco.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-07-04T11:42:57.180983436Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
155
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
9f870457-c2f5-4793-97fc-017fd88f0903
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
sulumanco.duckdns.org
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 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

winrar.exe

pid process

1780 winrar.exe

pid	process
1780	winrar.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winrar.exe = "C:\\Users\\Admin\\AppData\\Roaming\\winrar.exe"	3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.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:

winrar.exe

description pid process target process

PID 1780 set thread context of 2484 1780 winrar.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 3 IoCs

Processes:

RegAsm.exe

pid process

2484 RegAsm.exe
2484 RegAsm.exe
2484 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

2484 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 2484 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 1780 set thread context of 2484	1780	winrar.exe	RegAsm.exe

pid	process
2484	RegAsm.exe
2484	RegAsm.exe
2484	RegAsm.exe

pid	process
2484	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	2484	RegAsm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.exewinrar.exe

description	pid	process	target process
PID 2708 wrote to memory of 1780	2708	3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.exe	winrar.exe
PID 2708 wrote to memory of 1780	2708	3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.exe	winrar.exe
PID 2708 wrote to memory of 1780	2708	3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.exe	winrar.exe
PID 1780 wrote to memory of 2484	1780	winrar.exe	RegAsm.exe
PID 1780 wrote to memory of 2484	1780	winrar.exe	RegAsm.exe
PID 1780 wrote to memory of 2484	1780	winrar.exe	RegAsm.exe
PID 1780 wrote to memory of 2484	1780	winrar.exe	RegAsm.exe
PID 1780 wrote to memory of 2484	1780	winrar.exe	RegAsm.exe
PID 1780 wrote to memory of 2484	1780	winrar.exe	RegAsm.exe
PID 1780 wrote to memory of 2484	1780	winrar.exe	RegAsm.exe
PID 1780 wrote to memory of 2484	1780	winrar.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3e49585dc7c9f0ec9fca24acdd652dea_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2708

C:\Users\Admin\AppData\Roaming\winrar.exe
"C:\Users\Admin\AppData\Roaming\winrar.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1780

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2484

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\winrar.exe
Filesize
681KB

MD5
3e49585dc7c9f0ec9fca24acdd652dea

SHA1
ca0c2409d39d3716bd48e4d077185fb93836441d

SHA256
1f8cb436e9d9a94582bad0513afce8426e6f472ec6ce9e53645445fb66857b46

SHA512
a44a2dd32675a9b463fe2b5c736afd6675e10105778d2392aa41c61e8e426791f52e0df184b27c964300430cec3236b5316493d830cbb4f6464924bb90d7fb8d

Download Submit
memory/1780-16-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/1780-21-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/1780-18-0x00000000030C0000-0x00000000030D8000-memory.dmp

Filesize
96KB

Download
memory/1780-17-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/2484-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2484-23-0x0000000005800000-0x0000000005892000-memory.dmp

Filesize
584KB

Download
memory/2484-22-0x0000000074A40000-0x00000000751F0000-memory.dmp

Filesize
7.7MB

Download
memory/2484-24-0x00000000057B0000-0x00000000057BA000-memory.dmp

Filesize
40KB

Download
memory/2484-26-0x0000000005A40000-0x0000000005A4A000-memory.dmp

Filesize
40KB

Download
memory/2484-27-0x0000000006550000-0x000000000656E000-memory.dmp

Filesize
120KB

Download
memory/2484-28-0x0000000006780000-0x000000000678A000-memory.dmp

Filesize
40KB

Download
memory/2484-29-0x0000000074A40000-0x00000000751F0000-memory.dmp

Filesize
7.7MB

Download
memory/2708-3-0x0000000005D60000-0x0000000006304000-memory.dmp

Filesize
5.6MB

Download
memory/2708-2-0x0000000005710000-0x00000000057AC000-memory.dmp

Filesize
624KB

Download
memory/2708-0-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

Filesize
4KB

Download
memory/2708-1-0x0000000000CE0000-0x0000000000D92000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads