nanocore | d53818d8abf94f8cf94e2f5eec3dbc530ef8cb28f4dd3d3ebe57235669e1d86f

General

Target

388124944ca8922d055b3c8df0a519a7.exe
Size

784KB
MD5

388124944ca8922d055b3c8df0a519a7
SHA1

0750c4918bf40d5f37ad6fb43036b528c6863518
SHA256

d53818d8abf94f8cf94e2f5eec3dbc530ef8cb28f4dd3d3ebe57235669e1d86f
SHA512

39b1d2e88f48a0a17b49cac7c91c466997210121de8a0a049d5d2d63ea846f516253545af8cc0975d82d3ddad40280a5a857a23db6d1372eeba5bf9ceaf69c86
SSDEEP

12288:ZRHJA7PADFTPuIHoePgEybQoLe/m6hfBSah7Lrc:ZFJ6mbH45zGmOBSaF

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

nwokesienna.duckdns.org:4335

127.0.0.1:4335

Mutex

832ade64-22fc-4d1b-8667-18f9d137b5db

Attributes

activate_away_mode
false
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-06-12T17:40:51.008345636Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
4335
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
832ade64-22fc-4d1b-8667-18f9d137b5db
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
nwokesienna.duckdns.org
primary_dns_server
8.8.8.8
request_elevation
false
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
false
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

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"	388124944ca8922d055b3c8df0a519a7.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	388124944ca8922d055b3c8df0a519a7.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4216 set thread context of 5116	4216	388124944ca8922d055b3c8df0a519a7.exe	102

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	388124944ca8922d055b3c8df0a519a7.exe
File opened for modification	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	388124944ca8922d055b3c8df0a519a7.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
1068	schtasks.exe
4384	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5116	388124944ca8922d055b3c8df0a519a7.exe
Token: SeDebugPrivilege	5116	388124944ca8922d055b3c8df0a519a7.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 5116	4216	388124944ca8922d055b3c8df0a519a7.exe	102
PID 4216 wrote to memory of 5116	4216	388124944ca8922d055b3c8df0a519a7.exe	102
PID 4216 wrote to memory of 5116	4216	388124944ca8922d055b3c8df0a519a7.exe	102
PID 4216 wrote to memory of 5116	4216	388124944ca8922d055b3c8df0a519a7.exe	102
PID 4216 wrote to memory of 5116	4216	388124944ca8922d055b3c8df0a519a7.exe	102
PID 4216 wrote to memory of 5116	4216	388124944ca8922d055b3c8df0a519a7.exe	102
PID 4216 wrote to memory of 5116	4216	388124944ca8922d055b3c8df0a519a7.exe	102
PID 4216 wrote to memory of 5116	4216	388124944ca8922d055b3c8df0a519a7.exe	102
PID 5116 wrote to memory of 4384	5116	388124944ca8922d055b3c8df0a519a7.exe	106
PID 5116 wrote to memory of 4384	5116	388124944ca8922d055b3c8df0a519a7.exe	106
PID 5116 wrote to memory of 4384	5116	388124944ca8922d055b3c8df0a519a7.exe	106
PID 5116 wrote to memory of 1068	5116	388124944ca8922d055b3c8df0a519a7.exe	105
PID 5116 wrote to memory of 1068	5116	388124944ca8922d055b3c8df0a519a7.exe	105
PID 5116 wrote to memory of 1068	5116	388124944ca8922d055b3c8df0a519a7.exe	105

C:\Users\Admin\AppData\Local\Temp\388124944ca8922d055b3c8df0a519a7.exe
"C:\Users\Admin\AppData\Local\Temp\388124944ca8922d055b3c8df0a519a7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4216
- C:\Users\Admin\AppData\Local\Temp\388124944ca8922d055b3c8df0a519a7.exe
  "C:\Users\Admin\AppData\Local\Temp\388124944ca8922d055b3c8df0a519a7.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5116
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF7EE.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1068
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF7AE.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:4384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF7AE.tmp

Filesize
1KB

MD5
a9577c4611f3b445310069d36bbe043d

SHA1
6c18aaddade96d0e5578399c1d703f4f2545c08f

SHA256
2bc6373a802e3cd7ae325b17847e0fda1efa33950a222459f5daf92c60691e62

SHA512
ef638cf19105267450069304febfb99b277405588c4d3c6cf3cbd69d1dedbd25e35eab110182e84f96e86fba1a8ce145da353e28f6b041129051d885f8473609

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF7EE.tmp

Filesize
1KB

MD5
0339b45ef206f4becc88be0d65e24b9e

SHA1
6503a1851f4ccd8c80a31f96bd7ae40d962c9fad

SHA256
3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83

SHA512
c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551

Download Submit
memory/4216-5-0x00000000057F0000-0x00000000057FA000-memory.dmp

Filesize
40KB

Download
memory/4216-3-0x0000000005CB0000-0x0000000006254000-memory.dmp

Filesize
5.6MB

Download
memory/4216-0-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/4216-7-0x0000000006CB0000-0x0000000006D4C000-memory.dmp

Filesize
624KB

Download
memory/4216-6-0x0000000006BF0000-0x0000000006C0C000-memory.dmp

Filesize
112KB

Download
memory/4216-8-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/4216-9-0x0000000006E20000-0x0000000006E8E000-memory.dmp

Filesize
440KB

Download
memory/4216-10-0x00000000093D0000-0x0000000009408000-memory.dmp

Filesize
224KB

Download
memory/4216-2-0x00000000055F0000-0x0000000005682000-memory.dmp

Filesize
584KB

Download
memory/4216-4-0x0000000005870000-0x0000000005880000-memory.dmp

Filesize
64KB

Download
memory/4216-1-0x0000000000CC0000-0x0000000000D8A000-memory.dmp

Filesize
808KB

Download
memory/4216-15-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/5116-14-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/5116-24-0x00000000051F0000-0x00000000051FA000-memory.dmp

Filesize
40KB

Download
memory/5116-26-0x0000000005440000-0x000000000544A000-memory.dmp

Filesize
40KB

Download
memory/5116-25-0x0000000005420000-0x000000000543E000-memory.dmp

Filesize
120KB

Download
memory/5116-16-0x0000000005450000-0x0000000005460000-memory.dmp

Filesize
64KB

Download
memory/5116-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5116-27-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/5116-28-0x0000000005450000-0x0000000005460000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads