nanocore | 984728dca6dd3d654ed7c9cb141bc6f11a92b9fee7872b75bd5fd370475c6ec4

General

Target

ZFE8ZFED.exe
Size

363KB
MD5

a95d2f1d08441c3fb0cba884f8daaa39
SHA1

14a46985fccf6beeab446a24313a545e83413f4d
SHA256

eeb8c3abc5285adfd129d20f321f2502d1125f0a0131644fe82c931cc2a5183b
SHA512

b4fb4b42de18fe0a5daa0ddd5a683edb2e909837f5ca2eebd14ebf3f732411ba375efa59dae94bbd619ec44ca7c5c3655fa30ab5032cc599661da79a33f1d17b

Score

10^/10

nanocore evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

osharay.ddns.net:49291

127.0.0.1:49291

Mutex

e44f7ace-2a43-4abd-852f-0d029d25e336

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-26T12:50:12.399676336Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
49291
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
e44f7ace-2a43-4abd-852f-0d029d25e336
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
osharay.ddns.net
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

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1788-56-0x00000000009A0000-0x00000000009E0000-memory.dmp	rezer0

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

ZFE8ZFED.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA ZFE8ZFED.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ZFE8ZFED.exe

description pid process target process

PID 1788 set thread context of 316 1788 ZFE8ZFED.exe ZFE8ZFED.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

ZFE8ZFED.exe

pid process

316 ZFE8ZFED.exe
316 ZFE8ZFED.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

ZFE8ZFED.exe

pid process

316 ZFE8ZFED.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

ZFE8ZFED.exe

description pid process

Token: SeDebugPrivilege 316 ZFE8ZFED.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	ZFE8ZFED.exe

description	pid	process	target process
PID 1788 set thread context of 316	1788	ZFE8ZFED.exe	ZFE8ZFED.exe

pid	process
316	ZFE8ZFED.exe
316	ZFE8ZFED.exe

pid	process
316	ZFE8ZFED.exe

description	pid	process
Token: SeDebugPrivilege	316	ZFE8ZFED.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

ZFE8ZFED.exe

description	pid	process	target process
PID 1788 wrote to memory of 316	1788	ZFE8ZFED.exe	ZFE8ZFED.exe
PID 1788 wrote to memory of 316	1788	ZFE8ZFED.exe	ZFE8ZFED.exe
PID 1788 wrote to memory of 316	1788	ZFE8ZFED.exe	ZFE8ZFED.exe
PID 1788 wrote to memory of 316	1788	ZFE8ZFED.exe	ZFE8ZFED.exe
PID 1788 wrote to memory of 316	1788	ZFE8ZFED.exe	ZFE8ZFED.exe
PID 1788 wrote to memory of 316	1788	ZFE8ZFED.exe	ZFE8ZFED.exe
PID 1788 wrote to memory of 316	1788	ZFE8ZFED.exe	ZFE8ZFED.exe
PID 1788 wrote to memory of 316	1788	ZFE8ZFED.exe	ZFE8ZFED.exe
PID 1788 wrote to memory of 316	1788	ZFE8ZFED.exe	ZFE8ZFED.exe

C:\Users\Admin\AppData\Local\Temp\ZFE8ZFED.exe
"C:\Users\Admin\AppData\Local\Temp\ZFE8ZFED.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1788

C:\Users\Admin\AppData\Local\Temp\ZFE8ZFED.exe
"{path}"
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:316

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/316-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/316-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/316-72-0x00000000004E0000-0x00000000004EA000-memory.dmp

Filesize
40KB

Download
memory/316-57-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/316-58-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/316-60-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/316-71-0x00000000003E0000-0x00000000003FE000-memory.dmp

Filesize
120KB

Download
memory/316-64-0x000000000041E792-mapping.dmp

Download
memory/316-70-0x00000000003D0000-0x00000000003DA000-memory.dmp

Filesize
40KB

Download
memory/316-66-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/316-68-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/316-69-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

Filesize
8KB

Download
memory/1788-54-0x0000000000C90000-0x0000000000CF2000-memory.dmp

Filesize
392KB

Download
memory/1788-55-0x00000000002C0000-0x00000000002D2000-memory.dmp

Filesize
72KB

Download
memory/1788-56-0x00000000009A0000-0x00000000009E0000-memory.dmp

Filesize
256KB

Download

Analysis

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