nanocore | a44e9e5a6470bb6d889366581e7f99eebc60099ff0fe7b7a6e39b38f7315cb0f

General

Target

27-sample1.exe
Size

218KB
MD5

023f76279542b2dc295888cd45cdb758
SHA1

d268723e58f5b224a20ff902a048a4491a9d7e0b
SHA256

a44e9e5a6470bb6d889366581e7f99eebc60099ff0fe7b7a6e39b38f7315cb0f
SHA512

51aca2b09ae306c9cacf31fe4dfd131fff004620c8957f8099b4c11adae057ed2f199ec556033832135d14c7f9ff2863bfd9683f37af66d780e57e3368635632

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

mranubis.ddns.net:54984

127.0.0.1:54984

Mutex

c91cbec2-cb9b-41dc-905a-a9a1fe60b360

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-10-08T22:18:02.201490936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
54984
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
c91cbec2-cb9b-41dc-905a-a9a1fe60b360
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
mranubis.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegAsm.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

27-sample1.exe

description pid process target process

PID 640 set thread context of 3712 640 27-sample1.exe RegAsm.exe

description	pid	process	target process
PID 640 set thread context of 3712	640	27-sample1.exe	RegAsm.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

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

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegAsm.exe

pid process

3712 RegAsm.exe
3712 RegAsm.exe
3712 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

3712 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 3712 RegAsm.exe

pid	process
3712	RegAsm.exe
3712	RegAsm.exe
3712	RegAsm.exe

pid	process
3712	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	3712	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

27-sample1.exe

description	pid	process	target process
PID 640 wrote to memory of 3712	640	27-sample1.exe	RegAsm.exe
PID 640 wrote to memory of 3712	640	27-sample1.exe	RegAsm.exe
PID 640 wrote to memory of 3712	640	27-sample1.exe	RegAsm.exe
PID 640 wrote to memory of 3712	640	27-sample1.exe	RegAsm.exe
PID 640 wrote to memory of 3712	640	27-sample1.exe	RegAsm.exe
PID 640 wrote to memory of 3712	640	27-sample1.exe	RegAsm.exe
PID 640 wrote to memory of 3712	640	27-sample1.exe	RegAsm.exe
PID 640 wrote to memory of 3712	640	27-sample1.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\27-sample1.exe
"C:\Users\Admin\AppData\Local\Temp\27-sample1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:640

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:3712

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/640-2-0x0000000073DC0000-0x00000000744AE000-memory.dmp

Filesize
6.9MB

Download
memory/640-3-0x0000000000BF0000-0x0000000000BF1000-memory.dmp

Filesize
4KB

Download
memory/640-5-0x00000000054D0000-0x00000000054D1000-memory.dmp

Filesize
4KB

Download
memory/640-6-0x00000000016B0000-0x00000000016E6000-memory.dmp

Filesize
216KB

Download
memory/640-7-0x0000000002FB0000-0x0000000002FB1000-memory.dmp

Filesize
4KB

Download
memory/3712-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3712-9-0x000000000041E792-mapping.dmp

Download
memory/3712-10-0x0000000073D20000-0x000000007440E000-memory.dmp

Filesize
6.9MB

Download
memory/3712-13-0x0000000005A40000-0x0000000005A41000-memory.dmp

Filesize
4KB

Download
memory/3712-14-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

Download
memory/3712-15-0x00000000055E0000-0x00000000055E1000-memory.dmp

Filesize
4KB

Download
memory/3712-16-0x00000000054F0000-0x00000000054F1000-memory.dmp

Filesize
4KB

Download
memory/3712-17-0x0000000005850000-0x0000000005855000-memory.dmp

Filesize
20KB

Download
memory/3712-18-0x00000000061C0000-0x00000000061D9000-memory.dmp

Filesize
100KB

Download
memory/3712-19-0x00000000061E0000-0x00000000061E3000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads