nanocore | 69bd7c9b3d1adafef81b742a3de8bb62fb090963eb1cf8fc0b9dbccd7af60b8e

General

Target

sample4.exe
Size

218KB
MD5

d14d43543f9122b24fb3d608103ac5d0
SHA1

c265c4e9f49e61e6de125d60daeb0de56c2b71cd
SHA256

69bd7c9b3d1adafef81b742a3de8bb62fb090963eb1cf8fc0b9dbccd7af60b8e
SHA512

1ea4874567bedf2e38ace873a344cd069d35cdedf9eb1c02014e375c2fd2c7a92fc060b83d8ba30628a8e9df7a031eee7ddfbabef55c633b9483213c7da4063f

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

mranubis.ddns.net:53896

127.0.0.1:53896

Mutex

43ee9fcc-5a8f-4789-aabd-da9ac4f835d3

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-10-06T02:37:49.747163736Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
53896
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
43ee9fcc-5a8f-4789-aabd-da9ac4f835d3
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\WAN Service = "C:\\Program Files (x86)\\WAN Service\\wansv.exe"	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

sample4.exe

description pid process target process

PID 3888 set thread context of 3504 3888 sample4.exe RegAsm.exe

description	pid	process	target process
PID 3888 set thread context of 3504	3888	sample4.exe	RegAsm.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\WAN Service\wansv.exe	RegAsm.exe
File created	C:\Program Files (x86)\WAN Service\wansv.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegAsm.exe

pid process

3504 RegAsm.exe
3504 RegAsm.exe
3504 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

3504 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 3504 RegAsm.exe

pid	process
3504	RegAsm.exe
3504	RegAsm.exe
3504	RegAsm.exe

pid	process
3504	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	3504	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

sample4.exe

description	pid	process	target process
PID 3888 wrote to memory of 3504	3888	sample4.exe	RegAsm.exe
PID 3888 wrote to memory of 3504	3888	sample4.exe	RegAsm.exe
PID 3888 wrote to memory of 3504	3888	sample4.exe	RegAsm.exe
PID 3888 wrote to memory of 3504	3888	sample4.exe	RegAsm.exe
PID 3888 wrote to memory of 3504	3888	sample4.exe	RegAsm.exe
PID 3888 wrote to memory of 3504	3888	sample4.exe	RegAsm.exe
PID 3888 wrote to memory of 3504	3888	sample4.exe	RegAsm.exe
PID 3888 wrote to memory of 3504	3888	sample4.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\sample4.exe
"C:\Users\Admin\AppData\Local\Temp\sample4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3888

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:3504

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/3504-14-0x0000000005380000-0x0000000005381000-memory.dmp

Filesize
4KB

Download
memory/3504-15-0x0000000005420000-0x0000000005421000-memory.dmp

Filesize
4KB

Download
memory/3504-19-0x0000000006220000-0x0000000006223000-memory.dmp

Filesize
12KB

Download
memory/3504-18-0x0000000005FD0000-0x0000000005FE9000-memory.dmp

Filesize
100KB

Download
memory/3504-17-0x00000000057D0000-0x00000000057D5000-memory.dmp

Filesize
20KB

Download
memory/3504-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3504-16-0x0000000005340000-0x0000000005341000-memory.dmp

Filesize
4KB

Download
memory/3504-13-0x00000000057E0000-0x00000000057E1000-memory.dmp

Filesize
4KB

Download
memory/3504-9-0x000000000041E792-mapping.dmp

Download
memory/3504-10-0x0000000073960000-0x000000007404E000-memory.dmp

Filesize
6.9MB

Download
memory/3888-2-0x0000000073A20000-0x000000007410E000-memory.dmp

Filesize
6.9MB

Download
memory/3888-3-0x0000000000BB0000-0x0000000000BB1000-memory.dmp

Filesize
4KB

Download
memory/3888-7-0x00000000054C0000-0x00000000054C1000-memory.dmp

Filesize
4KB

Download
memory/3888-6-0x0000000005460000-0x0000000005496000-memory.dmp

Filesize
216KB

Download
memory/3888-5-0x00000000053E0000-0x00000000053E1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads