nanocore | b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f

General

Target

b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe
Size

369KB
MD5

3cf7fcf808b6a1e2864fd53578e0b0c6
SHA1

73ca48fd744cc84a66b8844a441b84a85e473182
SHA256

b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f
SHA512

fe06f00a7aedef1a22e8691094654dbe0770eb6f8a39b23bbe76422a361c173efa1bf91d63968d6fc12574b6b047057f7abc1d920e1aa16f73684996f31ef605

Score

10^/10

evasion trojan keylogger stealer spyware nanocore

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.244.30.139:2121

annapro55.ddns.net:2121

Mutex

912d38da-67db-490c-9c4c-4b7c843ca9fd

Attributes

activate_away_mode
true
backup_connection_host
annapro55.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-27T00:27:31.421536436Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
2121
default_group
NEW CLIENTS
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
912d38da-67db-490c-9c4c-4b7c843ca9fd
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
185.244.30.139
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

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

3968 schtasks.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

MSBuild.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA MSBuild.exe
NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

pid	process
3968	schtasks.exe

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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe

description	pid	process	target process
PID 2960 wrote to memory of 3968	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	schtasks.exe
PID 2960 wrote to memory of 3968	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	schtasks.exe
PID 2960 wrote to memory of 3968	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	schtasks.exe
PID 2960 wrote to memory of 3844	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	MSBuild.exe
PID 2960 wrote to memory of 3844	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	MSBuild.exe
PID 2960 wrote to memory of 3844	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	MSBuild.exe
PID 2960 wrote to memory of 3844	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	MSBuild.exe
PID 2960 wrote to memory of 3844	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	MSBuild.exe
PID 2960 wrote to memory of 3844	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	MSBuild.exe
PID 2960 wrote to memory of 3844	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	MSBuild.exe
PID 2960 wrote to memory of 3844	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe

description	pid	process	target process
PID 2960 set thread context of 3844	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exeMSBuild.exe

description	pid	process
Token: SeDebugPrivilege	2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe
Token: SeDebugPrivilege	3844	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exeMSBuild.exe

pid process

2960 b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe
3844 MSBuild.exe
3844 MSBuild.exe
3844 MSBuild.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

MSBuild.exe

pid process

3844 MSBuild.exe

pid	process
2960	b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe
3844	MSBuild.exe
3844	MSBuild.exe
3844	MSBuild.exe

pid	process
3844	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe
"C:\Users\Admin\AppData\Local\Temp\b51cbad37376d459dcb4e24b04578a0f4f3b081feb2fb8a7bb1341a9dcc0815f.exe"
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
PID:2960

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xXhdhlVLYiH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7DC6.tmp"
2⤵
- Creates scheduled task(s)
PID:3968

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"{path}"
2⤵
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
PID:3844

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7DC6.tmp

Download Submit
memory/3844-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3844-3-0x000000000041E792-mapping.dmp

Download
memory/3968-0-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads