nanocore | e5f63380b0e4ad92c5e1827b4e72e307ea1d0928ee8a223ee041495923acacac

General

Target

37644826d7e2bef8f742bd5b63a76ce5.exe
Size

328KB
MD5

37644826d7e2bef8f742bd5b63a76ce5
SHA1

7d9c9cab9e6dd190166580eec188358f1aa0f1c2
SHA256

e5f63380b0e4ad92c5e1827b4e72e307ea1d0928ee8a223ee041495923acacac
SHA512

c8116a34a775d7adf2eb6209d448e7a6443462041cf17a9af8b8bf1ac9fc2aea3f233a92f0c78dc2812ce8d08f6d0f8c9e1237d219892b4bec6b77fef4823c51

Score

10^/10

evasion trojan keylogger stealer spyware nanocore

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.140.53.9:9124

Mutex

abee0a6e-9120-44aa-a70c-1e32c9a07128

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-04-05T19:51:22.629259936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
9124
default_group
Wish
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
abee0a6e-9120-44aa-a70c-1e32c9a07128
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
185.140.53.9
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

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

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

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

37644826d7e2bef8f742bd5b63a76ce5.exe

description	pid	process	target process
PID 3920 wrote to memory of 3500	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	schtasks.exe
PID 3920 wrote to memory of 3500	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	schtasks.exe
PID 3920 wrote to memory of 3500	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	schtasks.exe
PID 3920 wrote to memory of 3328	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe
PID 3920 wrote to memory of 3328	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe
PID 3920 wrote to memory of 3328	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe
PID 3920 wrote to memory of 4028	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe
PID 3920 wrote to memory of 4028	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe
PID 3920 wrote to memory of 4028	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe
PID 3920 wrote to memory of 4028	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe
PID 3920 wrote to memory of 4028	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe
PID 3920 wrote to memory of 4028	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe
PID 3920 wrote to memory of 4028	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe
PID 3920 wrote to memory of 4028	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

37644826d7e2bef8f742bd5b63a76ce5.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 3920 37644826d7e2bef8f742bd5b63a76ce5.exe
Token: SeDebugPrivilege 4028 MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	3920	37644826d7e2bef8f742bd5b63a76ce5.exe
Token: SeDebugPrivilege	4028	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

37644826d7e2bef8f742bd5b63a76ce5.exeMSBuild.exe

pid	process
3920	37644826d7e2bef8f742bd5b63a76ce5.exe
3920	37644826d7e2bef8f742bd5b63a76ce5.exe
3920	37644826d7e2bef8f742bd5b63a76ce5.exe
4028	MSBuild.exe
4028	MSBuild.exe
4028	MSBuild.exe
4028	MSBuild.exe
4028	MSBuild.exe
4028	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

37644826d7e2bef8f742bd5b63a76ce5.exe

description pid process target process

PID 3920 set thread context of 4028 3920 37644826d7e2bef8f742bd5b63a76ce5.exe MSBuild.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

MSBuild.exe

pid process

4028 MSBuild.exe
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

3500 schtasks.exe

description	pid	process	target process
PID 3920 set thread context of 4028	3920	37644826d7e2bef8f742bd5b63a76ce5.exe	MSBuild.exe

pid	process
4028	MSBuild.exe

pid	process
3500	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\37644826d7e2bef8f742bd5b63a76ce5.exe
"C:\Users\Admin\AppData\Local\Temp\37644826d7e2bef8f742bd5b63a76ce5.exe"
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
PID:3920

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JOmRZHpjh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9A95.tmp"
2⤵
- Creates scheduled task(s)
PID:3500

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"{path}"
2⤵
PID:3328

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:4028

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\tmp9A95.tmp

Download Submit
memory/3500-0-0x0000000000000000-mapping.dmp

Download
memory/4028-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4028-3-0x000000000041E792-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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