nanocore | 290fb785e3b59196b2c3d474822f7dd18eaa9d13526c19b9f5dfd51ba3cb4756

General

Target

673427Cd1.exe
Size

416KB
MD5

add3457d0c39229a423260609e05499a
SHA1

e871c52d22998ce1837f62458fc26f0b9e93e774
SHA256

290fb785e3b59196b2c3d474822f7dd18eaa9d13526c19b9f5dfd51ba3cb4756
SHA512

6e77c08af2c5c78d8af18572a4667a4a4618400c12aabd459844a792c4526cb00555a5d23a42ffc0cb41d1adf57a8dc7511f0a25969876c0a064d8d3e76e5e75

Score

10^/10

evasion trojan keylogger stealer spyware nanocore

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

eventmulla.ddns.net:6543

Mutex

f580f112-9bc3-44ee-b5d4-3dc367e2d9b7

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-04-04T21:29:27.514527536Z
bypass_user_account_control
false
bypass_user_account_control_data
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
6543
default_group
eventmulla
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
f580f112-9bc3-44ee-b5d4-3dc367e2d9b7
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
eventmulla.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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

MSBuild.exe

pid process

1832 MSBuild.exe
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1136 schtasks.exe
1756 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
1832	MSBuild.exe

pid	process
1136	schtasks.exe
1756	schtasks.exe

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

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

673427Cd1.exeMSBuild.exe

description	pid	process	target process
PID 1092 wrote to memory of 1136	1092	673427Cd1.exe	schtasks.exe
PID 1092 wrote to memory of 1136	1092	673427Cd1.exe	schtasks.exe
PID 1092 wrote to memory of 1136	1092	673427Cd1.exe	schtasks.exe
PID 1092 wrote to memory of 1136	1092	673427Cd1.exe	schtasks.exe
PID 1092 wrote to memory of 1840	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1840	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1840	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1840	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1832	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1832	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1832	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1832	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1832	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1832	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1832	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1832	1092	673427Cd1.exe	MSBuild.exe
PID 1092 wrote to memory of 1832	1092	673427Cd1.exe	MSBuild.exe
PID 1832 wrote to memory of 1756	1832	MSBuild.exe	schtasks.exe
PID 1832 wrote to memory of 1756	1832	MSBuild.exe	schtasks.exe
PID 1832 wrote to memory of 1756	1832	MSBuild.exe	schtasks.exe
PID 1832 wrote to memory of 1756	1832	MSBuild.exe	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

673427Cd1.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1092 673427Cd1.exe
Token: SeDebugPrivilege 1832 MSBuild.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

673427Cd1.exeMSBuild.exe

pid process

1092 673427Cd1.exe
1092 673427Cd1.exe
1832 MSBuild.exe
1832 MSBuild.exe
1832 MSBuild.exe
1832 MSBuild.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

673427Cd1.exe

description pid process target process

PID 1092 set thread context of 1832 1092 673427Cd1.exe MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1092	673427Cd1.exe
Token: SeDebugPrivilege	1832	MSBuild.exe

pid	process
1092	673427Cd1.exe
1092	673427Cd1.exe
1832	MSBuild.exe
1832	MSBuild.exe
1832	MSBuild.exe
1832	MSBuild.exe

description	pid	process	target process
PID 1092 set thread context of 1832	1092	673427Cd1.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\673427Cd1.exe
"C:\Users\Admin\AppData\Local\Temp\673427Cd1.exe"
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
PID:1092

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JzCmGHwrvB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3B0C.tmp"
2⤵
- Creates scheduled task(s)
PID:1136

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"{path}"
2⤵
PID:1840

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"{path}"
2⤵
- Suspicious behavior: GetForegroundWindowSpam
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
PID:1832

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "WPA Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp43D2.tmp"
3⤵
- Creates scheduled task(s)
PID:1756

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3B0C.tmp

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp43D2.tmp

Download Submit
memory/1136-0-0x0000000000000000-mapping.dmp

Download
memory/1756-6-0x0000000000000000-mapping.dmp

Download
memory/1832-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1832-3-0x000000000041E792-mapping.dmp

Download
memory/1832-4-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1832-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads