nanocore | 81630e871a0be893df07958d294ceda64577f410d372e56040a507ed089cc79a

General

Target

TBA.exe
Size

492KB
MD5

a8cd86a7698875d1eba6a5b03d24e61b
SHA1

3de1fbe8198880e2005b7e7d26e288d068165acd
SHA256

b3fd83d19a65a806d17f9c5245b94d7499e711f56814a2d1fe4ae62474315781
SHA512

dc29909c2602b7f97cb828c1f8f54d8fd0e8fb8c2e29aed94c7811ac03169853ab379b106c2883280b87243e4261df4f999d055f9326878728ab37d2680a6514

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

isiefi.ddns.net:9909

Mutex

1c87c2a2-27a9-4062-b41f-749df56c3f54

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-28T18:27:52.322706536Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
9909
default_group
latest
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
1c87c2a2-27a9-4062-b41f-749df56c3f54
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
isiefi.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:

MSBuild.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\DSL Service = "C:\\Program Files (x86)\\DSL Service\\dslsvc.exe"	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

TBA.exe

description pid process target process

PID 1180 set thread context of 1332 1180 TBA.exe MSBuild.exe

description	pid	process	target process
PID 1180 set thread context of 1332	1180	TBA.exe	MSBuild.exe

Drops file in Program Files directory 2 IoCs

Processes:

MSBuild.exe

description	ioc	process
File created	C:\Program Files (x86)\DSL Service\dslsvc.exe	MSBuild.exe
File opened for modification	C:\Program Files (x86)\DSL Service\dslsvc.exe	MSBuild.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
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

1960 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

TBA.exeMSBuild.exe

pid process

1180 TBA.exe
1332 MSBuild.exe
1332 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

TBA.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1180 TBA.exe
Token: SeDebugPrivilege 1332 MSBuild.exe

pid	process
1960	schtasks.exe

pid	process
1180	TBA.exe
1332	MSBuild.exe
1332	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1180	TBA.exe
Token: SeDebugPrivilege	1332	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

TBA.exe

description	pid	process	target process
PID 1180 wrote to memory of 1960	1180	TBA.exe	schtasks.exe
PID 1180 wrote to memory of 1960	1180	TBA.exe	schtasks.exe
PID 1180 wrote to memory of 1960	1180	TBA.exe	schtasks.exe
PID 1180 wrote to memory of 1960	1180	TBA.exe	schtasks.exe
PID 1180 wrote to memory of 1332	1180	TBA.exe	MSBuild.exe
PID 1180 wrote to memory of 1332	1180	TBA.exe	MSBuild.exe
PID 1180 wrote to memory of 1332	1180	TBA.exe	MSBuild.exe
PID 1180 wrote to memory of 1332	1180	TBA.exe	MSBuild.exe
PID 1180 wrote to memory of 1332	1180	TBA.exe	MSBuild.exe
PID 1180 wrote to memory of 1332	1180	TBA.exe	MSBuild.exe
PID 1180 wrote to memory of 1332	1180	TBA.exe	MSBuild.exe
PID 1180 wrote to memory of 1332	1180	TBA.exe	MSBuild.exe
PID 1180 wrote to memory of 1332	1180	TBA.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\TBA.exe
"C:\Users\Admin\AppData\Local\Temp\TBA.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1180

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sBjJNTRC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3E2A.tmp"
2⤵
- Creates scheduled task(s)
PID:1960

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"{path}"
2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1332

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

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\tmp3E2A.tmp
Filesize
1KB

MD5
e0b5a7adbfbeadac2570bc08168722f7

SHA1
1598d8c763dad50f1954cd8ad20df082cf97de11

SHA256
2728af9703485fec90409c07532c289a0780abd48d3a73c62394c2579d90e6e8

SHA512
f02ed812ccabddfa381326208e0346a7e7aebfa84f8d62cbf385866d3b0cd267e78010057845ec071bbb79f7ae4c5f615653e6b99d0d6817025aaff72eeb6cf6

Download Submit
memory/1180-55-0x0000000076C81000-0x0000000076C83000-memory.dmp

Filesize
8KB

Download
memory/1180-56-0x00000000004D0000-0x00000000004DA000-memory.dmp

Filesize
40KB

Download
memory/1180-57-0x0000000000990000-0x00000000009D0000-memory.dmp

Filesize
256KB

Download
memory/1180-54-0x0000000000B10000-0x0000000000B92000-memory.dmp

Filesize
520KB

Download
memory/1332-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1332-60-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1332-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1332-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1332-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1332-66-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1332-67-0x000000000041E792-mapping.dmp

Download
memory/1332-71-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1332-73-0x00000000003E0000-0x00000000003EA000-memory.dmp

Filesize
40KB

Download
memory/1332-74-0x00000000004D0000-0x00000000004EE000-memory.dmp

Filesize
120KB

Download
memory/1332-75-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download
memory/1332-76-0x0000000004D35000-0x0000000004D46000-memory.dmp

Filesize
68KB

Download
memory/1960-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads