nanocore | 8802fb63419902bbd4f9679966f483c755f503b2f0a4345b59b1669a9c025a73

Analysis

max time kernel
118s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
26-06-2024 02:40

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General

Target

b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
Size

600KB
MD5

5a42e2442b79943419bf0e39ad7be827
SHA1

1a4a5d7594fbdfb3189915502a63c801a2180389
SHA256

b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a
SHA512

f18e569b0fc487b77fbe55cb7beadfac99723d5ab0111d03e62bee1cb01db3b8bd6f97a050f95768f77f5eaddf78bf08f7f12ba4ffa52bd7e8e55a60bb4167ed
SSDEEP

12288:U9PcfpbzzGwWjZK2P5VQiYwhKrmXLZNa8pKp1wFqexdCZMxZ3Q:viDj7xVQi9hOmXowFTCZQtQ

Score

10^/10

nanocore execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

newsddawork.3utilities.com:1620

maxlogs.webhop.me:1620

Mutex

1fa46b72-10f9-4da3-bc15-84dde165706d

Attributes

activate_away_mode
true
backup_connection_host
maxlogs.webhop.me
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2024-02-17T03:41:10.727034736Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1620
default_group
NewBin
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
1fa46b72-10f9-4da3-bc15-84dde165706d
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
newsddawork.3utilities.com
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
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2572 powershell.exe
Adds Run key to start application 2 TTPs 1 IoCs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Processes:

MSBuild.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe" MSBuild.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe

description pid process target process

PID 2932 set thread context of 2448 2932 b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe MSBuild.exe
Drops file in Program Files directory 2 IoCs

Processes:

MSBuild.exe

description ioc process

File created C:\Program Files (x86)\TCP Subsystem\tcpss.exe MSBuild.exe
File opened for modification C:\Program Files (x86)\TCP Subsystem\tcpss.exe MSBuild.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

2812 schtasks.exe

pid	process
2572	powershell.exe

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

description	pid	process	target process
PID 2932 set thread context of 2448	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe

description	ioc	process
File created	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	MSBuild.exe
File opened for modification	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	MSBuild.exe

pid	process
2812	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exepowershell.exeMSBuild.exe

pid	process
2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
2572	powershell.exe
2448	MSBuild.exe
2448	MSBuild.exe
2448	MSBuild.exe
2448	MSBuild.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

MSBuild.exe

pid process

2448 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exepowershell.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 2932 b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
Token: SeDebugPrivilege 2572 powershell.exe
Token: SeDebugPrivilege 2448 MSBuild.exe

pid	process
2448	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
Token: SeDebugPrivilege	2572	powershell.exe
Token: SeDebugPrivilege	2448	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe

description	pid	process	target process
PID 2932 wrote to memory of 2572	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	powershell.exe
PID 2932 wrote to memory of 2572	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	powershell.exe
PID 2932 wrote to memory of 2572	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	powershell.exe
PID 2932 wrote to memory of 2572	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	powershell.exe
PID 2932 wrote to memory of 2812	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	schtasks.exe
PID 2932 wrote to memory of 2812	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	schtasks.exe
PID 2932 wrote to memory of 2812	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	schtasks.exe
PID 2932 wrote to memory of 2812	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	schtasks.exe
PID 2932 wrote to memory of 2448	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2932 wrote to memory of 2448	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2932 wrote to memory of 2448	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2932 wrote to memory of 2448	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2932 wrote to memory of 2448	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2932 wrote to memory of 2448	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2932 wrote to memory of 2448	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2932 wrote to memory of 2448	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2932 wrote to memory of 2448	2932	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
"C:\Users\Admin\AppData\Local\Temp\b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2932

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zzTmYAoKh.exe"
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2572

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zzTmYAoKh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp311E.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2812

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.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:2448

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp311E.tmp
Filesize
1KB

MD5
408af4db7221cf0e486909a3251725f8

SHA1
facf550e8ba10fb34c194811159af470f564dba9

SHA256
b3a7b37e1758b292828bf9889337345fd4bc1b245b623f544c094e8efb485468

SHA512
03e8c890d30ee2fcfac4c7d7f9c347d5147afa6389070f0fa85da789217fcc7ec68fe9efbcf443eb567292fa39d33fe47c6fccac3d7d87260b2690c530857d37

Download Submit
memory/2448-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2448-46-0x0000000000B80000-0x0000000000BAE000-memory.dmp

Filesize
184KB

Download
memory/2448-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2448-45-0x0000000000720000-0x000000000072E000-memory.dmp

Filesize
56KB

Download
memory/2448-44-0x0000000000630000-0x0000000000644000-memory.dmp

Filesize
80KB

Download
memory/2448-36-0x00000000004B0000-0x00000000004C2000-memory.dmp

Filesize
72KB

Download
memory/2448-37-0x0000000000510000-0x000000000052A000-memory.dmp

Filesize
104KB

Download
memory/2448-38-0x0000000000530000-0x000000000053E000-memory.dmp

Filesize
56KB

Download
memory/2448-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2448-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2448-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2448-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2448-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2448-23-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2448-47-0x0000000000880000-0x0000000000894000-memory.dmp

Filesize
80KB

Download
memory/2448-42-0x0000000000590000-0x00000000005A4000-memory.dmp

Filesize
80KB

Download
memory/2448-43-0x0000000000620000-0x0000000000630000-memory.dmp

Filesize
64KB

Download
memory/2448-31-0x00000000003D0000-0x00000000003DA000-memory.dmp

Filesize
40KB

Download
memory/2448-32-0x00000000003E0000-0x00000000003FE000-memory.dmp

Filesize
120KB

Download
memory/2448-33-0x0000000000440000-0x000000000044A000-memory.dmp

Filesize
40KB

Download
memory/2448-39-0x0000000000550000-0x0000000000562000-memory.dmp

Filesize
72KB

Download
memory/2448-40-0x0000000000560000-0x000000000056C000-memory.dmp

Filesize
48KB

Download
memory/2448-41-0x0000000000580000-0x000000000058E000-memory.dmp

Filesize
56KB

Download
memory/2932-7-0x00000000053C0000-0x000000000543A000-memory.dmp

Filesize
488KB

Download
memory/2932-2-0x0000000074AA0000-0x000000007518E000-memory.dmp

Filesize
6.9MB

Download
memory/2932-1-0x00000000000F0000-0x000000000018C000-memory.dmp

Filesize
624KB

Download
memory/2932-28-0x0000000074AA0000-0x000000007518E000-memory.dmp

Filesize
6.9MB

Download
memory/2932-6-0x00000000007E0000-0x00000000007EC000-memory.dmp

Filesize
48KB

Download
memory/2932-5-0x00000000007D0000-0x00000000007D8000-memory.dmp

Filesize
32KB

Download
memory/2932-0-0x0000000074AAE000-0x0000000074AAF000-memory.dmp

Filesize
4KB

Download
memory/2932-4-0x0000000000740000-0x0000000000752000-memory.dmp

Filesize
72KB

Download
memory/2932-3-0x00000000047B0000-0x0000000004842000-memory.dmp

Filesize
584KB

Download