nanocore | b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a

Analysis

max time kernel
122s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-06-2024 01:44

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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

2592 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\DHCP Host = "C:\\Program Files (x86)\\DHCP Host\\dhcphost.exe" MSBuild.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe

description pid process target process

PID 2440 set thread context of 2380 2440 b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe MSBuild.exe
Drops file in Program Files directory 2 IoCs

Processes:

MSBuild.exe

description ioc process

File created C:\Program Files (x86)\DHCP Host\dhcphost.exe MSBuild.exe
File opened for modification C:\Program Files (x86)\DHCP Host\dhcphost.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

2360 schtasks.exe

pid	process
2592	powershell.exe

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

description	pid	process	target process
PID 2440 set thread context of 2380	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe

description	ioc	process
File created	C:\Program Files (x86)\DHCP Host\dhcphost.exe	MSBuild.exe
File opened for modification	C:\Program Files (x86)\DHCP Host\dhcphost.exe	MSBuild.exe

pid	process
2360	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exepowershell.exeMSBuild.exe

pid	process
2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
2592	powershell.exe
2380	MSBuild.exe
2380	MSBuild.exe
2380	MSBuild.exe
2380	MSBuild.exe
2380	MSBuild.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

MSBuild.exe

pid process

2380 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exepowershell.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 2440 b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
Token: SeDebugPrivilege 2592 powershell.exe
Token: SeDebugPrivilege 2380 MSBuild.exe

pid	process
2380	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
Token: SeDebugPrivilege	2592	powershell.exe
Token: SeDebugPrivilege	2380	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe

description	pid	process	target process
PID 2440 wrote to memory of 2592	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	powershell.exe
PID 2440 wrote to memory of 2592	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	powershell.exe
PID 2440 wrote to memory of 2592	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	powershell.exe
PID 2440 wrote to memory of 2592	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	powershell.exe
PID 2440 wrote to memory of 2360	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	schtasks.exe
PID 2440 wrote to memory of 2360	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	schtasks.exe
PID 2440 wrote to memory of 2360	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	schtasks.exe
PID 2440 wrote to memory of 2360	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	schtasks.exe
PID 2440 wrote to memory of 2380	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2440 wrote to memory of 2380	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2440 wrote to memory of 2380	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2440 wrote to memory of 2380	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2440 wrote to memory of 2380	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2440 wrote to memory of 2380	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2440 wrote to memory of 2380	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2440 wrote to memory of 2380	2440	b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe	MSBuild.exe
PID 2440 wrote to memory of 2380	2440	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:2440

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:2592

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zzTmYAoKh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3EE4.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2360

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:2380

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3EE4.tmp
Filesize
1KB

MD5
1a537d600fb442a3bf6bc26ea5893c0a

SHA1
d571ce26a2c0f4f391e0eb46e571c6b337d69936

SHA256
9a68c0b3258c353d31181abd7c1c0b489ea6609e117e90719526cd7018703e4e

SHA512
9987dec05f0936251589efdc456f2a3bf6dca8d6b2a907243c1b165238f04e929a55471e9ed014510d129dcd22b52ef1072100c31ffe0a147c873232d5fa5783

Download Submit
memory/2380-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2380-44-0x0000000000980000-0x000000000098E000-memory.dmp

Filesize
56KB

Download
memory/2380-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2380-45-0x00000000046F0000-0x000000000471E000-memory.dmp

Filesize
184KB

Download
memory/2380-43-0x0000000000970000-0x0000000000984000-memory.dmp

Filesize
80KB

Download
memory/2380-41-0x00000000007F0000-0x0000000000804000-memory.dmp

Filesize
80KB

Download
memory/2380-42-0x0000000000800000-0x0000000000810000-memory.dmp

Filesize
64KB

Download
memory/2380-38-0x0000000000780000-0x0000000000792000-memory.dmp

Filesize
72KB

Download
memory/2380-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2380-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2380-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2380-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2380-23-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2380-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2380-46-0x0000000000CD0000-0x0000000000CE4000-memory.dmp

Filesize
80KB

Download
memory/2380-39-0x0000000000790000-0x000000000079C000-memory.dmp

Filesize
48KB

Download
memory/2380-40-0x00000000007A0000-0x00000000007AE000-memory.dmp

Filesize
56KB

Download
memory/2380-30-0x00000000003A0000-0x00000000003AA000-memory.dmp

Filesize
40KB

Download
memory/2380-31-0x00000000004E0000-0x00000000004FE000-memory.dmp

Filesize
120KB

Download
memory/2380-32-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download
memory/2380-35-0x00000000005E0000-0x00000000005F2000-memory.dmp

Filesize
72KB

Download
memory/2380-36-0x0000000000640000-0x000000000065A000-memory.dmp

Filesize
104KB

Download
memory/2380-37-0x0000000000760000-0x000000000076E000-memory.dmp

Filesize
56KB

Download
memory/2440-7-0x0000000005530000-0x00000000055AA000-memory.dmp

Filesize
488KB

Download
memory/2440-2-0x00000000744D0000-0x0000000074BBE000-memory.dmp

Filesize
6.9MB

Download
memory/2440-1-0x0000000001280000-0x000000000131C000-memory.dmp

Filesize
624KB

Download
memory/2440-27-0x00000000744D0000-0x0000000074BBE000-memory.dmp

Filesize
6.9MB

Download
memory/2440-6-0x0000000000450000-0x000000000045C000-memory.dmp

Filesize
48KB

Download
memory/2440-5-0x0000000000440000-0x0000000000448000-memory.dmp

Filesize
32KB

Download
memory/2440-0-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/2440-4-0x00000000003E0000-0x00000000003F2000-memory.dmp

Filesize
72KB

Download
memory/2440-3-0x00000000010C0000-0x0000000001152000-memory.dmp

Filesize
584KB

Download