Malware Analysis Report

2025-04-03 09:07

Sample ID 200917-npye4zvrks
Target test2.exe
SHA256 c214b31584d7f10aac62a292961052fecb27885fede2efe65c7f4cc40ae6dce0
Tags
hacked_atid_test_2 blacknet persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c214b31584d7f10aac62a292961052fecb27885fede2efe65c7f4cc40ae6dce0

Threat Level: Known bad

The file test2.exe was found to be: Known bad.

Malicious Activity Summary

hacked_atid_test_2 blacknet persistence trojan

Blacknet family

Contains code to disable Windows Defender

BlackNET

BlackNET Payload

Executes dropped EXE

Adds Run key to start application

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-08-05 15:39

Signatures

BlackNET Payload

Description Indicator Process Target
N/A N/A N/A N/A

Blacknet family

blacknet

Contains code to disable Windows Defender

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-09-17 14:14

Reported

2020-09-17 14:16

Platform

win7

Max time kernel

13s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\test2.exe"

Signatures

BlackNET

trojan blacknet

BlackNET Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Contains code to disable Windows Defender

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe" C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\test2.exe" C:\Users\Admin\AppData\Local\Temp\test2.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\test2.exe

"C:\Users\Admin\AppData\Local\Temp\test2.exe"

C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe

"C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 nicurb.com udp
N/A 104.27.134.41:443 nicurb.com tcp

Files

memory/112-0-0x000007FEF6550000-0x000007FEF6EED000-memory.dmp

memory/112-1-0x000007FEF6550000-0x000007FEF6EED000-memory.dmp

memory/824-2-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe

MD5 44ae5900e0b03963ee0a02e72f004fc1
SHA1 fdebc2d4c5f5f79c10dab9197875aa5964f9f72e
SHA256 c214b31584d7f10aac62a292961052fecb27885fede2efe65c7f4cc40ae6dce0
SHA512 e3baa84f2b1a0e64aaedb0568ade8ae50d7acfddec1880aa7927dc3a8485ed598b49183d1ea953cc6e72e282e3cb002e7bf471f31bf5ec99ccacda2a910cb7bb

C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe

MD5 44ae5900e0b03963ee0a02e72f004fc1
SHA1 fdebc2d4c5f5f79c10dab9197875aa5964f9f72e
SHA256 c214b31584d7f10aac62a292961052fecb27885fede2efe65c7f4cc40ae6dce0
SHA512 e3baa84f2b1a0e64aaedb0568ade8ae50d7acfddec1880aa7927dc3a8485ed598b49183d1ea953cc6e72e282e3cb002e7bf471f31bf5ec99ccacda2a910cb7bb

memory/824-5-0x000007FEF6550000-0x000007FEF6EED000-memory.dmp

memory/824-6-0x000007FEF6550000-0x000007FEF6EED000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-09-17 14:14

Reported

2020-09-17 14:16

Platform

win10

Max time kernel

39s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\test2.exe"

Signatures

BlackNET

trojan blacknet

BlackNET Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Contains code to disable Windows Defender

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe" C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe" C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\test2.exe" C:\Users\Admin\AppData\Local\Temp\test2.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\test2.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\test2.exe

"C:\Users\Admin\AppData\Local\Temp\test2.exe"

C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe

"C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 nicurb.com udp
N/A 104.27.134.41:443 nicurb.com tcp
N/A 104.27.134.41:443 nicurb.com tcp
N/A 104.27.134.41:443 nicurb.com tcp

Files

memory/3024-0-0x00007FFF5D750000-0x00007FFF5E0F0000-memory.dmp

memory/1772-1-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe

MD5 44ae5900e0b03963ee0a02e72f004fc1
SHA1 fdebc2d4c5f5f79c10dab9197875aa5964f9f72e
SHA256 c214b31584d7f10aac62a292961052fecb27885fede2efe65c7f4cc40ae6dce0
SHA512 e3baa84f2b1a0e64aaedb0568ade8ae50d7acfddec1880aa7927dc3a8485ed598b49183d1ea953cc6e72e282e3cb002e7bf471f31bf5ec99ccacda2a910cb7bb

C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe

MD5 44ae5900e0b03963ee0a02e72f004fc1
SHA1 fdebc2d4c5f5f79c10dab9197875aa5964f9f72e
SHA256 c214b31584d7f10aac62a292961052fecb27885fede2efe65c7f4cc40ae6dce0
SHA512 e3baa84f2b1a0e64aaedb0568ade8ae50d7acfddec1880aa7927dc3a8485ed598b49183d1ea953cc6e72e282e3cb002e7bf471f31bf5ec99ccacda2a910cb7bb

memory/1772-4-0x00007FFF5D750000-0x00007FFF5E0F0000-memory.dmp