blacknet | a6a3d9347478b4ea72b12d426800e20f99b53244cdc82f1054fa4b893d63943e

Analysis

max time kernel
148s
max time network
174s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2023 22:29

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General

Target

4038b0f5b6d73f6f1bf361ec56d9accd.exe
Size

215KB
MD5

4038b0f5b6d73f6f1bf361ec56d9accd
SHA1

58f54341266bf8185ebf7798252e01c4449d34d5
SHA256

a6a3d9347478b4ea72b12d426800e20f99b53244cdc82f1054fa4b893d63943e
SHA512

995f9e09ffbefa8f24fe0723769b5cb980b36fbccd6d8234048c3fdb01a7e40956885f2412df7d61303d9152905f5eec88e36e672e3210e8cd675e58b4f87e70
SSDEEP

3072:8ZCTmNKiBQAeQiObjsFBFM822z3dU+GdtiTnf1aVkoqOID:iCTmNKimTQiObQhaf/UWko

Score

10^/10

blacknet trojan

Malware Config

Signatures

BlackNET
BlackNET is an open source remote access tool written in VB.NET.
trojan blacknet

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

4038b0f5b6d73f6f1bf361ec56d9accd.exe

pid	process
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

4038b0f5b6d73f6f1bf361ec56d9accd.exedw20.exe

description	pid	process
Token: SeDebugPrivilege	3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe
Token: SeBackupPrivilege	4248	dw20.exe
Token: SeBackupPrivilege	4248	dw20.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

4038b0f5b6d73f6f1bf361ec56d9accd.exe

pid process

3040 4038b0f5b6d73f6f1bf361ec56d9accd.exe
3040 4038b0f5b6d73f6f1bf361ec56d9accd.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

4038b0f5b6d73f6f1bf361ec56d9accd.exe

description	pid	process	target process
PID 3040 wrote to memory of 4248	3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe	dw20.exe
PID 3040 wrote to memory of 4248	3040	4038b0f5b6d73f6f1bf361ec56d9accd.exe	dw20.exe

C:\Users\Admin\AppData\Local\Temp\4038b0f5b6d73f6f1bf361ec56d9accd.exe
"C:\Users\Admin\AppData\Local\Temp\4038b0f5b6d73f6f1bf361ec56d9accd.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3040

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
dw20.exe -x -s 1564
2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:4248

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/3040-0-0x00007FFE0D170000-0x00007FFE0DB11000-memory.dmp

Filesize
9.6MB

Download
memory/3040-1-0x00007FFE0D170000-0x00007FFE0DB11000-memory.dmp

Filesize
9.6MB

Download
memory/3040-2-0x00000000012E0000-0x00000000012F0000-memory.dmp

Filesize
64KB

Download
memory/3040-3-0x000000001BA20000-0x000000001BAC6000-memory.dmp

Filesize
664KB

Download
memory/3040-4-0x000000001BFA0000-0x000000001C46E000-memory.dmp

Filesize
4.8MB

Download
memory/3040-5-0x000000001C550000-0x000000001C5EC000-memory.dmp

Filesize
624KB

Download
memory/3040-6-0x00007FFE0D170000-0x00007FFE0DB11000-memory.dmp

Filesize
9.6MB

Download
memory/3040-7-0x0000000001500000-0x0000000001508000-memory.dmp

Filesize
32KB

Download
memory/3040-8-0x00007FFE0D170000-0x00007FFE0DB11000-memory.dmp

Filesize
9.6MB

Download
memory/3040-9-0x000000001C6B0000-0x000000001C6FC000-memory.dmp

Filesize
304KB

Download
memory/3040-10-0x00000000012E0000-0x00000000012F0000-memory.dmp

Filesize
64KB

Download
memory/3040-11-0x00000000012E0000-0x00000000012F0000-memory.dmp

Filesize
64KB

Download
memory/3040-12-0x00000000012E0000-0x00000000012F0000-memory.dmp

Filesize
64KB

Download
memory/3040-13-0x000000001FDA0000-0x000000001FE02000-memory.dmp

Filesize
392KB

Download
memory/3040-20-0x00007FFE0D170000-0x00007FFE0DB11000-memory.dmp

Filesize
9.6MB

Download