blacknet | fa3f7a4c1502f499a481b56f5e7c185876626e3d00110d84e09652f98b776aff

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2024 09:49

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General

Target

7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f.exe
Size

247KB
MD5

312e0a90fe8474691950d41e57bfb003
SHA1

f8185c7943c6e93b75c0cec34daf2eccd7db848b
SHA256

7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f
SHA512

511b9029002da76cceaa9fc2a47aebfe6a365f3588614094ec8bddaaad80305fe79ba45d9a1cb23ca0c1d1572eb5106073fac033b644df5e867a13db69e39678
SSDEEP

3072:FYl5q4euWjwNpbF3onQ7twT12Hd+d9nVap5Ty6dz6m:yTqgWcbF/7twTWm64

Score

10^/10

blacknet persistence trojan

Malware Config

Signatures

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

BlackNET payload 1 IoCs

Processes:

resource	yara_rule
behavioral30/files/0x0007000000023cd5-15.dat	family_blacknet

Blacknet family
blacknet

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid	Process
1632	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\17d5d9a29524a220af2c5580f0145c42 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\svchost.exe"	7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

svchost.exe

pid	Process
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe
1632	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

svchost.exe

description	pid	Process
Token: SeDebugPrivilege	1632	svchost.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f.exe

description	pid	Process	procid_target
PID 4956 wrote to memory of 1632	4956	7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f.exe	90
PID 4956 wrote to memory of 1632	4956	7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f.exe	90

C:\Users\Admin\AppData\Local\Temp\7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f.exe
"C:\Users\Admin\AppData\Local\Temp\7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
247KB

MD5
312e0a90fe8474691950d41e57bfb003

SHA1
f8185c7943c6e93b75c0cec34daf2eccd7db848b

SHA256
7d6892645bc5ba581b2fff986b3e9371dd7298bab6aac890c99f80c8b1d78f0f

SHA512
511b9029002da76cceaa9fc2a47aebfe6a365f3588614094ec8bddaaad80305fe79ba45d9a1cb23ca0c1d1572eb5106073fac033b644df5e867a13db69e39678

Download Submit
memory/1632-31-0x00007FF9A50E0000-0x00007FF9A5A81000-memory.dmp

Filesize
9.6MB

Download
memory/1632-26-0x00007FF9A50E0000-0x00007FF9A5A81000-memory.dmp

Filesize
9.6MB

Download
memory/1632-25-0x00007FF9A50E0000-0x00007FF9A5A81000-memory.dmp

Filesize
9.6MB

Download
memory/4956-4-0x000000001BC70000-0x000000001BD0C000-memory.dmp

Filesize
624KB

Download
memory/4956-0-0x00007FF9A5395000-0x00007FF9A5396000-memory.dmp

Filesize
4KB

Download
memory/4956-6-0x000000001B000000-0x000000001B008000-memory.dmp

Filesize
32KB

Download
memory/4956-7-0x000000001BDD0000-0x000000001BE1C000-memory.dmp

Filesize
304KB

Download
memory/4956-8-0x00007FF9A50E0000-0x00007FF9A5A81000-memory.dmp

Filesize
9.6MB

Download
memory/4956-9-0x00007FF9A50E0000-0x00007FF9A5A81000-memory.dmp

Filesize
9.6MB

Download
memory/4956-10-0x000000001CF90000-0x000000001CFF2000-memory.dmp

Filesize
392KB

Download
memory/4956-5-0x00007FF9A50E0000-0x00007FF9A5A81000-memory.dmp

Filesize
9.6MB

Download
memory/4956-3-0x000000001B670000-0x000000001BB3E000-memory.dmp

Filesize
4.8MB

Download
memory/4956-2-0x00007FF9A50E0000-0x00007FF9A5A81000-memory.dmp

Filesize
9.6MB

Download
memory/4956-28-0x00007FF9A50E0000-0x00007FF9A5A81000-memory.dmp

Filesize
9.6MB

Download
memory/4956-27-0x00007FF9A5395000-0x00007FF9A5396000-memory.dmp

Filesize
4KB

Download
memory/4956-30-0x00007FF9A50E0000-0x00007FF9A5A81000-memory.dmp

Filesize
9.6MB

Download
memory/4956-1-0x000000001B0F0000-0x000000001B196000-memory.dmp

Filesize
664KB

Download