blacknet | e39546fbb5714be7f87be265c98286366b4d2cc6cbafe0d4c71bf95da856f118

General

Target

Launcher.bin.exe
Size

124KB
MD5

40c9946204cea15489c3a70b81b5efc4
SHA1

a0471872910573f1bb166dd69f3e11ed9eb04ed2
SHA256

e39546fbb5714be7f87be265c98286366b4d2cc6cbafe0d4c71bf95da856f118
SHA512

04f07054611c2be0a8f36cf6805eb8a39cce0c7c3f1a3ec255569e3fbbf2d4cc89081b579184405ffcc215a7429ba1108736d8ae6841ea380050c0828653ef05

Score

10^/10

blacknet hello persistence trojan

Malware Config

Extracted

Family

blacknet

Version

v3.6.0 Public

Botnet

Hello

C2

http://141.95.21.84

Mutex

BN[lEBYtSLH-5805348]

Attributes

antivm
false
elevate_uac
false
install_name
WindowsUpdate.exe
splitter
|BN|
start_name
68b4a4f47850fb62cd2157162048241c
startup
true
usb_spread
false

Signatures

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

BlackNET Payload 2 IoCs

Processes:

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

Executes dropped EXE 1 IoCs

Processes:

WindowsUpdate.exe

pid process

3932 WindowsUpdate.exe

pid	process
3932	WindowsUpdate.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

WindowsUpdate.exeLauncher.bin.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\68b4a4f47850fb62cd2157162048241c = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	WindowsUpdate.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\68b4a4f47850fb62cd2157162048241c = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Launcher.bin.exe"	Launcher.bin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\68b4a4f47850fb62cd2157162048241c = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	Launcher.bin.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

Launcher.bin.exeWindowsUpdate.exe

pid	process
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
644	Launcher.bin.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe
3932	WindowsUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Launcher.bin.exeWindowsUpdate.exe

description pid process

Token: SeDebugPrivilege 644 Launcher.bin.exe
Token: SeDebugPrivilege 3932 WindowsUpdate.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

Launcher.bin.exeWindowsUpdate.exe

pid process

644 Launcher.bin.exe
644 Launcher.bin.exe
3932 WindowsUpdate.exe
3932 WindowsUpdate.exe

description	pid	process
Token: SeDebugPrivilege	644	Launcher.bin.exe
Token: SeDebugPrivilege	3932	WindowsUpdate.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

Launcher.bin.exe

description	pid	process	target process
PID 644 wrote to memory of 3932	644	Launcher.bin.exe	WindowsUpdate.exe
PID 644 wrote to memory of 3932	644	Launcher.bin.exe	WindowsUpdate.exe

C:\Users\Admin\AppData\Local\Temp\Launcher.bin.exe
"C:\Users\Admin\AppData\Local\Temp\Launcher.bin.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:644
- C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe
  "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3932

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
40c9946204cea15489c3a70b81b5efc4

SHA1
a0471872910573f1bb166dd69f3e11ed9eb04ed2

SHA256
e39546fbb5714be7f87be265c98286366b4d2cc6cbafe0d4c71bf95da856f118

SHA512
04f07054611c2be0a8f36cf6805eb8a39cce0c7c3f1a3ec255569e3fbbf2d4cc89081b579184405ffcc215a7429ba1108736d8ae6841ea380050c0828653ef05

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

MD5
40c9946204cea15489c3a70b81b5efc4

SHA1
a0471872910573f1bb166dd69f3e11ed9eb04ed2

SHA256
e39546fbb5714be7f87be265c98286366b4d2cc6cbafe0d4c71bf95da856f118

SHA512
04f07054611c2be0a8f36cf6805eb8a39cce0c7c3f1a3ec255569e3fbbf2d4cc89081b579184405ffcc215a7429ba1108736d8ae6841ea380050c0828653ef05

Download Submit
C:\Users\Admin\AppData\Local\Temp\svchosts.exe

MD5
89dd6e72358a669b7d6e2348307a7af7

SHA1
0db348f3c6114a45d71f4d218e0e088b71c7bb0a

SHA256
ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e

SHA512
93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b

Download Submit
memory/644-118-0x000000000292A000-0x000000000292F000-memory.dmp

Filesize
20KB

Download
memory/644-117-0x0000000002929000-0x000000000292A000-memory.dmp

Filesize
4KB

Download
memory/644-114-0x0000000002920000-0x0000000002922000-memory.dmp

Filesize
8KB

Download
memory/644-116-0x0000000002926000-0x0000000002927000-memory.dmp

Filesize
4KB

Download
memory/644-115-0x0000000002924000-0x0000000002925000-memory.dmp

Filesize
4KB

Download
memory/3932-119-0x0000000000000000-mapping.dmp

Download
memory/3932-122-0x0000000002F80000-0x0000000002F82000-memory.dmp

Filesize
8KB

Download
memory/3932-123-0x0000000002F84000-0x0000000002F85000-memory.dmp

Filesize
4KB

Download
memory/3932-124-0x0000000002F86000-0x0000000002F87000-memory.dmp

Filesize
4KB

Download
memory/3932-125-0x0000000002F89000-0x0000000002F8A000-memory.dmp

Filesize
4KB

Download
memory/3932-126-0x0000000002F8A000-0x0000000002F8F000-memory.dmp

Filesize
20KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads