Analysis
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max time kernel
68s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
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submitted
07-02-2023 02:36
General
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Target
c77e5db3244e658843f06ae2e61ad95f.exe
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Size
133KB
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MD5
c77e5db3244e658843f06ae2e61ad95f
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SHA1
5bcf4c83cd1218db713c1be89369e368c6c0f115
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SHA256
97ac2f7c9ff8e79aa217a8bac22bc9575cecb39bc87bcd753d428c56ea4899c9
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SHA512
0d62eaaf493e840d4fe0c96cde1d8d1c76377789c1e99817426e39d16573a4a8de722d3c337a100e2a3c74bea7f1d89e5e494b0587b4c6114eb33b8b0c31d339
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SSDEEP
3072:BI7KpEaKA2L22xYWVVz8pWzWpBZ7ubozFyTO1wbCl9fGJu:u7kKAhI8pWzWpB0boQMZGJ
Malware Config
Extracted
blacknet
ec
NriE0EakUiK+22Ai4N6Othh0De1s55kV0+sFoXChkQhcVCI2dUu3XGlBV5pu/x/cmJ/BByQIf9PqFghM2sWKP07Iz1Om2nFj+5Ad12ZaY4I9PtWNNix+MC57LiawhMvDUqvUZ0D9AMzT8Ml3Nn9NF/VG4jr2jwHli/295QeYGFGuN7RO/IqZPFblPfaRqq3BNeE7xgdHFMHJVcwvHA4s0oso3I6avTLaxL57NqpSPVJhEZ1yPk4qQWERPXxXoS+1Wp4lQUuVgRpkdjgjhF3IjONn1RIO+3lwJvDoUCLTzG1IxQGrYB+xHSLQ6jCzByfdvDqCc0Jpf0uylVa3q6zmPQ==
BN[UfwxTUeC-7463479]
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antivm
false
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elevate_uac
true
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install_name
WindowsUpdate.exe
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splitter
|BN|
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start_name
cde2f914e4cce7f13b2c1cec7b6da970
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startup
false
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usb_spread
true
Signatures
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BlackNET
BlackNET is an open source remote access tool written in VB.NET.
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BlackNET payload 2 IoCs
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Contains code to disable Windows Defender 2 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
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Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
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Executes dropped EXE 2 IoCs
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Windows security modification 2 TTPs 2 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 5 IoCs
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Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\c77e5db3244e658843f06ae2e61ad95f.exe"C:\Users\Admin\AppData\Local\Temp\c77e5db3244e658843f06ae2e61ad95f.exe"1⤵
- Modifies Windows Defender Real-time Protection settings
- Windows security modification
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell" Get-MpPreference -verbose2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"2⤵
- Executes dropped EXE
- Windows security modification
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell" Get-MpPreference -verbose3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /sc ONSTART /RL HIGHEST /tn "'WindowsUpdate"' /tr "'C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"'3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\svchosts.exe"C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\svchosts.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
133KB
MD5c77e5db3244e658843f06ae2e61ad95f
SHA15bcf4c83cd1218db713c1be89369e368c6c0f115
SHA25697ac2f7c9ff8e79aa217a8bac22bc9575cecb39bc87bcd753d428c56ea4899c9
SHA5120d62eaaf493e840d4fe0c96cde1d8d1c76377789c1e99817426e39d16573a4a8de722d3c337a100e2a3c74bea7f1d89e5e494b0587b4c6114eb33b8b0c31d339
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Filesize
133KB
MD5c77e5db3244e658843f06ae2e61ad95f
SHA15bcf4c83cd1218db713c1be89369e368c6c0f115
SHA25697ac2f7c9ff8e79aa217a8bac22bc9575cecb39bc87bcd753d428c56ea4899c9
SHA5120d62eaaf493e840d4fe0c96cde1d8d1c76377789c1e99817426e39d16573a4a8de722d3c337a100e2a3c74bea7f1d89e5e494b0587b4c6114eb33b8b0c31d339
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Filesize
18KB
MD5d133d370c3858c9811e70f95d554d2c6
SHA1bb09b1253ce571a49b76951283883a3499588295
SHA25687a1711030512dd414bcbab0659a2b51c0c16505bd8a068a282a1cc2c9fdf93b
SHA512db4d41fca43e496b2b0d8d47d936a9ce204e3b6c4c669a8a9810362776a977b5337359b843fcd1d20004455d2c91f9790b3accb5352f4e55ec53c7e5d359d778
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Filesize
18KB
MD5d133d370c3858c9811e70f95d554d2c6
SHA1bb09b1253ce571a49b76951283883a3499588295
SHA25687a1711030512dd414bcbab0659a2b51c0c16505bd8a068a282a1cc2c9fdf93b
SHA512db4d41fca43e496b2b0d8d47d936a9ce204e3b6c4c669a8a9810362776a977b5337359b843fcd1d20004455d2c91f9790b3accb5352f4e55ec53c7e5d359d778
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Filesize
7KB
MD51378e490c0b7f5dc9b4fd534087d0ec5
SHA19788733cf9cdc02a3769f01beead8b796bcf36fa
SHA25623c9f5fbef6181200f2b3f9ead32efc9fa2aae211b881d89dba047c12641b2b8
SHA512ab62063146a9c09ff9ebfcc79fbda8797d2d0454cd38e229920706fe9c142b1f704b0c4253c9974f98836389ffcb60e41d56785282ee1f6beb7f1c0a71c72a07
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-
Filesize
12KB
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Filesize
124KB
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Filesize
10.1MB
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Filesize
16KB
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Filesize
32KB
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Filesize
16KB
-
Filesize
36KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
16KB
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Filesize
124KB
-
Filesize
16KB
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Filesize
16KB
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Filesize
16KB
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Filesize
16.6MB
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Filesize
16KB
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Filesize
16KB
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Filesize
16KB
-
Filesize
12KB
-
-
Filesize
64KB
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Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
36KB
-
Filesize
36KB
-
Filesize
16KB
-
Filesize
16KB
-
Filesize
32KB
-
Filesize
16KB
-
Filesize
36KB
-
Filesize
32KB
-
Filesize
16KB
-
Filesize
124KB
-
Filesize
10.1MB
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-
Filesize
16.6MB
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Filesize
16KB
-
Filesize
16KB
-
Filesize
124KB
-
Filesize
16KB
-
Filesize
124KB
-
Filesize
16.6MB
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Filesize
16KB
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Filesize
16KB
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Filesize
10.1MB
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Filesize
16KB
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Filesize
16KB
-
Filesize
10.1MB
-
Filesize
12KB
-
Filesize
124KB
-
Filesize
12KB
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Filesize
11.4MB
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Filesize
8KB
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-
Filesize
11.4MB
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Filesize
124KB
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Filesize
12KB
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Filesize
3.0MB
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-
Filesize
10.1MB
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Filesize
12KB