Analysis
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max time kernel
143s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
submitted
17-08-2024 17:08
General
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Target
brr.exe
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Size
827KB
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MD5
92867f5de7d9de203c1f9f4781961863
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SHA1
103fa7ef6a97862f568d410e7607e34f1c41da18
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SHA256
4b90d4fb520d1deda7f182e1a19e7750979086bfbae6e2b44b276c8130e7c0c8
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SHA512
818208e48ebc2797645dce2d79545215e5c4d32bed0ac65ae14f72d388a6179ebf2268690ec6c8f6923ef1a57d71bebc9e26e1906df16843b729f30b06746f34
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SSDEEP
12288:xMSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9nKas/fHmwj:xnsJ39LyjbJkQFMhmC+6GD9KTuA
Malware Config
Extracted
asyncrat
Venom RAT + HVNC + Stealer + Grabber v6.0.3
Crown
127.0.0.1:9090
127.0.0.1:5013
147.185.221.22:9090
147.185.221.22:5013
vopltdrmzkidmoli
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delay
1
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install
true
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install_file
Windows.exe
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install_folder
%Temp%
Extracted
xred
xred.mooo.com
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payload_url
http://freedns.afraid.org/api/?action=getdyndns&sha=a30fa98efc092684e8d1c5cff797bcc613562978
https://docs.google.com/uc?id=0BxsMXGfPIZfSVlVsOGlEVGxuZVk&export=download
https://www.dropbox.com/s/n1w4p8gc6jzo0sg/SUpdate.ini?dl=1
http://xred.site50.net/syn/SUpdate.ini
https://docs.google.com/uc?id=0BxsMXGfPIZfSVzUyaHFYVkQxeFk&export=download
https://www.dropbox.com/s/zhp1b06imehwylq/Synaptics.rar?dl=1
http://xred.site50.net/syn/Synaptics.rar
https://docs.google.com/uc?id=0BxsMXGfPIZfSTmlVYkxhSDg5TzQ&export=download
https://www.dropbox.com/s/fzj752whr3ontsm/SSLLibrary.dll?dl=1
http://xred.site50.net/syn/SSLLibrary.dll
Signatures
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AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
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Asyncrat family
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Xred
Xred is backdoor written in Delphi.
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Xred family
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Async RAT payload 1 IoCs
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 3 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).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
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Enumerates system info in registry 2 TTPs 3 IoCs
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Modifies registry class 2 IoCs
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Suspicious behavior: AddClipboardFormatListener 1 IoCs
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Suspicious use of AdjustPrivilegeToken 64 IoCs
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Suspicious use of SetWindowsHookEx 4 IoCs
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Suspicious use of WriteProcessMemory 7 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\brr.exe"C:\Users\Admin\AppData\Local\Temp\brr.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\._cache_brr.exe"C:\Users\Admin\AppData\Local\Temp\._cache_brr.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\ProgramData\Synaptics\Synaptics.exe"C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe"C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
827KB
MD592867f5de7d9de203c1f9f4781961863
SHA1103fa7ef6a97862f568d410e7607e34f1c41da18
SHA2564b90d4fb520d1deda7f182e1a19e7750979086bfbae6e2b44b276c8130e7c0c8
SHA512818208e48ebc2797645dce2d79545215e5c4d32bed0ac65ae14f72d388a6179ebf2268690ec6c8f6923ef1a57d71bebc9e26e1906df16843b729f30b06746f34
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Filesize
74KB
MD505a780ca5b8f32b1fbbc0b8e0012247f
SHA1518bbe68186667deda350cf3475bee4dee5e071c
SHA2564b685783cf16a471b5c4b8c117e9b12ad37b590b521a003167eb3692c9b66df0
SHA5124b52ec4a1dfb96fa5c6d4109c2bbc0d64ec130d5f52cca9ce947a3b371eb8a791c1b9687829f3fcb32946ebe8bdbf8055239c86a7b7e2c9bffa9256d74580243
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Filesize
17KB
MD5e566fc53051035e1e6fd0ed1823de0f9
SHA100bc96c48b98676ecd67e81a6f1d7754e4156044
SHA2568e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15
SHA512a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04
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Filesize
8B
MD5cf759e4c5f14fe3eec41b87ed756cea8
SHA1c27c796bb3c2fac929359563676f4ba1ffada1f5
SHA256c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
SHA512c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b
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Filesize
10.8MB
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Filesize
8KB
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Filesize
96KB
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Filesize
10.8MB
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Filesize
64KB
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Filesize
64KB
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Filesize
64KB
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Filesize
64KB
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Filesize
64KB
-
Filesize
64KB
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Filesize
64KB
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Filesize
4KB
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Filesize
852KB
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Filesize
852KB
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Filesize
852KB
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Filesize
852KB