Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
04-01-2025 15:34
Behavioral task
behavioral1
Sample
letter.htm.scr
Resource
win7-20240903-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
letter.htm.scr
Resource
win10v2004-20241007-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
letter.htm.scr
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Size
21KB
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MD5
067928dd70d5dd9f93eb1db52d50b616
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SHA1
b9cce2e0206f51b0972bf71d5496324de3e2bb48
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SHA256
0f07681f79a9e584f5cadfbff32a7ea5b0372f7786de280fe799339d0dc6fb96
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SHA512
d98b083ab0e6e95c746975ae5c7d5f81f2f58af9090e6eafcaeff46af4b29af73d1be0024dbd0336d244a3bf64f66184d97355fe16c5a2ae6b04f43be88762fa
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SSDEEP
384:FZcpzCIqdG3A3WUkx38GZDJuJbf1+o44u8gHzUTX7:SCIqdH/k1ZVcT194jp4r7
Score
10/10
Malware Config
Signatures
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Detects MyDoom family 8 IoCs
resource yara_rule behavioral2/memory/4960-3-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral2/memory/4960-5-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral2/memory/4960-7-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral2/memory/4960-9-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral2/memory/4960-11-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral2/memory/4960-13-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral2/memory/4960-91-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral2/memory/4960-140-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom -
Mydoom family
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Traybar = "C:\\Windows\\lsass.exe" letter.htm.scr -
resource yara_rule behavioral2/memory/4960-0-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral2/memory/4960-3-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral2/memory/4960-5-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral2/memory/4960-7-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral2/memory/4960-9-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral2/memory/4960-11-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral2/memory/4960-13-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral2/files/0x000300000000070f-18.dat upx behavioral2/memory/4960-91-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral2/memory/4960-140-0x0000000000800000-0x000000000080D000-memory.dmp upx -
Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Common Files\microsoft shared\ink\de-DE\ICQ 4 Lite.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskclearui\Kazaa Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\symbols\Harry Potter.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\hu-HU\index.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\sr-Latn-RS\Kazaa Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\th-TH\Harry Potter.exe letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\keypad\Kazaa Lite.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\Kazaa Lite.exe letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\index.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\Harry Potter.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\OFFICE16\Office Setup Controller\ICQ 4 Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\TextConv\en-US\index.ShareReactor.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\index.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\Winamp 5.0 (en) Crack.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\da-DK\WinRAR.v.3.2.and.key.exe letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\Triedit\WinRAR.v.3.2.and.key.ShareReactor.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\ICQ 4 Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\Winamp 5.0 (en) Crack.exe letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\Winamp 5.0 (en) Crack.ShareReactor.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\Kazaa Lite.exe letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\cs-CZ\Kazaa Lite.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\nl-NL\Kazaa Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\zh-CN\index.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\pt-PT\Kazaa Lite.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\Harry Potter.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknav\index.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\hr-HR\ICQ 4 Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\Winamp 5.0 (en).exe letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\Winamp 5.0 (en) Crack.exe letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\Harry Potter.exe letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\WinRAR.v.3.2.and.key.exe letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskpred\Kazaa Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\LanguageModel\Harry Potter.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\VC\Harry Potter.exe letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\index.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\Winamp 5.0 (en).ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\ICQ 4 Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\he-IL\ICQ 4 Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\nb-NO\Harry Potter.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\ICQ 4 Lite.exe letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\fr-CA\ICQ 4 Lite.exe letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\HWRCustomization\WinRAR.v.3.2.and.key.exe letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\ICQ 4 Lite.exe letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskmenu\Winamp 5.0 (en) Crack.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknumpad\Harry Potter.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\tr-TR\index.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\sk-SK\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\MSInfo\Winamp 5.0 (en) Crack.exe letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\MSInfo\it-IT\WinRAR.v.3.2.and.key.ShareReactor.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\Kazaa Lite.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\el-GR\ICQ 4 Lite.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\zh-TW\Winamp 5.0 (en).ShareReactor.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\index.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\WinRAR.v.3.2.and.key.ShareReactor.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\Harry Potter.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\Winamp 5.0 (en) Crack.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Winamp 5.0 (en).com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\ro-RO\Kazaa Lite.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\ru-RU\WinRAR.v.3.2.and.key.ShareReactor.com letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\ICQ 4 Lite.exe letter.htm.scr File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\Harry Potter.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\microsoft shared\ink\ar-SA\Winamp 5.0 (en) Crack.exe letter.htm.scr -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\lsass.exe letter.htm.scr File created C:\Windows\lsass.exe letter.htm.scr -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language letter.htm.scr
Processes
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
21KB
MD5067928dd70d5dd9f93eb1db52d50b616
SHA1b9cce2e0206f51b0972bf71d5496324de3e2bb48
SHA2560f07681f79a9e584f5cadfbff32a7ea5b0372f7786de280fe799339d0dc6fb96
SHA512d98b083ab0e6e95c746975ae5c7d5f81f2f58af9090e6eafcaeff46af4b29af73d1be0024dbd0336d244a3bf64f66184d97355fe16c5a2ae6b04f43be88762fa