Analysis
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max time kernel
150s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 9 IoCs
resource yara_rule behavioral1/memory/3044-3-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral1/memory/3044-5-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral1/memory/3044-7-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral1/memory/3044-9-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral1/memory/3044-11-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral1/memory/3044-92-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral1/memory/3044-115-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral1/memory/3044-116-0x0000000000800000-0x000000000080D000-memory.dmp family_mydoom behavioral1/memory/3044-125-0x0000000000800000-0x000000000080D000-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 behavioral1/memory/3044-0-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral1/memory/3044-3-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral1/memory/3044-5-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral1/memory/3044-7-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral1/memory/3044-9-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral1/memory/3044-11-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral1/files/0x0007000000014a05-16.dat upx behavioral1/memory/3044-92-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral1/memory/3044-115-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral1/memory/3044-116-0x0000000000800000-0x000000000080D000-memory.dmp upx behavioral1/memory/3044-125-0x0000000000800000-0x000000000080D000-memory.dmp upx -
Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Common Files\Microsoft Shared\MSInfo\en-US\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\MSInfo\ja-JP\ICQ 4 Lite.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\TextConv\en-US\index.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\Harry Potter.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\auxpad\Winamp 5.0 (en) Crack.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\hu-HU\ICQ 4 Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\it-IT\Kazaa Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\el-GR\Winamp 5.0 (en).ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\tr-TR\index.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\MSInfo\fr-FR\Winamp 5.0 (en).com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\Triedit\fr-FR\Kazaa Lite.exe letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\DVD Maker\Shared\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\LayeredTitles\Harry Potter.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\da-DK\ICQ 4 Lite.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\hr-HR\ICQ 4 Lite.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\lv-LV\WinRAR.v.3.2.and.key.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\pt-PT\ICQ 4 Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\ro-RO\ICQ 4 Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\TextConv\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\Winamp 5.0 (en).exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\1033\Winamp 5.0 (en) Crack.ShareReactor.com letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\BabyBoy\ICQ 4 Lite.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\ar-SA\Winamp 5.0 (en) Crack.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\es-ES\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\he-IL\Kazaa Lite.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\ru-RU\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\index.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\Triedit\en-US\Kazaa Lite.com letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\HueCycle\Winamp 5.0 (en) Crack.exe letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\OldAge\Kazaa Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\ICQ 4 Lite.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\pt-BR\Winamp 5.0 (en) Crack.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\sv-SE\WinRAR.v.3.2.and.key.ShareReactor.com letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\BabyGirl\Harry Potter.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\fi-FI\index.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\keypad\Winamp 5.0 (en).exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\nb-NO\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\MSInfo\es-ES\Harry Potter.exe letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\Shatter\Kazaa Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\MSInfo\it-IT\Kazaa Lite.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\Triedit\it-IT\Winamp 5.0 (en) Crack.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\de-DE\Winamp 5.0 (en).com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\et-EE\Harry Potter.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\numbers\ICQ 4 Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\oskpred\index.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\lt-LT\Winamp 5.0 (en) Crack.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\sk-SK\Kazaa Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\Vignette\Harry Potter.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\VC\Kazaa Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\VSTO\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\cs-CZ\Winamp 5.0 (en) Crack.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\oskmenu\Harry Potter.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\osknumpad\Winamp 5.0 (en).ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\sr-Latn-CS\Kazaa Lite.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\zh-TW\Winamp 5.0 (en).exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\MSInfo\Winamp 5.0 (en) Crack.ShareReactor.com letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\Stacking\ICQ 4 Lite.exe letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\symbols\Kazaa Lite.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\web\WinRAR.v.3.2.and.key.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\ja-JP\Winamp 5.0 (en) Crack.ShareReactor.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\ink\ko-KR\index.com letter.htm.scr File created C:\Program Files\Common Files\Microsoft Shared\TextConv\fr-FR\ICQ 4 Lite.com letter.htm.scr File created C:\Program Files\DVD Maker\Shared\DvdStyles\Push\Kazaa Lite.ShareReactor.com letter.htm.scr -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\lsass.exe letter.htm.scr File opened for modification 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
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Downloads
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Filesize
21KB
MD5067928dd70d5dd9f93eb1db52d50b616
SHA1b9cce2e0206f51b0972bf71d5496324de3e2bb48
SHA2560f07681f79a9e584f5cadfbff32a7ea5b0372f7786de280fe799339d0dc6fb96
SHA512d98b083ab0e6e95c746975ae5c7d5f81f2f58af9090e6eafcaeff46af4b29af73d1be0024dbd0336d244a3bf64f66184d97355fe16c5a2ae6b04f43be88762fa