Behavioral task
behavioral1
Sample
Document.doc.scr
Resource
win10v2004-20240412-en
General
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Target
Lockbit (ScreenSaver).zip
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Size
107KB
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MD5
7aeda3cfab18339ef67e313757508d86
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SHA1
26c8deeffb2e39de5462595d9f032ccc667307d1
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SHA256
19d4b6b7609e8f421055ff39219cc4381753a26c451f982510e51bc2770b671f
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SHA512
0321c14ab695c85402b7ee4505db0caa50da3d539a3a93ef2abc022c0e0a1ea564de99b1b8b3189028346cacdee7d30626229221bc51baab0cf78eadb1150af5
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SSDEEP
3072:CkwNsCv3u2l6h6BOiXwx6zTHIa7tMyiFANFNj:Cr3v36H63ypFUr
Malware Config
Signatures
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Lockbit family
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Rule to detect Lockbit 3.0 ransomware Windows payload 1 IoCs
Processes:
resource yara_rule static1/unpack001/Document.doc.scr family_lockbit -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource unpack001/Document.doc.scr
Files
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Lockbit (ScreenSaver).zip.zip
Password: infected
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Document.doc.scr.exe windows:5 windows x86 arch:x86
Password: infected
41fb8cb2943df6de998b35a9d28668e8
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
gdi32
SetPixel
SetDCBrushColor
SelectPalette
GetTextColor
GetDeviceCaps
CreateSolidBrush
user32
DefWindowProcW
CreateMenu
EndDialog
GetDlgItem
GetKeyNameTextW
GetMessageW
GetWindowTextW
IsDlgButtonChecked
LoadImageW
LoadMenuW
DialogBoxParamW
kernel32
SetLastError
LoadLibraryW
GetTickCount
GetLastError
GetCommandLineW
GetCommandLineA
FreeLibrary
Sections
.text Size: 95KB - Virtual size: 95KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.itext Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 40KB - Virtual size: 43KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 48KB - Virtual size: 48KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ