Behavioral task
behavioral1
Sample
builder.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
builder.exe
Resource
win10v2004-20241007-en
General
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Target
builder.exe
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Size
470KB
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MD5
8c689dc9e82c9356b990d2b67b4943e1
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SHA1
6bdc415b9c356bbeaea75c7336cd72910b95a644
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SHA256
e8e2deb0a83aebb1e2cc14846bc71715343372103f279d2d1622e383fb26d6ef
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SHA512
fb38a79dbcebde149736d5e1ca37dc15d274838be304d3f86e992d610b50c31d7fe4c30f6697c890f3753443af16eab712aef3f8da88d76ed00790083deb51e4
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SSDEEP
12288:7tDkI5O/1MHOvEIfRfaXNCTL98vy7anEvY86vM1kiY4XotXpEKAoiO5wBmrkAUfM:7tQcOdu4BcCTL98vy7anEvY86vM1kiYt
Malware Config
Extracted
blackmatter
65.239
Signatures
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Blackmatter family
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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 sample family_lockbit -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource builder.exe
Files
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builder.exe.exe windows:5 windows x86 arch:x86
d2e26e45dcb84f1062f90f29a9cf0faa
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
user32
MessageBoxW
kernel32
LoadResource
WriteFile
CreateFileW
ExitProcess
FindResourceW
GetCommandLineW
GetFileSize
GetModuleHandleW
GlobalFree
SizeofResource
LockResource
ReadFile
shell32
CommandLineToArgvW
msvcrt
_wcsicmp
memcpy
memset
sprintf
strchr
strcpy
strlen
strstr
wcscat
wcscpy
wcslen
wcsrchr
localeconv
_stricmp
_strcmpi
tolower
realloc
malloc
free
strtod
strncmp
imagehlp
CheckSumMappedFile
ntdll
RtlFreeHeap
RtlAllocateHeap
NtClose
RtlImageNtHeader
Sections
.text Size: 20KB - Virtual size: 19KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 8KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 439KB - Virtual size: 438KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ