Behavioral task
behavioral1
Sample
b915e7033b022809456a0832d0e2bdffbe3eba14e36771092aba299f650515aa.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
b915e7033b022809456a0832d0e2bdffbe3eba14e36771092aba299f650515aa.exe
Resource
win11-20250502-en
General
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Target
b915e7033b022809456a0832d0e2bdffbe3eba14e36771092aba299f650515aa
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Size
26KB
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MD5
fa24406f7dced91a8d217b89fcf5edcf
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SHA1
3acbdd164372f9844b92346603c64f970c8079fa
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SHA256
b915e7033b022809456a0832d0e2bdffbe3eba14e36771092aba299f650515aa
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SHA512
5b9fd0b3dd6678f5e8661ebf0fbde70effd7f6bd62ee4c03d8bf7c0241786ae4908deebc5f5d8ddb0513c4bc539ecdec6fdf92f3988c273d6eab31bb44d603b9
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SSDEEP
384:gBt7Br5xjL9AgA71FbhvP/KWLsqmFae+rOAqmFae+rOb8p8dWA8dWK:s7BlpppARFbhdLz8ae+rOn8ae+rOb8N
Malware Config
Signatures
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Cosmu family
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Detects Cosmu payload 1 IoCs
Cosmu is a worm written in C++.
resource yara_rule sample family_cosmu -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource b915e7033b022809456a0832d0e2bdffbe3eba14e36771092aba299f650515aa
Files
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b915e7033b022809456a0832d0e2bdffbe3eba14e36771092aba299f650515aa.exe windows:1 windows x86 arch:x86
8abecba2211e61763c4c9ffcaa13369e
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DEBUG_STRIPPED
Imports
mfc42
ord2770
ord356
ord2781
ord4058
ord3181
ord2764
ord1980
ord668
ord926
ord924
ord941
ord4129
ord537
ord540
ord6282
ord825
ord6283
ord5683
ord5710
ord858
ord800
ord535
ord859
msvcrt
_adjust_fdiv
__p__commode
__p__fmode
__set_app_type
_except_handler3
_controlfp
__setusermatherr
_initterm
__getmainargs
_acmdln
exit
_XcptFilter
_exit
_beginthread
rand
fgetc
fputc
fwrite
rename
fopen
fseek
fread
fclose
_stat
__CxxFrameHandler
_mbscmp
kernel32
GetCurrentThread
GetCurrentProcess
SetPriorityClass
lstrcatA
lstrcpyA
GetEnvironmentVariableA
GetShortPathNameA
GetModuleFileNameA
GetFileAttributesA
DeleteFileA
SetFileAttributesA
GetSystemDirectoryA
WaitForSingleObject
CreateProcessA
Sleep
GetLogicalDrives
GetModuleHandleA
GetStartupInfoA
SetThreadPriority
user32
LoadIconA
MessageBoxA
shell32
ShellExecuteExA
SHChangeNotify
Sections
Size: 5KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Size: 2KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Size: 512B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.spack Size: 1024B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE