Behavioral task
behavioral1
Sample
c9fda8aa3ced28ab18a3f40aa30b85968d3261e1b7ab6316680770420ee17d84.exe
Resource
win10v2004-20250502-en
General
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Target
c9fda8aa3ced28ab18a3f40aa30b85968d3261e1b7ab6316680770420ee17d84
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Size
25KB
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MD5
1cf41b445e911cbb2b7e2bb63a3b8e2d
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SHA1
d7fe74e6682458f8251deab4259c359fc88ded76
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SHA256
c9fda8aa3ced28ab18a3f40aa30b85968d3261e1b7ab6316680770420ee17d84
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SHA512
1de7e1d3112f849d057a151fbc605c1e7d8679c77273a67d55980f22aab00ac9d71a5bfebeda2e82b18d81b4c17fbab7654b99d2faec2a7f093044648e3eca50
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SSDEEP
384:gBt7Br5xjL9AgA71FbhvP/KWLsqmFae+rOAqmFae+rOr9NNV5H/V36ac:s7BlpppARFbhdLz8ae+rOn8ae+rO2ac
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 c9fda8aa3ced28ab18a3f40aa30b85968d3261e1b7ab6316680770420ee17d84
Files
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c9fda8aa3ced28ab18a3f40aa30b85968d3261e1b7ab6316680770420ee17d84.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