Behavioral task
behavioral1
Sample
a4a38c4cae0a03696b0442be30f77372403d3db8d5947febd713e865c1a690e6.exe
Resource
win7-20240221-en
General
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Target
a4a38c4cae0a03696b0442be30f77372403d3db8d5947febd713e865c1a690e6
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Size
157KB
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MD5
881c325f33d474f2f5cd1ab6a73bfe89
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SHA1
9cd27d0adb0abbad9fb434685d9ad89559b677b3
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SHA256
a4a38c4cae0a03696b0442be30f77372403d3db8d5947febd713e865c1a690e6
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SHA512
4478177d3c6519cb705accdb6db9744d4590c260b8049ca0e0520c44f9c7de34541e1d5a4e62b681fe7e7e63913077fb57b0f3916e3b2e4f265f835a7f594b79
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SSDEEP
768:bX0ZDcZyUpULCgo2aj96ayXbQzTZ/9f++QQQEbbbbN:QZDc/pULCH2yRyXkzq+QQQEbbbbN
Malware Config
Signatures
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Detects Windows executables referencing non-Windows User-Agents 1 IoCs
resource yara_rule sample INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
UPX dump on OEP (original entry point) 1 IoCs
resource yara_rule sample UPX -
resource yara_rule sample upx -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource a4a38c4cae0a03696b0442be30f77372403d3db8d5947febd713e865c1a690e6
Files
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a4a38c4cae0a03696b0442be30f77372403d3db8d5947febd713e865c1a690e6.exe windows:4 windows x86 arch:x86
6db8353c2b6461197c203cc61d20792e
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
Imports
kernel32
ExitProcess
Sleep
lstrcpyA
CreateProcessA
TerminateProcess
ExitThread
GetStartupInfoA
GetModuleHandleA
WaitForSingleObject
CreateFileA
SetFilePointer
WriteFile
lstrcpynA
lstrlenA
OpenMutexA
ReleaseMutex
GetComputerNameA
GetCurrentProcess
GetCurrentThread
CloseHandle
CreateThread
LoadLibraryA
GetProcAddress
GetSystemDefaultUILanguage
GetTickCount
iphlpapi
GetIfTable
GetAdaptersInfo
mfc42
ord823
ord825
msvcrt
_controlfp
__set_app_type
__p__fmode
__p__commode
_adjust_fdiv
__setusermatherr
_initterm
__getmainargs
_acmdln
exit
_XcptFilter
_exit
strncmp
_except_handler3
strstr
strcspn
strncpy
atoi
time
srand
rand
realloc
free
malloc
sprintf
shell32
SHChangeNotify
ShellExecuteExA
ShellExecuteA
shlwapi
SHDeleteKeyA
user32
GetDesktopWindow
wsprintfA
ws2_32
setsockopt
recv
__WSAFDIsSet
select
WSAIoctl
closesocket
WSAStartup
inet_ntoa
htonl
WSACleanup
socket
connect
send
inet_addr
sendto
htons
Sections
UPX0 Size: 68KB - Virtual size: 68KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 12KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 72KB - Virtual size: 72KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE