Static task
static1
Behavioral task
behavioral1
Sample
RegExpFileRename.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
RegExpFileRename.exe
Resource
win10v2004-20231215-en
General
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Target
febbec6ea8faa66ab8c8bcb1fe17ed17
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Size
16KB
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MD5
febbec6ea8faa66ab8c8bcb1fe17ed17
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SHA1
1d14043ef70df99b0bd2c50aa249d923904c6a37
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SHA256
c9dd8c8fddf3bf83acb83e0f6aae0579e58176cacfe9ffc9c03ebe0263efaf6e
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SHA512
94939f1c9f1014d1a60c73addcfadeed791326580b1119ef4125b63e363b83fa7a3c99e294efe7eb8df0090828797aa6a200caf70133438961a66fdeb347a18b
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SSDEEP
384:vdABdKIq32c9yasj+2bgCEJN/8MhB95EAk0DUK1pbeu6:VAB98/sjCCEJBrhBdNDUKrba
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/RegExpFileRename.exe
Files
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febbec6ea8faa66ab8c8bcb1fe17ed17.zip
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RegExpFileRename.exe.exe windows:4 windows x86 arch:x86
0df156cc196190c34440a71c6e3eadd3
Headers
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
msvcr80
_crt_debugger_hook
__CxxExceptionFilter
__CxxRegisterExceptionObject
__CxxDetectRethrow
_except_handler4_common
__CxxUnregisterExceptionObject
_cexit
_amsg_exit
__set_app_type
_XcptFilter
__wgetmainargs
_configthreadlocale
__p__commode
__p__fmode
_encoded_null
__FrameUnwindFilter
_decode_pointer
_onexit
_lock
__dllonexit
_unlock
__CxxQueryExceptionSize
_encode_pointer
kernel32
Sleep
QueryPerformanceCounter
GetTickCount
GetCurrentThreadId
GetCurrentProcessId
GetSystemTimeAsFileTime
GetModuleHandleA
IsDebuggerPresent
TerminateProcess
GetCurrentProcess
UnhandledExceptionFilter
SetUnhandledExceptionFilter
msvcm80
?DoDllLanguageSupportValidation@<CrtImplementationDetails>@@YAXXZ
__setusermatherr_m
?ThrowModuleLoadException@<CrtImplementationDetails>@@YAXP$AAVString@System@@@Z
?ThrowNestedModuleLoadException@<CrtImplementationDetails>@@YAXP$AAVException@System@@0@Z
?DoCallBackInDefaultDomain@<CrtImplementationDetails>@@YAXP6GJPAX@Z0@Z
?RegisterModuleUninitializer@<CrtImplementationDetails>@@YAXP$AAVEventHandler@System@@@Z
?ThrowModuleLoadException@<CrtImplementationDetails>@@YAXP$AAVString@System@@P$AAVException@3@@Z
mscoree
_CorExeMain
Sections
.text Size: 8KB - Virtual size: 7KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 27KB - Virtual size: 27KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 476B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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readme.txt