_mexFunction
Static task
static1
Behavioral task
behavioral1
Sample
virussign.com_efb6f850f8d39a8bf3ab4eaef1ead540.dll
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
virussign.com_efb6f850f8d39a8bf3ab4eaef1ead540.dll
Resource
win10v2004-20240426-en
General
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Target
virussign.com_efb6f850f8d39a8bf3ab4eaef1ead540.vir
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Size
12KB
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MD5
efb6f850f8d39a8bf3ab4eaef1ead540
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SHA1
629aefcd4af26036e2b7ecf71b727ca2270798ea
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SHA256
69c53b83086c46d78def803dfe01e8c324b02c514c4c9ecba08f1c7d8b0cb85c
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SHA512
c8b0ba5919bc90860eb743b905704a19e10a63974eaa6943504f8ed34bdebb17f3e247441e1b3938f31db8875887694a98cdceab56f2e7f62a299e891ae513f6
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SSDEEP
192:lWINtqRJL7HTW8W2ria2uHM/4WoVjKrWliFcHLYggYYUXb85ybO:lWR3TW8dB2+M/4W1rVwLYggXg85yb
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource virussign.com_efb6f850f8d39a8bf3ab4eaef1ead540.vir
Files
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virussign.com_efb6f850f8d39a8bf3ab4eaef1ead540.vir.dll windows:1 windows x86 arch:x86
6d376fd25e1078164ade73d96160d402
Headers
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL
Imports
libmx
mxCreateNumericArray_700
mxGetData
mxGetPr
mxIsNaN
libmex
mexAtExit
mexErrMsgIdAndTxt
libemlrt
emlrtBreakCheck
emlrtFirstTime
emlrtReturnArrayR2009a
emlrtCheckBuiltIn
emlrtClearAllocCount
emlrtAlias
emlrtAliasP
emlrtAssign
emlrtBoundsCheck
emlrtDestroyArray
libmwblascompat32
ddot32
libmwmathutil
muDoubleScalarCeil
muDoubleScalarFloor
muDoubleScalarAbs
kernel32
ExitProcess
GetEnvironmentStringsA
RtlUnwind
msvcrt
_fdopen
_open_osfhandle
fclose
malloc
printf
raise
setbuf
strcpy
Exports
Exports
Sections
.text Size: 5KB - Virtual size: 5KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 84B - Virtual size: 84B
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_READ
.data Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 372B - Virtual size: 372B
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_DISCARDABLE
.edata Size: 92B - Virtual size: 92B
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_READ