zlibs[.]dll | Triage

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General

Target

zlibs.dll
Size

402KB
MD5

4ec0c04c50a029c29c076eade48f9bae
SHA1

2a59f45a98fbb4c35b8c06955c12ddf58c7544ba
SHA256

5f37e1ca62b1a0a6bf1df0162566f775a156eb23e36a9985b8525f7a3dfb745d
SHA512

96d34122da12faff58b313b7ecfad66a17db92b1334b0c1aeeca42f81a762651c2f24105dfa86af9d9ad02abd4c55408e0d022790839b5fb5d30c3009f2fa555
SSDEEP

12288:KM9O5geN9BclTNAad6J89LGpp38JQf0jpOqfE:+BclT1d6m9LK38JxjpE

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
zlibs.dll

Files

zlibs.dll
.dll windows x86

38bac97cf682f684639e4f5ba8505806

Headers

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DEBUG_STRIPPED
IMAGE_FILE_DLL

Imports

kernel32

DeleteCriticalSection
EnterCriticalSection
GetLastError
GetModuleHandleA
GetProcAddress
InitializeCriticalSection
InterlockedExchange
IsDBCSLeadByteEx
LeaveCriticalSection
MultiByteToWideChar
Sleep
TlsGetValue
VirtualProtect
VirtualQuery
WideCharToMultiByte

msvcrt

_close
_open
_read
_write
__dllonexit
__mb_cur_max
_errno
_iob
_lseeki64
_vsnprintf
_wopen
abort
atoi
calloc
fflush
fputc
free
fwrite
getenv
localeconv
malloc
memchr
memcpy
setlocale
strchr
strerror
strlen
vfprintf
wcslen
wcstombs

Exports

Exports

adler32
adler32_combine
adler32_combine64
compress
compress2
compressBound
crc32
crc32_combine
crc32_combine64
deflate
deflateBound
deflateCopy
deflateEnd
deflateInit2_
deflateInit_
deflateParams
deflatePending
deflatePrime
deflateReset
deflateResetKeep
deflateSetDictionary
deflateSetHeader
deflateTune
get_crc_table
gzbuffer
gzclearerr
gzclose
gzclose_r
gzclose_w
gzdirect
gzdopen
gzeof
gzerror
gzflush
gzgetc
gzgetc_
gzgets
gzoffset
gzoffset64
gzopen
gzopen64
gzopen_w
gzprintf
gzputc
gzputs
gzread
gzrewind
gzseek
gzseek64
gzsetparams
gztell
gztell64
gzungetc
gzvprintf
gzwrite
inflate
inflateBack
inflateBackEnd
inflateBackInit_
inflateCopy
inflateEnd
inflateGetDictionary
inflateGetHeader
inflateInit2_
inflateInit_
inflateMark
inflatePrime
inflateReset
inflateReset2
inflateResetKeep
inflateSetDictionary
inflateSync
inflateSyncPoint
inflateUndermine
uncompress
zError
zlibCompileFlags
zlibVersion

Sections

.text
Size: 77KB - Virtual size: 76KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 92B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 19KB - Virtual size: 18KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.eh_fram
Size: 11KB - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 2KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.edata
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.idata
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 24B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 32B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 288KB - Virtual size: 287KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

38bac97cf682f684639e4f5ba8505806

Headers

File Characteristics

Imports

kernel32

msvcrt

Exports

Exports

Sections

.text Size: 77KB - Virtual size: 76KB

.data Size: 512B - Virtual size: 92B

.rdata Size: 19KB - Virtual size: 18KB

.eh_fram Size: 11KB - Virtual size: 10KB

.bss Size: - Virtual size: 2KB

.edata Size: 2KB - Virtual size: 1KB

.idata Size: 1KB - Virtual size: 1KB

.CRT Size: 512B - Virtual size: 24B

.tls Size: 512B - Virtual size: 32B

.rsrc Size: 288KB - Virtual size: 287KB

.reloc Size: 1KB - Virtual size: 1KB

.text
Size: 77KB - Virtual size: 76KB

.data
Size: 512B - Virtual size: 92B

.rdata
Size: 19KB - Virtual size: 18KB

.eh_fram
Size: 11KB - Virtual size: 10KB

.bss
Size: - Virtual size: 2KB

.edata
Size: 2KB - Virtual size: 1KB

.idata
Size: 1KB - Virtual size: 1KB

.CRT
Size: 512B - Virtual size: 24B

.tls
Size: 512B - Virtual size: 32B

.rsrc
Size: 288KB - Virtual size: 287KB

.reloc
Size: 1KB - Virtual size: 1KB