WindowsUpdate[.]exe

General

Target

WindowsUpdate.exe
Size

5.9MB
MD5

45d5e14b9d572090d819b9ccb1f3a665
SHA1

8f6fdae40399f1b416fd16dcfe0936602597a598
SHA256

0939c13f5c6e2f05b7ca570d59aae770a2464cf040c23a5d48e075a4aa8736e0
SHA512

fd7a13484b13ad8807f322ed041f8bcacdc0e398cc38e796cb13b5fd90dc712899388d3d4460eb7391be67449c39e05ead0b5735fcab00a4c30dc5ccdb13c1ff
SSDEEP

98304:cqpcL8zufkRuAlUjFOrrG6crEPI+xqm95OnE7sQio65IVjXxBZTMTdNe7uSc/nNh:TpcLAwyFlURGTc8Xqmz77sQioaIZx7aK

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
sample	upx

Unsigned PE 2 IoCs

Checks for missing Authenticode signature.

resource
WindowsUpdate.exe
unpack001/out.upx

Files

WindowsUpdate.exe
.exe windows:6 windows x64 arch:x64

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Sections

UPX0
Size: - Virtual size: 13.3MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 5.9MB - Virtual size: 5.9MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX2
Size: 512B - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows:6 windows x64 arch:x64

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Sections

.text
Size: 10.6MB - Virtual size: 10.6MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 7.5MB - Virtual size: 7.5MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 820KB - Virtual size: 820KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 180KB - Virtual size: 180KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.symtab
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 13.3MB

UPX1 Size: 5.9MB - Virtual size: 5.9MB

UPX2 Size: 512B - Virtual size: 4KB

Headers

DLL Characteristics

File Characteristics

Sections

.text Size: 10.6MB - Virtual size: 10.6MB

.rdata Size: 7.5MB - Virtual size: 7.5MB

.data Size: 820KB - Virtual size: 820KB

.idata Size: 4KB - Virtual size: 4KB

.reloc Size: 180KB - Virtual size: 180KB

.symtab Size: 4KB - Virtual size: 4KB

UPX0
Size: - Virtual size: 13.3MB

UPX1
Size: 5.9MB - Virtual size: 5.9MB

UPX2
Size: 512B - Virtual size: 4KB

.text
Size: 10.6MB - Virtual size: 10.6MB

.rdata
Size: 7.5MB - Virtual size: 7.5MB

.data
Size: 820KB - Virtual size: 820KB

.idata
Size: 4KB - Virtual size: 4KB

.reloc
Size: 180KB - Virtual size: 180KB

.symtab
Size: 4KB - Virtual size: 4KB