WK_inf[.]exe | Triage

General

Target

WK_inf.exe
Size

4.4MB
MD5

4df7aa24146be717694b454cf6ae40f8
SHA1

ca42784ecd81cb4ed19c06e5d450be6119187c02
SHA256

a91d95ab297a36c409a76a602c8b12a175503dfb33027954dfba6eb53acf8c12
SHA512

6a70729074a5e75e45939aa4b1e144c1ba7c221a7b2a54139853bddba49bfca71a709810972f6dfa4618f34840bf2c1c048e207d55763b433f28714ddab9f44f
SSDEEP

49152:8M7hHMjCsOlZlfnvRtrSEXmXAj0pTcvtM3oFTnADR1Q5YfmAF13EUWdXt7ZTKYIO:/sjW5vRcsjaoxEjgYOxRbdtCM

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
WK_inf.exe
unpack001/out.upx

Files

WK_inf.exe
.exe windows:6 windows x86 arch:x86

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Sections

UPX0
Size: - Virtual size: 6.9MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 4.4MB - Virtual size: 4.4MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1024B - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows:6 windows x86 arch:x86

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Sections

.text
Size: 4.0MB - Virtual size: 4.0MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 6.6MB - Virtual size: 6.6MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 293KB - Virtual size: 485KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 195KB - Virtual size: 194KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.symtab
Size: 512B - Virtual size: 4B

IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1024B - Virtual size: 832B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 6.9MB

UPX1 Size: 4.4MB - Virtual size: 4.4MB

.rsrc Size: 1024B - Virtual size: 4KB

Headers

DLL Characteristics

File Characteristics

Sections

.text Size: 4.0MB - Virtual size: 4.0MB

.rdata Size: 6.6MB - Virtual size: 6.6MB

.data Size: 293KB - Virtual size: 485KB

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

.reloc Size: 195KB - Virtual size: 194KB

.symtab Size: 512B - Virtual size: 4B

.rsrc Size: 1024B - Virtual size: 832B

UPX0
Size: - Virtual size: 6.9MB

UPX1
Size: 4.4MB - Virtual size: 4.4MB

.rsrc
Size: 1024B - Virtual size: 4KB

.text
Size: 4.0MB - Virtual size: 4.0MB

.rdata
Size: 6.6MB - Virtual size: 6.6MB

.data
Size: 293KB - Virtual size: 485KB

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

.reloc
Size: 195KB - Virtual size: 194KB

.symtab
Size: 512B - Virtual size: 4B

.rsrc
Size: 1024B - Virtual size: 832B