SlimWin[.]7z | Triage

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General

Target

SlimWin.7z
Size

670KB
MD5

436631a4f4e47511ee280d9ba7715d5f
SHA1

ec720e846000525712a9d4ae504bd645a326d6a7
SHA256

c69d2404e2a9612e85dea8564bc995db41962603d4ea1530883cfa0f8e7b2a2f
SHA512

3c6309e1e568fed93ddb0e1643056b01c6aaf1abf4375ef62ef2b8e67b299dd51ba10f9fa15069145f19403fb4c3937bc5cbc37e19cabcba0135d376c386a480
SSDEEP

12288:B7oNDD8W8+DcGCKJWclOws4X1iZ9pYcKt3tX8oezk/tSgIlWF:hqD8ADEjHK4ZYBt3985kFjh

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 3 IoCs

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

upx

resource	yara_rule
static1/unpack001/exe/ntregopt.exe	upx
static1/unpack001/exe/reshacker.exe	upx
static1/unpack001/exe/upx.exe	upx

Unsigned PE 5 IoCs

Checks for missing Authenticode signature.

resource
unpack001/exe/ntregopt.exe
unpack002/out.upx
unpack001/exe/reshacker.exe
unpack003/out.upx
unpack001/exe/upx.exe

Files

SlimWin.7z
.7z

Password: mysubsarethebest
1.bat
2.bat
3.bat
exe/NTREGOPT.LOC
exe/ntregopt.exe
.exe windows:1 windows x86

Password: mysubsarethebest

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Sections

UPX0
Size: - Virtual size: 216KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 126KB - Virtual size: 128KB

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:1 windows x86

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Sections

CODE
Size: 277KB - Virtual size: 277KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

DATA
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

BSS
Size: - Virtual size: 2KB

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 8KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: - Virtual size: 16B

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 19KB - Virtual size: 19KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
exe/reshacker.exe
.exe windows:1 windows x86

Password: mysubsarethebest

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Sections

UPX0
Size: - Virtual size: 520KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 281KB - Virtual size: 284KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows:1 windows x86

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Sections

CODE
Size: 670KB - Virtual size: 670KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

DATA
Size: 7KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

BSS
Size: - Virtual size: 2KB

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 10KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: - Virtual size: 8B

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 36KB - Virtual size: 35KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 48KB - Virtual size: 48KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
exe/upx.exe
.exe windows:4 windows x86

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DEBUG_STRIPPED

Sections

UPX0
Size: - Virtual size: 1.0MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 263KB - Virtual size: 264KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
reg.bat
.bat .vbs

Sharing

General

Malware Config

Signatures

Files

Password: mysubsarethebest

Password: mysubsarethebest

Headers

File Characteristics

Sections

UPX0 Size: - Virtual size: 216KB

UPX1 Size: 126KB - Virtual size: 128KB

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

Headers

File Characteristics

Sections

CODE Size: 277KB - Virtual size: 277KB

DATA Size: 3KB - Virtual size: 3KB

BSS Size: - Virtual size: 2KB

.idata Size: 8KB - Virtual size: 8KB

.tls Size: - Virtual size: 16B

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

.reloc Size: 19KB - Virtual size: 19KB

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

Password: mysubsarethebest

Headers

File Characteristics

Sections

UPX0 Size: - Virtual size: 520KB

UPX1 Size: 281KB - Virtual size: 284KB

.rsrc Size: 1KB - Virtual size: 4KB

Headers

File Characteristics

Sections

CODE Size: 670KB - Virtual size: 670KB

DATA Size: 7KB - Virtual size: 7KB

BSS Size: - Virtual size: 2KB

.idata Size: 10KB - Virtual size: 9KB

.tls Size: - Virtual size: 8B

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

.reloc Size: 36KB - Virtual size: 35KB

.rsrc Size: 48KB - Virtual size: 48KB

Headers

File Characteristics

Sections

UPX0 Size: - Virtual size: 1.0MB

UPX1 Size: 263KB - Virtual size: 264KB

.rsrc Size: 1KB - Virtual size: 4KB

UPX0
Size: - Virtual size: 216KB

UPX1
Size: 126KB - Virtual size: 128KB

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

CODE
Size: 277KB - Virtual size: 277KB

DATA
Size: 3KB - Virtual size: 3KB

BSS
Size: - Virtual size: 2KB

.idata
Size: 8KB - Virtual size: 8KB

.tls
Size: - Virtual size: 16B

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

.reloc
Size: 19KB - Virtual size: 19KB

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

UPX0
Size: - Virtual size: 520KB

UPX1
Size: 281KB - Virtual size: 284KB

.rsrc
Size: 1KB - Virtual size: 4KB

CODE
Size: 670KB - Virtual size: 670KB

DATA
Size: 7KB - Virtual size: 7KB

BSS
Size: - Virtual size: 2KB

.idata
Size: 10KB - Virtual size: 9KB

.tls
Size: - Virtual size: 8B

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

.reloc
Size: 36KB - Virtual size: 35KB

.rsrc
Size: 48KB - Virtual size: 48KB

UPX0
Size: - Virtual size: 1.0MB

UPX1
Size: 263KB - Virtual size: 264KB

.rsrc
Size: 1KB - Virtual size: 4KB