UltraDropper[.]exe

Sharing

Copy URL Twitter E-mail

General

Target
UltraDropper.exe
Size 57KB
Sample240531-jb19tsbc2w
SHA256 159c8fedb002cf211f16f820bf82be9db65662379c7e75fba5f8fc38cd0090e1
MD5 ededb3f015ef786127135167bcef4012
SHA1 1423eca9f232f5bd62f1350359ce20e20115104d
SHA512 bfb18e621acfb5bbdac525ca8f94a7bca51ceaed03927cccc4cd15f272c87d9f9c00561bb6d53dcbb05d5c3457bb2b7df6c4bdaff95c416f58c3c75ab7ce492e
SSDEEP 768:cUctn7EWvq3fRzEuu7+1p3hdj6A4Pa6k42SXTqOW7xQ8VORH:qnGfhdhduAia6jer7xQ8Vs
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
UltraDropper.exe

File Explorer

UltraDropper.exe

.exe 57KB

UltraDropper.exe

IMPHASH e27d44829ec001e1ec383b35fc0c3fe6
SHA256 159c8fedb002cf211f16f820bf82be9db65662379c7e75fba5f8fc38cd0090e1
MD5 ededb3f015ef786127135167bcef4012
SHA1 1423eca9f232f5bd62f1350359ce20e20115104d
SHA512 bfb18e621acfb5bbdac525ca8f94a7bca51ceaed03927cccc4cd15f272c87d9f9c00561bb6d53dcbb05d5c3457bb2b7df6c4bdaff95c416f58c3c75ab7ce492e
SSDEEP 768:cUctn7EWvq3fRzEuu7+1p3hdj6A4Pa6k42SXTqOW7xQ8VORH:qnGfhdhduAia6jer7xQ8Vs
MD5 SHA1 SHA512 SSDEEP

windows:4 windows x86 arch:x86

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

4318

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_32BIT_MACHINE

PDB paths

kernel32

DeleteCriticalSection EnterCriticalSection FreeLibrary GetEnvironmentVariableA GetLastError GetModuleHandleA GetProcAddress GetStartupInfoA InitializeCriticalSection LeaveCriticalSection LoadLibraryA SetUnhandledExceptionFilter Sleep TlsGetValue VirtualProtect VirtualQuery WinExec

api-ms-win-crt-environment-l1-1-0

__p__environ __p__wenviron

api-ms-win-crt-heap-l1-1-0

_set_new_mode calloc free malloc

api-ms-win-crt-math-l1-1-0

__setusermatherr

api-ms-win-crt-private-l1-1-0

memcpy

api-ms-win-crt-runtime-l1-1-0

__p___argc __p___argv __p___wargv __p__acmdln _cexit _configure_narrow_argv _configure_wide_argv _crt_at_quick_exit _crt_atexit _initialize_narrow_environment _set_app_type _initialize_wide_environment _initterm _set_invalid_parameter_handler abort exit signal

api-ms-win-crt-stdio-l1-1-0

__acrt_iob_func __p__commode __p__fmode __stdio_common_vfprintf __stdio_common_vfwprintf __stdio_common_vsprintf fwrite

api-ms-win-crt-string-l1-1-0

memset strlen strncmp

api-ms-win-crt-time-l1-1-0

__daylight __timezone __tzname _tzset

user32

MessageBoxA

Name

.text

Size

7KB

Virtual Size

7KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.data

Size

512B

Virtual Size

120B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rdata

Size

4KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.bss

Size

Virtual Size

196B

Characteristics

IMAGE_SCN_CNT_UNINITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.idata

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.CRT

Size

512B

Virtual Size

48B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.tls

Size

512B

Virtual Size

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.reloc

Size

1024B

Virtual Size

588B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/14

Size

512B

Virtual Size

56B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/29

Size

3KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/41

Size

512B

Virtual Size

175B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/55

Size

512B

Virtual Size

160B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/67

Size

512B

Virtual Size

56B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/80

Size

512B

Virtual Size

119B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/91

Size

512B

Virtual Size

372B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

UltraDropper.exe

kernel32

api-ms-win-crt-environment-l1-1-0

api-ms-win-crt-heap-l1-1-0

api-ms-win-crt-math-l1-1-0

api-ms-win-crt-private-l1-1-0

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-string-l1-1-0

api-ms-win-crt-time-l1-1-0

user32

generic