vidar | stealc[.]zip

Resubmissions

23-05-2024 04:34

240523-e7hedaea69 10

23-05-2024 04:27

240523-e26vsadh42 10

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General

Target

stealc.zip
Size

106KB
MD5

3692aa0c319544910a6dff28f110dc8f
SHA1

79492dcff0fa673137732eed078ee54a1493fd8d
SHA256

5b29e4998c31983a505873b082755d1d375192dfe5bb2f9bb92aeb05e01b7660
SHA512

109e2411193bc05b42bae65d6546c13c34c7a049fa2f624301ecb9e18d172356c62575fa5924d5164f9fd6b23328da69caf5b29888aa1a236b31316240f7ff5e
SSDEEP

3072:5neLUg6lR3b0DiVWg9II+K44D7a/alSy85gxoqFpj:5neLUb3bt5Tn7a/alSyfyspj

Score

10^/10

stealer vidar stealc

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 1 IoCs

stealer

Processes:

resource	yara_rule
static1/unpack001/fe4ca7d7b713dd306597e33a8dd686706843542911fea4ef54941857b10219c1	family_vidar_v7

Stealc family
stealc
Vidar family
vidar

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

Processes:

resource
unpack001/fe4ca7d7b713dd306597e33a8dd686706843542911fea4ef54941857b10219c1

Files

stealc.zip
.zip

Password: infected
fe4ca7d7b713dd306597e33a8dd686706843542911fea4ef54941857b10219c1
.exe windows:5 windows x86 arch:x86

Password: infected

a34c7216d6536a950566187b3d5a3285

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

msvcrt

_EH_prolog
__CxxFrameHandler3
memcmp
memchr
strncpy
malloc
_wtoi64
atexit
??_V@YAXPAX@Z
memset
strcpy_s
strtok_s
memmove
strchr
memcpy
strcat
??_U@YAPAXI@Z
wcslen
strlen

kernel32

IsProcessorFeaturePresent
LoadLibraryW
ExitProcess
GetCurrentProcess
HeapAlloc
GetProcessHeap
lstrlenA
HeapFree
ReadProcessMemory
VirtualQueryEx
GetComputerNameA
FileTimeToSystemTime
CloseHandle
WaitForSingleObject
CreateThread
GetDriveTypeA
GetLogicalDriveStringsA
CreateDirectoryA
LoadLibraryA
GetStringTypeW
Sleep
MultiByteToWideChar
LCMapStringW
WideCharToMultiByte
GetModuleFileNameW
GetStdHandle
GetProcAddress
GetCurrentThreadId
SetLastError
GetModuleHandleW
OpenProcess
RaiseException
EncodePointer
GetLastError
DecodePointer
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsDebuggerPresent
TerminateProcess
InitializeCriticalSectionAndSpinCount
LeaveCriticalSection
EnterCriticalSection
RtlUnwind
GetCPInfo
InterlockedIncrement
InterlockedDecrement
GetACP
GetOEMCP
IsValidCodePage
TlsGetValue
TlsSetValue
WriteFile

user32

wsprintfW
CharToOemA

advapi32

RegGetValueA
GetCurrentHwProfileA
RegOpenKeyExA
GetUserNameA

shell32

SHFileOperationA

ole32

CoSetProxyBlanket
CoInitializeSecurity
CoInitializeEx
CoCreateInstance

oleaut32

VariantInit
SysAllocString
SysFreeString
VariantClear

shlwapi

ord155

crypt32

CryptStringToBinaryA

Sections

.text
Size: 132KB - Virtual size: 132KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2.1MB - Virtual size: 2.1MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 20KB - Virtual size: 20KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Resubmissions

Sharing

General

Malware Config

Extracted

Signatures

Files

Password: infected

Password: infected

a34c7216d6536a950566187b3d5a3285

Headers

DLL Characteristics

File Characteristics

Imports

msvcrt

kernel32

user32

advapi32

shell32

ole32

oleaut32

shlwapi

crypt32

Sections

.text Size: 132KB - Virtual size: 132KB

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

.data Size: 2.1MB - Virtual size: 2.1MB

.reloc Size: 20KB - Virtual size: 20KB

.text
Size: 132KB - Virtual size: 132KB

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

.data
Size: 2.1MB - Virtual size: 2.1MB

.reloc
Size: 20KB - Virtual size: 20KB