SummerAfternoon[.]zip

Resubmissions

09/06/2024, 07:13

240609-h18jrsgb74 8

09/06/2024, 06:51

240609-hmrn4afh72 8

Sharing

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General

Target

SummerAfternoon.zip
Size

292KB
MD5

b88a5e0953060332114c9cd884463f41
SHA1

e5d8253d475b5eaa47acad8821490e469946c1bc
SHA256

7af523d7bd6711f0003e519c5480c5b95416ce61d098df26ae3f046f769d8aad
SHA512

6ba320eebc1aa2cddcff49169d8f083da49b0f4bd2d12601c791cb1664d5d69c749071e80271f80fb55cd71d9795618c7a63770e0c8f335e26c0e6942967d3d1
SSDEEP

6144:5L/Kwmd/asOjJLsdG8BbnbyIaXx9lwi4aX7o+zl3Afz4/D8hA/3/+j:JSwEysa+pBbnmF9qi4aEPz5hA/P+j

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/SummerAfternoon/SummerAfternoon.exe

Files

SummerAfternoon.zip
.zip
SummerAfternoon/Microsoft.Web.WebView2.Core.dll
.dll windows:4 windows x86 arch:x86

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:03:a5:41:11:e8:f0:7f:be:0b:75:00:00:00:00:03:a5
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2023, 19:51

Not After

16/10/2024, 19:51

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

54:d7:5f:3a:d9:aa:8d:e0:4f:8a:f5:b0:6d:04:ae:fc:b0:90:c8:c1:e1:3c:04:6d:fa:3c:72:92:9f:7c:a8:82
Signer

Actual PE Digest

54:d7:5f:3a:d9:aa:8d:e0:4f:8a:f5:b0:6d:04:ae:fc:b0:90:c8:c1:e1:3c:04:6d:fa:3c:72:92:9f:7c:a8:82

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

PDB Paths

D:\a\_work\1\s\third_party\edge_webview2\win\webview2_api_writer\dotNetAPIWrapper\Microsoft.Web.WebView2.Core\bin\ReleasePackage\Microsoft.Web.WebView2.Core.pdb

Imports

mscoree

_CorDllMain

Sections

.text
Size: 545KB - Virtual size: 545KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1024B - Virtual size: 1000B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
SummerAfternoon/Microsoft.Web.WebView2.WinForms.dll
.dll windows:4 windows x86 arch:x86

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:03:a4:cb:e3:56:b8:cb:7f:e4:27:00:00:00:00:03:a4
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2023, 19:51

Not After

16/10/2024, 19:51

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

e0:82:e7:ee:2f:85:b6:33:47:3d:9d:08:de:bb:61:16:af:d2:b0:b0:0f:0f:ca:51:7c:df:0f:46:fd:cc:02:bd
Signer

Actual PE Digest

e0:82:e7:ee:2f:85:b6:33:47:3d:9d:08:de:bb:61:16:af:d2:b0:b0:0f:0f:ca:51:7c:df:0f:46:fd:cc:02:bd

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

PDB Paths

D:\a\_work\1\s\third_party\edge_webview2\win\winforms_control\Microsoft.Web.WebView2.WinForms\obj\Release Stable APIs\net462\Microsoft.Web.WebView2.WinForms.pdb

Imports

mscoree

_CorDllMain

Sections

.text
Size: 25KB - Virtual size: 24KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
SummerAfternoon/SummerAfternoon.exe
.exe windows:4 windows x64 arch:x64

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

F:\Csharp\WebLauncher\WebLauncher\obj\Release\WebLauncher.pdb

Sections

.text
Size: 99KB - Virtual size: 98KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
SummerAfternoon/runtimes/win-x64/native/WebView2Loader.dll
.dll windows:10 windows x64 arch:x64

f6946d311bccc86e2042a388e375de41

Code Sign

33:00:00:03:a5:41:11:e8:f0:7f:be:0b:75:00:00:00:00:03:a5
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2023, 19:51

Not After

16/10/2024, 19:51

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

91:d5:76:b5:70:67:38:de:13:42:4f:d7:e3:ba:32:9e:4f:cf:f0:8e:b7:95:fa:6d:98:99:29:80:84:ba:db:0c
Signer

Actual PE Digest

91:d5:76:b5:70:67:38:de:13:42:4f:d7:e3:ba:32:9e:4f:cf:f0:8e:b7:95:fa:6d:98:99:29:80:84:ba:db:0c

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

PDB Paths

D:\a\_work\e\src\out\Release_x64\WebView2Loader.dll.pdb

Imports

kernel32

AcquireSRWLockExclusive
CloseHandle
CreateFileW
DeleteCriticalSection
EncodePointer
EnterCriticalSection
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetEnvironmentStringsW
GetEnvironmentVariableW
GetFileAttributesW
GetFileType
GetLastError
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemInfo
GetSystemTimeAsFileTime
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeSListHead
InterlockedFlushSList
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
LCMapStringW
LeaveCriticalSection
LoadLibraryExA
LoadLibraryExW
LoadLibraryW
MultiByteToWideChar
OutputDebugStringA
OutputDebugStringW
QueryPerformanceCounter
RaiseException
ReleaseSRWLockExclusive
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwindEx
RtlVirtualUnwind
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
SleepConditionVariableSRW
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
VirtualProtect
VirtualQuery
WakeAllConditionVariable
WideCharToMultiByte
WriteConsoleW
WriteFile

Exports

Exports

CompareBrowserVersions
CreateCoreWebView2Environment
CreateCoreWebView2EnvironmentWithOptions
GetAvailableCoreWebView2BrowserVersionString
GetAvailableCoreWebView2BrowserVersionStringWithOptions

Sections

.text
Size: 87KB - Virtual size: 86KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 45KB - Virtual size: 45KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 5KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.retplne
Size: 512B - Virtual size: 140B

.tls
Size: 512B - Virtual size: 9B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

_RDATA
Size: 512B - Virtual size: 500B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Resubmissions

Sharing

General

Malware Config

Signatures

Files

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:03:a5:41:11:e8:f0:7f:be:0b:75:00:00:00:00:03:a5Certificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

54:d7:5f:3a:d9:aa:8d:e0:4f:8a:f5:b0:6d:04:ae:fc:b0:90:c8:c1:e1:3c:04:6d:fa:3c:72:92:9f:7c:a8:82Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

mscoree

Sections

.text Size: 545KB - Virtual size: 545KB

.rsrc Size: 1024B - Virtual size: 1000B

.reloc Size: 512B - Virtual size: 12B

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:03:a4:cb:e3:56:b8:cb:7f:e4:27:00:00:00:00:03:a4Certificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

e0:82:e7:ee:2f:85:b6:33:47:3d:9d:08:de:bb:61:16:af:d2:b0:b0:0f:0f:ca:51:7c:df:0f:46:fd:cc:02:bdSigner

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

mscoree

Sections

.text Size: 25KB - Virtual size: 24KB

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

.reloc Size: 512B - Virtual size: 12B

Headers

DLL Characteristics

File Characteristics

PDB Paths

Sections

.text Size: 99KB - Virtual size: 98KB

.rsrc Size: 6KB - Virtual size: 5KB

f6946d311bccc86e2042a388e375de41

Code Sign

33:00:00:03:a5:41:11:e8:f0:7f:be:0b:75:00:00:00:00:03:a5Certificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

91:d5:76:b5:70:67:38:de:13:42:4f:d7:e3:ba:32:9e:4f:cf:f0:8e:b7:95:fa:6d:98:99:29:80:84:ba:db:0cSigner

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

Exports

Exports

Sections

.text Size: 87KB - Virtual size: 86KB

.rdata Size: 45KB - Virtual size: 45KB

.data Size: 3KB - Virtual size: 7KB

.pdata Size: 5KB - Virtual size: 5KB

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

.retplne Size: 512B - Virtual size: 140B

.tls Size: 512B - Virtual size: 9B

_RDATA Size: 512B - Virtual size: 500B

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

.reloc Size: 2KB - Virtual size: 1KB

33:00:00:03:a5:41:11:e8:f0:7f:be:0b:75:00:00:00:00:03:a5
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

54:d7:5f:3a:d9:aa:8d:e0:4f:8a:f5:b0:6d:04:ae:fc:b0:90:c8:c1:e1:3c:04:6d:fa:3c:72:92:9f:7c:a8:82
Signer

.text
Size: 545KB - Virtual size: 545KB

.rsrc
Size: 1024B - Virtual size: 1000B

.reloc
Size: 512B - Virtual size: 12B

33:00:00:03:a4:cb:e3:56:b8:cb:7f:e4:27:00:00:00:00:03:a4
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

e0:82:e7:ee:2f:85:b6:33:47:3d:9d:08:de:bb:61:16:af:d2:b0:b0:0f:0f:ca:51:7c:df:0f:46:fd:cc:02:bd
Signer

.text
Size: 25KB - Virtual size: 24KB

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

.reloc
Size: 512B - Virtual size: 12B

.text
Size: 99KB - Virtual size: 98KB

.rsrc
Size: 6KB - Virtual size: 5KB

33:00:00:03:a5:41:11:e8:f0:7f:be:0b:75:00:00:00:00:03:a5
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

91:d5:76:b5:70:67:38:de:13:42:4f:d7:e3:ba:32:9e:4f:cf:f0:8e:b7:95:fa:6d:98:99:29:80:84:ba:db:0c
Signer

.text
Size: 87KB - Virtual size: 86KB

.rdata
Size: 45KB - Virtual size: 45KB

.data
Size: 3KB - Virtual size: 7KB

.pdata
Size: 5KB - Virtual size: 5KB

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

.retplne
Size: 512B - Virtual size: 140B

.tls
Size: 512B - Virtual size: 9B

_RDATA
Size: 512B - Virtual size: 500B

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

.reloc
Size: 2KB - Virtual size: 1KB