avst[.]exe | Triage

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General

Target

avst.exe
Size

5.8MB
MD5

94cad7d26b9562c8380e35b32f63dce8
SHA1

7102c8cdef2130f3cb6b33f06e55f4ea974c9fca
SHA256

bb52c8ba0a223cfe2a007462efcca89d29cedd1ff1a1b03e7db6c8e464cc6797
SHA512

396c4d250a37da7a792332e2f25d4719318db54f896c6bf4b1d3f20c06b3ffc69e7ec16740b7d48a677f572c1fa8c6f57ddaa411fd8c97982e6d2842d2be458c
SSDEEP

98304:xp5ak2IBa3BPej8nH+/NY9+dgl1icZwXpeZIdCV1Ef+31N9ynEkwLCQbkId:xXmIIP8AHOpkI0V1Es1NEEka94A

Score

1^/10

Malware Config

Signatures

Files

avst.exe
.exe windows x86

24f4223e271413c25abad52fd456a9bc

Code Sign

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08
Certificate

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

22/10/2013, 12:00

Not After

22/10/2028, 12:00

Subject

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

02:5a:1b:f3:e3:89:23:83:82:53:71:90:d3:49:e5:6a
Certificate

Issuer

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

15/10/2019, 00:00

Not After

19/10/2022, 12:00

Subject

CN=Avast Software s.r.o.,OU=RE 999,O=Avast Software s.r.o.,L=Prague,C=CZ

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

61:1c:b2:8a:00:00:00:00:00:26
Certificate

Issuer

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

Not Before

15/04/2011, 19:41

Not After

15/04/2021, 19:51

Subject

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:dd
Certificate

Issuer

CN=DigiCert SHA2 Assured ID Timestamping CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

01/01/2021, 00:00

Not After

06/01/2031, 00:00

Subject

CN=DigiCert Timestamp 2021,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15
Certificate

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

07/01/2016, 12:00

Not After

07/01/2031, 12:00

Subject

CN=DigiCert SHA2 Assured ID Timestamping CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

c0:0d:19:e1:9e:46:1e:e8:47:97:35:1d:cc:0e:6f:3d:f9:9d:0b:53:43:6a:7f:a5:e7:ac:29:f2:2c:9b:72:69
Signer

Actual PE Digest

c0:0d:19:e1:9e:46:1e:e8:47:97:35:1d:cc:0e:6f:3d:f9:9d:0b:53:43:6a:7f:a5:e7:ac:29:f2:2c:9b:72:69

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

true

Verification

Signing Certificate

CN=Avast Software s.r.o.,OU=RE 999,O=Avast Software s.r.o.,L=Prague,C=CZ

28/03/2022, 11:03
Valid: true

Chain 1

CN=Avast Software s.r.o.,OU=RE 999,O=Avast Software s.r.o.,L=Prague,C=CZ

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

ExitProcess
SetFileAttributesW
Sleep
GetTickCount
CreateFileW
GetFileSize
GetModuleFileNameW
GetCurrentProcess
SetCurrentDirectoryW
GetFileAttributesW
SetEnvironmentVariableW
GetWindowsDirectoryW
GetTempPathW
GetCommandLineW
GetVersion
SetErrorMode
lstrlenW
lstrcpynW
CopyFileW
MoveFileW
GlobalLock
CreateThread
GetLastError
CreateDirectoryW
CreateProcessW
RemoveDirectoryW
lstrcmpiA
GetTempFileNameW
WriteFile
lstrcpyA
MoveFileExW
lstrcatW
GetSystemDirectoryW
GetProcAddress
GetModuleHandleA
GetExitCodeProcess
WaitForSingleObject
lstrcmpiW
lstrcmpW
GetFullPathNameW
GetShortPathNameW
SearchPathW
CompareFileTime
SetFileTime
CloseHandle
ExpandEnvironmentStringsW
GlobalFree
GlobalUnlock
GetDiskFreeSpaceW
GlobalAlloc
DeleteFileW
FindFirstFileW
FindNextFileW
FindClose
SetFilePointer
ReadFile
MulDiv
lstrlenA
WideCharToMultiByte
MultiByteToWideChar
WritePrivateProfileStringW
FreeLibrary
GetPrivateProfileStringW
GetModuleHandleW
LoadLibraryExW

user32

GetWindowRect
GetSystemMenu
SetClassLongW
IsWindowEnabled
SetWindowPos
GetSysColor
GetWindowLongW
SetCursor
LoadCursorW
CheckDlgButton
GetMessagePos
CallWindowProcW
IsWindowVisible
CloseClipboard
SetClipboardData
EmptyClipboard
OpenClipboard
TrackPopupMenu
ScreenToClient
EnableMenuItem
GetDlgItem
SetDlgItemTextW
GetDlgItemTextW
MessageBoxIndirectW
CharPrevW
CharNextA
wsprintfA
DispatchMessageW
PeekMessageW
GetDC
ReleaseDC
EnableWindow
InvalidateRect
SendMessageW
DefWindowProcW
BeginPaint
GetClientRect
FillRect
SystemParametersInfoW
EndDialog
RegisterClassW
DialogBoxParamW
CreateWindowExW
GetClassInfoW
DestroyWindow
CharNextW
ExitWindowsEx
SetWindowTextW
LoadImageW
SetTimer
ShowWindow
PostQuitMessage
wsprintfW
SetWindowLongW
FindWindowExW
IsWindow
CreatePopupMenu
AppendMenuW
GetSystemMetrics
DrawTextW
EndPaint
CreateDialogParamW
SendMessageTimeoutW
SetForegroundWindow

gdi32

SelectObject
SetTextColor
SetBkMode
CreateFontIndirectW
CreateBrushIndirect
DeleteObject
GetDeviceCaps
SetBkColor

shell32

ShellExecuteExW
SHGetPathFromIDListW
SHGetSpecialFolderLocation
SHGetFileInfoW
SHFileOperationW
SHBrowseForFolderW

advapi32

AdjustTokenPrivileges
RegCreateKeyExW
RegOpenKeyExW
SetFileSecurityW
OpenProcessToken
LookupPrivilegeValueW
RegEnumValueW
RegDeleteKeyW
RegDeleteValueW
RegCloseKey
RegSetValueExW
RegQueryValueExW
RegEnumKeyW

comctl32

ImageList_Create
ImageList_AddMasked
ord17
ImageList_Destroy

ole32

OleUninitialize
OleInitialize
CoTaskMemFree
CoCreateInstance

Sections

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

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 1KB - Virtual size: 128KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.ndata
Size: - Virtual size: 388KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 111KB - Virtual size: 110KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

24f4223e271413c25abad52fd456a9bc

Code Sign

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08Certificate

Extended Key Usages

Key Usages

02:5a:1b:f3:e3:89:23:83:82:53:71:90:d3:49:e5:6aCertificate

Extended Key Usages

Key Usages

61:1c:b2:8a:00:00:00:00:00:26Certificate

Key Usages

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:ddCertificate

Extended Key Usages

Key Usages

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15Certificate

Extended Key Usages

Key Usages

c0:0d:19:e1:9e:46:1e:e8:47:97:35:1d:cc:0e:6f:3d:f9:9d:0b:53:43:6a:7f:a5:e7:ac:29:f2:2c:9b:72:69Signer

Signature Validations

Verification

28/03/2022, 11:03 Valid: true

Chain 1

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

shell32

advapi32

comctl32

ole32

Sections

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

.rdata Size: 5KB - Virtual size: 4KB

.data Size: 1KB - Virtual size: 128KB

.ndata Size: - Virtual size: 388KB

.rsrc Size: 111KB - Virtual size: 110KB

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08
Certificate

02:5a:1b:f3:e3:89:23:83:82:53:71:90:d3:49:e5:6a
Certificate

61:1c:b2:8a:00:00:00:00:00:26
Certificate

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:dd
Certificate

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15
Certificate

c0:0d:19:e1:9e:46:1e:e8:47:97:35:1d:cc:0e:6f:3d:f9:9d:0b:53:43:6a:7f:a5:e7:ac:29:f2:2c:9b:72:69
Signer

28/03/2022, 11:03
Valid: true

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

.rdata
Size: 5KB - Virtual size: 4KB

.data
Size: 1KB - Virtual size: 128KB

.ndata
Size: - Virtual size: 388KB

.rsrc
Size: 111KB - Virtual size: 110KB