DropboxInstaller[.]exe

Resubmissions

01-03-2023 22:38

230301-2ks9paae34 8

01-03-2023 22:31

230301-2fnteaae23 8

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General

Target

DropboxInstaller.exe
Size

654KB
MD5

c403886af85de9303dc45ed788a975a1
SHA1

bca60540c6f95debbaff0cf962ab04115abac9d3
SHA256

20d28e00ee6a6d8fb3c77139057b7c82c96d652c35a555bf6553dffae46b46f2
SHA512

1543cac91a7dc17e58034c6dc0638a8f14ef8f973fd64836b6e600e314d1dc1eb70036717fe7a5ad6a6f2542134a2bc8c8c39efea8d51a1e1c69f54d6d308b7a
SSDEEP

12288:l/iSuK1HP6mu7kpApkp+PcJml7J+jEbT3hyUriQxB+Mu33nYF4P08jxwqwoTY1V:l/i21v6mu7kDpaBIW/r123IiP9YCYv

Score

1^/10

Malware Config

Signatures

Files

DropboxInstaller.exe
.exe windows x86

959c9df12e2ee961f3fcecfec5f9b8d1

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

0f:7a:16:55:50:16:3d:5e:d7:d1:ca:a3:fc:13:da:06
Certificate

Issuer

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

Not Before

16-11-2020 00:00

Not After

09-02-2024 23:59

Subject

CN=Dropbox\, Inc,O=Dropbox\, Inc,L=San Francisco,ST=California,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

0c:4d:69:72:4b:94:fa:3c:2a:4a:3d:29:07:80:3d:5a
Certificate

Issuer

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Not Before

21-09-2022 00:00

Not After

21-11-2033 23:59

Subject

CN=DigiCert Timestamp 2022 - 2,O=DigiCert,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Certificate

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

23-03-2022 00:00

Not After

22-03-2037 23:59

Subject

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Certificate

Issuer

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

Not Before

01-08-2022 00:00

Not After

09-11-2031 23:59

Subject

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

77:10:59:ac:d5:36:ed:a8:d6:4c:95:6d:d6:95:90:08:75:78:11:01:5f:9f:d7:c8:2a:08:74:5f:df:57:01:17
Signer

Actual PE Digest

77:10:59:ac:d5:36:ed:a8:d6:4c:95:6d:d6:95:90:08:75:78:11:01:5f:9f:d7:c8:2a:08:74:5f:df:57:01:17

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

true

Verification

Signing Certificate

CN=Dropbox\, Inc,O=Dropbox\, Inc,L=San Francisco,ST=California,C=US

04-11-2022 18:04
Valid: true

Chain 1

CN=Dropbox\, Inc,O=Dropbox\, Inc,L=San Francisco,ST=California,C=US

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_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

GetProcAddress
ExitProcess
WriteFile
GetStdHandle
GetModuleFileNameA
FreeEnvironmentStringsA
GetEnvironmentStrings
FreeEnvironmentStringsW
WideCharToMultiByte
GetLastError
GetEnvironmentStringsW
SetHandleCount
GetFileType
DeleteCriticalSection
TlsGetValue
TlsAlloc
TlsSetValue
TlsFree
InterlockedIncrement
SetLastError
GetCurrentThreadId
InterlockedDecrement
HeapCreate
HeapDestroy
VirtualFree
HeapFree
QueryPerformanceCounter
GetTickCount
GetCurrentProcessId
GetSystemTimeAsFileTime
LeaveCriticalSection
EnterCriticalSection
TerminateProcess
Sleep
UnhandledExceptionFilter
IsDebuggerPresent
LoadLibraryA
InitializeCriticalSectionAndSpinCount
GetCPInfo
GetACP
GetOEMCP
IsValidCodePage
HeapAlloc
VirtualAlloc
HeapReAlloc
RtlUnwind
HeapSize
GetLocaleInfoA
LCMapStringA
MultiByteToWideChar
LCMapStringW
GetStringTypeA
GetStringTypeW
GetProcessHeap
InitializeCriticalSection
GetModuleHandleW
SetUnhandledExceptionFilter
GetStartupInfoA
GetCurrentProcess
GetCommandLineA
GetTempFileNameW
FindResourceExW
FindResourceW
LoadResource
VerSetConditionMask
SetFilePointerEx
CreateDirectoryW
SizeofResource
FormatMessageW
GetVersionExW
GetModuleFileNameW
CreateFileW
lstrlenW
GetTempPathW
RaiseException
VerifyVersionInfoW
Process32FirstW
LockResource
RemoveDirectoryW
Process32NextW
CreateToolhelp32Snapshot
CloseHandle
DeleteFileW
LocalFree
CreateProcessW
WaitForSingleObject
GetExitCodeProcess
GetStartupInfoW
MapViewOfFile
UnmapViewOfFile
VirtualQuery
CreateFileMappingW
SetFilePointer
ReadFile

shlwapi

PathQuoteSpacesW

advapi32

OpenServiceW
OpenSCManagerW
CloseServiceHandle
QueryServiceStatusEx

ole32

CoUninitialize
CoInitializeEx

user32

wvsprintfW
CharLowerBuffW
MessageBoxW

Sections

.text
Size: 47KB - Virtual size: 46KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 11KB - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 576KB - Virtual size: 575KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Resubmissions

Sharing

General

Malware Config

Signatures

Files

959c9df12e2ee961f3fcecfec5f9b8d1

Code Sign

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

Extended Key Usages

Key Usages

0f:7a:16:55:50:16:3d:5e:d7:d1:ca:a3:fc:13:da:06Certificate

Extended Key Usages

Key Usages

0c:4d:69:72:4b:94:fa:3c:2a:4a:3d:29:07:80:3d:5aCertificate

Extended Key Usages

Key Usages

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5bCertificate

Extended Key Usages

Key Usages

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5aCertificate

Key Usages

77:10:59:ac:d5:36:ed:a8:d6:4c:95:6d:d6:95:90:08:75:78:11:01:5f:9f:d7:c8:2a:08:74:5f:df:57:01:17Signer

Signature Validations

Verification

04-11-2022 18:04 Valid: true

Chain 1

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

shlwapi

advapi32

ole32

user32

Sections

.text Size: 47KB - Virtual size: 46KB

.rdata Size: 11KB - Virtual size: 10KB

.data Size: 3KB - Virtual size: 6KB

.rsrc Size: 576KB - Virtual size: 575KB

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

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

0f:7a:16:55:50:16:3d:5e:d7:d1:ca:a3:fc:13:da:06
Certificate

0c:4d:69:72:4b:94:fa:3c:2a:4a:3d:29:07:80:3d:5a
Certificate

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Certificate

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Certificate

77:10:59:ac:d5:36:ed:a8:d6:4c:95:6d:d6:95:90:08:75:78:11:01:5f:9f:d7:c8:2a:08:74:5f:df:57:01:17
Signer

04-11-2022 18:04
Valid: true

.text
Size: 47KB - Virtual size: 46KB

.rdata
Size: 11KB - Virtual size: 10KB

.data
Size: 3KB - Virtual size: 6KB

.rsrc
Size: 576KB - Virtual size: 575KB

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