bios[.]exe | Triage

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General

Target

bios.exe
Size

9.7MB
MD5

5a97f0313a9577314903d259505e5ca1
SHA1

8e0823f55943f46708b09aa51ec0c0791712ba19
SHA256

d6222306f81fd46021f02e1d9c70be702f52f3cda10fe595be6461fa4720c1e0
SHA512

f3dfa71194e68338dfd31208058f1d8e84fb651a56540e73ef94e21fc232725fc5116bd765a3d4721133dd0957c7d9e39f1e32082fbdb700237b88dc7f841e70
SSDEEP

196608:ZxRyW8lfWI0uivgxWw/xYPDo4n6/T+Wr1iKlN5vgHtnEY+FJjFk:ZKWGfWTuCL64AT+q1iKlHvgHcFJj+

Score

N/A

Malware Config

Signatures

Files

bios.exe
.exe windows x86

b8a5e8bcf9ff8926215a60ba1406e98b

Code Sign

4e:40:e4:37:54:ed:e6:8c:00:00:00:00:51:d3:94:7f
Certificate

Issuer

CN=Entrust Root Certification Authority - G2,OU=See www.entrust.net/legal-terms+OU=(c) 2009 Entrust\, Inc. - for authorized use only,O=Entrust\, Inc.,C=US

Not Before

07/05/2021, 15:43

Not After

07/11/2030, 16:13

Subject

CN=Entrust Code Signing Root Certification Authority - CSBR1,O=Entrust\, Inc.,C=US

Extended Key Usages

ExtKeyUsageCodeSigning
ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0f:b8:54:71:42:0d:e0:c7:f9:e6:bb:da:ce:4c:8b:21
Certificate

Issuer

CN=Entrust Code Signing CA - OVCS2,O=Entrust\, Inc.,C=US

Not Before

21/02/2022, 18:03

Not After

27/02/2023, 18:03

Subject

CN=Dell Inc,O=Dell Inc,L=Round Rock,ST=Texas,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

71:ef:55:74:af:35:54:c3:5a:2c:69:f6:6f:4b:6b:cd
Certificate

Issuer

CN=Entrust Code Signing Root Certification Authority - CSBR1,O=Entrust\, Inc.,C=US

Not Before

07/05/2021, 19:20

Not After

29/12/2040, 23:59

Subject

CN=Entrust Code Signing CA - OVCS2,O=Entrust\, Inc.,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

7f:f1:a8:f9:f4:3a:e8:87:6e:2d:c6:ff:5e:43:3d:b2:ee:30:a6:43
Certificate

Issuer

CN=Entrust Code Signing Root Certification Authority - CSBR1,O=Entrust\, Inc.,C=US

Not Before

07/05/2021, 13:26

Not After

30/12/2040, 13:26

Subject

CN=Entrust Code Signing Root Certification Authority - CSBR1,O=Entrust\, Inc.,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

25:bc:2b:f3:29:ca:10:7f:1e:a9:ba:88:85:d4:9d:3b
Certificate

Issuer

CN=Entrust Code Signing Root Certification Authority - CSBR1,O=Entrust\, Inc.,C=US

Not Before

07/05/2021, 19:22

Not After

29/12/2040, 23:59

Subject

CN=Entrust Time Stamping CA - TS2,O=Entrust\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

74:d9:f2:db:51:3c:22:67:fd:47:9c:36:07:3f:7b:1d
Certificate

Issuer

CN=Entrust Time Stamping CA - TS2,O=Entrust\, Inc.,C=US

Not Before

14/05/2021, 00:00

Not After

14/08/2032, 00:00

Subject

CN=Entrust Timestamp Authority - TSA2,O=Entrust\, Inc.,L=Ottawa,ST=Ontario,C=CA

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

19:e8:c8:39:15:15:a5:96:7d:4c:c0:0a:ae:ec:47:49:02:0c:70:43:74:3a:48:f6:d7:5e:cc:16:a0:ed:23:fe
Signer

Actual PE Digest

19:e8:c8:39:15:15:a5:96:7d:4c:c0:0a:ae:ec:47:49:02:0c:70:43:74:3a:48:f6:d7:5e:cc:16:a0:ed:23:fe

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

true

Verification

Signing Certificate

CN=Dell Inc,O=Dell Inc,L=Round Rock,ST=Texas,C=US

29/09/2022, 13:46
Valid: true

Chain 1

CN=Dell Inc,O=Dell Inc,L=Round Rock,ST=Texas,C=US

CN=Entrust Code Signing CA - OVCS2,O=Entrust\, Inc.,C=US

CN=Entrust Code Signing Root Certification Authority - CSBR1,O=Entrust\, Inc.,C=US

CN=Entrust Root Certification Authority - G2,OU=See www.entrust.net/legal-terms+OU=(c) 2009 Entrust\, Inc. - for authorized use only,O=Entrust\, 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

GetModuleFileNameA
SizeofResource
HeapFree
SetDefaultDllDirectories
AddDllDirectory
GetCurrentProcess
WriteFile
InitializeCriticalSectionEx
CreateMutexA
GetModuleHandleA
HeapSize
GetLastError
CreateFileA
GetSystemDirectoryA
SetDllDirectoryA
GetVersionExA
LockResource
HeapReAlloc
CloseHandle
RaiseException
FindResourceExW
LoadResource
FindResourceW
HeapAlloc
GetLocalTime
DecodePointer
HeapDestroy
GetSystemWow64DirectoryA
GetProcAddress
DeleteCriticalSection
GetProcessHeap
WideCharToMultiByte
IsWow64Process
MultiByteToWideChar
GetEnvironmentVariableA
DeleteFileA
DeviceIoControl
ReleaseMutex
WaitForSingleObject
Sleep
CreateProcessA
GetFileAttributesA
GetFullPathNameA
FreeLibrary
LoadLibraryA
SetEvent
CreateEventA
WaitForMultipleObjects
CreateThread
CreateDirectoryA
FindFirstFileA
RemoveDirectoryA
SetEndOfFile
GetSystemInfo
VirtualProtect
VirtualQuery
GetModuleHandleW
LoadLibraryExA
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionAndSpinCount
ResetEvent
WaitForSingleObjectEx
CreateEventW
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
OutputDebugStringW
LocalFree
RtlUnwind
SetLastError
EncodePointer
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
LoadLibraryExW
ReadFile
ExitProcess
GetModuleHandleExW
GetModuleFileNameW
GetStdHandle
LCMapStringW
GetFileType
GetConsoleCP
GetConsoleMode
GetFileSizeEx
SetFilePointerEx
ReadConsoleW
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetStdHandle
GetStringTypeW
FlushFileBuffers
CreateFileW
WriteConsoleW

Sections

.text
Size: 247KB - Virtual size: 246KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 65KB - Virtual size: 65KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3.3MB - Virtual size: 3.3MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 11KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

b8a5e8bcf9ff8926215a60ba1406e98b

Code Sign

4e:40:e4:37:54:ed:e6:8c:00:00:00:00:51:d3:94:7fCertificate

Extended Key Usages

Key Usages

0f:b8:54:71:42:0d:e0:c7:f9:e6:bb:da:ce:4c:8b:21Certificate

Extended Key Usages

Key Usages

71:ef:55:74:af:35:54:c3:5a:2c:69:f6:6f:4b:6b:cdCertificate

Extended Key Usages

Key Usages

7f:f1:a8:f9:f4:3a:e8:87:6e:2d:c6:ff:5e:43:3d:b2:ee:30:a6:43Certificate

Key Usages

25:bc:2b:f3:29:ca:10:7f:1e:a9:ba:88:85:d4:9d:3bCertificate

Extended Key Usages

Key Usages

74:d9:f2:db:51:3c:22:67:fd:47:9c:36:07:3f:7b:1dCertificate

Extended Key Usages

Key Usages

19:e8:c8:39:15:15:a5:96:7d:4c:c0:0a:ae:ec:47:49:02:0c:70:43:74:3a:48:f6:d7:5e:cc:16:a0:ed:23:feSigner

Signature Validations

Verification

29/09/2022, 13:46 Valid: true

Chain 1

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

Sections

.text Size: 247KB - Virtual size: 246KB

.rdata Size: 65KB - Virtual size: 65KB

.data Size: 3.3MB - Virtual size: 3.3MB

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

.reloc Size: 11KB - Virtual size: 11KB

4e:40:e4:37:54:ed:e6:8c:00:00:00:00:51:d3:94:7f
Certificate

0f:b8:54:71:42:0d:e0:c7:f9:e6:bb:da:ce:4c:8b:21
Certificate

71:ef:55:74:af:35:54:c3:5a:2c:69:f6:6f:4b:6b:cd
Certificate

7f:f1:a8:f9:f4:3a:e8:87:6e:2d:c6:ff:5e:43:3d:b2:ee:30:a6:43
Certificate

25:bc:2b:f3:29:ca:10:7f:1e:a9:ba:88:85:d4:9d:3b
Certificate

74:d9:f2:db:51:3c:22:67:fd:47:9c:36:07:3f:7b:1d
Certificate

19:e8:c8:39:15:15:a5:96:7d:4c:c0:0a:ae:ec:47:49:02:0c:70:43:74:3a:48:f6:d7:5e:cc:16:a0:ed:23:fe
Signer

29/09/2022, 13:46
Valid: true

.text
Size: 247KB - Virtual size: 246KB

.rdata
Size: 65KB - Virtual size: 65KB

.data
Size: 3.3MB - Virtual size: 3.3MB

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

.reloc
Size: 11KB - Virtual size: 11KB