FsIso[.]exe | Triage

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General

Target

FsIso.exe
Size

102KB
MD5

fd17241af76e5b9c391f89e5f2ed5cc7
SHA1

9a0e9a8de2cf5257941b86b5526aae1bc779d764
SHA256

22fea2c1ea9d0a26748b14128bfb342706be7babdf60721fa895b6a9b82a96d3
SHA512

45bebd0cb28545aa7800199bb2826ed9ff070b9bf047465bec48a127bfd17a8da23c1df0d555e0e3730297eb0cdbbbe2d51e2e4e1c1b5c68487538af572b5135
SSDEEP

1536:pOZ5r1WsI/aZznepT0xgKZDdibCyKx7NZ02m3u9ICYxbv+2qP5iYzP:pOjYX/aVnW0xHtsBqJZ03e9IFbFqxr

Score

1^/10

Malware Config

Signatures

Files

FsIso.exe
.exe windows x64

54fda49e38fc53ed5fd39a6ae34568e0

Code Sign

33:00:00:04:0a:87:d0:ea:67:86:e3:6b:07:00:00:00:00:04:0a
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

05/01/2023, 19:22

Not After

15/12/2023, 19:22

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

33:00:00:04:0a:87:d0:ea:67:86:e3:6b:07:00:00:00:00:04:0a
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

05/01/2023, 19:22

Not After

15/12/2023, 19:22

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

61:07:76:56:00:00:00:00:00:08
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2011, 18:41

Not After

19/10/2026, 18:51

Subject

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

28:cc:3a:25:bf:ba:44:ac:44:9a:9b:58:6b:43:39:aa
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

23/06/2010, 21:57

Not After

23/06/2035, 22:04

Subject

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

ed:72:96:1b:e1:ae:36:64:12:61:8d:b0:71:ae:59:c1:54:1d:92:f3:4c:ff:67:ae:18:96:3d:a3:a9:d4:f1:d1
Signer

Actual PE Digest

ed:72:96:1b:e1:ae:36:64:12:61:8d:b0:71:ae:59:c1:54:1d:92:f3:4c:ff:67:ae:18:96:3d:a3:a9:d4:f1:d1

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
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

msvcrt

memcpy
_fmode
_initterm
_commode
__setusermatherr
?terminate@@YAXXZ
_exit
__CxxFrameHandler3
calloc
free
malloc
_vsnprintf_s
_callnewh
__C_specific_handler
exit
_cexit
__set_app_type
__wgetmainargs
_amsg_exit
_XcptFilter
ceil
memcmp
memset

api-ms-win-core-heap-l1-1-0

HeapFree
GetProcessHeap
HeapAlloc

api-ms-win-core-synch-l1-1-0

SetEvent
CreateEventW
WaitForSingleObject
ReleaseSRWLockExclusive
AcquireSRWLockExclusive

api-ms-win-core-handle-l1-1-0

CloseHandle

api-ms-win-core-errorhandling-l1-1-0

UnhandledExceptionFilter
SetUnhandledExceptionFilter
RaiseException
GetLastError

api-ms-win-core-memory-l1-1-0

UnmapViewOfFile
MapViewOfFile

api-ms-win-eventing-provider-l1-1-0

EventUnregister
EventWriteTransfer
EventSetInformation
EventRegister

rpcrt4

RpcServerRegisterIf
RpcServerUnregisterIf
RpcMgmtStopServerListening
RpcServerListen
RpcServerUseProtseqEpW
NdrServerCallAll
NdrServerCall2

api-ms-win-core-synch-l1-2-0

Sleep

api-ms-win-core-libraryloader-l1-2-0

GetModuleHandleW

api-ms-win-core-profile-l1-1-0

QueryPerformanceCounter

api-ms-win-core-processthreads-l1-1-0

TerminateProcess
GetCurrentProcessId
GetCurrentThreadId
GetCurrentProcess

api-ms-win-core-sysinfo-l1-1-0

GetSystemTimeAsFileTime
GetTickCount

api-ms-win-core-rtlsupport-l1-1-0

RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext

iumsdk

OpenSecureSection
CreateSecureSection

Exports

Exports

__ImagePolicyMetadata

Sections

.text
Size: 56KB - Virtual size: 56KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 27KB - Virtual size: 26KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tPolicy
Size: 512B - Virtual size: 160B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 464B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

54fda49e38fc53ed5fd39a6ae34568e0

Code Sign

33:00:00:04:0a:87:d0:ea:67:86:e3:6b:07:00:00:00:00:04:0aCertificate

Extended Key Usages

33:00:00:04:0a:87:d0:ea:67:86:e3:6b:07:00:00:00:00:04:0aCertificate

Extended Key Usages

61:07:76:56:00:00:00:00:00:08Certificate

Key Usages

28:cc:3a:25:bf:ba:44:ac:44:9a:9b:58:6b:43:39:aaCertificate

Key Usages

ed:72:96:1b:e1:ae:36:64:12:61:8d:b0:71:ae:59:c1:54:1d:92:f3:4c:ff:67:ae:18:96:3d:a3:a9:d4:f1:d1Signer

Headers

DLL Characteristics

File Characteristics

Imports

msvcrt

api-ms-win-core-heap-l1-1-0

api-ms-win-core-synch-l1-1-0

api-ms-win-core-handle-l1-1-0

api-ms-win-core-errorhandling-l1-1-0

api-ms-win-core-memory-l1-1-0

api-ms-win-eventing-provider-l1-1-0

rpcrt4

api-ms-win-core-synch-l1-2-0

api-ms-win-core-libraryloader-l1-2-0

api-ms-win-core-profile-l1-1-0

api-ms-win-core-processthreads-l1-1-0

api-ms-win-core-sysinfo-l1-1-0

api-ms-win-core-rtlsupport-l1-1-0

iumsdk

Exports

Exports

Sections

.text Size: 56KB - Virtual size: 56KB

.rdata Size: 27KB - Virtual size: 26KB

.data Size: 512B - Virtual size: 1KB

.pdata Size: 2KB - Virtual size: 2KB

.tPolicy Size: 512B - Virtual size: 160B

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

.reloc Size: 512B - Virtual size: 464B

33:00:00:04:0a:87:d0:ea:67:86:e3:6b:07:00:00:00:00:04:0a
Certificate

33:00:00:04:0a:87:d0:ea:67:86:e3:6b:07:00:00:00:00:04:0a
Certificate

61:07:76:56:00:00:00:00:00:08
Certificate

28:cc:3a:25:bf:ba:44:ac:44:9a:9b:58:6b:43:39:aa
Certificate

ed:72:96:1b:e1:ae:36:64:12:61:8d:b0:71:ae:59:c1:54:1d:92:f3:4c:ff:67:ae:18:96:3d:a3:a9:d4:f1:d1
Signer

.text
Size: 56KB - Virtual size: 56KB

.rdata
Size: 27KB - Virtual size: 26KB

.data
Size: 512B - Virtual size: 1KB

.pdata
Size: 2KB - Virtual size: 2KB

.tPolicy
Size: 512B - Virtual size: 160B

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

.reloc
Size: 512B - Virtual size: 464B