Static task
static1
Behavioral task
behavioral1
Sample
chkdsk.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
chkdsk.exe
Resource
win10v2004-20231023-en
General
-
Target
chkdsk.exe
-
Size
24KB
-
MD5
6b9f448b1dff4638ce0bfca6eb8eaf30
-
SHA1
050234634cdb25047e7975d9929aa318c3cc6ebf
-
SHA256
035a22149cfbb1415d293ad3c3664b2990191b0336d595e1564ec86ba7337da2
-
SHA512
f39d0c2e3c9d29d7e215430661b54b5c9de5211219a31ce64061fb0da5bd9da63c10b4d5750f2e4111c23ce79d67b2c53f96ed80f3c9520a6ef1c2fc4b0ccfc2
-
SSDEEP
384:nf9q3RI7DyDgpCpWODGhK2lZvEHBsnrQ0al+hdl0ITUaerNqWSFMhW:f9q3RI7DlCoOK8tWnrQ0awP3IraM
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource chkdsk.exe
Files
-
chkdsk.exe.exe windows:6 windows x64
0fda7c86e8c6c4210d550afb1805acae
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
api-ms-win-core-errorhandling-l1-1-1
GetLastError
SetUnhandledExceptionFilter
SetErrorMode
api-ms-win-core-heap-l1-2-0
HeapSetInformation
api-ms-win-core-rtlsupport-l1-2-0
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
ulib
?DisplayMsg@MESSAGE@@QEAAEKPEBDZZ
?DisplayMsg@MESSAGE@@QEAAEKW4MESSAGE_TYPE@@KPEBDZZ
?Display@MESSAGE@@QEAAEPEBDZZ
?FreeLibraryHandle@SYSTEM@@SAXPEAX@Z
?QueryNextLibraryEntryPoint@SYSTEM@@SAP6A_JXZPEAXPEBVWSTRING@@@Z
?QueryLibraryEntryPoint@SYSTEM@@SAP6A_JXZPEBVWSTRING@@0PEAPEAX@Z
?QueryDriveType@SYSTEM@@SA?AW4DRIVE_TYPE@@PEBVWSTRING@@@Z
?QueryCurrentDosDriveName@SYSTEM@@SAEPEAVWSTRING@@@Z
?Initialize@STRING_ARGUMENT@@QEAAEPEAD@Z
?DisableBreakHandling@KEYBOARD@@SAEXZ
?Resize@HMEM@@QEAAEKK@Z
?Initialize@HMEM@@QEAAEXZ
??1HMEM@@UEAA@XZ
??0HMEM@@QEAA@XZ
??1FSTRING@@UEAA@XZ
?IsLoggingEnabled@MESSAGE@@QEAAEXZ
?DisplayMsg@MESSAGE@@QEAAEK@Z
?Initialize@FSTRING@@QEAAPEAVWSTRING@@PEAGK@Z
??8WSTRING@@QEBAEAEBV0@@Z
?Log@MESSAGE@@QEAAEPEBDZZ
?Stricmp@WSTRING@@QEBAJPEBV1@@Z
??0ARRAY@@QEAA@XZ
??1ARRAY@@UEAA@XZ
?Initialize@ARRAY@@QEAAEKK@Z
?Put@ARRAY@@UEAAEPEAVOBJECT@@@Z
??0CHKDSK_MESSAGE@@QEAA@XZ
??1CHKDSK_MESSAGE@@UEAA@XZ
?Initialize@CHKDSK_MESSAGE@@QEAAEPEAVSTREAM@@00@Z
?Set@CHKDSK_MESSAGE@@UEAAEKW4MESSAGE_TYPE@@K@Z
?IsValueSet@ARGUMENT@@QEAAEXZ
??0FSTRING@@QEAA@XZ
?Initialize@WSTRING@@QEAAEPEBDK@Z
?Initialize@WSTRING@@QEAAEPEBGK@Z
?Initialize@WSTRING@@QEAAEPEBV1@KK@Z
?QueryWSTR@WSTRING@@QEBAPEAGKKPEAGKE@Z
?Strcat@WSTRING@@QEAAEPEBV1@@Z
?QueryPackedLog@MESSAGE@@QEAAEPEAVHMEM@@PEAK@Z
?MakeFileToken@MESSAGE@@SA_KPEBD@Z
??0STRING_ARGUMENT@@QEAA@XZ
?Strupr@WSTRING@@QEAAPEAV1@XZ
??1STRING_ARGUMENT@@UEAA@XZ
?Get_Standard_Output_Stream@@YAPEAVSTREAM@@XZ
??0LONG_ARGUMENT@@QEAA@XZ
?Initialize@LONG_ARGUMENT@@QEAAEPEAD@Z
??0FLAG_ARGUMENT@@QEAA@XZ
?Initialize@FLAG_ARGUMENT@@QEAAEPEAD@Z
??0DSTRING@@QEAA@XZ
??1DSTRING@@UEAA@XZ
??0PATH_ARGUMENT@@QEAA@XZ
??1PATH_ARGUMENT@@UEAA@XZ
?Initialize@PATH_ARGUMENT@@QEAAEPEADE@Z
??0PATH@@QEAA@XZ
?Initialize@PATH@@QEAAEPEBVWSTRING@@E@Z
??1PATH@@UEAA@XZ
?IsDrive@PATH@@QEBAEXZ
?AppendString@PATH@@QEAAEPEBVWSTRING@@@Z
?IsGuidVolName@PATH@@QEAAEXZ
?AnalyzePath@PATH@@QEAA?AW4PATH_ANALYZE_CODE@@PEAVWSTRING@@PEAV1@0@Z
??1OBJECT@@UEAA@XZ
?Get_Standard_Input_Stream@@YAPEAVSTREAM@@XZ
?SqmExportOnError@SQMEXPORT@@SAXKKEE_KU_GUID@@@Z
??0ARGUMENT_LEXEMIZER@@QEAA@XZ
??1ARGUMENT_LEXEMIZER@@UEAA@XZ
?Initialize@ARGUMENT_LEXEMIZER@@QEAAEPEAVARRAY@@@Z
?DoParsing@ARGUMENT_LEXEMIZER@@QEAAEPEAVARRAY@@@Z
?QueryInvalidArgument@ARGUMENT_LEXEMIZER@@QEAAPEAVWSTRING@@XZ
?PrepareToParse@ARGUMENT_LEXEMIZER@@QEAAEPEAVWSTRING@@@Z
?SetCaseSensitive@ARGUMENT_LEXEMIZER@@QEAAXE@Z
?EnableBreakHandling@KEYBOARD@@SAEXZ
ifsutil
?GetSnapshotNtDeviceName@SNAPSHOT@@QEAAPEAGXZ
?QueryID@DP_DRIVE@@QEAAEPEAU_GUID@@PEBVWSTRING@@@Z
?Initialize@DP_DRIVE@@QEAAEPEBVWSTRING@@PEAVMESSAGE@@EEG@Z
??1DP_DRIVE@@UEAA@XZ
??0DP_DRIVE@@QEAA@XZ
?IsVolumeDirty@IFS_SYSTEM@@SAEPEAVWSTRING@@PEAE1PEAJ@Z
?QueryVolumeSize@IFS_SYSTEM@@SAEPEBVWSTRING@@PEA_K@Z
?GetSnapshotErrorMessage@SNAPSHOT@@SAEJPEAVWSTRING@@@Z
?DosDriveNameToNtDriveName@IFS_SYSTEM@@SAEPEBVWSTRING@@PEAV2@@Z
?QueryFileSystemName@IFS_SYSTEM@@SAEPEBVWSTRING@@PEAV2@PEAJ1@Z
?QuerySnapshotDiffAreaVolume@SNAPSHOT@@QEAAEPEAVWSTRING@@@Z
?ReleaseVolumeSnapshot@SNAPSHOT@@SAEPEAV1@@Z
?IsFatalError@SNAPSHOT@@SAEJ@Z
?GetVolumeSnapshot@SNAPSHOT@@SAJPEAVWSTRING@@PEAPEAV1@@Z
ntdll
NtTerminateProcess
RtlUnhandledExceptionFilter
api-ms-win-eventlog-legacy-l1-1-0
ReportEventW
DeregisterEventSource
RegisterEventSourceW
msvcrt
_XcptFilter
_amsg_exit
__getmainargs
__set_app_type
exit
_exit
__setusermatherr
_initterm
__C_specific_handler
_fmode
_commode
?terminate@@YAXXZ
_cexit
memset
api-ms-win-core-synch-l1-2-0
Sleep
api-ms-win-core-libraryloader-l1-2-0
GetModuleHandleW
Sections
.text Size: 13KB - Virtual size: 13KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
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: 512B - Virtual size: 228B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.idata Size: 6KB - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 36B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ