13X[.]rar | Triage

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General

Target

13X.rar
Size

1.3MB
MD5

11de991e3ef990e0f041b615f7096d3d
SHA1

7c47fcdfbdc475eb7683a8c9c1715f5ba08574eb
SHA256

de56ec951cb79fdb4d6a16e8fd2a3b2286f9f6ee08d9996a035000c1c5c58f1f
SHA512

464bae05fe41744b4734c88195c96859f7f15d5d83cb0fcc69da99bdff1dde291fd3463388ccbd7a377a473b820774df23f5ae5a3d85e5280f7d31760ad5e952
SSDEEP

24576:B5P751qU9bvBWTfIuLPdLUKc1W1wkMhhKfs6BnBV5ZvcMT+mLkygW:B5P11qU9bZWTfIuJL415XHKfzBB10e+I

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
static1/unpack001/89392e01c51b707f6b60567cdb09eae17dbbd1f0.exe.vir	upx

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/538040cfabcbbea5a85b2e159cfb18271a097c0b.dll.vir

Files

13X.rar
.rar
538040cfabcbbea5a85b2e159cfb18271a097c0b.dll.vir
.dll regsvr32 windows:6 windows x64

9da83a0d47e079a6598d2e52e817040d

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

Imports

ntdll

NtWriteFile
NtReadVirtualMemory
RtlNtStatusToDosError
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
NtWaitForSingleObject
NtCreateThreadEx
NtProtectVirtualMemory
NtWriteVirtualMemory
NtAllocateVirtualMemory

kernel32

IsDebuggerPresent
DisableThreadLibraryCalls
GetCurrentThreadId
UnhandledExceptionFilter
InitializeSListHead
SetUnhandledExceptionFilter
GetModuleHandleW
GetSystemTimeAsFileTime
GetConsoleWindow
LoadLibraryA
GetProcAddress
WriteProcessMemory
CreateProcessA
CreateFileW
CreateFileMappingW
CloseHandle
MapViewOfFile
UnmapViewOfFile
GetCurrentProcess
ReleaseSRWLockExclusive
ReleaseMutex
ReleaseSRWLockShared
GetLastError
AcquireSRWLockExclusive
GetCurrentThread
SetLastError
GetCurrentDirectoryW
GetEnvironmentVariableW
GetStdHandle
GetCurrentProcessId
WaitForSingleObject
TryAcquireSRWLockExclusive
QueryPerformanceCounter
HeapAlloc
GetProcessHeap
HeapFree
HeapReAlloc
AcquireSRWLockShared
WaitForSingleObjectEx
CreateMutexA
GetModuleHandleA
GetConsoleMode
IsProcessorFeaturePresent
FormatMessageW
ExitProcess
MultiByteToWideChar
WriteConsoleW
TlsGetValue
TlsSetValue

psapi

GetModuleBaseNameW
EnumProcessModulesEx

user32

ShowWindow
SetWindowPos

vcruntime140

__C_specific_handler
_CxxThrowException
memset
memcmp
__std_type_info_destroy_list
memcpy
memmove
__CxxFrameHandler3

api-ms-win-crt-runtime-l1-1-0

_cexit
_initialize_onexit_table
_initterm
_initterm_e
_seh_filter_dll
_execute_onexit_table
_initialize_narrow_environment
_configure_narrow_argv

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

free

Exports

Exports

DllGetClassObject
DllRegisterServer
DllUnregisterServer
Run
run

Sections

.text
Size: 126KB - Virtual size: 126KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 389KB - Virtual size: 389KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 776B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
89392e01c51b707f6b60567cdb09eae17dbbd1f0.exe.vir
.exe windows:6 windows x64

Code Sign

33:00:00:02:4b:b2:23:0a:43:cd:03:63:62:00:00:00:00:02:4b
Certificate

Issuer

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

Not Before

31/01/2020, 19:26

Not After

22/01/2021, 19:26

Subject

CN=Microsoft Windows Publisher,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

92:9a:a0:30:aa:d2:e3:c7:2f:3b:44:76:15:15:45:f1:4c:34:a2:8b:e3:51:64:11:3c:07:8b:4c:fa:13:75:06
Signer

Actual PE Digest

92:9a:a0:30:aa:d2:e3:c7:2f:3b:44:76:15:15:45:f1:4c:34:a2:8b:e3:51:64:11:3c:07:8b:4c:fa:13:75:06

Digest Algorithm

sha256

PE Digest Matches

false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Sections

UPX0
Size: - Virtual size: 2.9MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 946KB - Virtual size: 948KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX2
Size: 512B - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

Files

9da83a0d47e079a6598d2e52e817040d

Headers

DLL Characteristics

File Characteristics

Imports

ntdll

kernel32

psapi

user32

vcruntime140

api-ms-win-crt-runtime-l1-1-0

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

Exports

Exports

Sections

.text Size: 126KB - Virtual size: 126KB

.rdata Size: 389KB - Virtual size: 389KB

.data Size: 512B - Virtual size: 776B

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

.reloc Size: 1KB - Virtual size: 1KB

Code Sign

33:00:00:02:4b:b2:23:0a:43:cd:03:63:62:00:00:00:00:02:4bCertificate

Extended Key Usages

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

Key Usages

92:9a:a0:30:aa:d2:e3:c7:2f:3b:44:76:15:15:45:f1:4c:34:a2:8b:e3:51:64:11:3c:07:8b:4c:fa:13:75:06Signer

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 2.9MB

UPX1 Size: 946KB - Virtual size: 948KB

UPX2 Size: 512B - Virtual size: 4KB

.text
Size: 126KB - Virtual size: 126KB

.rdata
Size: 389KB - Virtual size: 389KB

.data
Size: 512B - Virtual size: 776B

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

.reloc
Size: 1KB - Virtual size: 1KB

33:00:00:02:4b:b2:23:0a:43:cd:03:63:62:00:00:00:00:02:4b
Certificate

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

92:9a:a0:30:aa:d2:e3:c7:2f:3b:44:76:15:15:45:f1:4c:34:a2:8b:e3:51:64:11:3c:07:8b:4c:fa:13:75:06
Signer

UPX0
Size: - Virtual size: 2.9MB

UPX1
Size: 946KB - Virtual size: 948KB

UPX2
Size: 512B - Virtual size: 4KB