KRNLWRD[.]rar | Triage

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General

Target

KRNLWRD.rar
Size

6.8MB
MD5

0543fb19e06332230138146e743561d1
SHA1

eda5c083624948c1388ba73c33447c97ddea7f41
SHA256

a5236b3142e898d26bf6f106029a3dafc72960eb4949b1ebb59cac601364fd61
SHA512

e7d934d87b730b484c578f3db648224cc192f292a1f9434a655719015da440b4d15458348a85c2f88d0b6808ae032a3f082f12d1b53fb0a7405425d95f7a358e
SSDEEP

196608:MplB+dQH+kpC8eMpApf9aBHjHEhp5vKtMtSuJ1414:AlByWp2fglr2DVF

Score

3^/10

Malware Config

Signatures

Unsigned PE 4 IoCs

Checks for missing Authenticode signature.

resource
unpack001/KRNLWRD/Bunifu_UI_v1.5.3.dll
unpack001/KRNLWRD/ScintillaNET.dll
unpack001/KRNLWRD/injector.dll
unpack001/KRNLWRD/krnl.dll

Files

KRNLWRD.rar
.rar
KRNLWRD/Bunifu_UI_v1.5.3.dll
.dll windows x86

dae02f32a21e03ce65412f6e56942daa

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

Imports

mscoree

_CorDllMain

Sections

.text
Size: 234KB - Virtual size: 233KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
KRNLWRD/ScintillaNET.dll
.dll windows x86

dae02f32a21e03ce65412f6e56942daa

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

Imports

mscoree

_CorDllMain

Sections

.text
Size: 1.3MB - Virtual size: 1.3MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
KRNLWRD/autoexec.lnk
.lnk
KRNLWRD/injector.dll
.dll windows x86

d588e0751eeca8d75865b11d7d0b6027

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

Imports

kernel32

OpenProcess
CreateToolhelp32Snapshot
GetExitCodeThread
CloseHandle
Module32FirstW
GetProcAddress
VirtualAllocEx
GetFileAttributesW
ReadProcessMemory
GetModuleHandleW
WideCharToMultiByte
CreateRemoteThread
Module32NextW
VirtualFreeEx
SetUnhandledExceptionFilter
WaitForSingleObject
LocalFree
WriteProcessMemory
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
UnhandledExceptionFilter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
DisableThreadLibraryCalls
InitializeSListHead
IsDebuggerPresent

advapi32

SetNamedSecurityInfoW
GetNamedSecurityInfoW
ConvertStringSidToSidW
SetEntriesInAclW

msvcp140

?_Xout_of_range@std@@YAXPBD@Z
?_Xlength_error@std@@YAXPBD@Z

vcruntime140

__CxxFrameHandler3
__std_exception_destroy
_except_handler4_common
memset
__std_type_info_destroy_list
_CxxThrowException
__std_exception_copy
memcpy

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

_callnewh
free
malloc

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

_cexit
_initialize_narrow_environment
_configure_narrow_argv
_seh_filter_dll
_initterm_e
_initterm
_initialize_onexit_table
_invalid_parameter_noinfo_noreturn
_execute_onexit_table

Exports

Exports

_inject_dll@8
_is_injected@12
_pass_console_input@16
_run_script@16

Sections

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

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 4KB - Virtual size: 4KB

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

.rsrc
Size: 512B - Virtual size: 248B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1024B - Virtual size: 688B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
KRNLWRD/krnl.dll
.dll windows x86

615138fe2fa1806ffa5686c81568e1f8

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

Imports

kernel32

AcquireSRWLockExclusive
VirtualQuery
LocalAlloc
LocalFree
GetModuleFileNameW
GetProcessAffinityMask
SetProcessAffinityMask
SetThreadAffinityMask
Sleep
ExitProcess
FreeLibrary
LoadLibraryA
GetModuleHandleA
GetProcAddress

user32

ClientToScreen
GetProcessWindowStation
GetProcessWindowStation
GetUserObjectInformationW

ws2_32

WSACleanup

crypt32

CertAddCertificateContextToStore

api-ms-win-core-winrt-string-l1-1-0

WindowsCreateStringReference

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

RoGetActivationFactory

shell32

SHGetFolderPathW

imm32

ImmGetContext

d3dcompiler_47

D3DCompile

advapi32

CryptAcquireContextA

wldap32

ord301

normaliz

IdnToAscii

bcrypt

BCryptGenRandom

wtsapi32

WTSSendMessageW

Exports

Exports

queue_script
send_console_input

Sections

.text
Size: - Virtual size: 3.7MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: - Virtual size: 1.9MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: - Virtual size: 381KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.00cfg
Size: - Virtual size: 8B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.voltbl
Size: - Virtual size: 348B

.asd10
Size: - Virtual size: 2.1MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.asd11
Size: 5.3MB - Virtual size: 5.3MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.reloc
Size: 7KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 512B - Virtual size: 223B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
KRNLWRD/krnl.exe
.exe windows x86

f34d5f2d4577ed6d9ceec516c1f5a744

Code Sign

e4:27:04:95:f6:8c:91:d6:d0:ec:7b:49:4e:a4:df:1c
Certificate

Issuer

CN=Certum Trusted Network CA,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Not Before

11/09/2018, 09:26

Not After

11/09/2023, 09:26

Subject

CN=SSL.com Root Certification Authority RSA,O=SSL Corporation,L=Houston,ST=Texas,C=US

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

57:31:0a:52:95:de:1e:ed:32:44:3f:c1:de:14:f1:7d
Certificate

Issuer

CN=SSL.com Code Signing Intermediate CA RSA R1,O=SSL Corp,L=Houston,ST=Texas,C=US

Not Before

19/07/2022, 20:24

Not After

18/07/2024, 20:24

Subject

CN=1305119 B.C. Ltd,O=1305119 B.C. Ltd,L=North Vancouver,ST=British Columbia,C=CA

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

64:33:51:d3:c7:38:9f:08
Certificate

Issuer

CN=SSL.com Root Certification Authority RSA,O=SSL Corporation,L=Houston,ST=Texas,C=US

Not Before

24/06/2016, 20:44

Not After

24/06/2031, 20:44

Subject

CN=SSL.com Code Signing Intermediate CA RSA R1,O=SSL Corp,L=Houston,ST=Texas,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

1a:d6:08:a7:d6:34:b5:cd:de:97:cb:a3:cc:f0:d0:4b
Certificate

Issuer

CN=SSL.com Timestamping Issuing RSA CA R1,O=SSL Corp,L=Houston,ST=Texas,C=US

Not Before

09/12/2022, 18:30

Not After

06/12/2032, 18:30

Subject

CN=SSL.com Timestamping Unit 2022,O=SSL Corp,L=Houston,ST=Texas,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

e4:27:04:95:f6:8c:91:d6:d0:ec:7b:49:4e:a4:df:1c
Certificate

Issuer

CN=Certum Trusted Network CA,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Not Before

11/09/2018, 09:26

Not After

11/09/2023, 09:26

Subject

CN=SSL.com Root Certification Authority RSA,O=SSL Corporation,L=Houston,ST=Texas,C=US

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

6d:52:18:70:87:e8:23:4d:85:60:00:d0:80:8f:93:56
Certificate

Issuer

CN=SSL.com Root Certification Authority RSA,O=SSL Corporation,L=Houston,ST=Texas,C=US

Not Before

13/11/2019, 18:50

Not After

12/11/2034, 18:50

Subject

CN=SSL.com Timestamping Issuing RSA CA R1,O=SSL Corp,L=Houston,ST=Texas,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

be:ed:27:5f:b6:df:6b:1f:bf:29:3c:7c:5c:32:ac:8c:58:08:f3:b4:54:c0:06:08:82:cd:e5:3d:50:20:6b:28
Signer

Actual PE Digest

be:ed:27:5f:b6:df:6b:1f:bf:29:3c:7c:5c:32:ac:8c:58:08:f3:b4:54:c0:06:08:82:cd:e5:3d:50:20:6b:28

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_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

mscoree

_CorExeMain

Sections

.text
Size: 1.0MB - Virtual size: 1.0MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 185KB - Virtual size: 184KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
KRNLWRD/krnlss.exe.config
.xml
KRNLWRD/workspace.lnk.lnk
.lnk

Sharing

General

Malware Config

Signatures

Files

dae02f32a21e03ce65412f6e56942daa

Headers

DLL Characteristics

File Characteristics

Imports

mscoree

Sections

.text Size: 234KB - Virtual size: 233KB

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

.reloc Size: 512B - Virtual size: 12B

dae02f32a21e03ce65412f6e56942daa

Headers

DLL Characteristics

File Characteristics

Imports

mscoree

Sections

.text Size: 1.3MB - Virtual size: 1.3MB

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

.reloc Size: 512B - Virtual size: 12B

d588e0751eeca8d75865b11d7d0b6027

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

advapi32

msvcp140

vcruntime140

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

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

Exports

Exports

Sections

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

.rdata Size: 4KB - Virtual size: 4KB

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

.rsrc Size: 512B - Virtual size: 248B

.reloc Size: 1024B - Virtual size: 688B

615138fe2fa1806ffa5686c81568e1f8

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

ws2_32

crypt32

api-ms-win-core-winrt-string-l1-1-0

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

shell32

imm32

d3dcompiler_47

advapi32

wldap32

normaliz

bcrypt

wtsapi32

Exports

Exports

Sections

.text Size: - Virtual size: 3.7MB

.rdata Size: - Virtual size: 1.9MB

.data Size: - Virtual size: 381KB

.00cfg Size: - Virtual size: 8B

.tls Size: - Virtual size: 4KB

.voltbl Size: - Virtual size: 348B

.asd10 Size: - Virtual size: 2.1MB

.asd11 Size: 5.3MB - Virtual size: 5.3MB

.reloc Size: 7KB - Virtual size: 6KB

.rsrc Size: 512B - Virtual size: 223B

f34d5f2d4577ed6d9ceec516c1f5a744

Code Sign

e4:27:04:95:f6:8c:91:d6:d0:ec:7b:49:4e:a4:df:1cCertificate

Key Usages

.text
Size: 234KB - Virtual size: 233KB

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

.reloc
Size: 512B - Virtual size: 12B

.text
Size: 1.3MB - Virtual size: 1.3MB

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

.reloc
Size: 512B - Virtual size: 12B

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

.rdata
Size: 4KB - Virtual size: 4KB

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

.rsrc
Size: 512B - Virtual size: 248B

.reloc
Size: 1024B - Virtual size: 688B

.text
Size: - Virtual size: 3.7MB

.rdata
Size: - Virtual size: 1.9MB

.data
Size: - Virtual size: 381KB

.00cfg
Size: - Virtual size: 8B

.tls
Size: - Virtual size: 4KB

.voltbl
Size: - Virtual size: 348B

.asd10
Size: - Virtual size: 2.1MB

.asd11
Size: 5.3MB - Virtual size: 5.3MB

.reloc
Size: 7KB - Virtual size: 6KB

.rsrc
Size: 512B - Virtual size: 223B

e4:27:04:95:f6:8c:91:d6:d0:ec:7b:49:4e:a4:df:1c
Certificate

57:31:0a:52:95:de:1e:ed:32:44:3f:c1:de:14:f1:7d
Certificate

64:33:51:d3:c7:38:9f:08
Certificate

1a:d6:08:a7:d6:34:b5:cd:de:97:cb:a3:cc:f0:d0:4b
Certificate

e4:27:04:95:f6:8c:91:d6:d0:ec:7b:49:4e:a4:df:1c
Certificate

6d:52:18:70:87:e8:23:4d:85:60:00:d0:80:8f:93:56
Certificate

be:ed:27:5f:b6:df:6b:1f:bf:29:3c:7c:5c:32:ac:8c:58:08:f3:b4:54:c0:06:08:82:cd:e5:3d:50:20:6b:28
Signer

.text
Size: 1.0MB - Virtual size: 1.0MB

.rsrc
Size: 185KB - Virtual size: 184KB

.reloc
Size: 512B - Virtual size: 12B