AcroPDF[.]dll | Triage

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General

Target

AcroPDF.dll
Size

498KB
MD5

98226999cd41b8109590e841b4be7632
SHA1

883db9bb3e800cbe7ebc9bef238ecda3ba05f37a
SHA256

95c2d4e03f2e610f0d1aa6e77456887121a5841d7169cf2eff21d3b8ed5dc8cc
SHA512

b77da8abbd9363ddebef10824468ec04bae788d5b4bf6074845c120cc625ddbd6c5c4838f1e81b1cb235f1ffe6a7e52e4f386564b144552f4e90ff0cb9ec99e1
SSDEEP

3072:EjH7NtoEv+jgCi+SB/QpVbcseAEZ7+XUqxhL265oGdhmsFZZG3x3+iVGvh6JgPvK:Ez7Ntr+jgjj1mcs05ghxN26ANVwa

Score

1^/10

Malware Config

Signatures

Files

AcroPDF.dll
.dll regsvr32 windows:6 windows x86 arch:x86

a669f53636b6f0d1905c86c2d0cd6453

Code Sign

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9
Certificate

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

29/04/2021, 00:00

Not After

28/04/2036, 23:59

Subject

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

04:52:96:f8:fc:d8:29:a7:5d:c9:42:94:f5:a4:15:a4
Certificate

Issuer

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Not Before

29/04/2022, 00:00

Not After

01/05/2024, 23:59

Subject

SERIALNUMBER=2748129,CN=Adobe Inc.,OU=Acrobat DC,O=Adobe Inc.,L=San Jose,ST=ca,C=US,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.2=#130844656c6177617265,1.3.6.1.4.1.311.60.2.1.3=#13025553

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

0c:4d:69:72:4b:94:fa:3c:2a:4a:3d:29:07:80:3d:5a
Certificate

Issuer

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Not Before

21/09/2022, 00:00

Not After

21/11/2033, 23:59

Subject

CN=DigiCert Timestamp 2022 - 2,O=DigiCert,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Certificate

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

23/03/2022, 00:00

Not After

22/03/2037, 23:59

Subject

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Certificate

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

01/08/2022, 00:00

Not After

09/11/2031, 23:59

Subject

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

d6:23:14:0d:b1:4b:bb:2f:47:3a:c0:af:ca:60:50:2c:de:d4:e7:ef:36:2b:11:a2:dc:85:49:de:29:7d:0e:b8
Signer

Actual PE Digest

d6:23:14:0d:b1:4b:bb:2f:47:3a:c0:af:ca:60:50:2c:de:d4:e7:ef:36:2b:11:a2:dc:85:49:de:29:7d:0e:b8

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

PDB Paths

D:\T\BuildResults\bin\Release\AcroPDF.pdb

Imports

kernel32

LoadLibraryExA
LoadResource
SizeofResource
lstrcmpiA
FindResourceA
MultiByteToWideChar
WideCharToMultiByte
IsDBCSLeadByte
GetThreadLocale
SetThreadLocale
SetLastError
GetCurrentThreadId
LockResource
FindResourceW
MulDiv
HeapAlloc
HeapReAlloc
HeapFree
HeapSize
GetProcessHeap
GetUserDefaultLangID
GetModuleHandleW
GetConsoleMode
GetConsoleOutputCP
FlushFileBuffers
SetStdHandle
SetFilePointerEx
GetStringTypeW
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetCommandLineW
GetCommandLineA
GetCPInfo
GetOEMCP
GetACP
IsValidCodePage
FindNextFileW
FindFirstFileExW
FindClose
GetModuleHandleA
GetModuleFileNameA
FreeLibrary
DeleteCriticalSection
InitializeCriticalSectionEx
LeaveCriticalSection
EnterCriticalSection
RaiseException
DecodePointer
EncodePointer
GetModuleHandleExW
GetProcAddress
lstrlenW
GetTickCount
Sleep
OpenMutexW
SetNamedPipeHandleState
GetLastError
CloseHandle
WriteFile
ReadFile
GetVolumeInformationW
CreateFileW
LCMapStringW
GetFileType
GetStdHandle
GetModuleFileNameW
ExitProcess
VirtualQuery
VirtualProtect
GetSystemInfo
LoadLibraryExW
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
InterlockedFlushSList
RtlUnwind
VirtualFree
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
InitializeCriticalSectionAndSpinCount
CreateEventW
IsDebuggerPresent
GetStartupInfoW
QueryPerformanceCounter
GetCurrentProcessId
GetSystemTimeAsFileTime
InitializeSListHead
OutputDebugStringW
InterlockedPopEntrySList
InterlockedPushEntrySList
FlushInstructionCache
VirtualAlloc
WriteConsoleW

user32

ReleaseDC
CharNextA
CharNextW
DefWindowProcA
CallWindowProcA
UnregisterClassA
RegisterClassExA
LoadCursorA
SetWindowLongA
GetWindowLongA
MessageBoxA
GetClientRect
EndPaint
BeginPaint
GetDC
GetFocus
DestroyWindow
IsChild
CreateWindowExA
GetClassInfoExA

gdi32

SetWindowOrgEx
SetViewportOrgEx
LPtoDP
TextOutA
SetTextAlign
SetMapMode
SaveDC
RestoreDC
GetDeviceCaps
DeleteDC
CreateDCA

advapi32

RegOpenKeyExW
RegSetValueExA
RegQueryInfoKeyW
RegQueryInfoKeyA
RegEnumKeyExA
RegDeleteValueA
RegDeleteKeyA
RegCreateKeyExA
RegQueryValueExA
RegOpenKeyExA
RegCloseKey

ole32

CoCreateInstance
StringFromGUID2
CoTaskMemAlloc
CoTaskMemRealloc
CoTaskMemFree
CoFreeUnusedLibrariesEx

oleaut32

RegisterTypeLi
SysAllocString
SysFreeString
VariantClear
VariantInit
SysAllocStringLen
SysStringLen
UnRegisterTypeLi
LoadTypeLi
VarUI4FromStr

shlwapi

PathAddExtensionA
PathAppendA
PathRemoveFileSpecA

Exports

Exports

DllCanUnloadNow
DllGetClassObject
DllInstall
DllRegisterServer
DllUnregisterServer

Sections

.text
Size: 116KB - Virtual size: 115KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 42KB - Virtual size: 41KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 6KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 315KB - Virtual size: 314KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 8KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

a669f53636b6f0d1905c86c2d0cd6453

Code Sign

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9Certificate

Extended Key Usages

Key Usages

04:52:96:f8:fc:d8:29:a7:5d:c9:42:94:f5:a4:15:a4Certificate

Extended Key Usages

Key Usages

0c:4d:69:72:4b:94:fa:3c:2a:4a:3d:29:07:80:3d:5aCertificate

Extended Key Usages

Key Usages

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5bCertificate

Extended Key Usages

Key Usages

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5aCertificate

Key Usages

d6:23:14:0d:b1:4b:bb:2f:47:3a:c0:af:ca:60:50:2c:de:d4:e7:ef:36:2b:11:a2:dc:85:49:de:29:7d:0e:b8Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

user32

gdi32

advapi32

ole32

oleaut32

shlwapi

Exports

Exports

Sections

.text Size: 116KB - Virtual size: 115KB

.rdata Size: 42KB - Virtual size: 41KB

.data Size: 6KB - Virtual size: 8KB

.rsrc Size: 315KB - Virtual size: 314KB

.reloc Size: 8KB - Virtual size: 8KB

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9
Certificate

04:52:96:f8:fc:d8:29:a7:5d:c9:42:94:f5:a4:15:a4
Certificate

0c:4d:69:72:4b:94:fa:3c:2a:4a:3d:29:07:80:3d:5a
Certificate

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Certificate

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Certificate

d6:23:14:0d:b1:4b:bb:2f:47:3a:c0:af:ca:60:50:2c:de:d4:e7:ef:36:2b:11:a2:dc:85:49:de:29:7d:0e:b8
Signer

.text
Size: 116KB - Virtual size: 115KB

.rdata
Size: 42KB - Virtual size: 41KB

.data
Size: 6KB - Virtual size: 8KB

.rsrc
Size: 315KB - Virtual size: 314KB

.reloc
Size: 8KB - Virtual size: 8KB