05082026_0408_03082026_Tax_Notice_84627.exe.iso
- SHA256 24bffa830cdacecd5f1bef08add506882c7e15c310776515431783c8a422ee3e
Password
infected
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
Tax_Notice_84627.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
13 signatures
300 seconds
Behavioral task
behavioral2
Sample
Tax_Notice_84627.exe
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
13 signatures
300 seconds
Behavioral task
behavioral3
Sample
nvml.dll
Resource
win10v2004-20260513-en
windows10-2004-x64
0 signatures
300 seconds
Behavioral task
behavioral4
Sample
nvml.dll
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
0 signatures
300 seconds
General
- Target 05082026_0408_03082026_Tax_Notice_84627.exe.iso
- Size 364KB
- Sample260805-eqfjfsdb66
- SHA256 24bffa830cdacecd5f1bef08add506882c7e15c310776515431783c8a422ee3e
- MD5 7827367ebd9b28f0e625ec17ca373034
- SHA1 e08f77e9386f858c60ccb7731d31d732660a4f69
- SHA512 fcd53a2c89ca00f3025427a025020326c5449b6ddfa3ab962991cb731831911e80439d90b95de6a3471ad16d64eaedea1c52b7c3b812528d25b9af5c1580e5bf
- SSDEEP 6144:dqLbMNk1Nfm0rfQBqZE+peAn5IEJvMqTBJNFm:dy71Nfhu+1mqTnNFm
- TLSH T1F9847C81F7866EFAEC7A447C89B1662AFB71B0180374C35B369C9097DF132815E3A395
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
5/10
Malware Config
Signatures
- DLL Hijacking vulnerability 1 IoCs
Signed PE file loads submitted unsigned PE file, allowing DLL hijacking/sideloading/preloading.
resource unpack002/nvml.dll - Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack002/nvml.dll
File Explorer
-
05082026_0408_03082026_Tax_Notice_84627.exe.iso.iso 364KB
-
out.iso.iso 364KB
-
NVML.DAT2KB
-
Tax_Notice_84627.exe.exe 287KB
-
nvml.dll.dll 9KB
out.iso
- SHA256 24bffa830cdacecd5f1bef08add506882c7e15c310776515431783c8a422ee3e
- MD5 7827367ebd9b28f0e625ec17ca373034
- SHA1 e08f77e9386f858c60ccb7731d31d732660a4f69
- SHA512 fcd53a2c89ca00f3025427a025020326c5449b6ddfa3ab962991cb731831911e80439d90b95de6a3471ad16d64eaedea1c52b7c3b812528d25b9af5c1580e5bf
- SSDEEP 6144:dqLbMNk1Nfm0rfQBqZE+peAn5IEJvMqTBJNFm:dy71Nfhu+1mqTnNFm
- TLSH T1F9847C81F7866EFAEC7A447C89B1662AFB71B0180374C35B369C9097DF132815E3A395
- MD5 SHA1 SHA512 SSDEEP TLSH
Password
infected
NVML.DAT
- SHA256 0f9f5c9f8d4726539eb18bc41633145d138f67de01ed50e94620f7462bfe5132
- MD5 23b4653e0a56c44a229c9a89a396438d
- SHA1 18d1bec4e4acd8f2298d70adb8ba93bca62e4b39
- SHA512 ef1d0a431c07b871f90059a90c0aa001746159354bb4d98e8c0c7200a51c4831d3f221f8c8eddbf529f09c272a628ffba0ce9437408bf8cae8033e1bb0d1eba5
- TLSH T177412B9BF30F86B4001344F1E84DC1B14A29181AF600196BA6A5ABE0C2604E67B2D7D1
- MD5 SHA1 SHA512 TLSH
Tax_Notice_84627.exe
- IMPHASH e94c291cbf7f11ed5641bc513cd6a0f8
- SHA256 93694473622f770d539263ae211dde4715264b0f23c858ba69796adca76cae35
- MD5 c9afda4f027fc9510134cffcc4d54da3
- SHA1 c5b5fb5f06d1f6cf98afa0df97f57e9bd7b454ed
- SHA512 91fc95c20e93059a470c5d6506ce368581679cb7b43216b44a5a1f2e440eee1729523935943226ad488a98cfc7ac7ce5888bae01ed359962feb3eb01e9b8e458
- SSDEEP 6144:/bMNk1Nfm0rfQBqZE+peAn5IEJvMqTBJNFmU:/71Nfhu+1mqTnNFmU
- TLSH T15A547D81FB866EFAEC79447C8AF1662AFB70B0180364C35B26989097DF133915D3A3D5
- MD5 SHA1 SHA512 SSDEEP TLSH
Password
infected
Digest
fb:f1:b6:55:9f:d0:4f:3b:8f:d4:c4:12:f6:8a:b5:72:1b:2e:45:39:02:93:72:69:74:cf:23:8f:4f:49:39:be
Digest Algorithm
sha256
PE Digests Matches
Trusted
Signing Certificate
CN=Microsoft Windows Hardware Compatibility Publisher,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
Chains
Dec 19, 2023
CN=Microsoft Windows Hardware Compatibility Publisher,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
CN=Microsoft Windows Third Party Component CA 2012,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
Digest
fb:f1:b6:55:9f:d0:4f:3b:8f:d4:c4:12:f6:8a:b5:72:1b:2e:45:39:02:93:72:69:74:cf:23:8f:4f:49:39:be
Digest Algorithm
sha256
PE Digests Matches
Trusted
Signing Certificate
CN=NVIDIA Corporation,OU=1-F,O=NVIDIA Corporation,L=Santa Clara,ST=California,C=US
Chains
Nov 21, 2023
CN=NVIDIA Corporation,OU=1-F,O=NVIDIA Corporation,L=Santa Clara,ST=California,C=US
CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US
CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US
CN=NVIDIA Corporation,OU=1-F,O=NVIDIA Corporation,L=Santa Clara,ST=California,C=US
CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US
CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US
CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US
Subject
CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US
Serial Number
08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9
Issuer
CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US
Key Usages
KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign
Ext Key Usages
ExtKeyUsageCodeSigning
Timespan
Apr 29, 2021 - Apr 28, 2036
Subject
CN=NVIDIA Corporation,OU=1-F,O=NVIDIA Corporation,L=Santa Clara,ST=California,C=US
Serial Number
0d:01:94:cd:1e:31:42:20:51:35:d1:c6:36:e4:e9:ba
Issuer
CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US
Key Usages
KeyUsageDigitalSignature
Ext Key Usages
ExtKeyUsageCodeSigning
Timespan
Oct 18, 2022 - Oct 15, 2025
Subject
CN=DigiCert Timestamp 2023,O=DigiCert\, Inc.,C=US
Serial Number
05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16
Issuer
CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US
Key Usages
KeyUsageDigitalSignature
Ext Key Usages
ExtKeyUsageTimeStamping
Timespan
Jul 14, 2023 - Oct 13, 2034
Subject
CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US
Serial Number
07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Issuer
CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US
Key Usages
KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign
Ext Key Usages
ExtKeyUsageTimeStamping
Timespan
Mar 23, 2022 - Mar 22, 2037
Subject
CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US
Serial Number
0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Issuer
CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US
Key Usages
KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign
Timespan
Aug 1, 2022 - Nov 9, 2031
Subject
CN=Microsoft Windows Hardware Compatibility Publisher,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
Serial Number
33:00:00:01:09:5e:de:a2:12:7e:92:81:cc:00:00:00:00:01:09
Issuer
CN=Microsoft Windows Third Party Component CA 2012,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
Ext Key Usages
ExtKeyUsageCodeSigning
Timespan
Sep 14, 2023 - Sep 4, 2024
Subject
CN=Microsoft Windows Third Party Component CA 2012,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
Serial Number
61:0b:aa:c1:00:00:00:00:00:09
Issuer
CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
Key Usages
KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign
Timespan
Apr 18, 2012 - Apr 18, 2027
Subject
CN=Microsoft Time-Stamp Service,OU=Microsoft America Operations+OU=nShield TSS ESN:9200-05E0-D947,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
Serial Number
33:00:00:01:cf:52:36:be:71:4b:cd:48:ca:00:01:00:00:01:cf
Issuer
CN=Microsoft Time-Stamp PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
Key Usages
KeyUsageDigitalSignature
Ext Key Usages
ExtKeyUsageTimeStamping
Timespan
May 25, 2023 - Feb 1, 2024
Subject
CN=Microsoft Time-Stamp PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
Serial Number
33:00:00:00:15:c5:e7:6b:9e:02:9b:49:99:00:00:00:00:00:15
Issuer
CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US
Key Usages
KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign
Ext Key Usages
ExtKeyUsageTimeStamping
Timespan
Sep 30, 2021 - Sep 30, 2030
Minor OS version
2
Major OS version
5
Entry point
81172
Magic Number
523
Subsystem
IMAGE_SUBSYSTEM_WINDOWS_CUI
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
PDB paths
kernel32
ReleaseMutex
WaitForSingleObject
CreateMutexA
CloseHandle
CreateFileA
GetLastError
ReadFile
WriteFile
SetFilePointer
GetProcessHeap
SetEndOfFile
WriteConsoleW
GetConsoleOutputCP
WriteConsoleA
SetStdHandle
GetModuleHandleW
Sleep
GetProcAddress
ExitProcess
HeapAlloc
HeapFree
HeapReAlloc
EnterCriticalSection
LeaveCriticalSection
DeleteFileA
GetSystemTimeAsFileTime
GetCommandLineA
RtlUnwindEx
TerminateProcess
GetCurrentProcess
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsDebuggerPresent
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
EncodePointer
DecodePointer
FlsGetValue
FlsSetValue
FlsFree
SetLastError
GetCurrentThreadId
FlsAlloc
GetStdHandle
GetModuleFileNameA
DeleteCriticalSection
LoadLibraryA
InitializeCriticalSectionAndSpinCount
HeapSetInformation
HeapCreate
GetCPInfo
GetACP
GetOEMCP
IsValidCodePage
SetHandleCount
GetFileType
GetStartupInfoA
WideCharToMultiByte
GetConsoleCP
GetConsoleMode
MultiByteToWideChar
FlushFileBuffers
FreeEnvironmentStringsA
GetEnvironmentStrings
FreeEnvironmentStringsW
GetEnvironmentStringsW
QueryPerformanceCounter
GetTickCount
GetCurrentProcessId
HeapSize
GetLocaleInfoA
LCMapStringA
LCMapStringW
GetStringTypeA
GetStringTypeW
nvml
nvmlDeviceGetCount_v2
nvmlDeviceGetHandleByIndex_v2
nvmlDeviceGetName
nvmlDeviceGetSerial
nvmlDeviceGetUUID
nvmlInit_v2
nvmlErrorString
nvmlInternalGetExportTable
nvmlShutdown
Name
.text
Size
126KB
Virtual Size
126KB
Characteristics
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
Name
.rdata
Size
126KB
Virtual Size
125KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Name
.data
Size
7KB
Virtual Size
15KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Name
.pdata
Size
5KB
Virtual Size
5KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Name
.rsrc
Size
1024B
Virtual Size
832B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
generic
count=2, id=257, productName=VS2019 v16.9.2 build 29913, version=29913,
count=35, id=132, productName=VS2008 build 21022, version=21022,
count=10, id=149, productName=VS2008 build 21022, version=21022,
count=3, id=123, productName=VS2005 build 50727, version=50727,
count=101, id=1, productName=Unmarked objects,
count=186, id=131, productName=VS2008 build 21022, version=21022,
count=1, id=148, productName=VS2008 build 21022, version=21022,
count=1, id=145, productName=VS2008 build 21022, version=21022,
nvml.dll
- IMPHASH 38635fb6aa9fc723412530df72c15ac2
- SHA256 98f78334ff5a02991efdeae29d20b2caec3fb78bd2b6b7bb8fdfbbf5c6f37e8d
- MD5 3a214e3954a8189120a33134c31d15e5
- SHA1 54fd902634656394c4e343db47de4a7d87feb756
- SHA512 5fe4ed3fe6af61b40a6e1567ada076ac3f5b40f9c03a9ac6138f8507217c5c4f230f18f764e46f6bbedb33222be363756efce1452ad064a9134ed38c4cce7cd9
- SSDEEP 192:uAusGJ4cuY/B+dCaDmCxwL39ukoa3S3sFbdDl9:u1acuCWDKLRPFpDl9
- TLSH T1A312D734F35725EAE863EE3066E6A5367876BC3856686E7D14D0DF3F3914CC4292C902
- MD5 SHA1 SHA512 SSDEEP TLSH
-
DLL Hijacking vulnerability
Signed PE file loads submitted unsigned PE file, allowing DLL hijacking/sideloading/preloading.
-
Unsigned PE
Checks for missing Authenticode signature.
Password
infected
Minor OS version
0
Major OS version
4
Entry point
4176
Magic Number
523
Subsystem
IMAGE_SUBSYSTEM_WINDOWS_GUI
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED
IMAGE_FILE_DLL
PDB paths
advapi32
AllocateAndInitializeSid
CheckTokenMembership
FreeSid
RegCloseKey
RegCreateKeyExW
RegSetValueExW
kernel32
CloseHandle
CopyFileW
CreateDirectoryW
CreateFileW
CreateThread
DisableThreadLibraryCalls
ExitProcess
FreeConsole
GetCurrentThread
GetEnvironmentVariableW
GetFileAttributesW
GetFileSize
GetModuleFileNameW
GetModuleHandleW
GetProcAddress
LoadLibraryW
QueueUserAPC
ReadFile
SetFileAttributesW
SetFilePointer
Sleep
VirtualAlloc
VirtualFree
VirtualProtect
lstrcatW
lstrcpyW
lstrlenW
shell32
ShellExecuteExW
user32
SetProcessDPIAware
wsprintfW
nvmlDeviceGetCount_v2
nvmlDeviceGetHandleByIndex_v2
nvmlDeviceGetName
nvmlDeviceGetSerial
nvmlDeviceGetUUID
nvmlErrorString
nvmlInit_v2
nvmlInternalGetExportTable
nvmlShutdown
Name
.rdata
Size
5KB
Virtual Size
4KB
Characteristics
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
Name
.bss
Size
512B
Virtual Size
48B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Name
.text
Size
512B
Virtual Size
448B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Name
.nvtext
Size
512B
Virtual Size
325B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Name
.rdata
Size
2KB
Virtual Size
1KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE