Tax_Notice_36758.img
- SHA256 5cdb8b20bab0ef77f5889729c7c8664326607ecf19ae48d2e1b1398df6b40083
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
Tax_Notice_36758.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
Tax_Notice_36758.exe
Resource
win11ltsc2024-20260706-en
windows11-ltsc_2024-x64
11 signatures
150 seconds
Behavioral task
behavioral3
Sample
nvml.dll
Resource
win10v2004-20260513-en
windows10-2004-x64
0 signatures
150 seconds
Behavioral task
behavioral4
Sample
nvml.dll
Resource
win11ltsc2024-20260706-en
windows11-ltsc_2024-x64
14 signatures
150 seconds
General
- Target Tax_Notice_36758.img
- Size 680KB
- Sample260709-sdvz9scw2m
- SHA256 5cdb8b20bab0ef77f5889729c7c8664326607ecf19ae48d2e1b1398df6b40083
- MD5 a2c8d5cdd5f76409685bdb57274214b0
- SHA1 d3a0d3714ef1db0c3bc540ab5b1dcc52687700ab
- SHA512 4775aea05ff9f4457c2ee438910a4fc25184cd90d6ce92a514019d967dd69ec0d213e336066c1b9b839aed4bd4083f0e989bea00429c9532674f37a54699c575
- SSDEEP 12288:ZCwZ0kxRaDCVqkM7Vt2NP71Nfhu+1mqTnNFm:ZCS0aRaDCVqPVOP5DLTr
- TLSH T1BCE4AE40F681BDF6ECAA8A7864E11319E7B2B0044328E72B365CFE6D4F17A549D37385
- 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
-
Tax_Notice_36758.img.iso 680KB
-
out.iso.iso 680KB
-
Tax_Notice_36758.exe.exe 287KB
-
nvml.dll.dll 328KB
out.iso
- SHA256 5cdb8b20bab0ef77f5889729c7c8664326607ecf19ae48d2e1b1398df6b40083
- MD5 a2c8d5cdd5f76409685bdb57274214b0
- SHA1 d3a0d3714ef1db0c3bc540ab5b1dcc52687700ab
- SHA512 4775aea05ff9f4457c2ee438910a4fc25184cd90d6ce92a514019d967dd69ec0d213e336066c1b9b839aed4bd4083f0e989bea00429c9532674f37a54699c575
- SSDEEP 12288:ZCwZ0kxRaDCVqkM7Vt2NP71Nfhu+1mqTnNFm:ZCS0aRaDCVqPVOP5DLTr
- TLSH T1BCE4AE40F681BDF6ECAA8A7864E11319E7B2B0044328E72B365CFE6D4F17A549D37385
- MD5 SHA1 SHA512 SSDEEP TLSH
Tax_Notice_36758.exe
- IMPHASH e94c291cbf7f11ed5641bc513cd6a0f8
- SHA256 93694473622f770d539263ae211dde4715264b0f23c858ba69796adca76cae35
- MD5 c9afda4f027fc9510134cffcc4d54da3
- SHA1 c5b5fb5f06d1f6cf98afa0df97f57e9bd7b454ed
- SHA512 91fc95c20e93059a470c5d6506ce368581679cb7b43216b44a5a1f2e440eee1729523935943226ad488a98cfc7ac7ce5888bae01ed359962feb3eb01e9b8e458
- SSDEEP 6144:/bMNk1Nfm0rfQBqZE+peAn5IEJvMqTBJNFmU:/71Nfhu+1mqTnNFmU
- TLSH T15A547D81FB866EFAEC79447C8AF1662AFB70B0180364C35B26989097DF133915D3A3D5
- MD5 SHA1 SHA512 SSDEEP TLSH
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
Revocation Status
Not revoked
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
Revocation Status
Not revoked
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
Revocation Status
Not revoked
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
Revocation Status
Not revoked
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
Revocation Status
Not revoked
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
Revocation Status
Not revoked
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
Revocation Status
Not revoked
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
Revocation Status
Not revoked
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
Revocation Status
Not revoked
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 892f052923d075e566e8cbb4332dc552
- SHA256 4f26feada7d5a765a3e8d1975b76499fb603bf9b0e7968a7fd855d9e01ae6770
- MD5 cb75b13da73fdddb04a5ded7c33f07a5
- SHA1 690c810f54d5fb489df570b1e21c0f9b2e2b9e13
- SHA512 8e720b57cf415fc8635cc6083cd84ff61da10743858091ed10abc4a3415fd1dac78b54423ea96006d58abcc873db03fff368798fdf3c9599cf2426f194e55422
- SSDEEP 6144:oDD7CapuS+EKnkC22KVuaHysiZl2jnS3MLejAMOkllVtLy32ujDIm:oCwZ0kxRaDCVqkM7Vt2N3
- TLSH T142647C50F681FEB5EC8A8FB524E21349D3B6B041971DB92F6A60FE3C025EE68D073645
- 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.
Minor OS version
0
Major OS version
4
Entry point
4944
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_DLL
PDB paths
advapi32
AllocateAndInitializeSid
CheckTokenMembership
FreeSid
RegCloseKey
RegCreateKeyExW
RegSetValueExW
kernel32
CloseHandle
CopyFileW
CreateDirectoryW
CreateFileW
CreateThread
DeleteCriticalSection
DisableThreadLibraryCalls
EnterCriticalSection
ExitProcess
FreeConsole
GetCurrentThread
GetEnvironmentVariableW
GetFileAttributesW
GetFileSize
GetLastError
GetModuleFileNameW
GetProcAddress
InitializeCriticalSection
LeaveCriticalSection
LoadLibraryW
QueueUserAPC
ReadFile
SetFileAttributesW
SetFilePointer
Sleep
TlsGetValue
VirtualAlloc
VirtualFree
VirtualProtect
VirtualQuery
lstrcatW
lstrlenW
msvcrt
__iob_func
_amsg_exit
_initterm
_lock
_unlock
abort
calloc
free
fwrite
realloc
strlen
strncmp
vfprintf
shell32
ShellExecuteExW
user32
SetProcessDPIAware
wsprintfW
nvmlDeviceGetCount_v2
nvmlDeviceGetHandleByIndex_v2
nvmlDeviceGetName
nvmlDeviceGetSerial
nvmlDeviceGetUUID
nvmlErrorString
nvmlInit_v2
nvmlInternalGetExportTable
nvmlShutdown
Name
.bss
Size
8KB
Virtual Size
7KB
Characteristics
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
Name
.rdata
Size
512B
Virtual Size
96B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Name
.xdata
Size
1024B
Virtual Size
944B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Name
.rdata
Size
512B
Virtual Size
444B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Name
.text
Size
512B
Virtual Size
324B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Name
.nvrdat
Size
Virtual Size
208B
Characteristics
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Name
.pdata
Size
512B
Virtual Size
325B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Name
.rdata
Size
2KB
Virtual Size
2KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Name
.pdata
Size
512B
Virtual Size
88B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Name
.nvtext
Size
512B
Virtual Size
16B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Name
.nvtext
Size
512B
Virtual Size
88B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Name
.pdata
Size
1024B
Virtual Size
640B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Name
.nvtext
Size
157KB
Virtual Size
156KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Name
.bss
Size
7KB
Virtual Size
6KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Name
.text
Size
9KB
Virtual Size
8KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Name
.text
Size
2KB
Virtual Size
1KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Name
.nvtext
Size
1024B
Virtual Size
765B
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Name
.text
Size
10KB
Virtual Size
10KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Name
.nvdata
Size
1KB
Virtual Size
1KB
Characteristics
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ