teamsbootstrapper[.]exe

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General

Target
teamsbootstrapper.exe
Size 1.9MB
Sample260625-vebdcsdv8s
SHA256 c9d1c68b1f9048e6d04bc4313a4036f91c255df0988c4d876f687b5c1140440d
MD5 3c13fae2f3b62e499642422c5eb0ee8f
SHA1 f9e85a653968e9cd3721a0c78b722e6b05e247a3
SHA512 0144ff46b0c8698603ef19f61075e02bf4a0c0a36ca4f508a75623100fdb436b593c68b38a079ba462f6e2fb3d6a9c1397e20d338de1a1de59c6d9a596643837
SSDEEP 49152:zDfWb/e70cI8JwL6RtM/yPr85pvbcNlA+Z35T:PfW/e70zQbDEps
TLSH
T12C956B127651D0FAC4874270E04DE3386B769C2897218DE7E3C4ADBC79BA2D11E36A7D
MD5 SHA1 SHA512 SSDEEP TLSH

Score

1^/10

Malware Config

Signatures

File Explorer

teamsbootstrapper.exe

.exe 1.9MB

teamsbootstrapper.exe

IMPHASH 6a999d1e54cd007225f1babd581b0116
SHA256 c9d1c68b1f9048e6d04bc4313a4036f91c255df0988c4d876f687b5c1140440d
MD5 3c13fae2f3b62e499642422c5eb0ee8f
SHA1 f9e85a653968e9cd3721a0c78b722e6b05e247a3
SHA512 0144ff46b0c8698603ef19f61075e02bf4a0c0a36ca4f508a75623100fdb436b593c68b38a079ba462f6e2fb3d6a9c1397e20d338de1a1de59c6d9a596643837
SSDEEP 49152:zDfWb/e70cI8JwL6RtM/yPr85pvbcNlA+Z35T:PfW/e70zQbDEps
TLSH
T12C956B127651D0FAC4874270E04DE3386B769C2897218DE7E3C4ADBC79BA2D11E36A7D
MD5 SHA1 SHA512 SSDEEP TLSH

windows:6 windows x86 arch:x86

Digest

0c:c1:44:26:ff:7d:37:8a:53:af:90:74:d3:ef:68:59:ad:0e:b8:b8:0d:0d:9d:40:46:c6:f9:2e:f2:fd:21:bb

Digest Algorithm

sha256

PE Digests Matches

Trusted

Signing Certificate

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Chains

Mar 28, 2025

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Digest

0c:c1:44:26:ff:7d:37:8a:53:af:90:74:d3:ef:68:59:ad:0e:b8:b8:0d:0d:9d:40:46:c6:f9:2e:f2:fd:21:bb

Digest Algorithm

sha256

PE Digests Matches

Trusted

Signing Certificate

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Chains

Mar 28, 2025

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:05:a6:58:10:67:4b:3d:6c:7c:f6:00:00:00:00:05:a6

Issuer

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Aug 22, 2024 - Jul 5, 2025

Subject

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

61:0c:52:4c:00:00:00:00:00:03

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

Jul 6, 2010 - Jul 6, 2025

Subject

CN=Microsoft Time-Stamp Service,OU=Microsoft Ireland Operations Limited+OU=nShield TSS ESN:321A-05E0-D947,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:01:f8:a3:a1:26:0c:0c:40:48:fe:00:01:00:00:01:f8

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

Jul 25, 2024 - Oct 22, 2025

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

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:03:fd:36:44:39:73:0d:dc:02:28:00:00:00:00:03:fd

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Aug 22, 2024 - Aug 20, 2025

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

61:0e:90:d2:00:00:00:00:00:03

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Revocation Status

Not revoked

Timespan

Jul 8, 2011 - Jul 8, 2026

Subject

CN=Microsoft Time-Stamp Service,OU=Microsoft Ireland Operations Limited+OU=nShield TSS ESN:6B05-05E0-D947,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:01:f6:83:2f:26:6a:54:5d:22:c1:00:01:00:00:01:f6

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

Jul 25, 2024 - Oct 22, 2025

Minor OS version

Major OS version

Entry point

1280016

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_GUARD_CF IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_32BIT_MACHINE

PDB paths

teamsbootstrapper.pdb

api-ms-win-core-synch-l1-2-0

WakeByAddressSingle WakeByAddressAll WaitOnAddress

bcryptprimitives

ProcessPrng

kernel32

VirtualProtect InitializeCriticalSectionEx FlsFree FlsSetValue FlsGetValue FlsAlloc GetSystemInfo GetCurrentProcessId GetStringTypeW SetStdHandle GetCPInfo GetOEMCP GetACP lstrlenW IsValidCodePage GetCommandLineA GlobalMemoryStatusEx K32GetPerformanceInfo GetModuleHandleExW GetNativeSystemInfo CompareStringW GetProcessHeap HeapFree OpenProcess GetProcessTimes GetSystemTimes GetProcessIoCounters HeapSize SetConsoleMode HeapAlloc WriteFile ReadProcessMemory VirtualQueryEx LoadLibraryExW TlsFree LocalFree TlsSetValue TlsGetValue TlsAlloc InitializeCriticalSectionAndSpinCount DeleteCriticalSection LeaveCriticalSection GetConsoleMode CreateFileW CloseHandle LCMapStringW GetProductInfo FreeLibrary EnterCriticalSection GetProcAddress EncodePointer CreateEventW WaitForSingleObject RaiseException RtlUnwind GetStartupInfoW IsDebuggerPresent InitializeSListHead GetSystemTimeAsFileTime GetCurrentThreadId IsProcessorFeaturePresent SetUnhandledExceptionFilter UnhandledExceptionFilter GetExitCodeProcess GetSystemDirectoryW GetModuleHandleA CreateThread WideCharToMultiByte WriteConsoleW MultiByteToWideChar GetConsoleOutputCP GetFileAttributesW CreateProcessW GetWindowsDirectoryW GetFullPathNameW FormatMessageW GetLastError SetDefaultDllDirectories LoadLibraryA GetConsoleScreenBufferInfo SetConsoleTextAttribute WaitForMultipleObjects CreateNamedPipeW FreeEnvironmentStringsW CompareStringOrdinal AddVectoredExceptionHandler SetThreadStackGuarantee GetCurrentThread SwitchToThread CreateWaitableTimerExW SetWaitableTimer Sleep QueryPerformanceCounter GetCurrentProcess RtlCaptureContext ReleaseMutex SetLastError GetCurrentDirectoryW GetEnvironmentStringsW GetEnvironmentVariableW ExitProcess GetCommandLineW FlushFileBuffers SetFileInformationByHandle DuplicateHandle SetFilePointerEx SetEnvironmentVariableW GetModuleFileNameW GetModuleHandleW GetFileType CancelIo ReadFile DeleteFileW GetStdHandle FindFirstFileExW CreateDirectoryW WriteFileEx SleepEx ReadFileEx TerminateProcess QueryPerformanceFrequency GetSystemTimePreciseAsFileTime GetFileInformationByHandleEx HeapReAlloc WaitForSingleObjectEx CreateMutexA GetFileInformationByHandle FindNextFileW FindClose GetOverlappedResult DecodePointer

advapi32

RegCloseKey CopySid GetLengthSid IsValidSid GetTokenInformation OpenProcessToken RegSetValueExW RegOpenKeyExW RegQueryValueExW RegCreateKeyExW RegDeleteValueW

version

GetFileVersionInfoExW GetFileVersionInfoSizeExW VerQueryValueW

ole32

CoTaskMemFree

shell32

CommandLineToArgvW SHGetKnownFolderPath

pdh

PdhCloseQuery PdhCollectQueryData PdhRemoveCounter PdhOpenQueryA PdhAddEnglishCounterW PdhEnumObjectsA PdhGetFormattedCounterValue

powrprof

CallNtPowerInformation

ntdll

NtQuerySystemInformation NtQueryInformationProcess RtlGetVersion NtReadFile NtWriteFile RtlNtStatusToDosError

oleaut32

GetErrorInfo SysFreeString SysStringLen

psapi

GetModuleFileNameExW

Name

.text

Size

1.3MB

Virtual Size

1.3MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

399KB

Virtual Size

398KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

4KB

Virtual Size

11KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.fptable

Size

512B

Virtual Size

128B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

170KB

Virtual Size

169KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

48KB

Virtual Size

48KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

teamsbootstrapper.exe

api-ms-win-core-synch-l1-2-0

bcryptprimitives

kernel32

advapi32

version

ole32

shell32

pdh

powrprof

ntdll

oleaut32

psapi

generic