2026-07-27_4a8800b32840a6f91bde4d6303f37efc_akira_quasar-rat

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General

Target
2026-07-27_4a8800b32840a6f91bde4d6303f37efc_akira_quasar-rat
Size 2.2MB
Sample260727-kd8mcsab23
SHA256 8ebe170b3965ac4cd7a69667b7c312bd19863f91ec2706faea36762c978dbf31
MD5 4a8800b32840a6f91bde4d6303f37efc
SHA1 4ee524d331c1ece46f8329a486704c9a339278d4
SHA512 429ff02e9e14b06990de47bd8b4e8c00c3c4103caecf8abe031dbcc8a21e28605503a9970a57e231ac81da00e1cc3193c32d0db2712469d882437b66043f8727
SSDEEP 24576:nt06jlL7Lb5LeimhzPAkT5UVZnBUKttEKaBAGY/jSqycwsCSciv:nt04L7LNLeimZPAlV1BBttIiSMv
TLSH
T12DB54A4B7EB1A1A8E0F985B4C253F422EE27784B161459BA73DC57319F61A033AC877C
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

Malware Config

Signatures

Detects executables embedding registry key / value combination indicative of disabling Windows Defen 1 IoCs

resource	yara_rule
sample	INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender

Untrusted Codesign Signers 1 IoCs

Codesigned file was signed by an untrusted entity.

resource
2026-07-27_4a8800b32840a6f91bde4d6303f37efc_akira_quasar-rat

File Explorer

2026-07-27_4a8800b32840a6f91bde4d6303f37efc_akira_quasar-rat

.exe 2.2MB

2026-07-27_4a8800b32840a6f91bde4d6303f37efc_akira_quasar-rat

IMPHASH 7d11fa2a8bf7cee4cae77436ac418b8e
SHA256 8ebe170b3965ac4cd7a69667b7c312bd19863f91ec2706faea36762c978dbf31
MD5 4a8800b32840a6f91bde4d6303f37efc
SHA1 4ee524d331c1ece46f8329a486704c9a339278d4
SHA512 429ff02e9e14b06990de47bd8b4e8c00c3c4103caecf8abe031dbcc8a21e28605503a9970a57e231ac81da00e1cc3193c32d0db2712469d882437b66043f8727
SSDEEP 24576:nt06jlL7Lb5LeimhzPAkT5UVZnBUKttEKaBAGY/jSqycwsCSciv:nt04L7LNLeimZPAlV1BBttIiSMv
TLSH
T12DB54A4B7EB1A1A8E0F985B4C253F422EE27784B161459BA73DC57319F61A033AC877C
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x64 arch:x64

Detects executables embedding registry key / value combination indicative of disabling Windows Defen
Untrusted Codesign Signers

Codesigned file was signed by an untrusted entity.

PE Signature issue

Digest

3e:dd:f9:23:d1:70:f3:20:4e:a6:56:0b:08:6b:66:33:a7:85:03:96:cc:8a:d7:87:67:9d:83:d2:44:8b:1a:e5

Digest Algorithm

sha256

PE Digests Matches

Trusted

Not trusted

Signing Certificate

CN=Kevin Campbell,OU=IT,O=Pulse Networks,1.2.840.113549.1.9.1=#0c186b6576696e2e63616d7062656c6c407961686f6f2e636f6d

Chains

Jul 24, 2026

CN=Kevin Campbell,OU=IT,O=Pulse Networks,1.2.840.113549.1.9.1=#0c186b6576696e2e63616d7062656c6c407961686f6f2e636f6d

Minor OS version

Major OS version

Entry point

5152

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_LOCAL_SYMS_STRIPPED IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_DEBUG_STRIPPED

PDB paths

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

WaitOnAddress WakeByAddressAll WakeByAddressSingle

kernel32

AddVectoredExceptionHandler CloseHandle CreateFileMappingA CreateFileW CreateThread CreateToolhelp32Snapshot CreateWaitableTimerExW DeleteCriticalSection DeviceIoControl DuplicateHandle EnterCriticalSection ExitProcess FindClose FindFirstFileExW FindNextFileW FormatMessageW FreeLibrary GetCommandLineW GetConsoleMode GetConsoleOutputCP GetCurrentDirectoryW GetCurrentProcess GetCurrentThread GetCurrentThreadId GetEnvironmentVariableW GetFileInformationByHandle GetFileInformationByHandleEx GetFullPathNameW GetLastError GetModuleFileNameW GetModuleHandleA GetModuleHandleW GetProcAddress GetProcessHeap GetStdHandle GetSystemInfo GetSystemTimePreciseAsFileTime GetTempPathW HeapAlloc HeapFree HeapReAlloc InitOnceBeginInitialize InitOnceComplete InitializeCriticalSection LeaveCriticalSection LoadLibraryA LoadLibraryW MapViewOfFile Module32FirstW Module32NextW MultiByteToWideChar QueryPerformanceCounter QueryPerformanceFrequency RaiseException RtlCaptureContext RtlLookupFunctionEntry RtlUnwindEx RtlVirtualUnwind SetFileInformationByHandle SetFileTime SetLastError SetThreadStackGuarantee SetUnhandledExceptionFilter SetWaitableTimer Sleep SwitchToThread TlsAlloc TlsFree TlsGetValue TlsSetValue UnmapViewOfFile VirtualProtect VirtualQuery WaitForSingleObject WriteConsoleW __C_specific_handler

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

__p__environ

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

_set_new_mode calloc free malloc

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

_configthreadlocale

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

__setusermatherr

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

memcmp memcpy memmove

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

_set_app_type __p___argc __p___argv _cexit _configure_narrow_argv _crt_atexit _exit _fpreset _initialize_narrow_environment _initterm _initterm_e _set_invalid_parameter_handler abort exit signal

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

__acrt_iob_func __p__commode __p__fmode __stdio_common_vfprintf fflush setvbuf

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

memset strlen strncmp

ntdll

NtReadFile NtWriteFile RtlNtStatusToDosError

Name

.text

Size

933KB

Virtual Size

933KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rdata

Size

1.3MB

Virtual Size

1.3MB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.text01

Size

512B

Virtual Size

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

9KB

Virtual Size

8KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.xdata

Size

18KB

Virtual Size

17KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.bss

Size

Virtual Size

9KB

Characteristics

IMAGE_SCN_CNT_UNINITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.idata

Size

5KB

Virtual Size

5KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.tls

Size

512B

Virtual Size

16B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.reloc

Size

1KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

2026-07-27_4a8800b32840a6f91bde4d6303f37efc_akira_quasar-rat

PE Signature issue

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

kernel32

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

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

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

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

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

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

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

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

ntdll

generic