Overview
overview
3Static
static
3blackcat.7z
windows7-x64
3blackcat.7z
windows10-2004-x64
3DecryptMyFiles.exe
windows7-x64
1DecryptMyFiles.exe
windows10-2004-x64
1NOTE.png
windows7-x64
3NOTE.png
windows10-2004-x64
3victim-fil....encry
windows7-x64
3victim-fil....encry
windows10-2004-x64
3victim-fil....encry
windows7-x64
3victim-fil....encry
windows10-2004-x64
3victim-fil....encry
windows7-x64
3victim-fil....encry
windows10-2004-x64
3victim-fil....encry
windows7-x64
3victim-fil....encry
windows10-2004-x64
3victim-fil....encry
windows7-x64
3victim-fil....encry
windows10-2004-x64
3Static task
static1
Behavioral task
behavioral1
Sample
blackcat.7z
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
blackcat.7z
Resource
win10v2004-20231020-en
Behavioral task
behavioral3
Sample
DecryptMyFiles.exe
Resource
win7-20231020-en
Behavioral task
behavioral4
Sample
DecryptMyFiles.exe
Resource
win10v2004-20231023-en
Behavioral task
behavioral5
Sample
NOTE.png
Resource
win7-20231023-en
Behavioral task
behavioral6
Sample
NOTE.png
Resource
win10v2004-20231023-en
Behavioral task
behavioral7
Sample
victim-files/Bliss_Windows_XP.png.encry
Resource
win7-20231025-en
Behavioral task
behavioral8
Sample
victim-files/Bliss_Windows_XP.png.encry
Resource
win10v2004-20231020-en
Behavioral task
behavioral9
Sample
victim-files/Huntress-Labs-Logo-and-Text-Black.png.encry
Resource
win7-20231023-en
Behavioral task
behavioral10
Sample
victim-files/Huntress-Labs-Logo-and-Text-Black.png.encry
Resource
win10v2004-20231020-en
Behavioral task
behavioral11
Sample
victim-files/flag.txt.encry
Resource
win7-20231020-en
Behavioral task
behavioral12
Sample
victim-files/flag.txt.encry
Resource
win10v2004-20231023-en
Behavioral task
behavioral13
Sample
victim-files/my-favorite-rock.jpg.encry
Resource
win7-20231023-en
Behavioral task
behavioral14
Sample
victim-files/my-favorite-rock.jpg.encry
Resource
win10v2004-20231020-en
Behavioral task
behavioral15
Sample
victim-files/the-entire-text-of-hamlet.txt.encry
Resource
win7-20231023-en
Behavioral task
behavioral16
Sample
victim-files/the-entire-text-of-hamlet.txt.encry
Resource
win10v2004-20231025-en
General
-
Target
blackcat.7z
-
Size
2.7MB
-
MD5
69530d4bb31c2b22c2ae982d56fe9cdb
-
SHA1
9900498d3ea68c1387d0fd88554c38f33435a6ad
-
SHA256
64356f5e5fa3119eb5ea040d2f49b567b5d0458b4caf9627e06c3761439a1746
-
SHA512
09bd2d240049999b7ebc7cad2481cfe7b6edcd542a3e97418789105771bb528a0a7c1b50e0c6b1c2af74877b9115e4d63bd27085aec647d6512b3ab9fcc96940
-
SSDEEP
49152:ZdLtYg7zhY81ZnbaEYDbuAw8DfJEz7Eb1Z03fndrQ49ZCb7bHSLRKuUlI6X0UO:7tYgDYHhw8rJEzqyv+vb7L8d
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/DecryptMyFiles.exe
Files
-
blackcat.7z.7z
Password: infected
-
DecryptMyFiles.exe.exe windows:6 windows x64
f0ea7b7844bbc5bfa9bb32efdcea957c
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED
Imports
kernel32
WriteFile
WriteConsoleW
WaitForMultipleObjects
WaitForSingleObject
VirtualQuery
VirtualFree
VirtualAlloc
TlsAlloc
SwitchToThread
SuspendThread
SetWaitableTimer
SetUnhandledExceptionFilter
SetProcessPriorityBoost
SetEvent
SetErrorMode
SetConsoleCtrlHandler
ResumeThread
PostQueuedCompletionStatus
LoadLibraryA
LoadLibraryW
SetThreadContext
GetThreadContext
GetSystemInfo
GetSystemDirectoryA
GetStdHandle
GetQueuedCompletionStatusEx
GetProcessAffinityMask
GetProcAddress
GetEnvironmentStringsW
GetConsoleMode
FreeEnvironmentStringsW
ExitProcess
DuplicateHandle
CreateWaitableTimerExW
CreateThread
CreateIoCompletionPort
CreateFileA
CreateEventA
CloseHandle
AddVectoredExceptionHandler
Sections
.text Size: 807KB - Virtual size: 807KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 844KB - Virtual size: 843KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 98KB - Virtual size: 453KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
/4 Size: 512B - Virtual size: 295B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/19 Size: 159KB - Virtual size: 158KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/32 Size: 29KB - Virtual size: 28KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/46 Size: 512B - Virtual size: 42B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/65 Size: 426KB - Virtual size: 426KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/78 Size: 165KB - Virtual size: 165KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
/90 Size: 51KB - Virtual size: 50KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.idata Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 14KB - Virtual size: 13KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.symtab Size: 149KB - Virtual size: 149KB
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
-
NOTE.png.png
-
victim-files/Bliss_Windows_XP.png.encry
-
victim-files/Huntress-Labs-Logo-and-Text-Black.png.encry
-
victim-files/flag.txt.encry
-
victim-files/my-favorite-rock.jpg.encry
-
victim-files/the-entire-text-of-hamlet.txt.encry