Overview
overview
7Static
static
3rsmb.zip
windows7-x64
1rsmb.zip
windows10-2004-x64
1rsmb/RSMB4...ll.exe
windows7-x64
7rsmb/RSMB4...ll.exe
windows10-2004-x64
7rsmb/RSMB5 AE.zip
windows7-x64
1rsmb/RSMB5 AE.zip
windows10-2004-x64
1rsmb/keys/...ls.rtf
windows7-x64
4rsmb/keys/...ls.rtf
windows10-2004-x64
1rsmb/keys/key 1.txt
windows7-x64
1rsmb/keys/key 1.txt
windows10-2004-x64
1Static task
static1
Behavioral task
behavioral1
Sample
rsmb.zip
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
rsmb.zip
Resource
win10v2004-20230915-en
Behavioral task
behavioral3
Sample
rsmb/RSMB4.12AEInstall.exe
Resource
win7-20230831-en
Behavioral task
behavioral4
Sample
rsmb/RSMB4.12AEInstall.exe
Resource
win10v2004-20230915-en
Behavioral task
behavioral5
Sample
rsmb/RSMB5 AE.zip
Resource
win7-20230831-en
Behavioral task
behavioral6
Sample
rsmb/RSMB5 AE.zip
Resource
win10v2004-20230915-en
Behavioral task
behavioral7
Sample
rsmb/keys/RSMB 4.04 Serials.rtf
Resource
win7-20230831-en
Behavioral task
behavioral8
Sample
rsmb/keys/RSMB 4.04 Serials.rtf
Resource
win10v2004-20230915-en
Behavioral task
behavioral9
Sample
rsmb/keys/key 1.txt
Resource
win7-20230831-en
Behavioral task
behavioral10
Sample
rsmb/keys/key 1.txt
Resource
win10v2004-20230915-en
General
-
Target
rsmb.zip
-
Size
36.6MB
-
MD5
a9faf391780ff25823e5cc9d2a8161b2
-
SHA1
597200ad1a0de5dc832abd7cf1fa02e9869f9dc3
-
SHA256
fba6fe2b789a5edb5935c04b7c91dc66e94af709b41bc5dceb9f2a715326728c
-
SHA512
d7cc0b9675d5dbe742517145fd4daebc358ef4b19e93a622728b013e2a72c9507eba6e416456a921bed17193d46f866eff6460b06f4b0137ad879c13e2cb372d
-
SSDEEP
786432:FVRbGNfCl2HNVcZAYEwHpukoEaAnRatWste4Esvjsosp:TRbGt3Kk5AnAWstwyjDi
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/rsmb/RSMB4.12AEInstall.exe
Files
-
rsmb.zip.zip
-
rsmb/RSMB4.12AEInstall.exe.exe windows:4 windows x86
c5319e076a4e8512805ca6dc9210f0f6
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Imports
kernel32
FindClose
FindFirstFileA
lstrlenA
lstrcpyA
GetWindowsDirectoryA
lstrcatA
RemoveDirectoryA
FindNextFileA
DeleteFileA
lstrcmpA
SetFileAttributesA
LocalFileTimeToFileTime
DosDateTimeToFileTime
_lcreat
_lread
GetProcAddress
FreeLibrary
GetVersionExA
GetLastError
GetCurrentProcess
_llseek
GetModuleFileNameA
GetTempPathA
GlobalFree
GlobalAlloc
HeapReAlloc
VirtualAlloc
SetEnvironmentVariableA
_lopen
SetFileTime
LoadLibraryA
_lclose
_hread
_hwrite
CreateDirectoryA
GetTimeZoneInformation
GetSystemTime
GetLocalTime
FileTimeToSystemTime
FileTimeToLocalFileTime
GetDriveTypeA
GetModuleHandleA
GetStartupInfoA
GetCommandLineA
GetVersion
ExitProcess
GetCPInfo
GetACP
GetOEMCP
WideCharToMultiByte
TerminateProcess
GetFullPathNameA
GetCurrentDirectoryA
MultiByteToWideChar
LCMapStringA
LCMapStringW
UnhandledExceptionFilter
FreeEnvironmentStringsA
FreeEnvironmentStringsW
GetEnvironmentStrings
GetEnvironmentStringsW
SetHandleCount
GetStdHandle
GetFileType
HeapDestroy
HeapCreate
VirtualFree
HeapFree
RtlUnwind
WriteFile
HeapAlloc
GetStringTypeA
GetStringTypeW
CompareStringA
CompareStringW
user32
ExitWindowsEx
LoadIconA
wsprintfA
MessageBoxA
advapi32
LookupPrivilegeValueA
AdjustTokenPrivileges
OpenProcessToken
Sections
.text Size: 48KB - Virtual size: 44KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 4KB - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 4KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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rsmb/RSMB5 AE.zip.zip
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rsmb/keys/RSMB 4.04 Serials.rtf.rtf
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rsmb/keys/key 1.txt