Overview
overview
10Static
static
10server.exe
windows7-x64
8server.exe
windows10-2004-x64
8server.out
ubuntu-18.04-amd64
7socks.out
ubuntu-18.04-amd64
7www/system...ip2.js
windows7-x64
1www/system...ip2.js
windows10-2004-x64
1www/system...x.html
windows7-x64
1www/system...x.html
windows10-2004-x64
1www/system...ord.js
windows7-x64
1www/system...ord.js
windows10-2004-x64
1Behavioral task
behavioral1
Sample
server.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
server.exe
Resource
win10v2004-20230220-en
Behavioral task
behavioral3
Sample
server.out
Resource
ubuntu1804-amd64-20221125-en
Behavioral task
behavioral4
Sample
socks.out
Resource
ubuntu1804-amd64-20221111-en
Behavioral task
behavioral5
Sample
www/systembc/geoip/geoip2.js
Resource
win7-20230220-en
Behavioral task
behavioral6
Sample
www/systembc/geoip/geoip2.js
Resource
win10v2004-20230220-en
Behavioral task
behavioral7
Sample
www/systembc/index.html
Resource
win7-20230220-en
Behavioral task
behavioral8
Sample
www/systembc/index.html
Resource
win10v2004-20230220-en
Behavioral task
behavioral9
Sample
www/systembc/password.js
Resource
win7-20230220-en
Behavioral task
behavioral10
Sample
www/systembc/password.js
Resource
win10v2004-20230220-en
General
-
Target
35da946b55a7125ac91be532a686c501.zip
-
Size
27.3MB
-
MD5
124c7d3fd6012d5e1236d66d35da9cb2
-
SHA1
430ed90e5b2d603e43745b1a62a8d66039b1c811
-
SHA256
d817131a06e282101d1da0a44df9b273f2c65bd0f4dd7cd9ef8e74ed49ce57e4
-
SHA512
8554ca61eef6136efd5fbedc4c68aaaa9dca77723ed596fd5950a3f2f99f3a1d8776ef7f4ec39ccf88d9c8ebd5d0cb5a073f777aaf6ea8701869948774d2f73a
-
SSDEEP
786432:+1HVpI/ZHgDZAgSjEcIiQKFoPIj84PLNA57cZqToX:a1emAGnbIj84PJAcZG4
Malware Config
Extracted
systembc
87.244.158.94
Signatures
-
Systembc family
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource unpack001/server.exe
Files
-
35da946b55a7125ac91be532a686c501.zip.zip
-
install.txt
-
server.exe.exe windows x64
20293b10112f971cfd5c0d157ef0eef1
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
user32
wsprintfA
MessageBoxA
ws2_32
shutdown
recv
send
WSAIoctl
select
WSACleanup
accept
closesocket
listen
bind
htons
htonl
setsockopt
socket
WSAStartup
connect
ioctlsocket
advapi32
RegisterServiceCtrlHandlerA
SetServiceStatus
StartServiceA
OpenServiceA
CloseServiceHandle
CreateServiceA
OpenSCManagerA
StartServiceCtrlDispatcherA
kernel32
WaitForSingleObject
SystemTimeToFileTime
GetSystemTimeAsFileTime
TerminateThread
CreateEventA
VirtualFree
SetEvent
CloseHandle
GetFileSize
CreateFileA
SetUnhandledExceptionFilter
VirtualAlloc
SetFilePointer
WriteFile
ReadFile
GetStdHandle
WriteConsoleA
CopyFileA
GetModuleFileNameA
CreateThread
Sleep
SetCurrentDirectoryA
CreateDirectoryA
ExitProcess
shell32
ShellExecuteExA
Sections
.text Size: 15KB - Virtual size: 15KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 1024B - Virtual size: 18.0MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 512B - Virtual size: 372B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 60B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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server.out.elf linux x64
-
socks.out.elf linux x64
-
www/systembc/geoip/GeoLite2-City.mmdb
-
www/systembc/geoip/geoip2.phar.js
-
www/systembc/index.html
-
www/systembc/password.php.js