DllMain@12
Overview
overview
10Static
static
10TekDefense.exe
windows7-x64
7TekDefense.exe
windows10-2004-x64
7index 2.html
windows7-x64
1index 2.html
windows10-2004-x64
1index2 2.html
windows7-x64
1index2 2.html
windows10-2004-x64
1index3 2.html
windows7-x64
1index3 2.html
windows10-2004-x64
1ransomware.exe
windows7-x64
7ransomware.exe
windows10-2004-x64
7tekdefense.dll
windows7-x64
10tekdefense.dll
windows10-2004-x64
5Behavioral task
behavioral1
Sample
TekDefense.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
TekDefense.exe
Resource
win10v2004-20230220-en
Behavioral task
behavioral3
Sample
index 2.html
Resource
win7-20230220-en
Behavioral task
behavioral4
Sample
index 2.html
Resource
win10v2004-20230220-en
Behavioral task
behavioral5
Sample
index2 2.html
Resource
win7-20230220-en
Behavioral task
behavioral6
Sample
index2 2.html
Resource
win10v2004-20230220-en
Behavioral task
behavioral7
Sample
index3 2.html
Resource
win7-20230220-en
Behavioral task
behavioral8
Sample
index3 2.html
Resource
win10v2004-20230221-en
Behavioral task
behavioral9
Sample
ransomware.exe
Resource
win7-20230220-en
Behavioral task
behavioral10
Sample
ransomware.exe
Resource
win10v2004-20230220-en
Behavioral task
behavioral11
Sample
tekdefense.dll
Resource
win7-20230220-en
Behavioral task
behavioral12
Sample
tekdefense.dll
Resource
win10v2004-20230220-en
General
-
Target
TekDefense.7z
-
Size
797KB
-
MD5
c82d09221968ed5704ab50846de38f5b
-
SHA1
08309adceb9635a1079145478aa0effe3d1eeeaf
-
SHA256
803eb608ac54661ccf23259c6a8d07fdc26bd83788a661dbd0cf1a08022d4a0f
-
SHA512
0f97ea615aa8f62f05e880b14b6207b24b6f8a924c5c7464bebb6cb6b6b6ccc7bbfcb381caf951ddf1d4845b6e758b450f4b4ae8a15b6b5abfd2e9e24f56f427
-
SSDEEP
24576:56n+Kxq0SkvyymIRXjFuY08ub0D0/QgvWcNFK31M:56nZvqymyj68oQgvz/K31M
Malware Config
Extracted
metasploit
windows/download_exec
http://zwned.tekdefense.com:80/JpHZ
Signatures
-
Metasploit family
-
resource yara_rule static1/unpack002/TekDefense.exe upx static1/unpack004/ransomware.exe upx -
AutoIT Executable 2 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule static1/unpack003/out.upx autoit_exe static1/unpack005/out.upx autoit_exe
Files
-
TekDefense.7z.7z
Password: infected
-
TekDefense.zip.zip
Password: infected
-
TekDefense.exe.exe windows x86
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Sections
UPX0 Size: - Virtual size: 472KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 264KB - Virtual size: 268KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 29KB - Virtual size: 32KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
-
out.upx.exe windows x86
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Sections
.text Size: 514KB - Virtual size: 513KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 56KB - Virtual size: 55KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 26KB - Virtual size: 105KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 37KB - Virtual size: 36KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
-
ransomware.zip.zip
Password: infected
-
index 2.html.html
-
index2 2.html.html
-
index3 2.html
-
ransomware.exe.exe windows x86
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Sections
UPX0 Size: - Virtual size: 560KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 264KB - Virtual size: 268KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 118KB - Virtual size: 120KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
-
out.upx.exe windows x86
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Sections
.text Size: 514KB - Virtual size: 513KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 56KB - Virtual size: 55KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 26KB - Virtual size: 105KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 126KB - Virtual size: 125KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
-
tekdefense.dll.dll windows x86
0b7b4c8fba119fc8ba64403e1ce2bcf1
Headers
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DEBUG_STRIPPED
Imports
kernel32
CloseHandle
CreateMutexA
CreateProcessA
GetLastError
GetModuleHandleA
GetProcAddress
GetThreadContext
ResumeThread
SetThreadContext
VirtualAllocEx
WriteProcessMemory
msvcrt
__dllonexit
_errno
fflush
free
malloc
memset
Exports
Exports
Sections
.text Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 8KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 512B - Virtual size: 64B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.bss Size: - Virtual size: 68B
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.edata Size: 512B - Virtual size: 80B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.idata Size: 1024B - Virtual size: 584B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 512B - Virtual size: 212B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 512B - Virtual size: 240B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ