Analysis
-
max time kernel
102s -
max time network
135s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
21-04-2021 16:09
Static task
static1
Behavioral task
behavioral1
Sample
Invoice #535576.xlsm
Resource
win7v20210410
General
-
Target
Invoice #535576.xlsm
-
Size
161KB
-
MD5
c02eba6c5cb189c3dfd85199b785077b
-
SHA1
7b1c517e64a46840a9da597496325a30ab7f42a1
-
SHA256
3bd55c9e2fdcd1b707612af00bcc75f5e11640d9d9952ddf3a68d107f27f9102
-
SHA512
d3d88facce07bc5bb573ec6cb895e40220c5dca9e36437aaf19739fd6ec6c38473cee8c2a82ec0ee411404e6b9e62c68d2cc2761346087c41d1dca524e0809bb
Malware Config
Signatures
-
Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3492 1016 rundll32.exe EXCEL.EXE -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 2144 rundll32.exe -
Processes:
rundll32.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1016 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 1016 EXCEL.EXE 1016 EXCEL.EXE 1016 EXCEL.EXE 1016 EXCEL.EXE 1016 EXCEL.EXE 1016 EXCEL.EXE 1016 EXCEL.EXE 1016 EXCEL.EXE 1016 EXCEL.EXE 1016 EXCEL.EXE 1016 EXCEL.EXE 1016 EXCEL.EXE -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
EXCEL.EXErundll32.exedescription pid process target process PID 1016 wrote to memory of 3492 1016 EXCEL.EXE rundll32.exe PID 1016 wrote to memory of 3492 1016 EXCEL.EXE rundll32.exe PID 3492 wrote to memory of 2144 3492 rundll32.exe rundll32.exe PID 3492 wrote to memory of 2144 3492 rundll32.exe rundll32.exe PID 3492 wrote to memory of 2144 3492 rundll32.exe rundll32.exe
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Invoice #535576.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Roaming\20533..dll" JsVarAddRef2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Roaming\20533..dll" JsVarAddRef3⤵
- Loads dropped DLL
- Checks whether UAC is enabled
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Roaming\20533..dllMD5
4d81b85d1242d6ecb66861b8e0dc4eee
SHA112a5d2dbfc18bd57abc0d3ddbdf2481139a652dd
SHA25625bef943b9c4a61089dfdd15c60afcc7eedfdbd997e284058e034f1e9ca7fd17
SHA512d9ede17f611916bd1dff6a069fd7b4ee52ab8486f75f9ce01e4294abf648fe8ce0461be03f4a3c2cd08c7f2bcb09e3294a5f1bebae1f94103d2102dbbff5103d
-
\Users\Admin\AppData\Roaming\20533..dllMD5
4d81b85d1242d6ecb66861b8e0dc4eee
SHA112a5d2dbfc18bd57abc0d3ddbdf2481139a652dd
SHA25625bef943b9c4a61089dfdd15c60afcc7eedfdbd997e284058e034f1e9ca7fd17
SHA512d9ede17f611916bd1dff6a069fd7b4ee52ab8486f75f9ce01e4294abf648fe8ce0461be03f4a3c2cd08c7f2bcb09e3294a5f1bebae1f94103d2102dbbff5103d
-
memory/1016-117-0x00007FFC964C0000-0x00007FFC964D0000-memory.dmpFilesize
64KB
-
memory/1016-114-0x00007FF78D2B0000-0x00007FF790866000-memory.dmpFilesize
53.7MB
-
memory/1016-118-0x00007FFC964C0000-0x00007FFC964D0000-memory.dmpFilesize
64KB
-
memory/1016-121-0x00007FFC964C0000-0x00007FFC964D0000-memory.dmpFilesize
64KB
-
memory/1016-122-0x00007FFCB6D90000-0x00007FFCB7E7E000-memory.dmpFilesize
16.9MB
-
memory/1016-123-0x00000266B65C0000-0x00000266B84B5000-memory.dmpFilesize
31.0MB
-
memory/1016-116-0x00007FFC964C0000-0x00007FFC964D0000-memory.dmpFilesize
64KB
-
memory/1016-115-0x00007FFC964C0000-0x00007FFC964D0000-memory.dmpFilesize
64KB
-
memory/2144-181-0x0000000000000000-mapping.dmp
-
memory/2144-183-0x0000000000AA0000-0x0000000000AA6000-memory.dmpFilesize
24KB
-
memory/3492-179-0x0000000000000000-mapping.dmp