Analysis
-
max time kernel
149s -
max time network
145s -
platform
windows10_x64 -
resource
win10-20220414-en -
submitted
07-07-2022 04:26
Behavioral task
behavioral1
Sample
38f5da89a1995b071b6cf94fddea9ab34cf689640cf5b25854ce51552e4e91ec.xls
Resource
win10-20220414-en
Behavioral task
behavioral2
Sample
38f5da89a1995b071b6cf94fddea9ab34cf689640cf5b25854ce51552e4e91ec.xls
Resource
win10-20220414-en
General
-
Target
38f5da89a1995b071b6cf94fddea9ab34cf689640cf5b25854ce51552e4e91ec.xls
-
Size
95KB
-
MD5
2169c8c4560eeec82620201d1aae5dac
-
SHA1
b269c13aecc3fec066a2c77213f259d94fc9e3b7
-
SHA256
38f5da89a1995b071b6cf94fddea9ab34cf689640cf5b25854ce51552e4e91ec
-
SHA512
43a5144bae8da36e6afbff3fb20d6fc1256e4f60d383583f585a063eb7d3700d6d37f03ffd007f53c8bb8a71d1aef3b12b5865fcb703c45ed22fde0bec0886ae
Malware Config
Extracted
https://edoraseguros.com.br/cgi-bin/jQNq9wlH1GXU/
http://earthmach.co.za/libraries/tWkZh9YrXbTd6IeX/
http://finvest.rs/wp-admin/Hr9nVNTIHgw59S/
http://efverstedt.se/5jjaV/w7fLEHJ20xn0qD/
Signatures
-
Process spawned unexpected child process 4 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
regsvr32.exeregsvr32.exeregsvr32.exeregsvr32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4500 4108 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4984 4108 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4988 4108 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4908 4108 regsvr32.exe EXCEL.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 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 Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 4108 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 4108 EXCEL.EXE 4108 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 4108 EXCEL.EXE 4108 EXCEL.EXE 4108 EXCEL.EXE 4108 EXCEL.EXE 4108 EXCEL.EXE 4108 EXCEL.EXE 4108 EXCEL.EXE 4108 EXCEL.EXE 4108 EXCEL.EXE 4108 EXCEL.EXE 4108 EXCEL.EXE 4108 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 4108 wrote to memory of 4500 4108 EXCEL.EXE regsvr32.exe PID 4108 wrote to memory of 4500 4108 EXCEL.EXE regsvr32.exe PID 4108 wrote to memory of 4984 4108 EXCEL.EXE regsvr32.exe PID 4108 wrote to memory of 4984 4108 EXCEL.EXE regsvr32.exe PID 4108 wrote to memory of 4988 4108 EXCEL.EXE regsvr32.exe PID 4108 wrote to memory of 4988 4108 EXCEL.EXE regsvr32.exe PID 4108 wrote to memory of 4908 4108 EXCEL.EXE regsvr32.exe PID 4108 wrote to memory of 4908 4108 EXCEL.EXE regsvr32.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\38f5da89a1995b071b6cf94fddea9ab34cf689640cf5b25854ce51552e4e91ec.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci1.ocx2⤵
- Process spawned unexpected child process
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci2.ocx2⤵
- Process spawned unexpected child process
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci3.ocx2⤵
- Process spawned unexpected child process
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci4.ocx2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/4108-117-0x00007FFB4FA70000-0x00007FFB4FA80000-memory.dmpFilesize
64KB
-
memory/4108-118-0x00007FFB4FA70000-0x00007FFB4FA80000-memory.dmpFilesize
64KB
-
memory/4108-120-0x00007FFB4FA70000-0x00007FFB4FA80000-memory.dmpFilesize
64KB
-
memory/4108-119-0x00007FFB4FA70000-0x00007FFB4FA80000-memory.dmpFilesize
64KB
-
memory/4108-129-0x00007FFB4CA70000-0x00007FFB4CA80000-memory.dmpFilesize
64KB
-
memory/4108-130-0x00007FFB4CA70000-0x00007FFB4CA80000-memory.dmpFilesize
64KB
-
memory/4500-253-0x0000000000000000-mapping.dmp
-
memory/4908-256-0x0000000000000000-mapping.dmp
-
memory/4984-254-0x0000000000000000-mapping.dmp
-
memory/4988-255-0x0000000000000000-mapping.dmp