Analysis
-
max time kernel
127s -
max time network
145s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
04/11/2022, 03:02
Behavioral task
behavioral1
Sample
a676b61910e1205f39e50700f6162075bc3cd41df4a0d5f26d797469e376551c.xls
Resource
win10-20220812-en
Behavioral task
behavioral2
Sample
a676b61910e1205f39e50700f6162075bc3cd41df4a0d5f26d797469e376551c.xls
Resource
win10-20220812-en
General
-
Target
a676b61910e1205f39e50700f6162075bc3cd41df4a0d5f26d797469e376551c.xls
-
Size
217KB
-
MD5
aac58dfb2c0812806ff01f29d59352e2
-
SHA1
a1f0158b128119acebda88993527af6d869a93be
-
SHA256
a676b61910e1205f39e50700f6162075bc3cd41df4a0d5f26d797469e376551c
-
SHA512
1b488962ce77dc0a53e79aff563727f3ef23cf0ead73cba9e23bf39d0fd445cbb4e1b6257552ef238ff22a8cef436b4edeb069e2220f21402bd39b1676f05529
-
SSDEEP
6144:zKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgXyY+TAQXTHGUMEyP5p6f5jQma:DbGUMVWlba
Malware Config
Extracted
https://barkstage.es/wp-content/0E7NdYl7TZuHMJq7/
http://contactworks.nl/images_old/NuEAhfF0PCFhvv/
http://www.iam.ch/wp-content/cache/minify/O1OAjWnfen/
https://www.elaboro.pl/wp-admin/J0hwyIMsk9YFIi/
Signatures
-
Process spawned unexpected child process 4 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4504 2780 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2264 2780 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4248 2780 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4524 2780 regsvr32.exe 65 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description 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
description 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
pid Process 2780 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2780 EXCEL.EXE 2780 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2780 wrote to memory of 4504 2780 EXCEL.EXE 68 PID 2780 wrote to memory of 4504 2780 EXCEL.EXE 68 PID 2780 wrote to memory of 2264 2780 EXCEL.EXE 69 PID 2780 wrote to memory of 2264 2780 EXCEL.EXE 69 PID 2780 wrote to memory of 4248 2780 EXCEL.EXE 70 PID 2780 wrote to memory of 4248 2780 EXCEL.EXE 70 PID 2780 wrote to memory of 4524 2780 EXCEL.EXE 71 PID 2780 wrote to memory of 4524 2780 EXCEL.EXE 71
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\a676b61910e1205f39e50700f6162075bc3cd41df4a0d5f26d797469e376551c.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
PID:2780 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx2⤵
- Process spawned unexpected child process
PID:4504
-
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx2⤵
- Process spawned unexpected child process
PID:2264
-
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx2⤵
- Process spawned unexpected child process
PID:4248
-
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx2⤵
- Process spawned unexpected child process
PID:4524
-