033289fc9c493780387a378e49df474c5e1057310fd521fe04a946997a85fa1c

Analysis

max time kernel
127s
max time network
147s
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, 08:24

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General

Target

033289fc9c493780387a378e49df474c5e1057310fd521fe04a946997a85fa1c.xls
Size

217KB
MD5

8442e5bdd2df12d6ca090d5b8272a2a0
SHA1

fe42e18f69f97aae9e7471c9c9a5699b63ea031c
SHA256

033289fc9c493780387a378e49df474c5e1057310fd521fe04a946997a85fa1c
SHA512

86cb6048fe0e41c2df29c5c95ace3aad8170813b36b9ec23e60ebf956bb434cc80cceedadd9c401c642126d948d0aee3c5ae49bb644ce3cc83117eee66fe7814
SSDEEP

6144:zKpb8rGYrMPe3q7Q0XV5xtuEsi8/dg3yY+TAQXTHGUMEyP5p6f5jQmQ:TbGUMVWlbQ

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://wijsneusmedia.nl/cgi-bin/DvxmZndf0/

xlm40.dropper

http://brittknight.com/PHP/Aqxf09OugZ/

xlm40.dropper

http://nlasandbox.com/facebookpage/JFqg2Aqkl3UPZi6xGz/

xlm40.dropper

http://www.campusconindigital.org/moodle/LumMe/

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	3964	3800	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4956	3800	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3836	3800	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4544	3800	regsvr32.exe	65

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	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

Query Registry

T1012

System Information Discovery

T1082

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
3800	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3800	EXCEL.EXE
3800	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3800	EXCEL.EXE
3800	EXCEL.EXE
3800	EXCEL.EXE
3800	EXCEL.EXE
3800	EXCEL.EXE
3800	EXCEL.EXE
3800	EXCEL.EXE
3800	EXCEL.EXE
3800	EXCEL.EXE
3800	EXCEL.EXE
3800	EXCEL.EXE
3800	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3800 wrote to memory of 3964	3800	EXCEL.EXE	68
PID 3800 wrote to memory of 3964	3800	EXCEL.EXE	68
PID 3800 wrote to memory of 4956	3800	EXCEL.EXE	69
PID 3800 wrote to memory of 4956	3800	EXCEL.EXE	69
PID 3800 wrote to memory of 3836	3800	EXCEL.EXE	70
PID 3800 wrote to memory of 3836	3800	EXCEL.EXE	70
PID 3800 wrote to memory of 4544	3800	EXCEL.EXE	71
PID 3800 wrote to memory of 4544	3800	EXCEL.EXE	71

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\033289fc9c493780387a378e49df474c5e1057310fd521fe04a946997a85fa1c.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:3800
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3964
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4956
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3836
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4544

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3800-313-0x00007FFE4C930000-0x00007FFE4C940000-memory.dmp

Filesize
64KB

Download
memory/3800-117-0x00007FFE4C930000-0x00007FFE4C940000-memory.dmp

Filesize
64KB

Download
memory/3800-118-0x00007FFE4C930000-0x00007FFE4C940000-memory.dmp

Filesize
64KB

Download
memory/3800-119-0x00007FFE4C930000-0x00007FFE4C940000-memory.dmp

Filesize
64KB

Download
memory/3800-128-0x00007FFE48FF0000-0x00007FFE49000000-memory.dmp

Filesize
64KB

Download
memory/3800-129-0x00007FFE48FF0000-0x00007FFE49000000-memory.dmp

Filesize
64KB

Download
memory/3800-116-0x00007FFE4C930000-0x00007FFE4C940000-memory.dmp

Filesize
64KB

Download
memory/3800-315-0x00007FFE4C930000-0x00007FFE4C940000-memory.dmp

Filesize
64KB

Download
memory/3800-314-0x00007FFE4C930000-0x00007FFE4C940000-memory.dmp

Filesize
64KB

Download
memory/3800-312-0x00007FFE4C930000-0x00007FFE4C940000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads