50f5316c84df540350104b16bed310b39f26ea082114e95c47f042619ddebb40

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
03/01/2023, 03:26

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General

Target

a821b7d549ed8c03d8824bad80e2da2c7d212a096a43c82a1cbc3a9308256916.xls
Size

255KB
MD5

2d32da58b535b67699209af9b4506a05
SHA1

f65a977eb348add12ea8136e1dd63bd5041ce348
SHA256

a821b7d549ed8c03d8824bad80e2da2c7d212a096a43c82a1cbc3a9308256916
SHA512

ffc90596060b379626e7b0b2ff565407c7a9340cfeca1d0f6df4d91023403d286f30db8b85f542ebb9e4f63a6c513be047c05ab2aa658e61564e9be896be2405
SSDEEP

6144:JKpb8rGYrMPe3q7Q0XV5xtuEsi8/dggNiwrfx9rNFMMrttRzV5Dz3UxqC8LUcS6:nNbDjP9XH5XIqZLnS6

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://cpcwiki.de/images/rirOpdztUEfG7WJ/

xlm40.dropper

https://www.conceptagency.net/css/zXC/

xlm40.dropper

http://a.angel-tn.idv.tw/web_images/aa7fEDOPvT2F1i/

xlm40.dropper

http://www.atashelement.ir/qds-seo-url-autofill/tmSetsq0wxsmXdA/

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	1648	1480	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	312	1480	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4284	1480	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1904	1480	regsvr32.exe	81

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
1480	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1480 wrote to memory of 1648	1480	EXCEL.EXE	84
PID 1480 wrote to memory of 1648	1480	EXCEL.EXE	84
PID 1480 wrote to memory of 312	1480	EXCEL.EXE	85
PID 1480 wrote to memory of 312	1480	EXCEL.EXE	85
PID 1480 wrote to memory of 4284	1480	EXCEL.EXE	86
PID 1480 wrote to memory of 4284	1480	EXCEL.EXE	86
PID 1480 wrote to memory of 1904	1480	EXCEL.EXE	87
PID 1480 wrote to memory of 1904	1480	EXCEL.EXE	87

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\a821b7d549ed8c03d8824bad80e2da2c7d212a096a43c82a1cbc3a9308256916.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:1648
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:312
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4284
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:1904

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/1480-132-0x00007FF891850000-0x00007FF891860000-memory.dmp

Filesize
64KB

Download
memory/1480-133-0x00007FF891850000-0x00007FF891860000-memory.dmp

Filesize
64KB

Download
memory/1480-134-0x00007FF891850000-0x00007FF891860000-memory.dmp

Filesize
64KB

Download
memory/1480-135-0x00007FF891850000-0x00007FF891860000-memory.dmp

Filesize
64KB

Download
memory/1480-136-0x00007FF891850000-0x00007FF891860000-memory.dmp

Filesize
64KB

Download
memory/1480-137-0x00007FF88F1E0000-0x00007FF88F1F0000-memory.dmp

Filesize
64KB

Download
memory/1480-138-0x00007FF88F1E0000-0x00007FF88F1F0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads