15898c3ebe5e17a8fe8678cac26d646f4f9c3e2e0d73884cea07262f8362b62f

Analysis

max time kernel
129s
max time network
146s
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, 01:28

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General

Target

15898c3ebe5e17a8fe8678cac26d646f4f9c3e2e0d73884cea07262f8362b62f.xls
Size

217KB
MD5

8eb1aca9f9899e0b6c5d610b662fbe2c
SHA1

c99bdded5ca97bddde9bbc85410d9bc38fb6a17c
SHA256

15898c3ebe5e17a8fe8678cac26d646f4f9c3e2e0d73884cea07262f8362b62f
SHA512

333cdbf3e60cca0494fd1df3ad3cf3bc5a36f8f7a31937cdeca3dc60cab2e6fd9249a6fd9e7cf1e3abdab17f182d5c4e0e51c0fe55273d24749f162b461b1d87
SSDEEP

6144:zKpb8rGYrMPe3q7Q0XV5xtuEsi8/dglyY+TAQXTHGUMEyP5p6f5jQm75nT:1bGUMVWlbp

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://app.clubdedocentes.com/storage/DCcq9ekgH99sI/

xlm40.dropper

http://linhkiendoc.com/app/payments/qoy5JqpLqrbsKl/

xlm40.dropper

http://sourcecool.com/throng/iOD/

xlm40.dropper

http://www.stickers-et-deco.com/Adapter/lYw/

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	1796	5032	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4268	5032	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4628	5032	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3828	5032	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
5032	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
5032	EXCEL.EXE
5032	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5032 wrote to memory of 1796	5032	EXCEL.EXE	68
PID 5032 wrote to memory of 1796	5032	EXCEL.EXE	68
PID 5032 wrote to memory of 4268	5032	EXCEL.EXE	69
PID 5032 wrote to memory of 4268	5032	EXCEL.EXE	69
PID 5032 wrote to memory of 4628	5032	EXCEL.EXE	70
PID 5032 wrote to memory of 4628	5032	EXCEL.EXE	70
PID 5032 wrote to memory of 3828	5032	EXCEL.EXE	71
PID 5032 wrote to memory of 3828	5032	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\15898c3ebe5e17a8fe8678cac26d646f4f9c3e2e0d73884cea07262f8362b62f.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:5032
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:1796
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4268
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4628
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3828

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/5032-121-0x00007FFD2BB70000-0x00007FFD2BB80000-memory.dmp

Filesize
64KB

Download
memory/5032-122-0x00007FFD2BB70000-0x00007FFD2BB80000-memory.dmp

Filesize
64KB

Download
memory/5032-131-0x00007FFD28D90000-0x00007FFD28DA0000-memory.dmp

Filesize
64KB

Download
memory/5032-132-0x00007FFD28D90000-0x00007FFD28DA0000-memory.dmp

Filesize
64KB

Download
memory/5032-120-0x00007FFD2BB70000-0x00007FFD2BB80000-memory.dmp

Filesize
64KB

Download
memory/5032-119-0x00007FFD2BB70000-0x00007FFD2BB80000-memory.dmp

Filesize
64KB

Download
memory/5032-293-0x00007FFD2BB70000-0x00007FFD2BB80000-memory.dmp

Filesize
64KB

Download
memory/5032-294-0x00007FFD2BB70000-0x00007FFD2BB80000-memory.dmp

Filesize
64KB

Download
memory/5032-295-0x00007FFD2BB70000-0x00007FFD2BB80000-memory.dmp

Filesize
64KB

Download
memory/5032-296-0x00007FFD2BB70000-0x00007FFD2BB80000-memory.dmp

Filesize
64KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads