b27a47cd68c05e9f548e611dc0f69042553c69fe3ee0553a4ccdb7c07227dd72

Analysis

max time kernel
133s
max time network
136s
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, 01:04

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General

Target

b27a47cd68c05e9f548e611dc0f69042553c69fe3ee0553a4ccdb7c07227dd72.xls
Size

217KB
MD5

50cb7d4fbd11661ca03adbfe19b95eef
SHA1

acd4c1fd2786bfa55cae3e37d15b7d56b4f12f05
SHA256

b27a47cd68c05e9f548e611dc0f69042553c69fe3ee0553a4ccdb7c07227dd72
SHA512

4da0e90159686fe41af6a0d4b581e8b50e83b6532851f5d9059fc4e2d5ab1d07796a8883d2fec4f0e50603d1623b21ad54c51bf777a314ea4eb37c359021b041
SSDEEP

6144:zKpb8rGYrMPe3q7Q0XV5xtuEsi8/dglyY+TAQXTHGUMEyP5p6f5jQm7lnT:1bGUMVWlbN

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	3552	2940	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4220	2940	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4932	2940	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4912	2940	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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
2940	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2940	EXCEL.EXE
2940	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 3552	2940	EXCEL.EXE	68
PID 2940 wrote to memory of 3552	2940	EXCEL.EXE	68
PID 2940 wrote to memory of 4220	2940	EXCEL.EXE	69
PID 2940 wrote to memory of 4220	2940	EXCEL.EXE	69
PID 2940 wrote to memory of 4932	2940	EXCEL.EXE	70
PID 2940 wrote to memory of 4932	2940	EXCEL.EXE	70
PID 2940 wrote to memory of 4912	2940	EXCEL.EXE	71
PID 2940 wrote to memory of 4912	2940	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\b27a47cd68c05e9f548e611dc0f69042553c69fe3ee0553a4ccdb7c07227dd72.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:2940
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3552
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4220
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4932
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4912

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/2940-291-0x00007FF7E7C00000-0x00007FF7E7C10000-memory.dmp

Filesize
64KB

Download
memory/2940-119-0x00007FF7E7C00000-0x00007FF7E7C10000-memory.dmp

Filesize
64KB

Download
memory/2940-120-0x00007FF7E7C00000-0x00007FF7E7C10000-memory.dmp

Filesize
64KB

Download
memory/2940-121-0x00007FF7E7C00000-0x00007FF7E7C10000-memory.dmp

Filesize
64KB

Download
memory/2940-130-0x00007FF7E4140000-0x00007FF7E4150000-memory.dmp

Filesize
64KB

Download
memory/2940-131-0x00007FF7E4140000-0x00007FF7E4150000-memory.dmp

Filesize
64KB

Download
memory/2940-118-0x00007FF7E7C00000-0x00007FF7E7C10000-memory.dmp

Filesize
64KB

Download
memory/2940-294-0x00007FF7E7C00000-0x00007FF7E7C10000-memory.dmp

Filesize
64KB

Download
memory/2940-293-0x00007FF7E7C00000-0x00007FF7E7C10000-memory.dmp

Filesize
64KB

Download
memory/2940-292-0x00007FF7E7C00000-0x00007FF7E7C10000-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