3a14fc5fc2bca0ed7dbad53171b4a002d0764b567954f80bfe4f1f6bb3d89396

Analysis

max time kernel
146s
max time network
148s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
09/11/2022, 16:49

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General

Target
3a14fc5fc2bca0ed7dbad53171b4a002d0764b567954f80bfe4f1f6bb3d89396.xls
Size 91KB
Sample221109-vbx3ysaee2
SHA256 3a14fc5fc2bca0ed7dbad53171b4a002d0764b567954f80bfe4f1f6bb3d89396
MD5 46b2b03d87f5a2db2dd70dbb98141b60
SHA1 16c3740db5d06a0ad31f936f2b56254305234653
SHA512 372a8adf2c850e99feda6a1d9608b43fb8aa017b57752d3d5c13286ba7279eeff2a1a37c11cf9d71defc7e440fde9eb5d972c0b26ddd68652a065824c264c0f4
SSDEEP 1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZcEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg1
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://www.muyehuayi.com/cmp/8asA99KPsyA/v6lUsWbLen/
xlm40.dropper
http://concivilpa.com.py/wp-admin/i3CQu9dzDrMW/
xlm40.dropper
https://wijsneusmedia.nl/cgi-bin/kFB/
xlm40.dropper
http://www.angloextrema.com.br/assets/oEt1yYckHKlnNIq/

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	5064	4828	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4692	4828	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4436	4828	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3088	4828	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
4828	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4828	EXCEL.EXE
4828	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4828	EXCEL.EXE
4828	EXCEL.EXE
4828	EXCEL.EXE
4828	EXCEL.EXE
4828	EXCEL.EXE
4828	EXCEL.EXE
4828	EXCEL.EXE
4828	EXCEL.EXE
4828	EXCEL.EXE
4828	EXCEL.EXE
4828	EXCEL.EXE
4828	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4828 wrote to memory of 5064	4828	EXCEL.EXE	68
PID 4828 wrote to memory of 5064	4828	EXCEL.EXE	68
PID 4828 wrote to memory of 4692	4828	EXCEL.EXE	69
PID 4828 wrote to memory of 4692	4828	EXCEL.EXE	69
PID 4828 wrote to memory of 4436	4828	EXCEL.EXE	70
PID 4828 wrote to memory of 4436	4828	EXCEL.EXE	70
PID 4828 wrote to memory of 3088	4828	EXCEL.EXE	71
PID 4828 wrote to memory of 3088	4828	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\3a14fc5fc2bca0ed7dbad53171b4a002d0764b567954f80bfe4f1f6bb3d89396.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:4828
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:5064
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4692
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4436
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:3088

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/4828-120-0x00007FF9500F0000-0x00007FF950100000-memory.dmp

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memory/4828-121-0x00007FF9500F0000-0x00007FF950100000-memory.dmp

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memory/4828-122-0x00007FF9500F0000-0x00007FF950100000-memory.dmp

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memory/4828-123-0x00007FF9500F0000-0x00007FF950100000-memory.dmp

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memory/4828-132-0x00007FF94CC80000-0x00007FF94CC90000-memory.dmp

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memory/4828-133-0x00007FF94CC80000-0x00007FF94CC90000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads