a4e2ecad319b07e94cc94fbf0babe25662d03588749f04c8c051dc1446fb90f9

Analysis

max time kernel
145s
max time network
149s
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, 17:42

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General

Target
a4e2ecad319b07e94cc94fbf0babe25662d03588749f04c8c051dc1446fb90f9.xls
Size 91KB
Sample221109-wae2escebr
SHA256 a4e2ecad319b07e94cc94fbf0babe25662d03588749f04c8c051dc1446fb90f9
MD5 829107384c1c670854ec85b8cd4e7b4e
SHA1 293bff140590d52cd1da3d3c12a62bd46f948a74
SHA512 21b709cf776a5d7b1a520307c519b863c3b84fce8beb5410df85c148f9c348bc536451c5e2579017f70fd3ad68005a5b053d386e705821b9a86fe760211fc4ad
SSDEEP 1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZsEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgl
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	4860	3424	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4540	3424	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	300	3424	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1736	3424	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3424	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3424	EXCEL.EXE
3424	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3424	EXCEL.EXE
3424	EXCEL.EXE
3424	EXCEL.EXE
3424	EXCEL.EXE
3424	EXCEL.EXE
3424	EXCEL.EXE
3424	EXCEL.EXE
3424	EXCEL.EXE
3424	EXCEL.EXE
3424	EXCEL.EXE
3424	EXCEL.EXE
3424	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3424 wrote to memory of 4860	3424	EXCEL.EXE	68
PID 3424 wrote to memory of 4860	3424	EXCEL.EXE	68
PID 3424 wrote to memory of 4540	3424	EXCEL.EXE	69
PID 3424 wrote to memory of 4540	3424	EXCEL.EXE	69
PID 3424 wrote to memory of 300	3424	EXCEL.EXE	70
PID 3424 wrote to memory of 300	3424	EXCEL.EXE	70
PID 3424 wrote to memory of 1736	3424	EXCEL.EXE	71
PID 3424 wrote to memory of 1736	3424	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\a4e2ecad319b07e94cc94fbf0babe25662d03588749f04c8c051dc1446fb90f9.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:3424
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4860
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4540
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:300
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:1736

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/3424-120-0x00007FFD18360000-0x00007FFD18370000-memory.dmp

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memory/3424-121-0x00007FFD18360000-0x00007FFD18370000-memory.dmp

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memory/3424-122-0x00007FFD18360000-0x00007FFD18370000-memory.dmp

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memory/3424-123-0x00007FFD18360000-0x00007FFD18370000-memory.dmp

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memory/3424-132-0x00007FFD149C0000-0x00007FFD149D0000-memory.dmp

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memory/3424-133-0x00007FFD149C0000-0x00007FFD149D0000-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