e8085fda85865155aa942efb04e789962791ca7d0338216674a8e28c1e1a60ae

Analysis

max time kernel
129s
max time network
131s
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, 11:45

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General

Target

e8085fda85865155aa942efb04e789962791ca7d0338216674a8e28c1e1a60ae.xls
Size

217KB
MD5

bc33b79e5ae05e7611a77449a9538610
SHA1

9cac3606f7e4d5a693d53e4b0ba239a26d27a536
SHA256

e8085fda85865155aa942efb04e789962791ca7d0338216674a8e28c1e1a60ae
SHA512

f5ab02ba498e0a2ef0b0c3753ea7eea15a894efb63a3bee81eeb4ef0b489c5a260fe3d2a5cceb19be630ec629769e744c5a83ad8d03db4d91700c864b4d1d9c5
SSDEEP

6144:OKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgIyY+TAQXTHGUMEyP5p6f5jQmG:bbGUMVWlbG

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://cursosinterativos.com.br/semprichickoff2/pEl/

xlm40.dropper

http://mulmatdol.com/adm/Fa/

xlm40.dropper

http://www.tugarden.com/docs/csv_import/rf6bMPAtbBPiDK/

xlm40.dropper

http://www.darularqompatean.com/asq/IcVMFfwR65Yf8fMd5G/

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	4284	1020	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3116	1020	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4496	1020	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2332	1020	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
1020	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1020 wrote to memory of 4284	1020	EXCEL.EXE	68
PID 1020 wrote to memory of 4284	1020	EXCEL.EXE	68
PID 1020 wrote to memory of 3116	1020	EXCEL.EXE	69
PID 1020 wrote to memory of 3116	1020	EXCEL.EXE	69
PID 1020 wrote to memory of 4496	1020	EXCEL.EXE	70
PID 1020 wrote to memory of 4496	1020	EXCEL.EXE	70
PID 1020 wrote to memory of 2332	1020	EXCEL.EXE	71
PID 1020 wrote to memory of 2332	1020	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\e8085fda85865155aa942efb04e789962791ca7d0338216674a8e28c1e1a60ae.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1020
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4284
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3116
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4496
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:2332

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/1020-294-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download
memory/1020-117-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download
memory/1020-118-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download
memory/1020-119-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download
memory/1020-128-0x00007FFE449C0000-0x00007FFE449D0000-memory.dmp

Filesize
64KB

Download
memory/1020-129-0x00007FFE449C0000-0x00007FFE449D0000-memory.dmp

Filesize
64KB

Download
memory/1020-297-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download
memory/1020-296-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download
memory/1020-295-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download
memory/1020-116-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads