724d1bdcf9e517c2055105448044b7c8427dd4b6bd9d3f626c1b8c284c797b86

General

Target

724d1bdcf9e517c2055105448044b7c8427dd4b6bd9d3f626c1b8c284c797b86.xls
Size

91KB
MD5

0a20ad996d7c9d8f811a0a3f74b74c77
SHA1

4402fbe9a6ef86ac86a90767a7a61acc6e09012f
SHA256

724d1bdcf9e517c2055105448044b7c8427dd4b6bd9d3f626c1b8c284c797b86
SHA512

f82da7d607e5fc58f49a53006a9e8dd21cab074a3771fe3ac839478ab9cb207e20435c0d77ec8a3ad850a5cae8ec59283a6f70491426eaf11d6372d7a7c60f1b
SSDEEP

1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZcEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg1

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	348	780	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	32	780	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	868	780	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5052	780	regsvr32.exe	81

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\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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
780	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
780	EXCEL.EXE
780	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 780 wrote to memory of 348	780	EXCEL.EXE	84
PID 780 wrote to memory of 348	780	EXCEL.EXE	84
PID 780 wrote to memory of 32	780	EXCEL.EXE	85
PID 780 wrote to memory of 32	780	EXCEL.EXE	85
PID 780 wrote to memory of 868	780	EXCEL.EXE	88
PID 780 wrote to memory of 868	780	EXCEL.EXE	88
PID 780 wrote to memory of 5052	780	EXCEL.EXE	89
PID 780 wrote to memory of 5052	780	EXCEL.EXE	89

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\724d1bdcf9e517c2055105448044b7c8427dd4b6bd9d3f626c1b8c284c797b86.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:780
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:348
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:32
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:868
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:5052

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

Filesize
1KB

MD5
b1a8e67756797ec7f96113751306f70c

SHA1
ec8b7dfc3da5ec991d7f488dfc634d8e7d7badf7

SHA256
57ce8e436a5ef1a79ddaf8afd9c27c403bda1e0335b2a5b2b92ad507d47cbd04

SHA512
f84b5238de60549aabe5571d41b69f0954e656320b003539ad4851a7d0775b4c66ab507129a2e52e80c15a1530f6424168e7f07d8ed0fea87de79b1a0e04371e

Download Submit
memory/780-16-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-6-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-7-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-18-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-8-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-11-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-12-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-13-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-14-0x00007FF946150000-0x00007FF946160000-memory.dmp

Filesize
64KB

Download
memory/780-10-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-15-0x00007FF946150000-0x00007FF946160000-memory.dmp

Filesize
64KB

Download
memory/780-1-0x00007FF98830D000-0x00007FF98830E000-memory.dmp

Filesize
4KB

Download
memory/780-3-0x00007FF9482F0000-0x00007FF948300000-memory.dmp

Filesize
64KB

Download
memory/780-4-0x00007FF9482F0000-0x00007FF948300000-memory.dmp

Filesize
64KB

Download
memory/780-5-0x00007FF9482F0000-0x00007FF948300000-memory.dmp

Filesize
64KB

Download
memory/780-20-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-19-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-17-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-2-0x00007FF9482F0000-0x00007FF948300000-memory.dmp

Filesize
64KB

Download
memory/780-21-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-0-0x00007FF9482F0000-0x00007FF948300000-memory.dmp

Filesize
64KB

Download
memory/780-37-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-38-0x00007FF98830D000-0x00007FF98830E000-memory.dmp

Filesize
4KB

Download
memory/780-39-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-43-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download
memory/780-9-0x00007FF988270000-0x00007FF988465000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads