0662b95eafc74dd6257bda280ba83fba8f4150445f544c4b33189a210d570d9f

General

Target

0662b95eafc74dd6257bda280ba83fba8f4150445f544c4b33189a210d570d9f.xlsm
Size

21KB
MD5

23158545ef4c34b6f2064fe4e0ed56ce
SHA1

d4d81598fc1f527afcb73c8b937072bd030df6e5
SHA256

0662b95eafc74dd6257bda280ba83fba8f4150445f544c4b33189a210d570d9f
SHA512

39775ecb510a64b2d74b77197990abb66c8a1665e745ddeb16bd43b964f07c9d74cd0a586c1fff760a1eb3652862fb09b7430c6a786fa3ba43386ac298e596df
SSDEEP

384:vhuAi/NjZS8EibbwBlwegASYrLb5CzgObff9kC+xbX77NWu:vtsNxzXQFCBn9kC+xbL71

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://beetle-j.jp/wp-admin/ErM4mW05tdj/

xlm40.dropper

https://brutobrasil.com.br/pdf/toO18cIP3/

xlm40.dropper

http://e3technology.in/2checkout_integration_php/rDcr1Wl90WWA9M/

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

regsvr32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4360	540	regsvr32.exe	EXCEL.EXE

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
discovery

System Language Discovery
T1614.001

Processes:

regsvr32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid process

540 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

540 EXCEL.EXE
540 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 540 wrote to memory of 4360	540	EXCEL.EXE	regsvr32.exe
PID 540 wrote to memory of 4360	540	EXCEL.EXE	regsvr32.exe
PID 540 wrote to memory of 4360	540	EXCEL.EXE	regsvr32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\0662b95eafc74dd6257bda280ba83fba8f4150445f544c4b33189a210d570d9f.xlsm"
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:540
- C:\Windows\SysWow64\regsvr32.exe
  C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:4360

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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
2KB

MD5
1bee00847418bae4354e4e45ab2535f0

SHA1
1a15a7448b96f0ebc659b1a99ab46013d6364791

SHA256
3aa60bc4f40e900dd3c4d7adbf5a29a40ab62fbe9422901cb5e7a8b7e4414f0c

SHA512
7bb16933ecff04d38542873dad4cd6c51fb5ebc7d270dfa65d5d6b5c7112d7c98c77ba61648ff87c2a22c8a11e5b7261cd7ef2cff1341328a02d21d518895def

Download Submit
C:\Users\Admin\rfs.dll

Filesize
114B

MD5
e89f75f918dbdcee28604d4e09dd71d7

SHA1
f9d9055e9878723a12063b47d4a1a5f58c3eb1e9

SHA256
6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023

SHA512
8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0

Download Submit
memory/540-16-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-0-0x00007FFAB8190000-0x00007FFAB81A0000-memory.dmp

Filesize
64KB

Download
memory/540-1-0x00007FFAF81AD000-0x00007FFAF81AE000-memory.dmp

Filesize
4KB

Download
memory/540-5-0x00007FFAB8190000-0x00007FFAB81A0000-memory.dmp

Filesize
64KB

Download
memory/540-7-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-9-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-10-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-11-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-13-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-15-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-2-0x00007FFAB8190000-0x00007FFAB81A0000-memory.dmp

Filesize
64KB

Download
memory/540-4-0x00007FFAB8190000-0x00007FFAB81A0000-memory.dmp

Filesize
64KB

Download
memory/540-12-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-14-0x00007FFAB6020000-0x00007FFAB6030000-memory.dmp

Filesize
64KB

Download
memory/540-8-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-6-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-18-0x00007FFAB6020000-0x00007FFAB6030000-memory.dmp

Filesize
64KB

Download
memory/540-36-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-37-0x00007FFAF81AD000-0x00007FFAF81AE000-memory.dmp

Filesize
4KB

Download
memory/540-38-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-3-0x00007FFAB8190000-0x00007FFAB81A0000-memory.dmp

Filesize
64KB

Download
memory/540-44-0x00007FFAF8110000-0x00007FFAF8305000-memory.dmp

Filesize
2.0MB

Download
memory/540-17-0x00007FFAF8110000-0x00007FFAF8305000-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