2577a77a7dc6983a28b5fe87ece6feeb4293a6e592f54e5ed23e5e5ce4a27959

General

Target

2577a77a7dc6983a28b5fe87ece6feeb4293a6e592f54e5ed23e5e5ce4a27959.xlsm
Size

21KB
MD5

69ff86a9eaa34355cd0e104b6943cfbb
SHA1

095bf2b10d9cc616207262c572f7d794660bacb8
SHA256

2577a77a7dc6983a28b5fe87ece6feeb4293a6e592f54e5ed23e5e5ce4a27959
SHA512

e0fec02bb95fcc25ee90a485d59d6c463c3ab611a7a9daecb1241bda157844729c789973cf93ea9665770d38077dec6bece68ba1da7b33a7f0c4c1c331e63863
SSDEEP

384:PhuAi/NjZS8EibbwBlwegASYrLb5CzgObff9kC+xbX77NWu:PtsNxzXQFCBn9kC+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.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4724	2524	regsvr32.exe	81

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

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

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
2524	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2524	EXCEL.EXE
2524	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2524	EXCEL.EXE
2524	EXCEL.EXE
2524	EXCEL.EXE
2524	EXCEL.EXE
2524	EXCEL.EXE
2524	EXCEL.EXE
2524	EXCEL.EXE
2524	EXCEL.EXE
2524	EXCEL.EXE
2524	EXCEL.EXE
2524	EXCEL.EXE
2524	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 4724	2524	EXCEL.EXE	89
PID 2524 wrote to memory of 4724	2524	EXCEL.EXE	89
PID 2524 wrote to memory of 4724	2524	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\2577a77a7dc6983a28b5fe87ece6feeb4293a6e592f54e5ed23e5e5ce4a27959.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:2524
- 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:4724

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
683B

MD5
87434ad1219671e17e78d79903d3c6fd

SHA1
3d3273f9ca3dfd1af6074a488bf3aaafc3d0591b

SHA256
39f3abd1868014a379f3523029acec30b26b7fb8613ce71af812c77f8fb127a3

SHA512
5baf5f504bcdaf5e98d1362a15a6748ef002e2e9a2b4304858744ae0e0c9358a08aec574dc0ab13c2c41cb1651092dd3387bd8950fda4ddc2dbc7a885a92afc5

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

Filesize
114B

MD5
e89f75f918dbdcee28604d4e09dd71d7

SHA1
f9d9055e9878723a12063b47d4a1a5f58c3eb1e9

SHA256
6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023

SHA512
8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0

Download Submit
memory/2524-17-0x00007FFBD6710000-0x00007FFBD6720000-memory.dmp

Filesize
64KB

Download
memory/2524-13-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-8-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-7-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-6-0x00007FFBD9070000-0x00007FFBD9080000-memory.dmp

Filesize
64KB

Download
memory/2524-5-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-12-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-15-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-16-0x00007FFBD6710000-0x00007FFBD6720000-memory.dmp

Filesize
64KB

Download
memory/2524-14-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-9-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-3-0x00007FFC1908D000-0x00007FFC1908E000-memory.dmp

Filesize
4KB

Download
memory/2524-19-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-10-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-2-0x00007FFBD9070000-0x00007FFBD9080000-memory.dmp

Filesize
64KB

Download
memory/2524-18-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-11-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-0-0x00007FFBD9070000-0x00007FFBD9080000-memory.dmp

Filesize
64KB

Download
memory/2524-21-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-20-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-23-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-1-0x00007FFBD9070000-0x00007FFBD9080000-memory.dmp

Filesize
64KB

Download
memory/2524-46-0x00007FFC18FF0000-0x00007FFC191E5000-memory.dmp

Filesize
2.0MB

Download
memory/2524-4-0x00007FFBD9070000-0x00007FFBD9080000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads